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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 9 — May. 1, 1980
  • pp: 1489–1492

Spatial technique for measuring modal delay differences in a dual-mode optical fiber

Nori Shibata, Mitsuhiro Tateda, Shigeyuki Seikai, and Naoya Uchida  »View Author Affiliations


Applied Optics, Vol. 19, Issue 9, pp. 1489-1492 (1980)
http://dx.doi.org/10.1364/AO.19.001489


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Abstract

A simple spatial method using a coherent light source and an interferometer is proposed for measuring the group delay time difference between the LP01 and LP11 modes in a dual-mode optical fiber. Experimental results obtained by this method are in good agreement with those obtained by the swept-frequency and pulse methods. Moreover, a group delay time difference of 4 psec is measured. Results suggest that this spatial method can be applied to a short fiber less than 1 m in length and/or small time differences around 1 psec by using a laser diode with a short coherence length.

© 1980 Optical Society of America

History
Original Manuscript: July 18, 1979
Published: May 1, 1980

Citation
Nori Shibata, Mitsuhiro Tateda, Shigeyuki Seikai, and Naoya Uchida, "Spatial technique for measuring modal delay differences in a dual-mode optical fiber," Appl. Opt. 19, 1489-1492 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-9-1489

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