Title :
Feedback effects of mirror loss in /spl lambda//8 phase-shifted DFB-LDs
Author :
Huang, Yi-Pai ; Okuda, Takafumi ; Sato, Kiminori ; Muroya, Yoshiharu ; Kobayashi, Kenichi
Author_Institution :
Kansai Electron. Res. Lab., NEC Corp., Japan
Abstract :
Feedback effects of mirror loss (FEML) in DFB-LDs were demonstrated for the first time. By changing the phase-shift in DFB-LDs, we controlled successfully the lasing wavelength deviation from the Bragg wavelength. The Bragg deviation dependence of the FEML was clarified theoretically and experimentally. The reduced relative intensity noise in /spl lambda//8 phase-shifted DFB-LDs under external optical feedback proved that negative FEML could make the DFB-LDs more stable and insensitive to external fluctuations.
Keywords :
distributed feedback lasers; fluctuations; laser beams; laser cavity resonators; laser feedback; laser mirrors; laser noise; optical losses; optical modulation; semiconductor lasers; /spl lambda//8 phase-shifted DFB-LDs; Bragg deviation dependence; Bragg wavelength; distributed feedback laser diodes; external fluctuations; external optical feedback; feedback effects; lasing wavelength deviation; mirror loss; phase-shift; reduced relative intensity noise; Bragg gratings; Chirp; Fluctuations; Mirrors; Negative feedback; Optical feedback; Optical losses; Phase measurement; Reflectivity; Wavelength measurement;
Conference_Titel :
Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference
Conference_Location :
Beijing, China
Print_ISBN :
7-5635-0402-8
DOI :
10.1109/APCC.1999.820545
