Hybrid electro-optic polymer/sol-gel waveguide directional coupler switches

Y. Enami, D. Mathine, C. T. Derose, Robert A Norwood, J. Luo, A. K Y Jen, Nasser N Peyghambarian

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Abstract

We report electro-optic (EO) switches using transversely tapered hybrid EO/sol-gel waveguide directional couplers. The length of the active region critically reduces to 1.5 mm with transverse tapers, which is shorter by a factor of 5 than the active region with vertical tapers. The transitions are performed from a sol-gel core to two EO polymer cores with gradual index changes using gray-scaled photobleaching. The device shows the lowest switching voltage and an active length product (Vs La) of 2.9 V cm with a guest-host EO polymer AJLS102, compared to hybrid waveguide switches and modulators with vertical taper and higher EO coefficients.

Original languageEnglish (US)
Article number213513
JournalApplied Physics Letters
Volume94
Issue number21
DOIs
Publication statusPublished - 2009

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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