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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 36 — Dec. 20, 2002
  • pp: 7644–7649

Optimal design method of a low-loss broadband Y branch with a multimode waveguide section

Qian Wang, Jun Lu, and Sailing He  »View Author Affiliations


Applied Optics, Vol. 41, Issue 36, pp. 7644-7649 (2002)
http://dx.doi.org/10.1364/AO.41.007644


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Abstract

An optimal design method for a low-loss broadband silica-on-silicon Y branch is considered. A multimode waveguide section, which was used earlier to reduce the excess loss, is designed optimally when the light distribution at the end of the multimode waveguide section is matched to the profile of the symmetric supermode for the structure of the two branching waveguides. An optimization method that combines the genetic algorithm and a gradient-based search method is used to obtain the optimal geometrical parameters for the multimode waveguide section as well as the widths for the input and branching waveguides.

© 2002 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.3120) Optical devices : Integrated optics devices
(230.7370) Optical devices : Waveguides

History
Original Manuscript: May 23, 2002
Revised Manuscript: August 14, 2002
Published: December 20, 2002

Citation
Qian Wang, Jun Lu, and Sailing He, "Optimal design method of a low-loss broadband Y branch with a multimode waveguide section," Appl. Opt. 41, 7644-7649 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-36-7644

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