Title

Phase Diffuser At The Transmitter For Lasercom Link: Effect Of Partially Coherent Beam On The Bit-Error Rate

Abstract

By using a complex phase screen model for a diffuser located at the transmitter, analytic expressions are developed for the scintillation index of a lowest order Gaussian-beam wave in the pupil plane of the receiver in weak and strong atmospheric conditions. The effect of partial coherence on the scintillation index is analyzed as a function of the propagation distance and the correlation length of the diffuser. The reduction in the scintillation level (due to the transmitter aperture averaging effect) is shown under all atmospheric conditions. The signal to noise ratio and the bit error rates (for OOK signal modulation) are discussed.

Publication Date

8-8-2003

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

4976

Number of Pages

70-77

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.473178

Socpus ID

0042168672 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0042168672

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