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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 21 — Jul. 20, 2009
  • pp: 4213–4218

Variable optical attenuator using thermo-optic two-mode interference device with fast response time

Partha P. Sahu  »View Author Affiliations


Applied Optics, Vol. 48, Issue 21, pp. 4213-4218 (2009)
http://dx.doi.org/10.1364/AO.48.004213


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Abstract

A thermo-optic two-mode interference (TMI) waveguide structure with a silicon trench and heat- insulating grooves in both sides of the core has been proposed for a variable optical attenuator (VOA) with fast response time. Thermal analysis of the proposed thermo-optic TMI waveguide structure with a silicon oxinitride (SiON) core has been performed by using the implicit finite difference method. The heating power required to achieve the attenuated power of 25.5 dB for a VOA with a silicon trench is 460 mW , which is approximately 1.8 times less than that of a VOA without a silicon trench. The response time is estimated as 98 μs , which is faster than the response time of the existing VOA.

© 2009 Optical Society of America

OCIS Codes
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Integrated Optics

History
Original Manuscript: February 12, 2009
Revised Manuscript: June 16, 2009
Manuscript Accepted: June 22, 2009
Published: July 15, 2009

Citation
Partha P. Sahu, "Variable optical attenuator using thermo-optic two-mode interference device with fast response time," Appl. Opt. 48, 4213-4218 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-21-4213

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