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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 15 — Aug. 1, 2014
  • pp: 4412–4415

Long-range, high-precision absolute distance measurement based on two optoelectronic oscillators

Ju Wang, Jinlong Yu, Wang Miao, Bin Sun, Shi Jia, Wenrui Wang, and Qiong Wu  »View Author Affiliations

Optics Letters, Vol. 39, Issue 15, pp. 4412-4415 (2014)

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We demonstrate a scheme for long-range, high-precision absolute distance measurement based on frequency detection using two optoelectronic oscillators to convert distance information to frequency information. The two-oscillator design offers the unique advantage of self-referencing. By taking advantage of the accumulative magnification theory, the error of the measured distance is decreased by approximately 105 fold, which significantly improves the precision of the measured distance. In our experiments, the maximum error is ±1.5μm at an emulated distance of approximately 3.35 km, including a drift error of approximately 1 μm in the air path due to the variation of environmental conditions. The highest relative measurement precision achieved in our current system is 4.5×1010.

© 2014 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(150.5670) Machine vision : Range finding
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Machine Vision

Original Manuscript: May 7, 2014
Revised Manuscript: June 12, 2014
Manuscript Accepted: June 18, 2014
Published: July 23, 2014

Ju Wang, Jinlong Yu, Wang Miao, Bin Sun, Shi Jia, Wenrui Wang, and Qiong Wu, "Long-range, high-precision absolute distance measurement based on two optoelectronic oscillators," Opt. Lett. 39, 4412-4415 (2014)

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