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Applied Optics

Applied Optics


  • Vol. 43, Iss. 6 — Feb. 20, 2004
  • pp: 1390–1395

Simulation of cross-talk reduction in multimode waveguide-based micro-optical switching systems by use of single-mode filters

Tetsuzo Yoshimura, Masanori Ojima, Yukihiko Arai, Nobuhiro Fujimoto, and Kunihiko Asama  »View Author Affiliations

Applied Optics, Vol. 43, Issue 6, pp. 1390-1395 (2004)

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We propose a method to reduce cross talk by using single-mode filters, namely, extracting the fundamental mode from a multimode optical network (EFMON). The EFMON effect is evaluated for a three-step switching system consisting of cascade electro-optic (EO) waveguide prism deflector (WPD) micro-optical switches (MOSs) and a multimode waveguide network. The WPD MOS is optimized for single-mode operation in lead lanthanum zirconate titanate thin films as EO slab waveguides with a driving voltage of 12 V, a length of 310 μm, and a channel distance of 20 μm. Beam propagation method simulation reveals that mode disturbance, higher-order modes, and cross talk are accumulated by switching steps. A single-mode filter for EFMON in the output region of the switching system reduces cross talk to below -20 dB at a propagation length of 2000 μm in the single-mode filter and below -30 dB at 20000 μm.

© 2004 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(130.2790) Integrated optics : Guided waves
(230.2090) Optical devices : Electro-optical devices
(230.7400) Optical devices : Waveguides, slab

Original Manuscript: May 13, 2003
Revised Manuscript: November 6, 2003
Published: February 20, 2004

Tetsuzo Yoshimura, Masanori Ojima, Yukihiko Arai, Nobuhiro Fujimoto, and Kunihiko Asama, "Simulation of cross-talk reduction in multimode waveguide-based micro-optical switching systems by use of single-mode filters," Appl. Opt. 43, 1390-1395 (2004)

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