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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 34, Iss. 33 — Nov. 20, 1995
  • pp: 7724–7730

Required energy for a laser radar system incorporating a fiber amplifier or an avalanche photodiode

Jay A. Overbeck, Michael S. Salisbury, Martin B. Mark, and Edward A. Watson  »View Author Affiliations


Applied Optics, Vol. 34, Issue 33, pp. 7724-7730 (1995)
http://dx.doi.org/10.1364/AO.34.007724


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Abstract

The transmitted energy required for an airborne laser radar system to be able to image a target at 20 km is investigated. Because direct detection is being considered, two methods of enhancing the received signal are discussed: (1) using an avalanche photodiode (APD) as the detector and (2) using a commercial fiber amplifier as a preamplifier before a photodetector. For this analysis a specified signal-to-noise ratio was used in conjunction with the radar range equation, which includes the effects of atmospheric transmission and turbulence. Theoretical analysis reveals that a system with a fiber amplifier performs nearly the same as a system incorporating an APD.

© 1995 Optical Society of America

History
Original Manuscript: February 24, 1995
Revised Manuscript: June 22, 1995
Published: November 20, 1995

Citation
Jay A. Overbeck, Michael S. Salisbury, Martin B. Mark, and Edward A. Watson, "Required energy for a laser radar system incorporating a fiber amplifier or an avalanche photodiode," Appl. Opt. 34, 7724-7730 (1995)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-34-33-7724


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References

  1. A. V. Jelalian, Laser Radar Systems (Artech, Boston, 1992), pp. 3–19.
  2. A. Yariv, Optical Electronics (Holt, Rinehart & Winston, New York, 1985), pp. 315, 317, 375, 379.
  3. B. E. Saleh, M. C. Teich, Fundamentals of Photonics (Wiley, New York, 1991), pp. 673–681.
  4. J. E. Pederson, M. C. Brierley, R. A. Lobbett, “Noise characterization of a neodymium-doped fluoride fiber amplifier and its performance in a 2.4 Gb/s system,” IEEE Photon. Technol. Lett. 2, 750–752 (1990). [CrossRef]
  5. M. S. Salisbury, “Sensitivity and signal to noise ratio improvements of a one micron ladar system incorporating a neodymium doped optical fiber preamplifier,” M.S. thesis (University of Dayton, Dayton, Ohio, 1993).
  6. M. S. Salisbury, “Sensitivity improvement of a 1 μm ladar system incorporating an optical fiber preamplifier,” Opt. Eng. 32, 2671–2680 (1993). [CrossRef]
  7. G. Anderson, FASCODE, version, GEO-Physics Directorate Phillips Laboratory (Hanscomb Air Force Base, Mass., 1992).
  8. J. H. Shapiro, B. A. Capron, R. C. Harney, “Imaging and target detection with a heterodyne-reception optical radar,” Appl. Opt. 12, 3292–3313 (1981). [CrossRef]

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