Narrow-band light source with acoustooptic tunable filter for optical low-coherence reflectometry

Author

Takada, Kazumasa ; Yamada, Hiroaki

Author_Institution

NTT Opto-Electron. Labs., Ibaraki, Japan

Volume

8

Issue

5

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

658

Lastpage

660

Abstract

An electrically-tunable narrow-band light source with no moving parts is constructed for jaggedness-free optical low coherence reflectometry. The source incorporates a double-path acoustooptic tunable bandpass filter module whose two passbands automatically agree to within 0.2 nm during wavelength tuning from 1529-1568 nm. The source emits narrow-band light with an FWHM of 1.8/spl plusmn/0.1 nm, a power of >0 dBm and a suppressed background spectrum. The entire wavelength range can be swept electrically within 100 ms by using a variable RF source.

Keywords

acousto-optical filters; band-pass filters; infrared sources; light coherence; reflectometry; tuning; 100 ms; 1529 to 1568 nm; FWHM; acoustooptic tunable filter; double-path acoustooptic tunable bandpass filter module; electrically-tunable light source; jaggedness-free optical reflectometry; narrow-band light; narrow-band light source; optical low-coherence reflectometry; passbands; power; suppressed background spectrum; variable RF source; wavelength range; wavelength tuning; Band pass filters; Coherence; Light sources; Narrowband; Optical filters; Optical tuning; Passband; Radio frequency; Reflectometry; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.491571

Filename

491571