Reconfigurable optical filter

Author

Mohageg, M. ; Savchenkov, A. ; Strekalov, D. ; Matsko, A. ; Ilchenko, V. ; Maleki, L.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

41

Issue

6

fYear

2005

fDate

3/17/2005 12:00:00 AM

Firstpage

356

Lastpage

358

Abstract

A narrowband, widely tunable optical filter with a reconfigurable spectrum is proposed, and the critical component for the filter operation is demonstrated. The filter is based on a whispering gallery mode resonator made of domain engineered LiNbO₃ crystal. The main feature of the filter is tunability of the spacing between some of the optical modes of the resonator. The spacing is electro-optically manipulated at 7 GHz in the linear regime with approximately 21 MHz/V tuning rate. The filter operates at 1.55 μm wavelength, and is characterised with 10 MHz bandwidth, 5 dB fibre-to-fibre insertion loss and 20 ns tuning speed.

Keywords

lithium compounds; microwave photonics; optical filters; optical materials; optical resonators; optical tuning; whispering gallery modes; 1.55 micron; LiNbO₃; domain engineered crystal; electro-optically manipulated; fibre-to-fibre insertion loss; filter operation; linear regime; optical modes; reconfigurable optical filter; reconfigurable spectrum; tuning rate; tuning speed; whispering gallery mode resonator; widely tunable optical filter;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20058050

Filename

1421197