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Applied Optics

Applied Optics


  • Vol. 34, Iss. 4 — Feb. 1, 1995
  • pp: 716–720

High-performance lensless in-line filters

Yimin Wang, Takashi Sato, Junichiro Minowa, and Haruki Kataoka  »View Author Affiliations

Applied Optics, Vol. 34, Issue 4, pp. 716-720 (1995)

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Lensless in-line bandpass filters with low insertion losses and high backreflection losses are achieved with expanded-core fibers. It has been experimentally shown that using a large modal-field diameter of expanded-core fibers can resolve the problem of the trade-off between the insertion loss and backreflection. The reduction in the outer diameter, usually occurring when the modal-field diameter is enlarged to an extent, was suppressed at an optimized heating condition.

© 1995 Optical Society of America

Original Manuscript: November 8, 1993
Revised Manuscript: June 3, 1994
Published: February 1, 1995

Yimin Wang, Takashi Sato, Junichiro Minowa, and Haruki Kataoka, "High-performance lensless in-line filters," Appl. Opt. 34, 716-720 (1995)

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