Title

Enhanced Correlation of Received Power-Signal Fluctuations in Bidirectional Optical Links

Document Type

Article

Publication Date

1-10-2013

Publication Source

Journal of Optics

Abstract

A study of the correlation between the power signals received at both ends of bidirectional free-space optical links is presented. By use of the quasi-optical approximation, we show that an ideal (theoretically 100%) power-signal correlation can be achieved in optical links with specially designed monostatic transceivers based on single-mode fiber collimators. The theoretical prediction of enhanced correlation is supported both by experiments conducted over a 7 km atmospheric path and wave optics numerical analysis of the corresponding bidirectional optical link. In the numerical simulations, we also compare correlation properties of received power signals for different atmospheric conditions and for optical links with monostatic and bistatic geometries based on single-mode fiber collimator and on power-in-the-bucket transceiver types. Applications of the observed phenomena for signal fading mitigation and turbulence-enhanced communication link security in free-space laser communication links are discussed.

ISBN/ISSN

2040-8978

Comments

Permission documentation on file.

Publisher

IOP Publishing

Volume

15

Issue

2

Peer Reviewed

yes

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