10 January 2005 Low-noise-figure gain-clamped L-band double-pass erbium-doped fiber ring lasing amplifier with an interleaver
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Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.572205
Event: Asia-Pacific Optical Communications, 2004, Beijing, China
Abstract
A new design of all-optical gain-clamped L-band double-pass (DP) erbium-doped fiber amplifier (EDFA) has been demonstrated, in which, the input port and the odd-channel output port of interleaver are connected with a DP configuration EDF through a circulator to form lasing ring cavity for clamping gain, and the even port is utilized to export the amplified signals. A low NF can be achieved because the lasing co-propagates with the signal, and the lasing is exported separately from the amplified signal thanks to interleaver. Meanwhile, the fiber Bragg grating incorporated in DP configuration suppresses the backward ASE generation, and therefore improves efficiently the gain and lowers the NF. In such a way, the clamped gain of 16.3dB with a variation below 0.2dB and the noise figure below 5dB is achieved on the new L-band gain-clamped EDFA.
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Jun Hua Ji, Jun Hua Ji, Li Zhan, Li Zhan, Lilin Yi, Lilin Yi, C. C. Tang, C. C. Tang, Qinghao Ye, Qinghao Ye, Yuxing Xia, Yuxing Xia, } "Low-noise-figure gain-clamped L-band double-pass erbium-doped fiber ring lasing amplifier with an interleaver", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.572205; https://doi.org/10.1117/12.572205
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