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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3826–3834

Compensation of laser frequency tuning nonlinearity of a long range OFDR using deskew filter

Zhenyang Ding, X. Steve Yao, Tiegen Liu, Yang Du, Kun Liu, Junfeng Jiang, Zhuo Meng, and Hongxin Chen  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 3826-3834 (2013)

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We present a simple and effective method to compensate the optical frequency tuning nonlinearity of a tunable laser source (TLS) in a long range optical frequency-domain reflectometry (OFDR) by using the deskew filter, where a frequency tuning nonlinear phase obtained from an auxiliary interferometer is used to compensate the nonlinearity effect on the beating signals generated from a main OFDR interferometer. The method can be applied to the entire spatial domain of the OFDR signals at once with a high computational efficiency. With our proposed method we experimentally demonstrated a factor of 93 times improvement in spatial resolution by comparing the results of an OFDR system with and without nonlinearity compensation. In particular we achieved a measurement range of 80 km and a spatial resolution of 20 cm and 1.6 m at distances of 10 km and 80 km, respectively with a short signal processing time of less than 1 s for 5 × 106 data points. The improved performance of the OFDR with a high spatial resolution, a long measurement range and a short process time will lead to practical applications in the real-time monitoring, test and measurement of fiber optical communication networks and sensing systems.

© 2013 OSA

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.1840) Instrumentation, measurement, and metrology : Densitometers, reflectometers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 27, 2012
Revised Manuscript: January 22, 2013
Manuscript Accepted: January 23, 2013
Published: February 7, 2013

Zhenyang Ding, X. Steve Yao, Tiegen Liu, Yang Du, Kun Liu, Junfeng Jiang, Zhuo Meng, and Hongxin Chen, "Compensation of laser frequency tuning nonlinearity of a long range OFDR using deskew filter," Opt. Express 21, 3826-3834 (2013)

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