Title :
Wavelength conversion based on FWM with double orthogonal pump in a semiconductor-fiber ring laser
Author :
Chi, Nan ; Qi, Jiang ; Xu, Lin ; Zhen, Yuan ; Guan, Kejian ; Chen, Shuqiang
Author_Institution :
Opt. Commun. Center, Beijing Univ. of Posts & Telecommun., China
fDate :
5/1/2001 12:00:00 AM
Abstract :
A new scheme is presented in this letter that, by using double orthogonal pump in a semiconductor fiber ring laser, gives a better solution to improve the conversion efficiency and to deduce noise figure of wavelength converters based on four-wave mixing. The noise figure in this scheme is smaller than normal broad-band orthogonal-pump scheme. Experimental results show nearly flat conversion efficiency and signal-to-noise ratio in a wavelength-shift range of more than 40 nm.
Keywords :
laser noise; multiwave mixing; optical fibre amplifiers; optical pumping; optical wavelength conversion; ring lasers; semiconductor optical amplifiers; wavelength division multiplexing; FWM; broad-band orthogonal-pump scheme; conversion efficiency; double orthogonal pump; flat conversion efficiency; four-wave mixing; noise figure; optical wavelength conversion; semiconductor-fiber ring laser; signal-to-noise ratio; wavelength converters; wavelength-shift range; Fiber lasers; Four-wave mixing; Laser excitation; Laser noise; Noise figure; Pump lasers; Ring lasers; Semiconductor lasers; Signal to noise ratio; Wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
