Dissertations / Theses on the topic '100Gb'
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Antona, Jean-Christophe. "Nouveaux outils pour l'estimation de la qualité de transmission et l'optimisation de réseaux optiques modulés à 10, 40 et 100Gb/s." Phd thesis, Télécom ParisTech, 2011. http://pastel.archives-ouvertes.fr/pastel-00678415.
Full textCharlet, Gabriel. "Etude des formats de modulation et des méthodes de détection pour les transmissions multiplexées en longueurs d'ondes sur fibre optique au débit de 40Gb/s et 100Gb/s." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00769923.
Full textCharlet, Gabriel. "Etude des formats de modulation et des méthodes de détection pour les transmissions multiplexées en longueurs d’ondes sur fibre optique au débit de 40Gb/s et 100Gb/s." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112008/document.
Full textModulation and detection methods have been studied to improve the performance of optical long distance communication systems. Polarization division multiplexed modulation and multilevel phase modulation format have been evaluated. Coherent detection associated with digital signal processing has been selected at the receiver side to optimize system performance. This receiver design allows especially to compensate linear distortions induced by fiber optics propagation very efficiently. After long distance propagation, optical signal to noise ratio is a major limitation. The other main limitation comes from non linear interactions of light and fiber optics which put a limit on the maximum power to be injected within fiber optics.The first wavelength division multiplexed transmission over long distances (>1000km) using coherent detection has been demonstrated.Various strategies have been proposed to minimize the impact of non linear effect. The impact of polarisation multiplexing has been quantified in configuration where chromatic dispersion is either regularly optically compensated within the line or digitally compensated at the receiver end.The proposition to use a polarization multiplexed format using only 2 phase levels as well as the algorithms capable to detect them has been done. The performance gain obtained compared to the convention solution using 4 phase levels has been demonstrated.At 100Gb/s bit rate, the demonstration of the first transmission over trans-oceanic distance has also been done.These research work have been used to define and then develop Alcatel-Lucent products which are now commercialized, at 40Gb/s by using a polarization multiplexed and 2 phase levels modulation format, and at 100Gb/s by using a polarization multiplexed 4 phase levels format
Grenar, David. "Řešení nasazení DWDM systémů na 100G a 400G." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242064.
Full textSchwarz, Mathias. "Protein S-100B, diagnostischer und prognostischer Faktor nach Schädelhirntrauma." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-55852.
Full textBoyes, Barry Edward. "An immunochemical and immunocytochemical study of the S-100b protein." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24485.
Full textMedicine, Faculty of
Graduate
Nuyts, Roeland Johannes M. W. "Modélisation des systèmes de communications optiques à haut débit (10Gb/s) /." Paris : Ecole nationale supérieure des télécommunications, 1998. http://catalogue.bnf.fr/ark:/12148/cb36984332t.
Full textEngdahl, Kristoffer. "100g glättat : En ideologikritisk analys av neoliberalismens inverkan på fristående gymnasieskolors marknadsföring." Thesis, University of Kalmar, School of Human Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hik:diva-1762.
Full textSwedish school system is today victim of facing competition. Today sees the school leadership the students like customers whom they depend to operate their school. But I have asked myself, what will be the new students see and how much this spectacle in both money and time that project will cost for the municipality and school teachers. The question is if whether the school will be better when the competition becomes school or just better marketed? I'm interested in how clearly ideologies emerge in schools brochures if we study them at critically and analytically way. I will study how the independent schools present themselves and what ideas they describe. Can we see the ideological arguments that Reagan and Thatcher had in the 80s who proved their controlled Swedish politicians argued in the 90s in the published material from the Swedish Independent schools today? Independent schools can be seen as vanguards in the Swedish school policy. The Neoliberal winds blowing can probably be best reflected by the private sector in pursuit of the student base. At the same time, the independent schools on the side of the ideologies that best describe the Neoliberal doctrine.
I'm interested in how and how societal change is implemented and how clear ideologies reflected in school materials in their struggle to become winners in the Swedish context of market adjustment. I will be studying the brochures from an ideology critical approach that highlights the ideological formulations that can be traced back to the basic ideology.
Boeck, Eric L. "Study of the implementation of three-dimensional geometric modeling on the Rainbow 100B microcomputer." Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/423762.
Full textGrafe, Adina. "Die Auskunftserteilung über Verkehrsdaten nach [Para][Para] 100g, 100h StPO - staatliche Kontrolle unter Mitwirkung Privater." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:25-opus-60853.
Full textLau, Kelvin C. "Serum S-100B as a potential biomarker for meningitis in febrile infants an interim analysis /." [New Haven, Conn. : s.n.], 2008. http://ymtdl.med.yale.edu/theses/available/etd-12082008-104745/.
Full textGalindo, Reyes Yeivi Susan. "Validación del método analítico microbiológico: valoración de bacitracina 50 000ui/100g en un producto terminado." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2012. https://hdl.handle.net/20.500.12672/11573.
Full textTesis
Huber, Jürgen. "Untersuchung eines potenziellen Serum-Markers S-100B zur Identifikation potenziell lebensbedrohter Patienten nach leichtem Schädel-Hirn-Trauma /." München, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000254434.
Full textVido, Matej. "Akcelerace OVS s využitím akcelerační karty s FPGA." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385968.
Full textSchumacher, Ute [Verfasser]. "S-100B und NSE-Marker des initialen Schadens von Subarachnoidalblutungen und deren Beziehung zu Vasospasmus und Outcome / Ute Schumacher." Gießen : Universitätsbibliothek, 2011. http://d-nb.info/1062972627/34.
Full textFranzke, Anne Verfasser], Mathias [Akademischer Betreuer] [Bähr, Alf [Akademischer Betreuer] Giese, and Patricia [Akademischer Betreuer] Virsik-köpp. "S-100B als Verlaufsparameter beim ischämischen Schlaganfall / Anne Franzke. Gutachter: Mathias Bähr ; Alf Giese ; Patricia Virsik-Köpp. Betreuer: Mathias Bähr." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042735360/34.
Full textIssa, Vivian. "L'effet de la dispersion chromatique sur le taux d'erreur de transmission par fibre optique pour un débit de 10Gb/s." [S.l. : s.n.], 2007.
Find full textIssa, Vivian. "L'effet de la dispersion chromatique sur le taux d'erreur de transmission par fibre optique pour un débit de 10Gb/s." Mémoire, Université de Sherbrooke, 2007. http://savoirs.usherbrooke.ca/handle/11143/1385.
Full textMetzger, Andrew T. "Measurement of the abutment forces of a skewed semi-integral bridge as a result of ambient temperature change." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179255923.
Full textHsueh, Yu-Ting. "Frontiers of optical networking technologies: millimeter-wave radio-over-fiber and 100g transport system for next-generation high-data-rate applications." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43681.
Full textJaworski, Matthias [Verfasser], Henry [Akademischer Betreuer] Schulz, Henry [Gutachter] Schulz, and Lars [Gutachter] Brechtel. "Auswirkungen von Ausdauerbelastungen auf die biochemischen Marker Neuronenspezifische Enolase und S-100B / Matthias Jaworski ; Gutachter: Henry Schulz, Lars Brechtel ; Betreuer: Henry Schulz." Chemnitz : Technische Universität Chemnitz, 2021. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa2-760255.
Full textGoerdt, Christoph [Verfasser], Holger [Akademischer Betreuer] Schmidt, Helmut [Akademischer Betreuer] Eiffert, and Patricia [Akademischer Betreuer] Virsik-köpp. "Tau- und S-100b-Protein in der Differenzialdiagnose der bakteriellen Meningitis / Christoph Goerdt. Gutachter: Holger Schmidt ; Helmut Eiffert ; Patricia Virsik-Köpp. Betreuer: Holger Schmidt." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042530890/34.
Full textMercier, Éric. "La valeur pronostique de la protéine S-100B et de l'énolase neurone-spécifique suivant un traumatisme craniocérébral modéré ou grave : revues systématiques et méta-analyses." Master's thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26963.
Full textThe main objective of this study is to determine the prognostic value of S-100ß protein and neuron-specific enolase (NSE) following a moderate or severe traumatic brain injury (TBI). Two systematic reviews and meta-analysis were performed to find the studies having evaluated the link between a level of those biomarkers and the mortality or the Glasgow outcome scale (GOS). Of the 9228 citations, 41 and 26 studies were finally included respectively for S-100ß protein and NSE. We observed a significant association between blood levels of S-100ß protein and NSE and an unfavorable outcome such as the mortality or the GOS ≤ 3. A 100% specificity serum level threshold for mortality was between 1.38 to 10.50 µg/L for the S-100ß protein. The association showed consistent results despite the presence of significant extracranial injuries.
Stålnacke, Britt-Marie. "Detection and outcome of mild traumatic brain injury in patients and sportsmen : persisting symptoms, disabilities and life satisfaction in relation to S-100B, NSE and cortisol." Doctoral thesis, Umeå universitet, Institutionen för samhällsmedicin och rehabilitering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-259.
Full textStålnacke, Britt-Marie. "Detection and outcome of mild traumatic brain injury in patients and sportsmen : persisting symptoms, disabilities and life satisfaction in relation to S-100B, NSE and cortisol /." Umeå : Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-259.
Full textSchumann-Binarsch, Silke [Verfasser], Wilhelm [Akademischer Betreuer] Nolte, and Michael [Akademischer Betreuer] Oellerich. "Die Serumkonzenztrationen von S-100B bei Leberzirrhose und transjugulärem intrahepatischen portosytemischen Stent-Shunt in Abhängigkeit von der minimalen hepatischen Enzephalopathie der Leber- und der Nierenfunktion / Silke Schumann-Binarsch. Gutachter: Wilhelm Nolte ; Michael Oellerich. Betreuer: Wilhelm Nolte." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://d-nb.info/1067626301/34.
Full textLanger, Laura Maria [Verfasser], Thomas [Gutachter] Höhn, and Monika [Gutachter] Hampl. "Quantifizierung von S-100b, NSE und MBP im Urin Frühgeborener <1500 g Geburtsgewicht und Korrelation mit dem Status des PDA zur Abschätzung einer perfusionsgeminderten Schädigung zerebraler Zellen / Laura Maria Langer ; Gutachter: Thomas Höhn, Monika Hampl." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/1166950557/34.
Full textHadjicharalambous, Myrianthi. "Development of patient-specific diastolic models for the study of dilated cardiomyopathy." Thesis, King's College London (University of London), 2016. http://kclpure.kcl.ac.uk/portal/en/theses/development-of-patientspecific-diastolic-models-for-the-study-of-dilated-cardiomyopathy(3207db4a-100b-45ab-886e-56d2bf1d009b).html.
Full textMacedo, Carla. "Transmissão e Receção a 40Gb/s e 100Gb/s." Dissertação, 2012. http://hdl.handle.net/10216/74042.
Full textMacedo, Carla Filipa Martins de. "Transmissão e Receção a 40Gb/s e 100Gb/s." Dissertação, 2012. https://repositorio-aberto.up.pt/handle/10216/65048.
Full textMacedo, Carla Filipa Martins de. "Transmissão e Receção a 40Gb/s e 100Gb/s." Master's thesis, 2012. https://repositorio-aberto.up.pt/handle/10216/65048.
Full textTsai, Yu-Shen, and 蔡于紳. "A Cost-Effective 100Gb/s System For Next Generation Passive Optical Network." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/79281557592111844289.
Full text國立交通大學
光電工程研究所
101
In order to meet the demand of broadband multimedia services in the near future, FSAN (Full Service Area Network) selected TWDM as a primary solution to next-generation passive optical network (NGPON), named NGPON2, which can provide 40Gbps capacity to support 1-Gbps data rate for each optical network unit (ONU). After NG-PON2, 100Gbps capacity is most likely seen as the next generation standard. And Optical OFDM PON with intensity modulation and direction (IMDD), which offer high spectral efficiency and flexible bandwidth allocation, is very suitable for 100-Gbps system. A cost-effective 10-GHz IMDD OFDM system has already achieved 40-Gbps capacity over 100km SSMF transmission. However, it needs to further improve the data rate to 100-Gbps. This thesis presents a cost-effective system combining multicarrier with IMDD OFDM system, and theoretically compares the multicarrier conversion efficiency of PM and MZM. We demonstrate a multicarrier IMDD OFDM system using phase modulator and successfully reach 100-Gbps over 20-km SSMF transmission.
SU, ZHE-XIAN, and 蘇哲賢. "100Gb/s Coarse Wavelength Division Multiplexing Singlemode Fiber Optical Transmitter and Receiver." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/zmqck9.
Full text國立高雄應用科技大學
電子工程系
105
In this thesis, 100Gb/s coarse wavelength division multiplexing (CWDM) optical transmitter and receiver were developed for single-mode fiber (SMF) transmissions. For this transmitter, the distributed feedback (DFB) laser diodes (LDs) at 1270nm, 1290nm, 1310nm, and 1330nm were used in the TO-56 coaxial packaged transmitter optical subassembly (TOSA) modules. The TOSA modules can be controlled through four LD driver integrated circuits (ICs) with clock and data recovery (CDR), and the four optical signals were combined into a SMF through an optical multiplexer. For this receiver, the p-i-n photodiodes and transimpedance amplifiers were used in the TO-46 coaxial packaged receiver optical subassembly (ROSA) modules. The four-wavelength optical signal from the SMF was separated as four optical signals through an optical demultiplexer, and the ROSA modules can be controlled through four receiver ICs with CDR. The 100-Gb/s CWDM optical transmitter and receiver had been realized and tested at four-channel 25.78Gb/s operation. In the transmitter, the extinction ratio, rise time, fall time, peak-to-peak jitter, and mask margin of the eye diagram for the best performance channel are 4.4dB, 14.47ps, 23.5ps, 15.7ps and 14.7%, respectively. In the receiver, the rise time, fall time, and peak-to-peak jitter of the eye diagram for the best performance channel after 10km SMF transmission are 16.9ps, 16.3ps, and 11ps, respectively. At 1270nm, 1290nm, 1310nm, and 1330nm, the dispersion power penalties after 10km SMF transmission are about 1.3dB, -0.5dB, 0dB, -0.5dB, respectively. Our CWDM optical transmitter and receiver had been verified and can be applied in 100Gb/s 10km SMF transmissions.
Cheng, Chia-Kai, and 鄭家凱. "A 1/2.5-Rate Clock and Data Recovery Circuit for 100Gb/s Ethernet in 40 nm Technology." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/42045406149607511904.
Full text國立臺灣大學
電子工程學研究所
104
In June, 2010, IEEE P802.3ba is generated officially. It defines the specification of 40GbE and 100GbE. The purpose is to extend the operation speed of the IEEE 802.3 agreement to 40Gbps and 100Gbps, and at the same time it also accords the current agreement and the demand of the transmission distance. At the definition of IEEE P802.3ba, the 100GbE is used four channels of 25Gbps output of with wavelength division multiplexing to achieve the purpose of high speed transmission. At optical communication systems, since the cost of the transmission line channel is very expensive, in order to reduce the cost, we usually hope we can transmit higher frequency data in single channel. At the 100GbE receiver system, we need to deserialize four channel 25Gbps signal into ten channel 10Gbps. Unlike the conventional power of 2 deserializer, the 2:5 data ratio would suffer from more complicate design, and consume more area and have more power dissipation. A 1/2.5-rate clock and data recovery (CDR) circuit is proposed in this thesis. We can deserialize the signal without 2:5 deserializer to reduce the hardware resource. This CDR is implemented in TSMC 40nm CMOS technology. At 1V power supply, it only consumes 51.5mW/Channel.
Chen, Jiun-ming, and 陳俊銘. "One Channel 10Gb/s Optical transceiver." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/62323557069032156142.
Full text國立中山大學
光電工程研究所
93
We fabricate and measure 10Gb/s optical transceiver module for used in optical communication network. The 10Gb/s optical transceiver module consists of a laser, a laser driver IC, a PIN-TIA, a limiting amplifier and a high-frequency print circuit board (PCB) layout design. In the design of modules, the distortion, reflection, the effect of lumped elements and SMA connector are considered. The layout of printed circuit board must be match to the impedance of transmission line. The electromagnetic interference (ISI) issue is also considered in order to achieve the best design of the module. The optical transceiver module is tested at signal pattern of 231-1 and data rate of 10Gb/s. The peak-peak jitter is measured 27ps in transmitter. In receiver, the peak-peak jitter is measured 24ps at back to back. For 10km fiber, the peak-peak jitter is measured 29ps. In the condition of bit error rate (BER) of 10-12, the sensitivity of receiver can reach to -13.5dBm. The result of eye diagram measurement can meet the mask of STM-64/OC-192 standard.
Pereira, Ricardo Jorge Moreira. "Digital Sigma-Delta modulator with high SNR (100dB+)." Dissertação, 2011. http://hdl.handle.net/10216/61735.
Full textPereira, Ricardo Jorge Moreira. "Digital Sigma-Delta modulator with high SNR (100dB+)." Master's thesis, 2011. http://hdl.handle.net/10216/61735.
Full textFranzke, Anne. "S-100B als Verlaufsparameter beim ischämischen Schlaganfall." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-0006-B2DA-E.
Full textTsai, Tzung-Shing, and 蔡宗興. "SiGe SONET OC-192 10Gb/s AGC System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/10260942588754424390.
Full text國立臺灣大學
電子工程學研究所
91
In recently communication environment, SONET OC-192 has been playing an important role of media interface in optical communication for wide area networks (WAN). This thesis introduces feedback control type automatic gain control amplifier (AGC) for SONET OC-192 10Gb/s system. This system covers wide dynamic range 32dB of input signals and operates at very high speed. Therefore, it satisfies the requirement of the increasing transmission data volumes. Different architectures of AGC system may trade-off among cost, stability and responding time. In this thesis, feedback control type AGC takes advantages on cost and stability issue. Due to currently reference paper, AGC system operated at 10Gb/s is merely designed by CMOS technology. For cost and technology property concerned, therefore, it is designed by SiGe technology. In the aspects of circuit design, an improved traditional Gilbert cell as variable gain amplifier (VGA) is proposed and it provides 33.3dB dynamic control range. Gain & Buffer stage (G/B) using wideband amplifier provides 22.3dB gain amplifying the signal to the output swing 800mVp-p. The peak detector is designed as simply full-wave rectifier with low pass filter at its output. Thereafter is Integrator which is implemented by low pass filter figure to fit its characteristic. The circuit, i.e., VGA, G/B, Peak Detector and Integrator consist of AGC system. Finally, the circuit of the AGC system is verified from pre-simulation. The gain control range is arrived to 33.3dB(39.7~6.4dB). This chip is fabricated by TSMC 0.35um SiGe BiCMOS Technology. It occupies 0.93*0.92mm2 yield area and consumes 97mW under 3.3V power supply.
Graeser, Monika. "Prognostischer Wert des Tumormarker S-100B beim malignen Melanom /." 2004. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013196562&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textKao, Chih-Ting, and 高誌廷. "Design and Analysis of 10Gb/s CWDM OSA module." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/96975305121870681620.
Full textTseng, Tai-Fu, and 曾泰富. "10Gb/s FP Laser with Extra Optical Confinement Layers." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/85693689171156341466.
Full text國立高雄應用科技大學
光電與通訊研究所
94
In this study, we inserted two highly refractive index layers in the active layer of FP-LD to confine the optical wave tightly. A tightly optical confined structure will increase the resonant frequency and improve the modulation performances. This novel structure could improve the modulation capability of conventional 2.5Gb/s FP laser up to 10Gb/s. AlGaInAs material was adopted in strained multiple quantum wells (S-MQW) which can improve both the modulation bandwidth and the high temperature performances further. Our FP laser shows a good light emission characteristic and large far-filed emission angles as an evidence of highly confined structure. On account of the above, under a reasonable bias and modulation condition, the maximum modulation frequency f3dB of the intrinsic chip achieves 13.4GHz and the waveform open clearly and meet the requirement of 10Gb/s Ethernet standard. After a carefully RF matching design and skillfully assembling process, the diode was packaged into the coaxial module. RF reflection measurement shows this module has no strong reflection in RF signal when operated from DC to 15GHz. The maximum modulation frequency f3dB achieves 10GHz which ensures the feasibility of this module in the EDC approach for 10Gb/s application.
Hsiao, Jui-Cheng, and 蕭瑞成. "A 10Gb/s Equalizer with a Digital Adaptive Algorithm." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/79295111398802343972.
Full text國立臺灣大學
電子工程學研究所
102
An equalizer using a digital adaptive algorithm is proposed to replace RC filters, rectifiers, V/I converters and large loop capacitors. The proposed algorithm uses two analog reference levels to represent the high-frequency and low-frequency components of the input data, respectively. By monitoring the two reference levels, the proposed equalizer can tune its high-frequency gain to compensate the channel loss appropriately. The measured peak-to-peak jitter for the 90-cm channel is reduced from 81.63 ps to 33.84 ps with 8-Gb/s input data; while the 37-cm channel is decreased from 47.64 ps to 37.60 ps with 10-Gb/s input data. The proposed adaptive equalizer successfully operates for different channel lengths (up to 90-cm) on FR-4 PCB. This work has been fabricated in a 40-nm process, and the equalizer core circuit occupies 0.014 mm2 and consumes 10 mW from a 1-V supply (excluding output buffer circuits). The proposed equalizer uses only digital logic gates for adaptation instead of RC filters, rectifiers, V/I converters and large capacitors for loop stabilization. Such digital-intensive implementation can highly reduce the hardware cost in advanced CMOS technologies.
Chen, Pei-Lin, and 陳培霖. "Demonstration of 16-wavelength 10Gb/s Optical Wireless Transmission." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/44110526010380141897.
Full text國立臺灣大學
電信工程學研究所
96
In the point-to-point application of urban networks, the advantage of optical wireless (OW) communication system is the high transmission capacity and the low equipment expense, which provides an ideal solution for the last mile problem. Because the propagation of light is directional, the high communication quality can be achieved if there are no obstacles between the transmitter and the receiver (line of sight). Therefore the main factor for transmitting light in the atmospheric is: absorption, scattering and turbulence caused by the suspended particles and molecules. Power attenuation per kilometer reaches as high as above 100dB especially when the thick fog occurs. The scattering effects can be assorted as three categories: Rayleigh scattering, Mie scattering and geometry scattering. Various effects can be applied in different range of wavelength. For example, at the wavelength of , if the radius of particles is similar to the wavelength, Mie theory is suitable for analyzing the scattering effect. Mie theory which provides mathematical analysis about the scattering angle and the intensity, it can be used to estimate attenuation caused by atmosphere and scattering intensity in different conditions. The thesis consists of two major parts. One is to analyze attenuation by Mie theory; the other part introduces a 16-channel OW system with channel rate of 10Gb/s and measures the bit error probability. When transmission distance is within a few hundred meters, the attenuation is small. Therefore the performance of the system is quite superior. Increasing transmitting distance above one kilometer, the attenuation is significant. In actual experiment, we demonstrate an OW transmission with 2.16 kilometers. The thesis discusses the influence caused by scattering from the theory and experimental data. We can understand the major challenge in the OW communication is fog in the thesis. But OW can provide high data rate and low hardware cost at the same time, we believe that OW communication is a high potential technology.
Wang, Teng-Yi, and 王騰毅. "A 10Gb/s OC192 Transmitter in 0.35μm SiGe BiCMOS Process." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/46478480454282623665.
Full text國立交通大學
電子工程系所
93
Fiber-optic has played an important role in long hall and high speed network backbone thanks to its superiorities in low loss and wide bandwidth performance. Nowadays, the data rate of synchronous optical network (SONET) OC-192 is about 10 Gbps, and that of its next generation (OC-768) is up to 40 Gbps. They provide sufficient bandwidth for multi-media data communication. So far, how to realize cost effective optical transceiver ICs and reduce the cost of fiber deployments remain the key issues of the popularity of optical communication. The objective goal of this thesis is to develop data serializer and laser diode driver for 10 Gbps optical transmitter. All the circuit blocks are implemented in 0.35μm SiGe BiCMOS technology for low cost and future system chip integration. In the transmitter side of the optical network, parallel source data are encoded and converted to a high speed serial bit stream through a multiplexer. The clock multiplier unit (CMU) provides multiple phase and frequency outputs for parallel to serial data conversion. The output voltage of data serializer is further converted to a modulation current though a laser diode driver, so as to drive a laser diode and accomplish electrical to optical conversion. The data serializer is composed of a 9.9533 GHz clock multiplying unit (CMU) and a 16 to 1 multiplexer, which converts 16 x 622.08 Mb/s parallel data into a 9.9533 Gb/s serial bit stream. To facilitate on-chip testing, a 16 x parallel pseudo random bit stream (PRBS) generator is also built in. The CMU is a phase-locked loop based frequency synthesizer. It generates 9.9533 GHz output frequency from a 622.08 MHz reference signal and serves as a clock source for multiplexer. The multiplexer is comprised of 4 stages 2 to 1 multiplexer and configured in a tree structure. 16 parallel data is converted to a serial 9.9533 Gbps bit stream according to the reference clocks provided by the CMU. The voltage output of data serializer will be resampled by a retimer so as to alleviate jitter accumulation introduced by the cascaded multiplexer. Operating under a 3.3 V supply, the total power dissipation of the data serializer is 594.66 mW. The laser diode driver converts the output voltage of data serializer to an AC current so as to modulate the laser diode. In addition, it provides biased current ranges from 1-60 mA and modulation current of 40-100 mA to accommodate various applications. To enhance its driving capability and accelerate its operating speed, the laser diode driver is composed of two push-pull pre-drivers followed by a large current switch. The output swing and rise-fall time of the pre-driver is adjustable according to its modulation current. Moreover, negative capacitor Miller compensation technique is utilized to enhance the data bandwidth of the laser driver. To stabilize its output currents, both the biased current and modulation current are derived from a bandgap reference. The measured rise/fall time of the driver output is about 47 ps, and jitter is about 22.2 ps p-p(2.86psrms). The measured eye-diagrams meet the eye masks defined by SONET OC-192 and 10 Gbps Ethernet specifications. The total power consumption of the laser driver is about 1.38 W under a 3.3 V/7 V supply.
Huang, Zhi-jia, and 黃致嘉. "Differential Signal Modulation for 10Gb/s Coaxial Laser Module Packaging." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/czk828.
Full text國立中山大學
通訊工程研究所
97
In this study, we present a 10-Gb/s coaxial-type laser modules package with signal input of single-end and differential-end designs, separately. By using the method of coaxial-type package with low-cost and high-performance characteristics, it can be applied to high-speed optical fiber communication, fiber to the home (FTTH), and passive-optical-network (PON) applications. Because the structure of traditional TO-Can header without proper modification, the laser module with single-end signal input design results in poor RF transmission characteristic. The notch filter effect induced by the parasitic inductance of the long lead and wires is becoming the traditional TO-Can’s one of the major factors. A coaxial-type laser module with commercial TO-Can materials and an internal matching resistor of 18 ohms to reduce the signal reflection is used in this work. In single end signal modulation, The proposed coaxial laser module is fitted with an internal matching resistor of 18Ω to reduce the signal reflection. With the transmission signal of 231-1 and 10Gb/s operation, the coaxial-type laser module with single-end input can meet the mask of OC-192 standard and 26% eye mask margin. The laser module with the design of differential-end signal input that has two reverse voltage V+ and V- can reduce effect of the common-mode noise. Because the differential-signal input with shunt connection was adopted, the matching resistor of 39ohm was used for impedance matching. In addition, the laser module with common-mode signal input was also used to compare. The laser module with common-mode signal input was measured with ER (extinction-ratio) of 3.5dB and Jitter of 23ps. Due to the laser submount without optimization design, the laser module with differential-mode signal input can not be measured a good result.
Kuo, San-Ching, and 郭三清. "Design and Implementation of 10Gb/s MM XFP Optical Transceiver." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/09043003498774471425.
Full text國立中央大學
通訊工程研究所碩士在職專班
97
In this thesis, the fabrication and performance of the 10Gb/s MM XFP optical transceiver modules applied in optical communication network are discussed. The optical transceiver modules consist of transmitter and receiver. The transmitters are composed by laser driver IC, Equalizer plus CDR and 850nm VCSEL (Vertical Cavity Surface Emitting Lasers) laser, where the receivers are composed by limiting amplifier IC and 850nm ROSA (Receiver Optical Sub-Assembly). In the design of optical transceiver modules, the efficiency of modules will be affected not only by the option of the properties of components but also the layout techniques of PCB and the impedance design of transmission line. Besides, we also have to consider the EMI and crosstalk problems, therefore, the design will be perfect.
Tseng, Pei-Hao, and 曾培豪. "10Gb/s Bi-directional Optical Transceiver Module Design and Fabrication." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/31021962939074068254.
Full text國立高雄應用科技大學
光電與通訊研究所
95
The purpose of this study is to develop a high-performance and low-cost 10Gbps bi-directional optical transceiver module, which was modified the existing structure of low-speed bi-directional optical assembly (BOSA) module. This module can be utilized in high-speed optical communication networks for fiber-to-the-home (FTTH) applications. This study was composed of several parts. We established an optimized BOSA structure by simulated the highest optical coupling efficiency with the relative location of every sub-component by commercial software of ZEMAX. A BOSA was built by adopting the laser welding technology. After the actual package was completed, we measured some major characteristics of BOSA, such as, L-I curve, optical emission spectrum, small-signal modulation response, and SONET OC192 transmission eye patterns. In our scheme, DC-coupling circuit is employed as the interface circuit of driver IC to drive laser in the transmitter circuit. In addition, suitable termination of impedance matching and transmission line must be designed in the layout of PCB and the parasitical effects of connecting passive components and pads with PCB need to be considered in detail. Furthermore, the impedance mismatching, the crosstalk effect of transmission line and the electromagnetic interference (ISI) in power circuit and so on are all considered thoroughly for reaching the optimum high-speed circuit design. In our experimental setup, the pseudorandom binary sequence (PRBS) 231-1 pattern with 10Gbps data rate is used to measure the performance of bi-directional optical transceiver module of transmitter and receiver separately. The optimum peak-peak jitter, rising time, and falling time are obtained as 28.2ps and 27.1ps, 33.9ps and 42.8ps, 41.5ps and 45.5ps, respectively, in the back-to-back transmitter and receiver measurement. The result of eye diagram measurement can meet the mask of OC-192 standard, and the eye mask margin can also reach 0% and 16%. In the bit error rate (BER) condition of 10-9, the receiving sensitivity was –15.5dBm.
Goerdt, Christoph. "Tau- und S-100b-Protein in der Differenzialdiagnose der bakteriellen Meningitis." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-F007-C.
Full textSchwarz, Mathias [Verfasser]. "Protein S-100B, diagnostischer und prognostischer Faktor nach Schädelhirntrauma / Mathias Schwarz." 2005. http://d-nb.info/995132534/34.
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