A computer controlled narrow bandpass optical tunable filter using a Fourier diffraction grating in the range of 1.3-1.55 μm

Author

Iida, Masanori ; Asakura, Hiroyuki

Author_Institution

Mater. & Devices Lab., Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

13

Issue

12

fYear

1995

fDate

12/1/1995 12:00:00 AM

Firstpage

2343

Lastpage

2348

Abstract

A novel tunable filter using a Fourier grating is studied and discussed. It consists of a Fourier grating, a collimator lens, single-mode fibers, and a computer controlled rotary actuator. It has very low polarization dependence of less than 0.3 dB, an insertion loss of less than 3 dB, and a narrow bandwidth of 1.5 nm. Wavelength selection was realized by rotating the grating, which was controlled by a computer. The device is able to select the light at the desired wavelength from more than 100 WDM optical data streams with 2 nm spacing in the range of 1.3-1.55 μm

Keywords

diffraction gratings; light polarisation; multiplexing equipment; optical communication equipment; optical filters; optical losses; tuning; wavelength division multiplexing; 1.3 to 1.55 mum; 3 dB; Fourier diffraction grating; Fourier grating; WDM optical data streams; collimator lens; computer controlled narrow bandpass optical tunable filter; computer controlled rotary actuator; grating rotation; insertion loss; low polarization dependence; narrow bandwidth; single-mode fibers; wavelength selection; Band pass filters; Fiber gratings; Lenses; Optical collimators; Optical computing; Optical control; Optical fiber devices; Optical fiber filters; Optical fiber polarization; Optical filters;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.475573

Filename

475573