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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 3 — Mar. 1, 2009
  • pp: 489–496

Coupled-mode analysis of Bragg-reflection filters based on asymmetric nonlinear dual-core fibers

Florence Y.M. Chan, Kiyotoshi Yasumoto, and P. Shum  »View Author Affiliations


JOSA A, Vol. 26, Issue 3, pp. 489-496 (2009)
http://dx.doi.org/10.1364/JOSAA.26.000489


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Abstract

We demonstrate a Bragg-reflection grating coupler using a nonlinear dual-core fiber with a long-period grating (LPG) and a fiber Bragg grating (FBG) inscribed in different cores. The LPG couples light from the primary core to the cladding, while the FBG operating in reflection acts to drop the channel from the secondary core. The coupler is nonreflective along the launching core. Theoretical analysis of this structure demonstrates a design for obtaining a flat-top bandpass filter with high reflectivity, steep band transitions, and negligible sidelobes. By launching an intense pump beam into the individual cores, a switchable and a wavelength tunable passband can be achieved. The results demonstrate the usefulness of the device as a grating-based all-optical element.

© 2009 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2310) Fiber optics and optical communications : Fiber optics
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(230.1480) Optical devices : Bragg reflectors
(350.2770) Other areas of optics : Gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 9, 2008
Revised Manuscript: November 23, 2008
Manuscript Accepted: November 25, 2008
Published: February 6, 2009

Citation
Florence Y. M. Chan, Kiyotoshi Yasumoto, and P. Shum, "Coupled-mode analysis of Bragg-reflection filters based on asymmetric nonlinear dual-core fibers," J. Opt. Soc. Am. A 26, 489-496 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-3-489


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