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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 16750–16755

All-fiber bandwidth-tunable band-rejection filter based on a composite grating induced by CO2 laser pulses

T. Zhu, C. H. Shi, Y. J. Rao, L. L. Shi, and K. S. Chiang  »View Author Affiliations

Optics Express, Vol. 17, Issue 19, pp. 16750-16755 (2009)

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We propose an all-fiber band-rejection filter with a tunable bandwidth, which is realized by putting a normal long-period fiber grating in series with a rotary long-period fiber grating written in a twisted single-mode fiber by CO2 laser pulses. Bandwidth tuning is achieved by applying torsion to the composite grating. Our experimental filter shows a bandwidth tuning of ~16.3 nm at a rejection level of ~15 dB and a polarization-dependent loss lower than ~0.9 dB.

© 2009 OSA

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: July 21, 2009
Revised Manuscript: August 28, 2009
Manuscript Accepted: September 2, 2009
Published: September 4, 2009

T. Zhu, C. H. Shi, Y. J. Rao, L. L. Shi, and K. S. Chiang, "All-fiber bandwidth-tunable band-rejection filter based on a composite grating induced by CO2 laser pulses," Opt. Express 17, 16750-16755 (2009)

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