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Journal articles on the topic 'CWDM (Coarse Wavelength Division Multiplexing)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hambali, Akhmad, and Brian Pamukti. "Bidirectional Network in Hybrid Coarse Wavelength Division Multiplexing/Time Division Multiplexing (CWDM/TDM) on NG-PON2 for 40 Gbps." Jurnal Elektronika dan Telekomunikasi 19, no. 1 (2019): 13. http://dx.doi.org/10.14203/jet.v19.13-19.

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In this research, we propose hybrid Coarse Wavelength Division Multiplexing/Time Division Multiplexing (CWDM/TDM)-Passive Optical Networks (PON) scheme for optimizing the new technology of Gigabit-PON (GPON) called Next Generation-PON Stage 2 (NG-PON2). The simulation of using this scheme proved that Q-Factor increase and Bit Error Rate (BER) decreased, significantly. We use CWDM scheme for downstream while TDM is used for upstream, and we assimilate both of them with new configuration in bidirectional cable setting. CWDM is used due to low nonlinearity effect like Kerr effects. It has the sam

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2

Fardani, Ahmad Syahrul, and Indri Neforawati. "Instalasi Kabel Fiber Optic dan Perangkat Switch untuk Layanan Internet Menggunakan Metode CWDM oleh PT. XYZ." MULTINETICS 5, no. 1 (2020): 46–56. http://dx.doi.org/10.32722/multinetics.v5i1.2787.

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Layanan internet adalah sebuah layanan dengan kecepatan tinggi berbasis teknologi VPN MPLS dengan lastmile fiber optic sehingga mampu memberikan kualitas layanan dan keamanan jaringan yang terbaik. Selain itu terdapat berbagai metode komunikasi. Salah satunya metode CWDM (Coarse Wavelength Division Multiplexing) yang merupakan salah satu teknologi WDM (Wavelength Division Multiplexing) yang memiliki channel spacing lebih lebar dibandingkan dengan teknologi WDM sebelumnya. Metode CWDM ini diimplementasikan sebagai pengembangan pada proses transmisi data guna mempercepat transfer data dan mening

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3

Nguyen, HoangViet. "An Easy In-Service Optical IP Network System for Residential Complex, Employing 1550 nm-Band CWDM and Layer-3 Switch." Journal of Optical Communications 40, no. 4 (2019): 423–28. http://dx.doi.org/10.1515/joc-2017-0116.

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Abstract We have proposed and demonstrated a novel architecture to implement in Coarse Wavelength-Division-Multiplexing (CWDM) technologies to give integrated broadband services for residential complex use system. For keeping the speed of 1000 Mbps at the bus IFs, CWDM technology is employed, and eight wavelengths are allocated to eight bus IFs, respectively. We also have evaluated characteristics of the transmission by calculated and measured the throughputs. The optical IP network can be easy in-service by adjusting the number of wavelengths and optical transceivers. We believe this novel sc

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4

Kwon, Yoon-Koo, Kyoung-Su Park, Ji-Hyun Lee, and Chang-Bong Kim. "The Research on the Heated CWDM(Coarse Wavelength Division Multiplexing) Optical Transceiver for the Wavelength Compensation at the Low Temperature." Journal of the Korea Academia-Industrial cooperation Society 13, no. 3 (2012): 1263–69. http://dx.doi.org/10.5762/kais.2012.13.3.1263.

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5

Dupont, Samuel H., Jean-Claude Kastelik, and Joseph Gazalet. "340 nm Bandwidth Automatic Dynamic Optical Equalizer for CWDM Networks." Advances in Optical Technologies 2013 (October 23, 2013): 1–5. http://dx.doi.org/10.1155/2013/420140.

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This paper presents an automatic optical equalizer based on a pair of in-house developed high efficiency, acousto-optic variable optical attenuators (AO-VOAs). The system is polarization insensitive and presents a wide bandwidth compatible with coarse wavelength division multiplexing (CWDM) requirements: 340 nm. The system operation is automatic and bidirectional and equalization is obtained in one single iteration of algorithm loop.

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6

Ismail, Khadijah, P. S. Menon, Sahbudin Shaari, Abang Annuar Ehsan, Norhana Arsad, and A. Ashrif A. Bakar. "Link Power Level Improvements in an Amplified 8-Channel CWDM System with Hybrid EDFA-SOA Pre-Amplifier." Applied Mechanics and Materials 799-800 (October 2015): 1361–65. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.1361.

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The link power improvement in a coarse wavelength division multiplexing (CWDM) system which is transmitted using a hybrid erbium-doped fiber amplifier (EDFA) and semiconductor optical amplifier (SOA) scheme as a pre-amplifier, is discussed. The network is designed for amplifying 8 CWDM channels ranging from 1471 nm to 1611 nm. The hybrid amplifiers’ gain measurement is obtained from experimental work with gain peak at 22 dB which is observed at 1531 nm. The amplifiers also caused power increment of 5.06 dB in the transmission link before the signal is split individually at the receiving end. B

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7

Zulherman, Dodi, Sri Utami, and Fahmi Fahmi. "Comparative Analysis of Erbium Doped Fiber Amplifier (EDFA) and Raman Optical Amplifier (ROA) in Nonlinear-CWDM System." JURNAL INFOTEL 10, no. 3 (2018): 144. http://dx.doi.org/10.20895/infotel.v10i3.378.

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The massive demands for high-rate application drove the telecommunication service to use large bandwidth capacity. The Coarse Wavelength Division Multiplexing (CWDM), a common use in Metro-WDM, can be a solution to provide large bandwidth in optical communications. In a communications system, there are attenuation and nonlinear effect decreasing the system performance. In order to overcome the limitation imposed by electrical regeneration to maintain system performance, a means of optical amplification was sought. In this paper presents the comparison of two competing technologies emerged: Erb

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8

Ismail, Khadijah, P. Susthitha Menon, Sahbudin Shaari, et al. "Gain performance of cascaded and hybrid semiconductor optical amplifier in CWDM system." Journal of Nonlinear Optical Physics & Materials 23, no. 01 (2014): 1450007. http://dx.doi.org/10.1142/s0218863514500076.

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The incorporation of cascaded and hybrid-type optical amplifiers into the optical fiber link is advantageous for the purpose of achieving wide gain bandwidth of multi-wavelength coarse wavelength division multiplexing (CWDM) systems. Different amplifiers whose operating gain region differ from each other are connected in cascade, thus providing better gain performance as the overall gain is combined and flattened over a larger spectrum. In this paper, the effect of the crossover of the uniform gain of the semiconductor optical amplifier (SOA) and the nonuniform gain of erbium-doped fiber ampli

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9

Torres-Gómez, Ismael, Alejandro Martínez-Rios, Gilberto Anzueto-Sánchez, Daniel E. Ceballos-Herrera, and Guillermo Salceda-Delgado. "Transverse Load and Temperature Sensing Using Multiplexed Long-Period Fiber Gratings." Photonics 8, no. 1 (2020): 1. http://dx.doi.org/10.3390/photonics8010001.

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The simultaneous measurement of transverse load and temperature using two long-period fiber gratings multiplexed in the wavelength domain is presented experimentally. For this, a mechanically induced long-period fiber grating (MI-LPFG) and a long-period fiber grating inscribed by a continuous-wave CO2 laser (CO2 LPFG) are connected in cascade. First, the transverse load and the temperature measurements were individually performed by the multiplexed long-period fiber gratings configuration. The MI-LPFG is subject to a transverse load variation from 0–2000 g with steps of 500 g, whereas the CO2

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10

Yue, Yang, Qiang Wang, Jian Yao, Jason O’Neil, Daniel Pudvay, and Jon Anderson. "400GbE Technology Demonstration Using CFP8 Pluggable Modules." Applied Sciences 8, no. 11 (2018): 2055. http://dx.doi.org/10.3390/app8112055.

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In this article, we first review the current status of 400GBASE client-side optics standards and multi-source agreements (MSAs). We then compare different form factors for 400GE modules, including CFP8, OSFP and QSFP-DD. The essential techniques to implement 400GE, such as pulse amplitude modulation (PAM4), forward error correction (FEC) and a continuous time-domain linear equalizer (CTLE), are discussed. A 400GE physical interface card (PIC) in Juniper’s PTX5000 platform has been developed, conforming to the latest IEEE802.3bs standard. To validate the PIC’s performance, a commercial optical

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11

Wan, Zhujun, Fengguang Luo, and Zhixiang Luo. "Optimization of miniature coarse wavelength division multiplexing module." Optics Communications 282, no. 2 (2009): 204–7. http://dx.doi.org/10.1016/j.optcom.2008.09.087.

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12

Sakharov, V. K., L. P. Prokof’eva, and V. V. Shcherbakov. "A multiplexer/demultiplexer for coarse wavelength-division multiplexing." Technical Physics Letters 30, no. 1 (2004): 30–32. http://dx.doi.org/10.1134/1.1646707.

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13

Tian, Huiping, Guansheng Shen, Weijia Liu, and Yuefeng Ji. "Integration of both dense wavelength-division multiplexing and coarse wavelength-division multiplexing demultiplexer on one photonic crystal chip." Optical Engineering 52, no. 7 (2013): 076110. http://dx.doi.org/10.1117/1.oe.52.7.076110.

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14

Cahill, M. J. L., G. J. Pendock, and D. D. Sampson. "Hybrid coherence multiplexing/coarse wavelength-division multiplexing passive optical network for customer access." IEEE Photonics Technology Letters 9, no. 7 (1997): 1032–34. http://dx.doi.org/10.1109/68.593390.

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15

Brik, F., and A. Labbani. "Optimization of a Tunable Photonic Crystal Filter for Coarse Wavelength Division Multiplexing." Journal of Nano- and Electronic Physics 12, no. 6 (2020): 06035–1. http://dx.doi.org/10.21272/jnep.12(6).06035.

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16

Chou, H. H., W. A. Crossland, T. D. Wilkinson, H. T. Chou, and N. Collings. "Implementation of coarse wavelength division multiplexing multi-wavelength routing switch core for storage area networks." IET Optoelectronics 4, no. 2 (2010): 64–77. http://dx.doi.org/10.1049/iet-opt.2009.0044.

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17

Jui-Ming Hsu, Che-Wei Yao, and Jian-Zhi Chen. "Wavelength-Tunable Dispersion Compensating Photonic Crystal Fibers Suitable for Conventional/Coarse Wavelength Division Multiplexing Systems." Journal of Lightwave Technology 33, no. 11 (2015): 2240–45. http://dx.doi.org/10.1109/jlt.2014.2380439.

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18

Yam, Scott S.-H., Youichi Akasaka, Yoshinori Kubota, and Hiroyuki Inoue. "Hybrid doped fiber amplifier with 100-nm bandwidth for coarse wavelength division multiplexing." Optics Communications 249, no. 4-6 (2005): 539–42. http://dx.doi.org/10.1016/j.optcom.2005.01.050.

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19

Cherchi, Matteo. "Design scheme for Mach-Zehnder interferometric coarse wavelength division multiplexing splitters and combiners." Journal of the Optical Society of America B 23, no. 9 (2006): 1752. http://dx.doi.org/10.1364/josab.23.001752.

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20

M.D, Anjana, Dr Usha Rani K. R, and Akshata Aski. "A Review on Importance of DWDM Technology in Optical Networking." Journal of University of Shanghai for Science and Technology 23, no. 06 (2021): 640–46. http://dx.doi.org/10.51201/jusst/21/05298.

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Optical communication uses light signals for transmitting information from source to destination. Optical fiber communication has been more popular for long-distance data transfer in recent years due to various benefits such as low loss, low cost, simple amplification, minimal interference, and lightweight. A simple optical telecommunication system consists of a transmitter, a medium, and a receiver. Wavelength Division Multiplexing (WDM) is a significant improvement in optical communication. WDM is basically used for improving spectral efficiency and to handle more data from several clients.

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21

Sperti, D., P. S. André, B. Neto, et al. "Experimental assessment of some Raman fiber amplifiers solutions for coarse wavelength division multiplexing applications." Photonic Network Communications 16, no. 3 (2008): 195–202. http://dx.doi.org/10.1007/s11107-008-0130-5.

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22

Huang, W. H., Y. Amitai, and A. A. Friesem. "Volume Phase Transmission Gratings and Compact Configurations for Coarse Wavelength Division Multiplexing and Demultiplexing." Optical Review 10, no. 1 (2003): 8–12. http://dx.doi.org/10.1007/s10043-003-0008-9.

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23

Liu Xue, 刘雪, 陈鹤鸣 Chen Heming, and 胡宇宸 Hu Yuchen. "An Integrated Device for Photonic-Crystal Electro-Optic Modulation and Coarse Wavelength-Division Multiplexing." Chinese Journal of Lasers 48, no. 3 (2021): 0306002. http://dx.doi.org/10.3788/cjl202148.0306002.

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24

Anselm, K. A., W. Y. Hwang, H. W. Ren, D. Zhang, and J. Um. "Manufacturing of laser diodes grown by molecular beam epitaxy for coarse wavelength division multiplexing systems." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 26, no. 3 (2008): 1167. http://dx.doi.org/10.1116/1.2837846.

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25

Huang, Yen-Wen, Ssu-Tse Hu, Shieh-Yueh Yang, et al. "Tunable diffraction of magnetic fluid films and its potential application in coarse wavelength-division multiplexing." Optics Letters 29, no. 16 (2004): 1867. http://dx.doi.org/10.1364/ol.29.001867.

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26

Bucio, Thalía Domínguez, Ali Z. Khokhar, Goran Z. Mashanovich, and Frederic Y. Gardes. "N-rich silicon nitride angled MMI for coarse wavelength division (de)multiplexing in the O-band." Optics Letters 43, no. 6 (2018): 1251. http://dx.doi.org/10.1364/ol.43.001251.

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27

ADACHI, Takuya, Kazushi OKADA, Fumikazu OOHIRA, et al. "1110 Fabrication of Arrayed Waveguide Grating using micro-dies technique for Coarse Wavelength Division Multiplex system." Proceedings of the Conference on Information, Intelligence and Precision Equipment : IIP 2007 (2007): 33–36. http://dx.doi.org/10.1299/jsmeiip.2007.33.

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28

Millett, Ronald, Jamie Ramsey, Przemek Bock, et al. "Synthesis of Planar Reflective Gratings for Silicon Interconnects." Advances in Optical Technologies 2008 (May 21, 2008): 1–8. http://dx.doi.org/10.1155/2008/315724.

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The design and simulations of planar reflective gratings for building optical interconnects in silicon-on-insulator (SOI) were studied for a range of silicon core thicknesses of 0.1 to 10 μm. The verticality of the grating facets has been shown to be the main contributing factor to the cumulative crosstalk in thick silicon cores. The dispersion property of the slab was found to limit the minimal thickness of the core for polarization-insensitive gratings. The effects of polarization-dependent confinement on optical crosstalk were studied. The findings were used to design and simulate a polariz

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29

Li, Ming, Xuepeng Li, Junhui Li, and Kaixin Chen. "Tunable broadband filter based on lithium-niobate asymmetric Mach–Zehnder interferometer for coarse wavelength-division multiplexing applications." Optical Engineering 58, no. 03 (2019): 1. http://dx.doi.org/10.1117/1.oe.58.3.037101.

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30

Banerjee, Anirudh. "Design of optical filters for coarse wavelength division multiplexing by using down binary number sequence multilayer structures." Journal of the Optical Society of America B 26, no. 3 (2009): 537. http://dx.doi.org/10.1364/josab.26.000537.

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31

Han, Young-Geun, Sang Bae Lee, Chang-Seok Kim, and Myung Yung Jeong. "Tunable optical add-drop multiplexer based on long-period fiber gratings for coarse wavelength division multiplexing systems." Optics Letters 31, no. 6 (2006): 703. http://dx.doi.org/10.1364/ol.31.000703.

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32

Uddin, Nezam, Qiwen Sheng, Seungsup Lee, et al. "Multichannel Fiber-Optic Silicon Fabry–Pérot Interferometric Bolometer System for Plasma Radiation Measurements." Photonics 8, no. 9 (2021): 344. http://dx.doi.org/10.3390/photonics8090344.

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A single-channel fiber-optic bolometer system based on a high-finesse silicon Fabry–Pérot interferometer (FPI) was previously reported, intended to measure plasma radiation from the magnetically confined fusion chamber. Recently, we developed a multichannel fiber-optic bolometer system with five bolometers multiplexed using a coarse wavelength division multiplexer (CWDM) and interrogated with a white-light system involving a superluminescent light-emission diode source and a high-speed spectrometer. One of the bolometers was used as the reference bolometer to compensate for the ambient tempera

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33

Chhipa, Mayur Kumar, Massoudi Radhouene, Savarimuthu Robinson, and Bhuvneshwer Suthar. "Improved dropping efficiency in two-dimensional photonic crystal-based channel drop filter for coarse wavelength division multiplexing application." Optical Engineering 56, no. 1 (2017): 015107. http://dx.doi.org/10.1117/1.oe.56.1.015107.

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34

Elosua, C., R. A. Perez-Herrera, M. Lopez-Amo, et al. "An amplified coarse wavelength division multiplexing self-referencing sensor network based on phase-shifted FBGs in transmissive configuration." Measurement Science and Technology 20, no. 3 (2009): 034017. http://dx.doi.org/10.1088/0957-0233/20/3/034017.

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35

Hu, Ying, Gui Qiang Liu, Xiang Nan Zhang, and Zheng Jie Cai. "A New Two-Dimensional Photonic Crystal Channel Drop Filter Based on Two-Resonant Cavities." Advanced Materials Research 760-762 (September 2013): 397–400. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.397.

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In this paper, a channel drop filter (CDF) is composed of two cubic lattice circular ring resonator cavities and point micro-cavities in a two-dimensional photonic crystal. The photonic band gap is calculated using the plane wave expansion (PWE) method and the optical characteristics of proposed structure are studying by the finite difference time domain (FDTD) method with perfectly matched layers (PMLs) acting as the boundary conditions . Two different wavelengths centered at 1773 nm and 1742 nm have been successful separation in this CDF. These demonstrate that our proposed structure is suit

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36

M. El-Hageen, Hazem, Aadel M. Alatwi, and Ahmed Nabih Zaki Rashed. "Spatial optical transmitter based on on/off keying line coding modulation scheme for optimum performance of telecommunication systems." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 1 (2021): 305. http://dx.doi.org/10.11591/ijeecs.v21.i1.pp305-312.

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<p><span>This study has presented a spatial optical transmitter based on on off keying line coding modulation scheme for the optimum performance of telecommunication systems. The encircled flux versus fiber core radius, the 3D graph for fiber mode versus core radius, and the signal power level in dBm versus wavelength through coarse wavelength division multiplexing with a fiber length of 20 km are presented and discussed in detail. The total power measured in W and dBm as well as the signal power amplitude level obtained through the infinite impulse response (IIR) filter based on b

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37

Mizusawa, Jun-Ichi. "Test-Bed Design and Implementation of High-Definition Multimedia Interface Based 3D Broadcast Coarse Wavelength-Division Multiplexing Access Network." Fiber and Integrated Optics 30, no. 5 (2011): 336–46. http://dx.doi.org/10.1080/01468030.2011.608152.

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38

Suda, Satoshi, and Fumio Koyama. "Characterization of Spot-Size Dependence of Coarse Wavelength Division Multiplexing Dielectric Multilayer Thin-Film Filters for Planner Lightwave Circuit Platforms." Japanese Journal of Applied Physics 44, No. 39 (2005): L1225—L1227. http://dx.doi.org/10.1143/jjap.44.l1225.

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39

Lin, Yen-Juei, San-Liang Lee, and Chiu-Lin Yao. "Four-channel coarse-wavelength division multiplexing demultiplexer with a modified Mach–Zehnder interferometer configuration on a silicon-on-insulator waveguide." Applied Optics 42, no. 15 (2003): 2689. http://dx.doi.org/10.1364/ao.42.002689.

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40

Feldman, R. D., T. H. Wood, J. P. Meester, and R. F. Austin. "Broadband upgrade of an operating narrowband single-fiber passive optical network using coarse wavelength division multiplexing and subcarrier multiple access." Journal of Lightwave Technology 16, no. 1 (1998): 1–8. http://dx.doi.org/10.1109/50.654977.

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41

Zhang, Xiang Nan, Gui Qiang Liu, Ying Hu, Zheng Jie Cai, and Yuan Hao Chen. "A New Two-Sided Coupling Channel Drop Filter Based on a Two-Dimensional Photonic Crystal." Advanced Materials Research 760-762 (September 2013): 417–20. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.417.

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We design a new two-sided coupling channel drop filter (CDF) based on a two-dimensional (2D) photonic crystal (PC). Three channels formed by line defects for light propagation, two L4 resonators positioned at both sides of the input waveguide for light coupling, and one point defect micro-cavity in the bus waveguide for wavelength-selective reflection are introduced into the PC structure. The optical characteristics of this proposed structure are calculated by finite-difference time-domain (FDTD) method combined with the perfectly matched layers (PMLs) as the boundary conditions. Three wavelen

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42

Chuang, Kuo-Chih, Chien-Ching Ma, and Hwa-Chun Wang. "Simultaneous measurement of dynamic displacement and strain in a single fiber using coarse wavelength-division multiplexing and fiber Bragg-grating filter-based sensing system." Applied Optics 55, no. 9 (2016): 2426. http://dx.doi.org/10.1364/ao.55.002426.

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43

Jung, Youngbeom. "Four-channel signal-receiver optical subassembly module using a thin-film filter-based coarse-wavelength-division-multiplexing demultiplexer for monitoring 22.9-kV XLPE cable joints." Optical Engineering 57, no. 10 (2018): 1. http://dx.doi.org/10.1117/1.oe.57.10.100505.

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44

Sánchez-Azqueta, Carlos, Erick Guerrero, Cecilia Gimeno, and Santiago Celma. "A Reconfigurable Radio-Frequency Converter IC in 0.18 µm CMOS." Electronics 8, no. 10 (2019): 1146. http://dx.doi.org/10.3390/electronics8101146.

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This work presents a reconfigurable RF converter for DVB-T television applications using triple-play over GPON. The system takes the DVB-T input, a wavelength division multiplexing (WDM) signal with spectral inversion in the range from 47 M Hz –1000 M Hz , up-converts its frequency to the band-pass of a highly selective surface-acoustic wave (SAW) filter centered at 1 . 3 G Hz , and then down-converts it so that it is compatible with the antenna input of conventional television sets. The designed RF converter incorporates two pairs of frequency synthesizer and mixer, based, respectively, on an

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45

Han, Yang, Djordjevic, et al. "Joint Probabilistic-Nyquist Pulse Shaping for an LDPC-Coded 8-PAM Signal in DWDM Data Center Communications." Applied Sciences 9, no. 23 (2019): 4996. http://dx.doi.org/10.3390/app9234996.

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M-ary pulse-amplitude modulation (PAM) meets the requirements of data center communication because of its simplicity, but coarse entropy granularity cannot meet the dynamic bandwidth demands, and there is a large capacity gap between uniform formats and the Shannon limit. The dense wavelength division multiplexing (DWDM) system is widely used to increase the channel capacity, but low spectral efficiency of the intensity modulation/direct detection (IM/DD) solution restricts the throughput of the modern DWDM data center networks. Probabilistic shaping distribution is a good candidate to offer u

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46

Torres-Gómez, Ismael, Daniel E. Ceballos-Herrera, and Karla M. Salas-Alcantara. "Mechanically-Induced Long-Period Fiber Gratings Using Laminated Plates." Sensors 20, no. 9 (2020): 2582. http://dx.doi.org/10.3390/s20092582.

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This work presents a formation method of mechanically-induced long-period fiber gratings using laminated plates. The mechanically-induced long-period fiber grating is temporarily inscribed by compressing the optical fiber between a flat plate and the proposed laminated plate. In turn, the new laminated plate consists of a parallel assembling of single-edged utility blades. We present the experimental characterization of mechanically-induced long-period fiber gratings while employing three laminated plates with a period of 480 ± 20 µm and low duty cycles. These mechanically-induced long-period

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47

Kumar, K. Vinoth, P. Venkatesh Kumar, Ahmed Nabih Zaki Rashed, Abd El–Naser A. Mohamed, Mohamed S. Tabbour, and Mohamed El-Assar. "DWDM Channel Spacing Effects on the Signal Quality for DWDM/CWDM FTTx Network." Journal of Optical Communications, February 7, 2019. http://dx.doi.org/10.1515/joc-2019-0012.

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AbstractIn this paper, two models of fiber-to-the-x (FTTx) networks are provided, one of hybrid dense wavelength division multiplexing/coarse wavelength division multiplexing (DWDM/CWDM) with high subscriber’s allocated bandwidth, and the other of hybrid ultra-dense wavelength division multiplexing/coarse wavelength division multiplexing (UDWDM/CWDM) with high network capacity. The effect of the fiber chromatic dispersion on the signal quality was demonstrated. The behavior of the network with respect to the changing of the DWDM channel spacing and the relation between the channel spacing and

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48

Salameh, Haythem Bany, Mohammad Al-Rabaie, Abdallah Khreishah, and Raed Al-Zubi. "A Novel Demultiplexing Design for Coarse WDM: Exploiting Material Dispersion." Journal of Optical Communications 38, no. 3 (2017). http://dx.doi.org/10.1515/joc-2015-0092.

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AbstractIn this paper, a compact low-cost simple-to-fabricate demultiplexer is proposed for coarse wavelength division multiplexing (CWDM). The device consists of two layers of the same semiconductor material: the first layer is homogeneous medium with a given refractive index

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Eid, Mahmoud M. A., Said Mohammed Said, and Ahmed Nabih Zaki Rashed. "Gain/noise figure spectra of average power model Raman optical amplifiers in coarse wavelength multiplexed systems." Journal of Optical Communications, February 3, 2021. http://dx.doi.org/10.1515/joc-2020-0289.

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Abstract This work clarifies the gain/noise figure spectra of average power model Raman optical amplifiers in coarse wavelength multiplexed systems. The proposed model have a total received power of 16.306 dBm, signal gain of 21.68 dB, and noise figure of 3.802 dB at the same operation parameters of the previous model which operated at length 0.2 km at the optical fiber coarse wavelength division multiplexing (CWDM) and transmitted signal power is 20 dBm. So the updates help us to greatly improve the system.

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Jayabarathan, Jayson K., and S. Robinson. "Investigation on Pointing Error in Multi-Beam Free Space Optical Communication System." Journal of Optical Communications, December 13, 2018. http://dx.doi.org/10.1515/joc-2018-0189.

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AbstractFree space optical (FSO) communication has fascinated a lot of attention for a variety of applications in telecommunication area. It is dream of every researcher and telecommunication society to make it a real alternative solution for the last mile problem, to replace fiber optics. FSO is much favored because of its low maintenance cost and deployment time. Pointing error is one of the main challenges in FSO communication system which affects its performance especially at high data links that leads to significant performance degradation. In this paper, the impact of pointing error for

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