270-360 GHz tunable beat signal light generator for photonic local oscillator

Author

Yamamoto, T. ; Takara, H. ; Kawanishi, S.

Author_Institution

NTT Network Innovation Labs., NTT Corp., Kanagawa, Japan

Volume

38

Issue

15

fYear

2002

fDate

7/18/2002 12:00:00 AM

Firstpage

795

Lastpage

797

Abstract

A new millimetre- and submillimetre-wave generation method is proposed. The method employs three techniques, namely the modulation of CW light by an electroabsorption modulator, pulse spectrum expansion through higher-order soliton compression, and spectrum filtering by using tunable fibre Bragg gratings. With this method, a continuously tunable beat signal from 270 to 360 GHz with no frequency fluctuation was obtained experimentally. In addition, the method requires only one laser source, and generates a beat spectrum with a linewidth of less than 10 Hz. By using optical filters with a sufficiently wide tuning range, it is possible to generate a beat signal at any frequency from 100 GHz to 1 THz

Keywords

Bragg gratings; electro-optical modulation; electroabsorption; microwave photonics; millimetre wave generation; optical fibre filters; optical harmonic generation; optical pulse compression; optical solitons; optical tuning; submillimetre wave generation; 100 GHz to 1 THz; 270 to 360 GHz; CW light modulation; continuously tunable beat signal; electroabsorption modulator; higher-order soliton compression; millimetre-wave generation; optical circulators; optical frequency comb generator; photonic local oscillator; pulse compression; pulse spectrum expansion; spectrum filtering; submillimetre-wave generation; supercontinuum generation; tunable beat signal light generator; tunable fibre Bragg gratings; tunable optical filters;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20020578

Filename

1021848