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Proceedings Paper

Phase modulated radio-over-fiber link with electro-optic downconversion using a delay-line interferometer
Author(s): Thomas E. Murphy; Vincent R. Pagán
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Paper Abstract

We describe and experimentally demonstrate a technique for transmitting microwave signals over an optical fiber and downconverting them to an intermediate frequency at the receiver. The system uses two electrooptic phase modulators, one in the transmitter and the other in the receiver, to optically heterodyne the microwave input signal with a microwave local oscillator. The phase modulated signal is detected at the receiver using an optical delay-line interferometer and a pair of balanced photodectectors. This simple configuration allows downconversion and common-mode noise suppression to be simultaneously realized with relatively high RF-to-IF gain.

Paper Details

Date Published: 21 February 2011
PDF: 6 pages
Proc. SPIE 7936, RF and Millimeter-Wave Photonics, 79360L (21 February 2011); doi: 10.1117/12.875695
Show Author Affiliations
Thomas E. Murphy, Univ. of Maryland, College Park (United States)
Vincent R. Pagán, Lab. for Physical Sciences (United States)

Published in SPIE Proceedings Vol. 7936:
RF and Millimeter-Wave Photonics
Robert L. Nelson; Dennis W. Prather; Christopher A. Schuetz, Editor(s)

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