Title :
External optical feedback resistant 622-Mb/s modulation of partially corrugated waveguide laser diodes over -40/spl deg/C to +85/spl deg/C
Author :
Shiba, K. ; Okuda, T. ; Huang, Y. ; Yamada, H. ; Torikai, T.
Author_Institution :
Kansai Electron. Res. Lab., NEC Corp., Otsu, Japan
fDate :
6/1/1998 12:00:00 AM
Abstract :
High yields of partially corrugated waveguide laser diodes (PC-LDs) with single longitudinal mode stability as well as high optical reflection resistivity have been theoretically predicted and experimentally demonstrated. The yield of PC-LDs with single longitudinal mode oscillation has been improved to 65% compared with the 40% for conventional distributed-feedback (DFB) LDs. Modulation characteristics were evaluated at 622 Mb/s under external optical feedback in the temperature range of -40/spl deg/C to 85/spl deg/C. Power penalties under optical feedback of -8.5 dB were less than 1.0-dB throughout the temperature range.
Keywords :
distributed feedback lasers; electro-optical modulation; laser feedback; laser modes; laser stability; optical fibre communication; reflectivity; semiconductor lasers; waveguide lasers; -40 to 85 C; 622 Mbit/s; PC-LDs; external optical feedback; external optical feedback resistant Mb/s modulation; high optical reflection resistivity; modulation characteristics; optical fibre networks; optical transmitters; partially corrugated waveguide laser diodes; single longitudinal mode stability; temperature range; Diode lasers; Laser feedback; Optical feedback; Optical reflection; Optical waveguide components; Optical waveguide theory; Optical waveguides; Stability; Temperature distribution; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
