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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 12 — Jun. 14, 2004
  • pp: 2616–2624

Tunable photonic-crystal waveguide Mach–Zehnder interferometer achieved by nematic liquid-crystal phase modulation

Chen-Yang Liu and Lien-Wen Chen  »View Author Affiliations


Optics Express, Vol. 12, Issue 12, pp. 2616-2624 (2004)
http://dx.doi.org/10.1364/OPEX.12.002616


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Abstract

Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation and because PC-based waveguides may be integrated into optical interferometers. We propose a novel tunable PC waveguide Mach–Zehnder interferometer based on nematic liquid crystals and investigate its interference properties numerically by using the finite-difference time-domain method. We can change the refractive indices of liquid crystals by rotating the directors of the liquid crystals. Then we can control the phase of light propagation in a PC waveguide Mach-Zehnder interferometer. The interference mechanism is a change in the refractive indices of liquid-crystal waveguides. The novel interferometer can be used either as an optically controlled on–off switch or as an amplitude modulator in optical circuits.

© 2004 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Research Papers

History
Original Manuscript: April 12, 2004
Revised Manuscript: May 26, 2004
Published: June 14, 2004

Citation
Chen-Yang Liu and Lien-Wen Chen, "Tunable photonic-crystal waveguide Mach�??Zehnder interferometer achieved by nematic liquid-crystal phase modulation," Opt. Express 12, 2616-2624 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-12-2616


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