Title :
A widely tunable SOA-integrated DBR laser by combination of sampled and superstructure gratings
Author :
Gotoda, Mitsunobu ; Nishimura, Tetsuya ; Tokuda, Yasunori
Author_Institution :
Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Hyogo, Japan
fDate :
7/1/2005 12:00:00 AM
Abstract :
We report on the development of the first 30 nm tunable laser diode utilizing a front sampled grating-distributed Bragg reflector (SG-DBR) and a rear superstructure grating DBR (SSG-DBR). A high output power greater than 18 mW was achieved with superior longitudinal mode stability, as well as an overall power variation of less than 3 dB for the well-defined laser. Furthermore, lasers integrated with a semiconductor optical amplifier (SOA) enabled the output power to be controlled independently both by the active current and the SOA current, as well as achieving a maximum output power of 45 mW. The side-mode suppression ratio was in excess of 40 dB for all the 50 GHz spaced wavelength channels.
Keywords :
channel spacing; diffraction gratings; distributed Bragg reflector lasers; integrated optoelectronics; laser modes; laser stability; laser tuning; optical communication equipment; semiconductor optical amplifiers; 45 mW; DBR laser; SOA integration; channel spacing; laser tuning; longitudinal mode stability; sampled grating-distributed Bragg reflector; semiconductor optical amplifier; side-mode suppression ratio; superstructure grating DBR; Bragg gratings; Distributed Bragg reflectors; Laser modes; Laser stability; Power amplifiers; Power generation; Power lasers; Semiconductor lasers; Semiconductor optical amplifiers; Tunable circuits and devices; Distributed Bragg reflector lasers; integrated optoelectronics; optical communications; tunable lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.850039
