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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 32 — Nov. 10, 2006
  • pp: 8238–8243

Frequency-domain intermodal interferometer for the bandwidth measurement of a multimode fiber

Tae-Jung Ahn, Sucbei Moon, Soan Kim, Kyunghwan Oh, Dug Young Kim, Jens Kobelke, Kay Schuster, and Johnnes Kirchhof  »View Author Affiliations


Applied Optics, Vol. 45, Issue 32, pp. 8238-8243 (2006)
http://dx.doi.org/10.1364/AO.45.008238


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Abstract

A new bandwidth measurement technique for a multimode optical fiber (MMF) using a frequency-domain intermodal interferometer is proposed. We have demonstrated that the relative modal delay (RMD) of a MMF can be obtained easily and accurately based on an optical frequency-domain reflectometry (OFDR) technique by using an intermodal interference signal among the excited modes of a MMF. As an example, a photonic crystal fiber with a few modes is prepared and its RMD is measured by using our proposed measurement technique. Measurement results are compared with those from a previously reported frequency-domain method. We have also measured the RMD of a commercial MMF as a practical application and compared our result with the one obtained from a well-known time-domain differential mode delay measurement technique.

© 2006 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Interferometry

History
Original Manuscript: December 20, 2005
Revised Manuscript: March 31, 2006
Manuscript Accepted: April 14, 2006

Citation
Tae-Jung Ahn, Sucbei Moon, Soan Kim, Kyunghwan Oh, Dug Young Kim, Jens Kobelke, Kay Schuster, and Johnnes Kirchhof, "Frequency-domain intermodal interferometer for the bandwidth measurement of a multimode fiber," Appl. Opt. 45, 8238-8243 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-32-8238

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