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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 14 — Jul. 15, 2013
  • pp: 17352–17358

In-line flat-top comb filter based on a cascaded all-solid photonic bandgap fiber intermodal interferometer

Youfu Geng, Xuejin Li, Xiaoling Tan, Yuanlong Deng, and Yongqin Yu  »View Author Affiliations


Optics Express, Vol. 21, Issue 14, pp. 17352-17358 (2013)
http://dx.doi.org/10.1364/OE.21.017352


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Abstract

In this paper, an in-line comb filter with flat-top spectral response is proposed and constructed based on a cascaded all-solid photonic bandgap fiber modal interferometer. It consists of two short pieces of all-solid photonic bandgap fiber and two standard single-mode fibers as lead fibers with core-offset splices between them. The theoretical and experimental results demonstrated that by employing a cut and resplice process on the central position of all-solid photonic bandgap fiber, the interference spectra are well tailored and flat-top spectral profiles could be realized by the controllable offset amount of the resplice. The channel position also could be tuned by applying longitudinal torsion with up to 4 nm tuning range. Such a flat-top fiber comb filter is easy-to-fabricate and with a designable passband width and flat-top profile.

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 25, 2013
Revised Manuscript: June 19, 2013
Manuscript Accepted: July 3, 2013
Published: July 12, 2013

Citation
Youfu Geng, Xuejin Li, Xiaoling Tan, Yuanlong Deng, and Yongqin Yu, "In-line flat-top comb filter based on a cascaded all-solid photonic bandgap fiber intermodal interferometer," Opt. Express 21, 17352-17358 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-14-17352


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References

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