Backscatter-induced crosstalk interference in urban optical wireless communication

Debbie Kedar; Shlomi Arnon

doi:10.1117/12.552619

20 October 2004 Backscatter-induced crosstalk interference in urban optical wireless communication

Debbie Kedar, Shlomi Arnon

Proceedings Volume 5550, Free-Space Laser Communications IV; (2004) https://doi.org/10.1117/12.552619
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

In this paper we summarize work done on the crosstalk effect of aerosol backscatter on the performance of an urban optical wireless communication (UOWC) system. The communication link is a segment within a metropolitan area network (MAN), where a WDM transmitter and receiver are housed in one transceiver unit with parallel, or near-parallel, optic axes. The crosstalk at the receiver is caused by light from the transmitted signal of the same transceiver, which has been backscattered by molecules and aerosols in the atmosphere. This is exacerbated in the presence of fog and haze, when both the desired signal from another transceiver is attenuated by scattering and the backscatter-induced crosstalk increases. In our research we derive a bit error rate (BER) model which takes into consideration the dominant noise sources, which include the backscatter-induced crosstalk and the signal mixing with amplified stimulated emission (ASE) from an optical pre-amplifier at the receiver. Our numerical calculations indicate that in a moderate fog the BER may increase by an order of magnitude, due to backscatter.

Citation Download Citation

Debbie Kedar and Shlomi Arnon "Backscatter-induced crosstalk interference in urban optical wireless communication", Proc. SPIE 5550, Free-Space Laser Communications IV, (20 October 2004); https://doi.org/10.1117/12.552619

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KEYWORDS

Backscatter

Receivers

Transceivers

Interference (communication)

Transmitters

Fiber optic gyroscopes

Wireless communications

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