27 November 2007 Investigation on gain-clamped characteristics of ring cavity L-band EDFA
Author Affiliations +
Proceedings Volume 6781, Passive Components and Fiber-based Devices IV; 67814F (2007) https://doi.org/10.1117/12.743552
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China
A novel gain-clamped Long wavelength band erbium doped fiber amplifier (L-band EDFA) based on ring erbium-doped fiber laser cavity was demonstrated. By using a fiber Bragg grating (FBG) at the output end of the amplifier, a portion of forward conventional band (C-band) amplified spontaneous emission (ASE) was reflected back into the system, this new design provided a good gain clamping and decreased noise effectively. It used 1480nm laser diode (LD) to pump high Er3+ −concentration erbium-doped fiber for higher efficiency and lower noise figure (NF). The gain was clamped at 17.5dB with a variation of 0.3 dB from input signal power of -30dBm to -12dBm for a pump power of 180mW. By adjusting the intra-cavity loss, the gain reached 19.78dB with inputting small signal and NF below 5dB was obtained. At the longer wavelength (1614nm) of L-band 9.2dB gain was obtained.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hongwei Yan, Hongwei Yan, Yubin Guo, Yubin Guo, Bing Bai, Bing Bai, Tianshu Wang, Tianshu Wang, Jiayu Huo, Jiayu Huo, } "Investigation on gain-clamped characteristics of ring cavity L-band EDFA", Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67814F (27 November 2007); doi: 10.1117/12.743552; https://doi.org/10.1117/12.743552

Back to Top