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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 14 — May. 10, 2010
  • pp: 2630–2634

Low-splicing-loss polarization-maintaining photonic-crystal-fiber-based Sagnac interferometer and its cladding-mode effect

Bo Dong, Jianzhong Hao, Zhaowen Xu, Chin-Yi Liaw, Yu Song Meng, and Zhaohui Cai  »View Author Affiliations

Applied Optics, Vol. 49, Issue 14, pp. 2630-2634 (2010)

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A low-splicing-loss polarization-maintaining photonic-crystal-fiber (PMPCF)-based optical fiber Sagnac interferometer (OFSI) and its cladding-mode effect are demonstrated experimentally and analytically. An OFSI with minimum splicing loss of about 2.6 dB is achieved. The weak cladding modes induced by residual mode field diameter mismatch at the fusion splice cause a filtering effect on the transmission spectra of the OFSIs. This is especially noticeable for short length PMPCF-based OFSIs. Experimental results show that the relatively maximum ripple fluctuation induced by the cladding mode can reach 5.7%. The cladding-mode effect can be eliminated by slightly bending the PMPCF, but this introduces additional insertion loss.

© 2010 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2340) Fiber optics and optical communications : Fiber optics components

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 25, 2010
Revised Manuscript: April 2, 2010
Manuscript Accepted: April 11, 2010
Published: May 4, 2010

Bo Dong, Jianzhong Hao, Zhaowen Xu, Chin-Yi Liaw, Yu Song Meng, and Zhaohui Cai, "Low-splicing-loss polarization-maintaining photonic-crystal-fiber-based Sagnac interferometer and its cladding-mode effect," Appl. Opt. 49, 2630-2634 (2010)

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