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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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
Issue number21
Publication statusPublished - 2009


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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