Self-Mixing Interference in Fiber Ring Laser With Parallel Dual-Channel

Author

Zhao, Yi ; Wang, Ming ; Zhou, Junping ; Dai, Xiajuan

Author_Institution

Jiangsu Key Lab. on Opto-Electron. Technol., Nanjing Normal Univ., Nanjing

Volume

21

Issue

13

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

863

Lastpage

865

Abstract

A new approach for self-mixing interference in fiber ring laser with a parallel dual-channel is presented. The output power of the dual-channel with optical feedback is theoretically deduced and simulated based on the transcendental equation of fiber ring laser. The output variation and modes competition between the two channels in a fiber laser is also analyzed. We demonstrate this system to measure the movement of two targets, and discuss the influence on self-mixing interference under the different feedback conditions. The experimental results show a good agreement with the simulation, and indicate that the self-mixing interference with parallel dual-channel is an efficient approach for multiple displacement measurement.

Keywords

fibre lasers; laser feedback; laser modes; light interference; measurement by laser beam; ring lasers; fiber ring laser; laser modes; multiple displacement measurement; optical feedback; parallel dual-channel; self-mixing interference; target movement measurement; transcendental equation; Dual-channel; fiber optics; fiber ring laser; self-mixing interference;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2019624

Filename

4813274