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L-band all-optical gain-clamped EDFA by utilizing C-band backward ASE

✍ Scribed by Hao Zhang; Yanli Jin; Qingying Dou; Yange Liu; Shuzhong Yuan; Xiaoyi Dong

Book ID
103871561
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
154 KB
Volume
260
Category
Article
ISSN
0030-4018

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✦ Synopsis

By using an optical circulator and C/L-band wavelength division multiplexer to recycle the C-band backward ASE, an L-band gainclamped erbium-doped fiber amplifier is presented. We have experimentally studied the static gain clamping property of this amplifier. As the ASE feedback attenuation is set to 0, the gain at 1585 nm can be clamped at 18.84 ± 0.26 dB within dynamic range of 25 dB and the critical power reaches about À15.09 dBm. The gain variation and saturated output power at 1585 nm for 0 dB attenuation are 1 dB lower and 2.17 dB higher than those for 30 dB attenuation, which indicates that the L-band EDFA gain can be effectively clamped via the ASE injection technique.

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