Fast and stable frequency switching employing a delayed self-duplex (DSD) light source

Author

Ishida, Osamu ; Tada, Yasuhiko ; Shibata, Nori ; Ishii, Hiroyuki

Author_Institution

NTT Transmission Syst. Labs., Yokosuka, Japan

Volume

6

Issue

1

fYear

1994

Firstpage

13

Lastpage

16

Abstract

A novel frequency-agile light source, the delayed self-duplex (DSD) light source, is constructed using a tunable DBR laser and an optical switch. The DSD light source overcomes the tuning speed limitation of the tunable laser, and also offers suppressed frequency drift due to the thermal effect by employing periodic laser tuning. For 160-GHz-spaced frequency switching, the 4-ns switching time and 2.2-GHz thermal frequency drift inherent to the DBR laser are reduced to 0.4 ns and 0.3 GHz, respectively.<>

Keywords

distributed Bragg reflector lasers; electro-optical devices; infrared sources; laser tuning; optical switches; semiconductor lasers; 0.4 ns; 1.55 micron; delayed self-duplex light source; fast frequency switching; frequency-agile light source; optical switch; periodic laser tuning; stable frequency switching; suppressed frequency drift; switching time; thermal effect; thermal frequency drift; tunable DBR laser; tuning speed; Delay; Distributed Bragg reflectors; Fiber lasers; Frequency; Laboratories; Laser tuning; Light sources; Optical switches; Optical tuning; Tunable circuits and devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.265875

Filename

265875