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Proceedings Paper

Suppressed carrier techniques for multi-octave high dynamic range microwave photonic links
Author(s): Charles Middleton; Richard DeSalvo
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Paper Abstract

Optical transmission of microwave signals offers many advantages such as increased bandwidth, immunity to electromagnetic interference, reduction of size and weight, and minimal loss over long distances. But microwave photonic links often lack the sufficiently high dynamic range and large instantaneous bandwidth required in many applications. Optical carrier suppression has been used to increase link dynamic range, but second harmonic distortion terms limit the operational bandwidth to sub-octave applications. We present a method to apply carrier suppression to microwave photonic links while maintaining multi-octave operation. Our technique uses double sideband suppressed carrier modulation together with coherent heterodyne balanced detection to increase dynamic range, eliminate bandwidth-limiting second-order distortion terms, and reduce link noise figure. This approach provides efficient amplification of the modulated signal while limiting the effect of shot noise from the source laser and reducing common-mode noise terms such as source laser RIN and amplifier-related beat noise.

Paper Details

Date Published: 4 August 2009
PDF: 10 pages
Proc. SPIE 7386, Photonics North 2009, 738626 (4 August 2009); doi: 10.1117/12.839697
Show Author Affiliations
Charles Middleton, Harris Corp. (United States)
Richard DeSalvo, Harris Corp. (United States)

Published in SPIE Proceedings Vol. 7386:
Photonics North 2009
Réal Vallée, Editor(s)

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