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Analytical method for few-mode erbium doped fiber amplifiers
Laser Physics Letters, 2020Abstract An analytical method for few-mode erbium doped fiber amplifiers (EDFAs) is proposed by introducing the uniformity coefficient of population inversion. The validity of the derivation process of the analytical method is identified by the numerical method.
Xiangwei Chen +4 more
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Few-Mode Erbium-Doped Fiber Amplifiers: A Review
Journal of Lightwave Technology, 2015Space-division multiplexing has brought a fresh perspective to the optical fiber community over the last three years and many global players around the world have been involved with both the theoretical and the experimental questions raised by this promising approach.
Laurent Bigot +2 more
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Gain equalization for a few-mode erbium-doped fiber amplifier supporting eight spatial modes
Applied Optics, 2023A trench-assisted ring few-mode erbium-doped fiber amplifier (FM-EDFA) supporting eight spatial modes is designed and proposed in this work. The gain equalization for the FM-EDFA is achieved by selecting the appropriate doping radius and concentration using a particle swarm optimization (PSO) algorithm when only the pump in the ...
Jiao Gao +8 more
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Few-mode fiber transmission with in-line few-mode erbium-doped fiber amplifier
SPIE Proceedings, 2013We demonstrate wavelength-division multiplexed (WDM) and mode-division multiplexed (MDM) transmission over a fiber recirculating loop comprising of a 25-km span of low differential mode group dispersion (DMGD) few-mode fiber carrying the LP01 and LP11 mode groups, and an inline few-mode erbium-doped fiber amplifier (FM-EDFA) providing low mode ...
Ezra Ip +19 more
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Vector Mode effects in Few Moded Erbium Doped Fiber Amplifiers
Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013, 2013We numerically investigate the effects of vector mode evolution in FM-EDFAs and show that evolution of the transverse pump and signal intensities can have a profound effect on the detailed amplifier performance depending on the nature of the pump and signal modes involved.
Ee Leong Lim +5 more
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Modal gain equalization in a few moded Erbium-doped fiber amplifier
2012 IEEE Photonics Society Summer Topical Meeting Series, 2012We present results on broadband gain equalisation in a MM-EDFA for SDM transmission obtained by optimization of the pump launch and careful tailoring of both the fiber refractive index profile and erbium ion distribution.
S. Alam +6 more
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Modal Gain Equalization of Few-mode Erbium-doped Fiber Amplifiers Enabled by Mirrored Mode Exchanges
Optical Fiber Communication Conference (OFC) 2023, 2023We propose a six-mode erbium-doped fiber amplifier with significantly reduced differential modal gain (DMG) by mirrored exchanging of the spatial modes for the first time. A DMG of <1.8 dB across the whole C-band is experimentally achieved.
Tao Xu +10 more
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Strongly Coupled Few-mode Erbium-doped Fiber Amplifiers with Ultralow Differential Modal Gain
Optical Fiber Communication Conference (OFC) 2020, 2020We propose new few-mode EDFAs based on strong mode coupling, which can be realized by distributed long-period gratings. As a result, an ultralow differential modal gain of 0.5 dB can be achieved with layered doping.
Yaping Liu +4 more
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Gain Characteristics of Few-mode Erbium-doped Fiber Amplifiers Pumped with Complex Mode Field
Asia Communications and Photonics Conference 2021, 2021We present a theoretical model of few-mode erbium-doped fiber amplifiers with complex mode fields and show that a tunable differential mode gain (DMG) can be realized by changing the components of LP11 e,x and LP11 o,y .
Xinrui Jiang, Baojian Wu
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