Title :
Tunable Laser Integrated With Lateral-Grating-Assisted Lateral Codirectional Coupler Filter
Author :
Suzuki, T. ; Arimoto, H. ; Kitatani, T. ; Takei, A. ; Taniguchi, T. ; Shinoda, K. ; Igarashi, J. ; Nakamura, A. ; Naoe, K. ; Okayasu, M. ; Tanaka, S. ; Tsuji, S.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
A tunable laser monolithically integrated with an optical waveguide tunable filter, named a “lateral-grating-assisted lateral codirectional coupler” (LGLC) filter, was fabricated and demonstrated. The LGLC filter has medium wavelength selectivity characteristics and operates over a 100-nm-wide wavelength range at 60-mA injection current. A tunable laser was also fabricated and its wavelength characteristic of sidemode suppression ration (SMSR) of over 35 dB at C-band wavelength range was demonstrated.
Keywords :
diffraction gratings; integrated optics; laser tuning; optical directional couplers; optical fabrication; optical filters; optical waveguides; C-band wavelength; injection current; lateral-grating-assisted lateral codirectional coupler filter; monolithically integrated tunable laser; optical waveguide tunable filter; sidemode suppression ration; wavelength 100 nm; wavelength selectivity; Distributed Bragg reflectors; Gratings; Laser modes; Laser tuning; Optical filters; Waveguide lasers; Laser tuning; optical filter; semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2161463
