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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 16 — Aug. 15, 2013
  • pp: 3096–3098

All-fiber optical filter with an ultranarrow and rectangular spectral response

Xihua Zou, Ming Li, Wei Pan, Lianshan Yan, José Azaña, and Jianping Yao  »View Author Affiliations

Optics Letters, Vol. 38, Issue 16, pp. 3096-3098 (2013)

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Optical filters with an ultranarrow and rectangular spectral response are highly desired for high-resolution optical/electrical signal processing. An all-fiber optical filter based on a fiber Bragg grating with a large number of phase shifts is designed and fabricated. The measured spectral response shows a 3 dB bandwidth of 650 MHz and a rectangular shape factor of 0.513 at the 25 dB bandwidth. This is the narrowest rectangular bandpass response ever reported for an all-fiber filter, to the best of our knowledge. The filter has also the intrinsic advantages of an all-fiber implementation.

© 2013 Optical Society of America

OCIS Codes
(070.2615) Fourier optics and signal processing : Frequency filtering
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 15, 2013
Revised Manuscript: July 10, 2013
Manuscript Accepted: July 22, 2013
Published: August 13, 2013

Xihua Zou, Ming Li, Wei Pan, Lianshan Yan, José Azaña, and Jianping Yao, "All-fiber optical filter with an ultranarrow and rectangular spectral response," Opt. Lett. 38, 3096-3098 (2013)

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