Self-compensated dispersion tuning of a mode-locked fiber laser using a linearly chirped fiber grating

Author

Lee, K.L. ; Chan, K. ; Shu, C.

Author_Institution

Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong

Volume

13

Issue

2

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

106

Lastpage

108

Abstract

A new approach of self-compensated dispersion tuning is developed to generate wavelength-tunable pulses from a fiber laser. A linearly chirped fiber grating is used in conjunction with a pair of optical circulators and modulators in the cavity. The wavelength has been electrically tuned while maintaining a constant operating frequency of 1 GHz. The laser exhibits a linear tuning relation with respect to the delay time between the electrical control signals. Three chirped gratings providing dispersions of 1446, 50, and 10 ps/nm are used respectively in the experiment and the results are compared. The highest tuning range is about 1 nm and is limited by the chirped bandwidth of the gratings.

Keywords

chirp modulation; diffraction gratings; fibre lasers; laser beams; laser cavity resonators; laser mode locking; laser tuning; optical circulators; optical modulation; optical pulse generation; 1 GHz; cavity; chirped bandwidth; chirped gratings; delay time; dispersions; electrical control signals; electrically tuned wavelength; fiber laser; gratings; linear tuning relation; linearly chirped fiber grating; mode-locked fiber laser; operating frequency; optical circulators; optical modulators; self-compensated dispersion tuning; tuning range; wavelength; wavelength-tunable pulses; Chirp; Circulators; Distributed power generation; Fiber gratings; Fiber lasers; Laser mode locking; Laser tuning; Optical modulation; Optical pulse generation; Optical tuning;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.910503

Filename

910503