Optical frequency sweeper using an optical ring circuit with a tunable injection-locking filter

Author

Ishikawa, M. ; Yasaka, H. ; Kano, F. ; Yoshikuni, Y.

Author_Institution

NTT Photonics Lab., Atsugi, Japan

Volume

11

Issue

12

fYear

1999

Firstpage

1668

Lastpage

1670

Abstract

We report an optical-frequency sweeper based on an optical ring circuit containing an optical-frequency shifter and a delay-line fiber. High signal-to-noise ratio (30 dB) is achieved by introducing a tunable injection-locking filter (TILF), The TILF utilizes a tunable laser (distributed Bragg reflector (DBR) laser), which is injection locked to an input signal light. We have achieved a total sweep frequency of 141 GHz by switching the longitudinal modes of the DBR laser.

Keywords

distributed Bragg reflector lasers; laser modes; laser tuning; optical delay lines; optical filters; optical frequency conversion; optical noise; ring lasers; wavelength division multiplexing; 144 GHz; DBR laser; delay-line fiber; high signal-to-noise ratio; injection locked; input signal light; longitudinal modes; optical frequency sweeper; optical ring circuit; total sweep frequency; tunable injection-locking filter; tunable laser; Delay; Distributed Bragg reflectors; Fiber lasers; Frequency; Laser mode locking; Optical fiber filters; Optical filters; Ring lasers; Signal to noise ratio; Tunable circuits and devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.806882

Filename

806882