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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 15, Iss. 3 — Mar. 1, 1998
  • pp: 736–747

Coupling efficiencies for general-target-illumination ladar systems incorporating single-mode optical fiber receivers

Christopher D. Brewer, Bradley D. Duncan, Kenneth J. Barnard, and Edward A. Watson  »View Author Affiliations


JOSA A, Vol. 15, Issue 3, pp. 736-747 (1998)
http://dx.doi.org/10.1364/JOSAA.15.000736


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Abstract

A rigorous method for modeling received power coupling efficiency (ηF/R) and transmitted power coupling efficiency (ηF/T) in a general-target-illumination ladar system is presented. For our analysis we concentrate on incorporating a single-mode optical fiber into the ladar return signal path. By developing expressions for both ηF/R and ηF/T for a simple, diffuse target, our model allows for varying range, beam size on target, target diameter, and coupling optics. Through numerical analysis ηF/R is shown to increase as the range to target increases and decrease as target diameter increases, and ηF/T is shown to decrease with target range. A baseline signal-to-noise ratio analysis of the system is also provided for varying illumination schemes.

© 1998 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(280.3640) Remote sensing and sensors : Lidar

Citation
Christopher D. Brewer, Bradley D. Duncan, Kenneth J. Barnard, and Edward A. Watson, "Coupling efficiencies for general-target-illumination ladar systems incorporating single-mode optical fiber receivers," J. Opt. Soc. Am. A 15, 736-747 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-3-736

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