Thermal frequency drift suppression in tunable DFB lasers by plasma induced frequency shift enhancement

Author

Morinaga, Motoyasu ; Funemizu, Masahisa ; Takakuwa, Chie ; Tohyama, Masaki ; Baba, Shinichi ; Suzuki, Nobuo

Author_Institution

Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan

Volume

6

Issue

4

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

493

Lastpage

495

Abstract

The authors propose enhanced-plasma-effect (EPE) lasers for coherent optical frequency division multiplexed networks. In the EPE lasers, the blue frequency shift due to the plasma effect is enhanced by incorporating a very thick p-side optical guide layer as a carrier reservoir for multiple quantum-well distributed feedback laser and it surpasses the red frequency shift due to the thermal effect. The results of demonstrating a frequency step response maintained in the blue shift region and an enhanced blue shift frequency modulation response over the whole modulation frequency range from DC are presented for the first time.<>

Keywords

distributed feedback lasers; laser theory; laser tuning; optical modulation; semiconductor lasers; thermo-optical effects; MQW DFB lasers; blue frequency shift; carrier reservoir; coherent optical frequency division multiplexed networks; enhanced blue shift frequency modulation response; enhanced-plasma-effect; modulation frequency range; multiple quantum-well distributed feedback laser; plasma induced frequency shift enhancement; thermal frequency drift suppression; thick p-side optical guide layer; tunable DFB lasers; Distributed feedback devices; Frequency division multiplexing; Frequency modulation; Laser feedback; Optical feedback; Optical fiber networks; Optical modulation; Plasmas; Reservoirs; Tunable circuits and devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.281805

Filename

281805