Title :
Monolithically integrated multiwavelength grating cavity laser
Author :
Kwon, Oh Kee ; Kim, Kang Ho ; Sim, Eun Deok ; Kim, Jong Hoi ; Oh, Kwang Ryong
Author_Institution :
Opt. Devices Dept., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
A multiwavelength grating cavity laser is reported using a novel design for a multichannel light source based on an etched diffraction grating. Following the design, the compact eight-channel device capable of fine-tuning has been realized by monolithically integrating semiconductor optical amplifiers, various passive waveguides, and deeply etched grating, providing high butt-coupling efficiency, and low waveguide losses. As a result, the sidemode suppression ratio in excess of 45 dB over all channels was achieved.
Keywords :
diffraction gratings; etching; laser cavity resonators; laser tuning; optical waveguides; semiconductor laser arrays; semiconductor optical amplifiers; butt coupling; etched diffraction grating; fine-tuning; monolithic integration; multichannel light source; multiwavelength grating cavity laser; passive waveguides; semiconductor optical amplifiers; sidemode suppression ratio; waveguide losses; Diffraction gratings; Etching; Light sources; Optical design; Optical diffraction; Optical waveguides; Semiconductor lasers; Semiconductor optical amplifiers; Semiconductor waveguides; Waveguide lasers; Grating cavity lasers; Rowland grating; monolithic integration; multiwavelength lasers; semiconductor laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.853009
