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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 36 — Dec. 20, 2013
  • pp: 8845–8853

All-optical switching in a symmetric three-waveguide coupler with phase-mismatched absorptive central waveguide

Yijing Chen, Seng-Tiong Ho, and Vivek Krishnamurthy  »View Author Affiliations


Applied Optics, Vol. 52, Issue 36, pp. 8845-8853 (2013)
http://dx.doi.org/10.1364/AO.52.008845


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Abstract

All-optical switching operation based on manipulation of absorption in a three-waveguide directional coupler is theoretically investigated. The proposed structure consists of one absorptive central waveguide and two identical passive side waveguides. Optically induced absorption change in the central waveguide effectively controls the coupling of light between the two side waveguides, leading to optical switching action. The proposed architecture alleviates the fabrication challenges and waveguide index matching conditions that limit previous demonstrations of similar switching schemes based on a two-waveguide directional coupler. The proposed device accommodates large modal index difference between absorptive and passive waveguides without compromising the switching extinction ratio.

© 2013 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(200.6715) Optics in computing : Switching
(230.7405) Optical devices : Wavelength conversion devices

ToC Category:
Optical Devices

History
Original Manuscript: September 4, 2013
Revised Manuscript: November 1, 2013
Manuscript Accepted: November 15, 2013
Published: December 17, 2013

Citation
Yijing Chen, Seng-Tiong Ho, and Vivek Krishnamurthy, "All-optical switching in a symmetric three-waveguide coupler with phase-mismatched absorptive central waveguide," Appl. Opt. 52, 8845-8853 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-36-8845


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