Silicon/electro-optic polymer hybrid directional coupler switch

Oscar D. Herrera, Roland Himmelhuber, Kyung Jo Kim, Robert A. Norwood, Nasser Peyghambarian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


A silicon waveguide in an electro-optic (EO) polymer cladding-based directional coupler switch was designed and fabricated. Optimal dimensions for efficient coupling and minimal crosstalk are found analytically (coupled mode theory) and numerically for 1550nm wavelength. Both coplanar electrode spacing and height are taken into account for most effective poling conditions and performance. The design consists of two 255nm wide waveguides separated by 500nm and is optimized for TE propagation. With an electrode separation of 4μm and coupling length of 1.7cm, a switching voltage (Vs) < 10V at an r33 of 250pm/V is expected.

Original languageEnglish (US)
Title of host publicationOptical Interconnects XIV
ISBN (Print)9780819499042
StatePublished - 2014
EventOptical Interconnects XIV - San Francisco, CA, United States
Duration: Feb 3 2014Feb 5 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptical Interconnects XIV
Country/TerritoryUnited States
CitySan Francisco, CA


  • Electro optic effect
  • Optical polymers
  • Optical waveguides
  • Semiconductor waveguides
  • Silicon devices

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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