Relevant bibliographies by topics / Erbium doped fiber amplifier (EDFA)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Erbium doped fiber amplifier (EDFA)'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Erbium doped fiber amplifier (EDFA)"

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Mohamad, Sufian, Arni Munira Markom, Norbaiti Sidik, Mukul Chandra Paul, and Sulaiman Wadi Harun. "Performance Comparison of Zirconia, Bismuth and Silica-doped Erbium Fiber for Optical Amplification." International Journal of Engineering & Technology 7, no. 4.22 (2018): 94–96. http://dx.doi.org/10.14419/ijet.v7i4.22.22197.

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Zirconia-based Erbium-doped fiber amplifier (Zr-EDFA) is improved material optical fiber with more than 4000 ppm erbium-doped concentration to solve global demand for huge capacity carrying data information, high speed transmission and long haul with specific devices of compactness. Thus, the length of Zr-EDFA is only 50 cm as gain medium. At input pump power -30 dBm, the highest optical gain is 34 dB (1530 nm wavelength) whereas 21 dB (1535 nm wavelength) at -10 dBm. Besides, the flatness gain 21 dB with fluctuation of 1 dB is recorded for Zr-EDFA. For performance comparison, Bismuth-based Er
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AHMAD, HARITH, and SULAIMAN WADI HARUN. "DOUBLE PASS S-BAND EDFA." Journal of Nonlinear Optical Physics & Materials 15, no. 03 (2006): 303–7. http://dx.doi.org/10.1142/s0218863506003347.

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A double-pass erbium-doped fiber amplifier (EDFA) based on a depressed cladding erbium-doped fiber, which operates in the short wavelength (S-band) region is proposed and demonstrated. This amplifier provides a small signal gain as high as 30 dB at 1500 nm, using only 15 m depressed cladding erbium-doped fiber (EDF) and 130 mW of 980 nm pump power. Compared to the single-pass configuration, this amplifier shows a gain enhancement of about 14 dB for pump powers above 120 mW. However, noise figures penalties of less than 0.9 dB are obtained for these pump powers. The proposed double-pass amplifi
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Mohammad, Yusuf, and Bhandari Vijaya. "Enhancement in the Gain of EDFA in Fibre Optic Communication." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 2 (2019): 411–17. https://doi.org/10.35940/ijeat.F8422.129219.

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With the evolvement of high speed and long distance data communication systems, conventional band erbium-doped fiber amplifiers (C-EDFAs) are getting more attention in recent times. Major advantage of the C-band EDFA is that it provides the user to realize a system with wide bandwidth of 40 nm. But, from the reported works, it is evident that for Gain enhancement in C-band using EDFA is reported with the use of multiple stages, multiple pumps, Gain flattening filters etc. However, these techniques suffered from high cost, complex techniques and low performance. Here enhancement process was don
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Alaruri, Sami D. "Gain, Noise Figure and Efficiency Characteristics of an L-Band Erbium Doped Fiber Amplifier." International Journal of Measurement Technologies and Instrumentation Engineering 2, no. 4 (2012): 1–11. http://dx.doi.org/10.4018/ijmtie.2012100101.

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In this work, the construction of a single stage L-band erbium-doped fiber amplifier which incorporates a short 5.1 m erbium doped fiber coil is described. Gain and noise figure measurements as a function of forward, backward and counter-propagating CW 1480 nm pumping schemes at different pump power levels are presented. Further, the Erbium Doped Fiber Amplifier (EDFA) power conversion efficiency (PCE) calculations as a function of pump power are provided.
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Ray, Biplob Kumar, Angshuman Majumdar, and Sankar Gangopadhyay. "Radial Differentiation of Pump and Signal Intensities in Trapezoidal index EDFA for LP11 mode in Kerr nonlinear state." September 2022 4, no. 3 (2022): 182–91. http://dx.doi.org/10.36548/jei.2022.3.006.

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An Erbium-Doped Fiber Amplifier (EDFA) is an in-line component in modern all –optical telecommunication infrastructure. Different parametric characteristics of an EDFA express the suitability and excellency of performance in its real field application. Intensities of pump and signal vary with distance from the core-axis along the radius of the fiber which is one of the significant characteristics of an EDFA. Change of behavior of pump and signal intensities along the radius of the fiber in an erbium-doped dual-mode trapezoidal index fiber made amplifier due to Kerr nonlinearity phenomenon orig
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Tarayana, Andhara Ersa. "SKKL PERFORMANCE ANALYSIS OF SUBMARINE CABLE COMMUNICATION SYSTEM (SKKL) EDFA - SOA AMPLIFIER LINK JAVA – BALI USING OPTISYSTEM." Journal of Telecommunication, Electronics, and Control Engineering (JTECE) 3, no. 1 (2021): 48–53. http://dx.doi.org/10.20895/jtece.v3i1.148.

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The Submarine Cable Communication System (SKKL) is a communication backbone that is deployed under the sea that used to connect networks between islands and between countries. DWDM (Dense Wavelength Division Multiplexing) technology can support long distance communication. Repeater used to reduce the impact of loss, on the detector side the signal can be detected properly. EDFA (Erbium Doped Fiber Amplifier) and Semiconductor Optical Amplifier (SOA) amplifiers can minimize the impact of loss and increasing the gain of each amplifier. The EDFA (Erbium Doped Fiber Amplifier) is an optical amplif
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Lavrinovica, I., A. Supe, and J. Porins. "Experimental Measurement of Erbium-Doped Optical Fibre Charecteristics for Edfa Performance Optimization." Latvian Journal of Physics and Technical Sciences 56, no. 2 (2019): 33–41. http://dx.doi.org/10.2478/lpts-2019-0011.

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Abstract The paper presents experimental study of the major erbium-doped fibre amplifier (EDFA) features such as gain at low signal and gain saturation by an application of different erbium-doped optical fibres (EDFs). The main objective of the research is to estimate how the performance of EDFA varies depending on the length of doped fibre, pumping configuration scheme, as well as excitation source power. It is shown that a high gain coefficient of 16–20 dB can be practically achieved.
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Wang, Peiyuan. "Optimal Design of Fiber Amplifier based on Thulium, YttErbium and Bismuth." Highlights in Science, Engineering and Technology 46 (April 25, 2023): 134–41. http://dx.doi.org/10.54097/hset.v46i.7694.

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Although Erbium-doped fiber amplifier is still the mainstream of optical fiber communication nowadays, it has some limitations. The operation of EDFA is limited to 1530-1610nm, so it is an important research direction to explore different elements. This paper introduces three kinds of fiber amplifiers doped with different rare earth elements: Thulium-doped, YttErbium-doped, and Bismuth-doped fiber amplifiers. The optimal optimization performance is obtained through comparison logic by adjusting various parameters. The maximum gains of three rare-earth-doped fiber amplifiers in different wavele
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Saleh, Reem, and Ibrahim Mohamed. "Optimizing the Erbium-doped Fiber Amplifier (EDFA)'s Length and Location for Improved Free Space Optic (FSO) Range." International Science and Technology Journal 36, no. 1 (2025): 1–12. https://doi.org/10.62341/rsim1905.

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Although free space optical (FSO) communication has a variety of advantages, such as license free, high bandwidth, and high security, its link distance is limited by weather conditions. Incorporating an optical amplifier within the FSO transmission path is one of the most promising methods to mitigate the aforementioned problem. The use of optical amplifiers not only improve signal to noise ratio (SNR), but also increase the link distance of the FSO system. In this paper, the erbium-doped fiber (EDFA)'s length and location were optimized to improve the FSO transmission range. The optimization
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Huszaník, Tomáš, Ján Turán, and Ľuboš Ovseník. "Realization of a Long-haul Optical Link with Erbium Doped Fiber Amplifier." Carpathian Journal of Electronic and Computer Engineering 11, no. 2 (2018): 44–49. http://dx.doi.org/10.2478/cjece-2018-0018.

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Abstract The need for high capacity and bandwidth in broadband communication systems increased rapidly in a few past years. Optical fiber is now the major transmission medium for fast and reliable communication replacing the old copper-based connections. However, with the deployment of optical networks, number of problems arise. The main problem of optical networks is the amplification in the long-distance transmission. Erbium doped fiber amplifier (EDFA) is the leading technology in the field of optical amplifiers. It uses erbium doped fiber to amplify optical signal. The importance of amplif
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Dissertations / Theses on the topic "Erbium doped fiber amplifier (EDFA)"

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Wijaya, Shierly. "Fixed-point realisation of erbium doped fibre amplifer control algorithms on FPGA." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0132.

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The realisation of signal processing algorithms in fixed-point offers substantial performance advantages over floating-point realisations. However, it is widely acknowledged that the task of realising algorithms in fixed-point is a challenging one with limited tool support. This thesis examines various aspects related to the translation of algorithms, given in infinite precision or floating-point, into fixed-point. In particular, this thesis reports on the implementation of a given algorithm, an EDFA (Erbium-Doped Fibre Amplifier) control algorithm, on a FPGA (Field Programmable Gate Array) us
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Mamud, Marcelo Leme. "Desenvolvimento de recurso de aprendizagem inteligente no campo de comunicações ópticas utilizando simulação computacional." Universidade Presbiteriana Mackenzie, 2010. http://tede.mackenzie.br/jspui/handle/tede/1518.

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Made available in DSpace on 2016-03-15T19:38:16Z (GMT). No. of bitstreams: 1 Marcelo Leme Mamud.pdf: 1194376 bytes, checksum: 159feb30c5e6a599335f280e27316dbc (MD5) Previous issue date: 2010-03-03<br>Fundo Mackenzie de Pesquisa<br>In recent years there have been some proposals to develop educational tools using multimedia and interactive resources. However, most of them just transpose the traditional materials to the computer screen. The reason for this work is the gap of didactic materials to explore important subjects about photonics and optical communication systems, specially the lack of
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Dimopoulos, C. "Study of dynamic phenomena in WDM optical fibre links and networks based on EDFAs." Thesis, University of Essex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327071.

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Ono, Shunsuke. "Optical properties and gain characteristics of erbium-doped fiber amplifier." Kyoto University, 2005. http://hdl.handle.net/2433/144986.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第11688号<br>人博第294号<br>新制||人||73(附属図書館)<br>16||185(吉田南総合図書館)<br>23331<br>UT51-2005-D437<br>京都大学大学院人間･環境学研究科環境相関研究専攻<br>(主査)教授 村中 重利, 教授 林 哲介, 助教授 田部 勢津久<br>学位規則第4条第1項該当
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Khaleghi, Farideh. "Erbium-doped fiber amplifier applications in WDM transport systems and networks." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10194.

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New expressions are derived for wavelength-dependent gain variations of the EDFA due to changes in the pump power, total input power, and the power distribution among different wavelength channels in a wavelength-division multiplexing (WDM) system. A simple method is proposed to compensate for the changes in the amplifier gain spectrum. This method is based on adjusting the pump power. Two different novel gain equalization techniques are presented. A tunable coherent optical transversal filter is designed as a gain equalizer. The filter operation is based on coherently combining the tapped sig
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Males, Mladen. "Suppression of transient gain excursions in an erbium-doped fibre amplifier /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0157.

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Males, Mladen. "Suppression of transient gain excursions in an erbium-doped fibre amplifier." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0157.

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This thesis reports original work on suppression of transient gain excursions in an erbium-doped fibre amplifier (EDFA). The work presented in this thesis is a detailed investigation of four closed-loop systems that control the EDFA gain dynamically. The performance of the four closed-loop systems is evaluated by analytical work, supplemented by computer simulations and insystem measurements performed on a hardware EDFA. In addition, a stability analysis of the four closed-loop systems is presented. In the stability analysis presented in this thesis, nonlinear nature of the four closed-loop sy
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VELIZ, RICARDO ALBERTO OLIVARES. "POWER TRANSIENTS STUDY AND CONTROL TECHNIQUES IN WDM OPTICAL NETWORKS SUPPORTED BY DOPPED ERBIUM FIBER AMPLIFIER CASCATES EDFAS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8371@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>UNIVERSIDAD TÉCNICA FEDERICO SANTA MARÍA<br>Neste trabalho são estudadas cascatas de amplificadores a fibra óptica dopada com Érbio (EDFAs) inseridas em redes ópticas multiplexadas em comprimento de onda (WDM). Modelos numéricos são desenvolvidos e implementados para estudar o efeito da variação do número de canais amplificados pela cascata de EDFAs no desempenho de redes WDM submetidas a funções de adição/retirada de canais. Considerando condições em estado estacionário, é desenvolvida uma inovadora configuração amplific
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Hoffman, Mark Brandon. "Sub-picosecond pulse propagation in an erbium-doped fiber amplifier with ion-induced dispersion." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/14961.

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Malik, Bilal Hameed. "Erbium-doped fiber ring laser tuning using an intra-cavity Fabry-Perot filter." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1779.

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Books on the topic "Erbium doped fiber amplifier (EDFA)"

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P, Hanna-Hawver, and United States. National Aeronautics and Space Administration., eds. Erbium-doped fiber amplifier elements for structural analysis sensors. National Aeronautics and Space Administration, 1992.

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Book chapters on the topic "Erbium doped fiber amplifier (EDFA)"

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Weik, Martin H. "erbium-doped fiber amplifier." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_6387.

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Weik, Martin H. "erbium-doped optical fiber amplifier." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_6388.

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Kaur, Balbindar, and Subhash C. Arya. "Y-Arrangement Seven-Core Erbium-Doped Fiber Amplifier." In Proceedings of the International Conference on Computing and Communication Systems. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4084-8_52.

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Jinlong, Yu, Ma Xiaohong, Dai Jufeng, Dong Xiaoyi, and Yang Enze. "The Distributed Erbium-Doped Fiber Amplifier with Gradually Changing Doped Concentration." In Applications of Photonic Technology 2. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-9250-8_42.

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Deng, Baojia, Xianzong Chao, Xinghai Jiang, Fuping Zeng, Long Li, and Qiang Yao. "The Effect of Erbium-Doped Fiber Amplifier on CO Photoacoustic Spectral Detection." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-1852-1_51.

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Roy, Protik, and Partha Roy Chaudhuri. "Gain Flattening of Erbium-Doped Fiber Amplifier Using an In-Line M-S-M Fiber Structure." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0055-8_25.

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Awaji, Yoshinari, Hideaki Furukawa, Naoya Wada, Eddie Kong, Peter Chan, and Ray Man. "Impact of Transient Response of Erbium-Doped Fiber Amplifier for OPS/WDM and Its Mitigation." In Optical Network Design and Modeling. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72731-6_4.

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Li, Yawen, Zhanshang Su, and Cunguang Zhu. "Improving the Impact of EDFA Gain Saturation on Measurement Accuracy in FLRDS Systems Using 1D-CNN." In Advances in Transdisciplinary Engineering. IOS Press, 2025. https://doi.org/10.3233/atde241342.

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In a fiber loop ring-down spectroscopy (FLRDS) system, the gain saturation absorption effect of the erbium-doped fiber amplifier (EDFA) leads to gain fluctuations in attenuation pulses thereby significantly impacting measurement accuracy. To reduce this impact, we propose an end-to-end model using one-dimensional convolutional neural network (1D-CNN). By preprocessing FLRDS data and feeding it into the model for training, the model can predict data with unknown concentrations. This method avoids the traditional decay curve fitting process and indirectly reduces the negative impact of EDFA gain
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Awsaj, Mohammed K., H. Haldun Goktas, Murat Yucel, and Mahmood K. Awsaj. "Gain and Noise Figure Analysis: A Case of Erbium Doped Fiber Amplifier (EDFA)." In Contemporary Perspective on Science, Technology and Research Vol. 7. B P International, 2024. http://dx.doi.org/10.9734/bpi/cpstr/v7/6942b.

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Yeh, Chien-Hung. "Investigation of Broadband S-Band to L-Band Erbium-Doped Fiber Amplifier (EDFA) Module." In Some Advanced Functionalities of Optical Amplifiers. InTech, 2015. http://dx.doi.org/10.5772/61735.

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Conference papers on the topic "Erbium doped fiber amplifier (EDFA)"

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D’Amico, Andrea, Fatih Yaman, Daisuke Katsukura, et al. "Variable Temperature and Pump Power Semi-Analytical Gain Model for GFF-Embedded Single-Stage EDFAs." In Optical Fiber Communication Conference. Optica Publishing Group, 2025. https://doi.org/10.1364/ofc.2025.tu3e.5.

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A simple and accurate semi-analytical model for predicting the gain of a single-stage erbium-doped fiber amplifier embedded with an unknown gain flattening filter is proposed for precise system equalization that is crucial for submarine systems.
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Chen, Haoshuo, Roland Ryf, Nicolas K. Fontaine, et al. "Cavity-Assisted Pump Recycling for High-Efficiency Cladding-Pumped Erbium-Doped Fiber Amplifiers." In Optical Fiber Communication Conference. Optica Publishing Group, 2025. https://doi.org/10.1364/ofc.2025.th4d.5.

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We propose and experimentally demonstrate a cavity-assisted pump recy-cling scheme that significantly enhances pump utilization efficiency in cladding-pumped ED- FAs. This innovative approach achieves record-setting power conversion efficiencies in both cladding-pumped 4-core and 7-core EDFAs.
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Greenberg, Aaron P., Poul Kristensen, Miranda Mitrovic, and Siddharth Ramachandran. "Erbium-Doped Fiber Amplification of 28 OAM Modes." In CLEO: Science and Innovations. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_si.2024.stu4d.3.

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Exploiting the regime of topological confinement that has enabled scaling mode counts in passive fibers, we demonstrate the first active version of such fibers yielding an EDFA with a record high uncoupled mode count (28).
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Laming, R. I., D. N. Payne, F. Meli, G. Grasso, and E. J. Tarbox. "Saturated Erbium-Doped Fibre Amplifiers." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oaa.1990.mb3.

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It has not been generally appreciated that the erbium-doped fibre amplifier1 (EDFA) has both a saturation output power which increases with pump power, as well as an ability to operate deep in saturation without signal distortion and interchannel crosstalk2. The latter is a consequence of its slow gain dynamics and is quite different from diode-amplifier behaviour3. Most investigations of the gain-characteristics of EDFAs to date have concentrated on the small input signal regime and attempted to obtain high unsaturated gain for low-pump powers4,5, an attribute which is required for an in-line
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Kimura, Yasuo, and Masataka Nakazawa. "Gain Characteristics of Lanthanum Co-Doped Erbium Fiber Amplifier." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oaa.1991.wd5.

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Recent progress on erbium-doped fiber amplifiers (EDFAs) and their application to optical communications has been very rapid since the EDFA has many advantages such as polarisation-insensitive high gain, a low noisefigure, and low insertion loss.1 It is well known that in order to obtain a broader and relatively flatter gain profile, Aluminum (Al2O3) is co-doped into the core of the fibers.2,3 To make a wavelength independent flat gain profile is very important from the viewpoint of ultrashort pulse amplification and wavelength division multiplexing technique. Payne and Laming investigated a B
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Cheng, Y. H., N. Kagi, A. Oyobe, and K. Nakamura. "Multichannel amplification characteristics of saturated erbium-doped fiber amplifiers." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oaa.1991.thb2.

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Erbium-doped fiber amplifiers (EDFAs) are attractive for various optical fiber transmission systems and networks owing to their several advantages such as high gain and low noise. A EDFA with its high output saturation power and wide gain profile is specially suitable for wavelength-division multiplexing (WDM) applications such as multichannel CATV distribution systems [1]. In these applications, the EDFA is normally used as a post (or a booster) amplifier and operates at a saturated region. Although it has been demonstrated that the EDFA is immune to patterning effects and interchannel interf
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Blondel, J.-P., J.-F. Marcerou, J. Auge, H. Fevrier, P. Bousselet, and A. Dursin. "Erbium-Doped Fiber Amplifier Spectral Behavior In Transoceanic Links." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oaa.1991.tha2.

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Some experiments have already been presented for long haul transmission using in-line Erbium-Doped Fiber Amplifiers (EDFA) [1,2]. However, the question is to determine the actual system limitations for transoceanic links (up to 10,000 km), such as EDFA maximum output power, amplifier spacing, optical filter design. Some theoretical [3] and experimental [4] works have been published mainly with a recirculating loop.
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Way, W. I., A. C. Von Lehman, M. J. Andrejco, M. A. Saifi, and C. Lin. "Noise Figure of a Gain-Saturated Erbium-Doped Fiber Amplifier Pumped at 980 nm." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oaa.1990.tub3.

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Erbium-doped fiber amplifiers (EDFAs) have recently been extensively studied for applications in long-distance transmission[1] [2] and subscriber loop distribution systems[3][4][5]. The noise figure of the fiber amplifier is a parameter that must be considered in these systems to optimize overall system performance. Noise figures of an EDFA pumped at 1480 nm and 980 nm were reported to be near 5 dB[6], and 3 dB[7], respectively. However, these numbers were measured when the amplifiers were operated in the linear region. An EDFA may be operated in the gain saturation region when it is used as a
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Uehara, Shingo. "Pump Sources for Erbium-Doped Fiber Amplifiers." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oaa.1990.wa1.

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Erbium-doped fiber amplifiers (EDFAs) have attracted much interest in the field of optical transmission research, due to their superior amplification at the third telecommunication window (around 1550 nm) [1-3]. Pump sources, which supply energy to the amplifying media, are major component of the EDFA. Semiconductor pump sources are indispensable for practical EDFAs which require compact and efficient pumping. Experimental application of EDFAs to transmission systems has been progressing with the help of high-power laser diode pump sources. This paper describes the state-of-the-art EDFA semico
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Marcerou, J. F., H. Fevrier, J. Auge, et al. "Erbium-Doped Fibers Improvement For Optical Amplifier Modules." In Optical Amplifiers and Their Applications. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oaa.1990.md7.

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Erbium-doped fiber amplifiers (EDFA) are very attractive for all optical long span transimissions in the third telecommunication spectral window. Recently, over 2000km repeaterless transmission experiments have been performed with EDFA [1]. Two pump wavelengths appear truly excellent because of their very high performances and laser diode pumping feasibility : 1.48μm and 0.98μm, each of them having its own specificity [2]. Today’s best reported pump efficiency are 2.6dB/mW for color center laser pumping near 1.48μm [3] and 4.9dB/mW for a 0.98μm laser diode pumped amplifier [4]. The increase of
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