Design features and realisation of a new form of microwave power detector using optical fibres

Author

Auchterlonie, L.J. ; Harris, A.J. ; Lundal, J. ; Herbert, M. ; Sacco, M.

Author_Institution

University of Newcastle upon Tyne, Department of Electrical & Electronic Engineering, Newcastle upon Tyne, UK

Volume

134

Issue

6

fYear

1987

fDate

12/1/1987 12:00:00 AM

Firstpage

351

Lastpage

359

Abstract

Measurements are made of the interactions between microwaves and optical fibres. In particular, measurements have been made of the standing wave ratio and admittances which occur when fibres are located in waveguides. Techniques using open resonators have allowed measurement of the extinction widths of fibres when placed in a microwave field. The types of fibres tested are multimode, single-mode and fibres having a conducting secondary coating. These results are applied to the design and evaluation of a microwave power detector in waveguide, in which single-mode optical fibres (with a conducting secondary coating) form the essential elements. This device when operated at frequencies around 10 GHz has enabled microwave power levels down to 5 mW to be detected.

Keywords

fibre optic sensors; microwave detectors; power measurement; 10 GHz; 5 mW; admittances; conducting secondary coating; design features; extinction widths; microwave power detector; multimode fibres; open resonators; optical fibres; single-mode fibres; standing wave ratio;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings J

Publisher

iet

ISSN

0267-3932

Type

jour

DOI

10.1049/ip-j.1987.0057

Filename

4644437