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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 20 — Oct. 3, 2005
  • pp: 8256–8262

High-resolution differential mode delay measurement for a multimode optical fiber using a modified optical frequency domain reflectometer

T.-J. Ahn and D.Y. Kim  »View Author Affiliations

Optics Express, Vol. 13, Issue 20, pp. 8256-8262 (2005)

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A novel differential mode delay (DMD) measurement technique for a multimode optical fiber based on optical frequency domain reflectometry (OFDR) has been proposed. We have obtained a high-resolution DMD value of 0.054 ps/m for a commercial multimode optical fiber with length of 50 m by using a modified OFDR in a Mach-Zehnder interferometer structure with a tunable external cavity laser and a Mach-Zehnder interferometer instead of Michelson interferometer. We have also compared the OFDR measurement results with those obtained using a traditional time-domain measurement method. DMD resolution with our proposed OFDR technique is more than an order of magnitude better than a result obtainable with a conventional time-domain method.

© 2005 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Research Papers

Original Manuscript: June 22, 2005
Revised Manuscript: September 21, 2005
Published: October 3, 2005

T.-J. Ahn and D. Kim, "High-resolution differential mode delay measurement for a multimode optical fiber using a modified optical frequency domain reflectometer," Opt. Express 13, 8256-8262 (2005)

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