Phase diffuser at the transmitter for lasercom link: effect of partially coherent beam on the bit-error rate

Olga Korotkova; Larry C. Andrews; Ronald L. Phillips

doi:10.1117/12.473178

30 April 2003 Phase diffuser at the transmitter for lasercom link: effect of partially coherent beam on the bit-error rate

Olga Korotkova, Larry C. Andrews, Ronald L. Phillips

Author Affiliations +

Proceedings Volume 4976, Atmospheric Propagation; (2003) https://doi.org/10.1117/12.473178
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

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 is shown under all atmospheric conditions. The signal to noise ratio and the bit error rates are discussed.

Citation Download Citation

Olga Korotkova, Larry C. Andrews, and Ronald L. Phillips "Phase diffuser at the transmitter for lasercom link: effect of partially coherent beam on the bit-error rate", Proc. SPIE 4976, Atmospheric Propagation, (30 April 2003); https://doi.org/10.1117/12.473178

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