Title :
Liquid crystal mirror-based wavelength-tunable laser module with asynchronous mode cavity
Author :
Mizutani, K. ; De Merlier, J. ; Sudo, S. ; Sato, K. ; Kudo, K.
Author_Institution :
Syst. Devices Res. Labs., NEC Corp., Shiga
fDate :
6/1/2006 12:00:00 AM
Abstract :
We investigated experimentally the impact of the cavity spacing on the lasing mode stability of the external cavity wavelength-tunable laser (ECTL) with Fabry-Peacuterot etalon and liquid-crystal-based wavelength-tunable mirror. In the asynchronous mode cavity ECTL, the etalon assists in the suppression of the cavity modes at the neighboring transmission peaks of the lasing wavelength due to the misalignment to the etalon´s peak. Therefore, the ECTL with asynchronous mode cavity shows highly mode stable lasing operation. The fabricated ECTL module with optimized asynchronous mode cavity shows excellent lasing property of sidemode suppression ratio more than 59 dB and output power of over 14 dBm for a 45-nm tuning range
Keywords :
Fabry-Perot interferometers; laser cavity resonators; laser mirrors; laser modes; laser stability; laser tuning; liquid crystal devices; modules; semiconductor lasers; Fabry-Perot etalon; asynchronous mode cavity; cavity spacing; external cavity wavelength-tunable laser; laser module; laser tuning; lasing mode stability; liquid crystal mirror; sidemode suppression ratio; Laser mode locking; Laser modes; Laser stability; Laser tuning; Liquid crystals; Mirrors; Optical fiber networks; Semiconductor lasers; Semiconductor optical amplifiers; Tunable circuits and devices; External cavity; ITU grid; semiconductor lasers; tunable lasers; wavelength control; wavelength locker;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.876750
