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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 21 — Nov. 1, 2008
  • pp: 2565–2567

Compact optical short-pass filters based on microfibers

Yuan Chen, Zhe Ma, Qing Yang, and Li-Min Tong  »View Author Affiliations

Optics Letters, Vol. 33, Issue 21, pp. 2565-2567 (2008)

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We demonstrate a compact short-pass filter fabricated by integrating a microfiber ( 1 μ m in diameter) with a low-index substrate. By varying the interaction length (from 0.65   to 3 mm ) between the microfiber and the substrate for wavelength-dependent evanescent leakage, the cutoff wavelength has been tuned over a wide range of 400 nm . Typical rejection loss is higher than 40 dB with insertion loss as low as 0.3 dB . The fiber-diameter-dependent cutoff is also investigated, suggesting that the filter can be applied over a wide spectral range from 600 to 1500 nm . The microfiber-based short-pass filters demonstrated show advantages of compact size, wideband applicability, simple structure, high rejection loss, and compatibility with miniaturized fiber devices.

© 2008 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: August 13, 2008
Revised Manuscript: September 19, 2008
Manuscript Accepted: September 22, 2008
Published: October 31, 2008

Yuan Chen, Zhe Ma, Qing Yang, and Li-Min Tong, "Compact optical short-pass filters based on microfibers," Opt. Lett. 33, 2565-2567 (2008)

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