Title :
Electronically tunable external-cavity laser diode using a liquid crystal deflector
Author :
Wang, P. ; Seah, L.K. ; Murukeshan, V.M. ; Chao, Z.X.
Author_Institution :
Sch. of Mech. & Aerosp. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A novel external-cavity wavelength tunable laser based on a liquid crystal (LC) deflector is proposed. This device consists of a gain chip, collimating lens, LC deflector, and diffraction grating. By controlling the voltage applied to the LC deflector, a maximum wavelength variation of 12 nm and a sidemode suppression ratio higher than 30 dB are obtained
Keywords :
diffraction gratings; electro-optical deflectors; laser cavity resonators; laser tuning; lenses; liquid crystal devices; optical collimators; optical communication equipment; optical fibre communication; semiconductor lasers; wavelength division multiplexing; collimating lens; diffraction grating; external-cavity laser diode; laser tuning; liquid crystal deflector; sidemode suppression ratio; Diffraction gratings; Diode lasers; Electrooptic deflectors; Electrooptic modulators; Laser tuning; Lenses; Liquid crystals; Semiconductor lasers; Tunable circuits and devices; Wavelength division multiplexing; Dense wavelength-division multiplexing (DWDM); external-cavity laser diode (ECL); semiconductor lasers; tunable lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.879509
