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Optics Express

Optics Express

  • Editor: C. Martijin de Sterke
  • Vol. 15, Iss. 9 — Apr. 30, 2007
  • pp: 5318–5326

Optical reflectometry based on correlation detection and its application to the in-service monitoring of WDM passive optical network

Y. Takushima and Y. C. Chung  »View Author Affiliations

Optics Express, Vol. 15, Issue 9, pp. 5318-5326 (2007)

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We propose and demonstrate a novel technique for measuring the distribution of the reflectivity along an optical fiber transmission line. Unlike the conventional optical time-domain reflectometer (OTDR), the proposed technique utilizes the data-modulated transmitter itself instead of the optical short-pulse source, and monitors the distribution of the back-reflected light by calculating the cross-correlation of the transmitted and back-reflected signals. In this paper, we describe the operating principle of the proposed technique and discuss its potential limitation on the dynamic range. We also show that this limitation can be mitigated by using the discrete-component elimination algorithm. In addition, we experimentally demonstrate that the proposed technique can be used for the in-service monitoring of the transmission fibers in a wavelength-division multiplexed passive optical network (WDM PON).

© 2007 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(120.1840) Instrumentation, measurement, and metrology : Densitometers, reflectometers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 14, 2007
Revised Manuscript: April 12, 2007
Manuscript Accepted: April 12, 2007
Published: April 16, 2007

Y. Takushima and Y. C. Chung, "Optical reflectometry based on correlation detection and its application to the in-service monitoring of WDM passive optical network," Opt. Express 15, 5318-5326 (2007)

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