Title :
Low-Noise Fiber Raman Amplifiers Based on a Raman Ring Fiber Oscillator
Author :
Ahn, Joon Tae ; Seo, Hong-Seok ; Park, Bong Je ; Chung, Woon Jin ; Kim, Kyong Hon
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon
Abstract :
We propose two discrete fiber Raman amplifier schemes using Raman ring fiber oscillator, a two-stage scheme, and a forward pumping scheme, to reduce double Rayleigh backscattering noise at high gains over 20 dB. Both schemes have low noise characteristics compared to a previous scheme. Bit-error-rate measurements at 10 Gb/s show power penalty free operation for the two-stage scheme at a gain of 25 dB.
Keywords :
Raman lasers; laser beams; optical fibre amplifiers; ring lasers; Raman ring fiber oscillator; Rayleigh backscattering noise; low-noise fiber raman amplifiers; Doped fiber amplifiers; Low-noise amplifiers; Optical fiber amplifiers; Optical fibers; Optical filters; Optical noise; Optical pumping; Ring oscillators; Semiconductor optical amplifiers; Stimulated emission; Optical communications; Raman amplifier; Raman laser; optical fiber amplifier;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.908452
