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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 21 — Jul. 20, 2000
  • pp: 3716–3726

All-fiber multifunction continuous-wave coherent laser radar at 1.55 µm for range, speed, vibration, and wind measurements

Christer J. Karlsson, Fredrik Å. A. Olsson, Dietmar Letalick, and Michael Harris  »View Author Affiliations


Applied Optics, Vol. 39, Issue 21, pp. 3716-3726 (2000)
http://dx.doi.org/10.1364/AO.39.003716


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Abstract

The design and performance of a simple, multifunction 1.55-µm continuous-wave (cw) and frequency-modulated cw coherent laser radar system with an output power of 1 W is presented. The system is based on a semiconductor laser source plus an erbium-doped fiber amplifier, a polarization-independent fiber-optic circulator used as the transmit–receive switch, and digital signal processing. The system is shown to be able to perform wind-speed measurements even in clear atmospheric conditions when the visibility exceeds 40 km. The aerosol measurements indicate the potential to use single-particle detection for wind measurements with enhanced sensitivity. The system can perform range and line-of-sight velocity measurements of hard targets at ranges of the order of several kilometers with a range accuracy of a few meters and a velocity accuracy of 0.1 m/s by use of triangular-wave frequency modulation with compensation of the frequency-modulation response of the semiconductor laser. The system also demonstrates a capability for vibration sensing.

© 2000 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.3400) Remote sensing and sensors : Laser range finder

History
Original Manuscript: December 23, 1999
Revised Manuscript: May 3, 2000
Published: July 20, 2000

Citation
Christer J. Karlsson, Fredrik Å. A. Olsson, Dietmar Letalick, and Michael Harris, "All-fiber multifunction continuous-wave coherent laser radar at 1.55 µm for range, speed, vibration, and wind measurements," Appl. Opt. 39, 3716-3726 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-21-3716

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