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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 11 — Jun. 1, 2009
  • pp: 1726–1728

Optical coupling between a long-period fiber grating and a parallel tilted fiber Bragg grating

Yunqi Liu, Qing Liu, and Kin Seng Chiang  »View Author Affiliations


Optics Letters, Vol. 34, Issue 11, pp. 1726-1728 (2009)
http://dx.doi.org/10.1364/OL.34.001726


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Abstract

We experimentally demonstrate the contradirectional optical coupling between two parallel fibers that contain a long-period fiber grating and a tilted fiber Bragg grating, respectively. Strong coupling occurs between the cladding modes of the same order over the overlapped resonance bands of the two gratings. By optimizing the coupling conditions, we achieve a peak coupling efficiency of 80 % at 1534   nm with a 3 dB bandwidth of 0.12   nm and a side-mode suppression ratio of 16   dB , regardless of which fiber light is launched into. This coupler configuration can be explored for the development of narrow-band all-fiber optical components.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 3, 2009
Manuscript Accepted: April 27, 2009
Published: May 29, 2009

Citation
Yunqi Liu, Qing Liu, and Kin Seng Chiang, "Optical coupling between a long-period fiber grating and a parallel tilted fiber Bragg grating," Opt. Lett. 34, 1726-1728 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-11-1726


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