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Applied Optics

Applied Optics


  • Vol. 38, Iss. 9 — Mar. 20, 1999
  • pp: 1686–1691

Passive single-mode fiber depolarizer

Paisheng Shen and Joseph C. Palais  »View Author Affiliations

Applied Optics, Vol. 38, Issue 9, pp. 1686-1691 (1999)

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We analyze and demonstrate a passive single-mode fiber depolarizer by using cascaded 2 × 2 couplers, recirculating delay lines, and a commercial laser diode. Design criteria and principles are discussed. We reduced the degree of polarization (DOP) to less than 20 dB by using ten cascaded couplers. The DOP can be reduced even further with more couplers. Experiments illustrate that this depolarizer is insensitive to the input polarization state and can eliminate polarization noise in a polarization-sensitive fiber-optic system.

© 1999 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.5440) Optical devices : Polarization-selective devices

Original Manuscript: July 6, 1998
Revised Manuscript: December 7, 1998
Published: March 20, 1999

Paisheng Shen and Joseph C. Palais, "Passive single-mode fiber depolarizer," Appl. Opt. 38, 1686-1691 (1999)

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