An 8-18-GHz all-optical microwave downconverter with channelization

Author

Strutz, Shane J. ; Williams, Keith J.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

49

Issue

10

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

1992

Lastpage

1995

Abstract

A wide-band fiber-optic image-rejection downconverter capable of channelizing received signals into a 500-MHz intermediate frequency band is demonstrated. The downconverter utilizes phase modulators to convert received signals into optical side-bands prior to heterodyne detection with the system local oscillator. Experimental measurements performed on a two-channel system which maps 8-18-GHz signals into intermediate frequencies between 2 and 2.5 GHz reveal an image rejection of 20 dB and a spur-free dynamic range of 107 dB/Hz^2/3

Keywords

heterodyne detection; microwave frequency convertors; microwave photonics; phase modulation; 2 to 2.5 GHz; 500 MHz; 8 to 18 GHz; all-optical microwave downconverter; heterodyne detection; image rejection; intermediate frequency band; local oscillator; phase modulator; signal channelization; spur-free dynamic range; two-channel system; wideband fiber-optic device; Dynamic range; Frequency measurement; Image converters; Local oscillators; Optical mixing; Optical modulation; Performance evaluation; Phase detection; Phase modulation; Wideband;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.954819

Filename

954819