Dynamic gain fluctuations in a ring-laser gainclamped EDFA submitted to WDM traffic fluctuations are experimentally investigated. We measured the effect of relaxation oscillations that build up with laser action upon the BER on a 10-Gb/s optical transmission. Power penalties up to 1 dB are observed
L-band all-optical gain-clamped erbium-doped fiber amplifier via ASE reflection technique
✍ Scribed by Hao Zhang; Qingying Dou; Yanli Jin; Tuan Guo; Lihui Liu; Yange Liu; Shuzhong Yuan; Xiaoyi Dong
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 94 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
We present an L‐band all‐optical gain‐clamped erbium‐doped fiber amplifier with a fiber‐loop mirror as the ASE reflector. By using the combination of a C/L‐band wavelength division multiplexer (WDM) and fiber‐loop mirror, the backward C‐band amplified spontaneous emission (ASE) is reflected back into the erbium‐doped fiber and works as the control light. The static gain level of this amplifier can be adjusted by changing the ASE feedback. The experimental results show that the EDFA gain can be effectively clamped via this ASE reflection technique. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 852–854, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21496
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## Abstract Gain clamping in a long‐wavelength‐band erbium‐doped fiber amplifier (L‐band EDFA) using a C/L‐band WDM coupler is demonstrated. The gain for the amplifier is clamped at 15.5 dB with a gain variation of less than 0.2 dB from input signal power ranging from −40 to −14 dBm with almost neg