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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6494–6499

Symmetric 3×3 optical coupler using three parallel long-period fiber gratings

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

Optics Express, Vol. 15, Issue 10, pp. 6494-6499 (2007)

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We propose a new technique of realizing a symmetric 3×3 optical coupler, which is based on evanescent-field coupling among three identical parallel long-period fiber gratings placed side-by-side. Using three 32-mm-long over-coupled long-period fiber gratings embedded in a medium with a proper refractive index, we achieved equal power outputs from the three fibers at the resonance wavelength of the gratings with a total loss of about 1.4 dB when light was launched into any one of the fibers.

© 2007 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(350.2770) Other areas of optics : Gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 28, 2007
Revised Manuscript: April 23, 2007
Manuscript Accepted: May 7, 2007
Published: May 11, 2007

Yunqi Liu, Kin Seng Chiang, and Qing Liu, "Symmetric 3 x 3 optical coupler using three parallel long-period fiber gratings," Opt. Express 15, 6494-6499 (2007)

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