Single Polarization, Dual Wavelength Fiber Laser Based on a 3-Stage All Fiber Lyot Filter

Author

Zhijun Yan ; Chengbo Mou ; Zuxing Zhang ; Xiangchuan Wang ; Jianfeng Li ; Kaimin Zhou ; Lin Zhang

Author_Institution

Sch. of Eng. & Appl. Sci., Aston Univ., Birmingham, UK

Volume

26

Issue

11

fYear

2014

fDate

1-Jun-14

Firstpage

1085

Lastpage

1088

Abstract

We have demonstrated a switchable dual wavelength fiber ring laser with a high degree of polarization output by using an intracavity 3-stage all fiber Lyot filter. The filter is formed by concatenating four 45° tilted fiber gratings separated by polarization maintaining fibers with a length ratio of 1:2:4 (20, 40, and 80 cm), giving a compact integrated configuration with reduced bandwidth. Switchable dual wavelength or single wavelength output at 1533.5 and 1563.3 nm has been achieved. The output lasing is considerably stable owing to the in-phase mode-selecting function of the multistage Lyot filter, and has a very high degree of polarization higher than 99.9%.

Keywords

diffraction gratings; fibre lasers; integrated optics; laser cavity resonators; laser modes; laser stability; optical fibre filters; optical fibre polarisation; ring lasers; compact integrated configuration; in-phase mode-selecting function; intracavity 3-stage all fiber Lyot filter; length ratio; multistage Lyot filter; output lasing; polarization maintaining fibers; polarization output; single polarization dual wavelength fiber laser; single wavelength output; size 20 cm; size 40 cm; size 80 cm; switchable dual wavelength fiber ring laser; tilted fiber gratings; wavelength 1533.5 nm; wavelength 1563.3 nm; Cavity resonators; Erbium-doped fiber lasers; Optical fiber amplifiers; Optical fiber communication; Optical fiber filters; Optical fiber polarization; Lyot-filter; fiber ring laser; tilted fiber grating;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2314865

Filename

6782437