Title :
Highly external optical feedback tolerant 1.49 μm single-mode lasers with partially corrugated gratings
Author :
Gotoda, Mitsunobu ; Nishimura, Tetsuya ; Matsumoto, Keisuke ; Aoyagi, Toshitaka ; Yoshiara, Kiichi
Author_Institution :
Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki
Abstract :
A 1490 nm InGaAsP single-mode laser diode, with high endurance against external optical feedback, was realized utilizing an optimized partially corrugated grating and a window-mirror-structure. The gratingpsilas length and the coupling coefficient were designed to enable moderate output power, low feedback sensitivity and a SMSR of 40 dB simultaneously. The relative intensity noise (RIN) was maintained less than -120 dB/Hz under strong external optical feedback as high as -10 dB.
Keywords :
III-V semiconductors; diffraction gratings; gallium arsenide; gallium compounds; indium compounds; laser cavity resonators; laser feedback; laser mirrors; laser modes; laser noise; semiconductor lasers; InGaAsP; coupling coefficient; external optical feedback; partially corrugated gratings; relative intensity noise; single-mode laser diode; wavelength 1490 nm; window-mirror structure; Coatings; Diode lasers; Distributed feedback devices; Fiber lasers; Gratings; Isolators; Laser feedback; Laser noise; Optical coupling; Optical feedback;
Conference_Titel :
Semiconductor Laser Conference, 2008. ISLC 2008. IEEE 21st International
Conference_Location :
Sorrento
Print_ISBN :
978-1-4244-1782-7
Electronic_ISBN :
978-1-4244-1783-4
DOI :
10.1109/ISLC.2008.4635989
