Stable and Widely Tunable Single-Longitudinal-Mode Dual-Wavelength Erbium-Doped Fiber Laser for Optical Beat Frequency Generation

Author

Kim, Ryun Kyung ; Chu, Suho ; Han, Young-Geun

Author_Institution

Dept. of Phys., Hanyang Univ., Seoul, South Korea

Volume

24

Issue

6

fYear

2012

fDate

3/15/2012 12:00:00 AM

Firstpage

521

Lastpage

523

Abstract

A stably and widely tunable single-longitudinal-mode dual-wavelength erbium-doped fiber (EDF) laser is investigated for the generation of a tunable optical beat frequency. The lasing wavelength spacing is widely controlled in a range from 3.46 to 13.2 nm, which means that the tunable optical beat frequency in a range from 0.43 to 1.66 THz can be achieved. Nonlinear polarization rotation effect is implemented to stabilize and equalize outputs of the tunable dual-wavelength EDF laser. Since the dual-wavelength fiber laser has a single-longitudinal mode, the proposed dual-wavelength fiber laser is stable.

Keywords

erbium; fibre lasers; light polarisation; optical harmonic generation; optical tuning; dual-wavelength fiber laser; frequency 0.43 THz to 1.66 THz; lasing wavelength spacing; nonlinear polarization rotation effect; optical beat frequency generation; single-longitudinal mode; single-longitudinal-mode dual-wavelength erbium-doped fiber laser; tunable dual-wavelength EDF laser; tunable optical beat frequency; wavelength 3.46 nm to 13.2 nm; Erbium-doped fiber lasers; Laser modes; Laser stability; Laser tuning; Optical fibers; Dual-wavelength fiber laser; erbium-doped fiber (EDF) laser; nonlinear polarization rotation; optical beat frequency;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2182763

Filename

6122490