Title :
Multiplexing Self-Mixing Interference in Fiber Ring Lasers
Author :
Dai, Xiajuan ; Wang, Ming ; Zhou, Cuirong
Author_Institution :
Jiangsu Key Lab. on Opto-Electron. Technol., Nanjing Normal Univ., Nanjing, China
Abstract :
A means of obtaining independent multiplexing self-mixing interference (SMI) in fiber ring lasers (FRLs) for measurement or sensing is presented. A demultiplex/multiplex arrayed waveguide grating (AWG) is adopted for multiplexing. The expression of output powers without and with optical feedback in FRL is analyzed. The gain competition and the intensity alternation among different channels are discussed when optical feedback is introduced. The experimental results show that the SMI signal in one channel has little influence on other channels. Therefore, multichannel sensing or measurement will be realized at the same time without disturbance.
Keywords :
arrayed waveguide gratings; demultiplexing; fibre lasers; laser feedback; light interference; optical communication equipment; ring lasers; wavelength division multiplexing; demultiplex arrayed waveguide grating; fiber ring lasers; gain competition; independent multiplexing self-mixing interference; intensity alternation; multichannel sensing; multiplex arrayed waveguide grating; multiplexing self-mixing interference; optical feedback; wavelength-division multiplexer; Couplers; Interference; Multiplexing; Optical feedback; Optical fiber amplifiers; Optical fiber networks; Optical fiber sensors; Arrayed waveguide grating (AWG); fiber optics; fiber ring laser (FRL); multiplexing; self-mixing interference (SMI);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2070491
