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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 25 — Sep. 1, 2009
  • pp: F61–F67

Development of long-period fiber grating coupling devices

Kin Seng Chiang  »View Author Affiliations

Applied Optics, Vol. 48, Issue 25, pp. F61-F67 (2009)

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A long-period fiber grating (LPFG) formed in a single-mode fiber is considered as an effective device to tap light from the core of fiber. This light-tapping property of the LPFG allows a new class of wavelength-selective optical couplers to be realized by using the configuration of parallel LPFGs. Over the years a number of four-port and six-port LPFG couplers with peak coupling efficiencies greater than 80% have been demonstrated. To further increase the functionality of LPFG couplers and facilitate device packaging and integration, long-period grating couplers formed in planar waveguides have also been proposed, and the preliminary results are promising. A review of these coupling devices is presented.

© 2009 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.7370) Optical devices : Waveguides
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Photonic Crystals and Gratings

Original Manuscript: April 13, 2009
Manuscript Accepted: June 1, 2009
Published: June 24, 2009

Kin Seng Chiang, "Development of long-period fiber grating coupling devices," Appl. Opt. 48, F61-F67 (2009)

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