LED-induced distributed Bragg reflection microwave filter with fiber-optically controlled change of center frequency via photoconductivity gratings

Author

Platte, Walter

Author_Institution

Inst. fuer Hochfrequenztech., Erlangen Univ., Germany

Volume

39

Issue

2

fYear

1991

fDate

2/1/1991 12:00:00 AM

Firstpage

359

Lastpage

363

Abstract

A light-induced distributed Bragg reflection band-reject microwave filter is reported in which the grating elements are optoelectronically generated through periodic-structure photoexcitation of a silicon coplanar waveguide. The center for frequency can be optically adjusted to 11 GHz and 22 GHz by means of a pattern-controlled fiber bundle Array fed from six CW-operated 50-mW, 840-nm light emitting diodes (LEDs). Experimental results are in good agreement with theoretical predictions. The principle of operation demonstrated also applies to millimeter-wave integrated circuits

Keywords

fibre optics; light emitting diodes; microwave filters; waveguide components; 11 GHz; 22 GHz; 50 mW; 840 nm; CPW; DBR type; SHF; Si coplanar waveguide; band-reject; centre frequency variation; distributed Bragg reflection; fiber-optically controlled change; light emitting diodes; microwave filter; optoelectronically generated grating elements; pattern-controlled fiber bundle Array; periodic-structure photoexcitation; photoconductivity gratings; Arrayed waveguide gratings; Bragg gratings; Light emitting diodes; Microwave filters; Microwave generation; Optical arrays; Optical fiber filters; Optical reflection; Optical waveguides; Silicon;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.102986

Filename

102986