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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 24 — Aug. 20, 2006
  • pp: 6168–6174

Moderate-to-high optical-isolation reconfigurable 1×2 fiber-optic add–drop switches using a dense wavelength division multiplexing thin-film filter

Sarun Sumriddetchkajorn and Kosom Chaitavon  »View Author Affiliations

Applied Optics, Vol. 45, Issue 24, pp. 6168-6174 (2006)

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We propose and experimentally demonstrate thin-film filter- (TF) based reconfigurable 1 × 2 fiber-optic add–drop switch (FADS) structures. Our key idea is to locate a movable mirror oriented at a desired angle near the TF to switch the desired wavelength optical beams to the wanted switching ports. Our first moderate-optical-isolation TF-based reconfigurable 1 × 2 FADS is in a transmissive design. Another TF-based reconfigurable 1 × 2 FADS structure is in a retroreflective configuration, and it gives a very low optical-coherent cross talk. Our experimental proof of concept using an off-the-shelf four-cavity TF measured center wavelength at 1545.749   nm and a 0 .8  mm × 0 .8  mm × 0 .15   mm movable mirror confirms a - 19   dB and a much improved < - 53   dB optical-coherent cross talk for our transmissive and retroreflective configurations, respectively.

© 2006 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
(060.4510) Fiber optics and optical communications : Optical communications
(310.0310) Thin films : Thin films

Original Manuscript: November 4, 2005
Revised Manuscript: February 23, 2006
Manuscript Accepted: March 24, 2006

Sarun Sumriddetchkajorn and Kosom Chaitavon, "Moderate-to-high optical-isolation reconfigurable 1×2 fiber-optic add-drop switches using a dense wavelength division multiplexing thin-film filter," Appl. Opt. 45, 6168-6174 (2006)

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