Hybrid cross-linkable polymer/sol-gel waveguide modulatorswith 0.65 V half wave voltage at 1550 nm

The authors report on a hybrid cross-linked electro-optic (EO) polymer/sol-gel Mach-Zehnder waveguide modulator with a half wave voltage ( V π ) of 0.65 V at 1550 nm . The low V π was achieved by a design that (1) combines both physical vertical tapers in the sol-gel core and photobleached index tap...

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Bibliographic Details
Published in:Applied physics letters 2007-08, Vol.91 (9), p.093505-093505-3
Main Authors: Enami, Y., Mathine, D., DeRose, C. T., Norwood, R. A., Luo, J., Jen, A. K.-Y., Peyghambarian, N.
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Summary:The authors report on a hybrid cross-linked electro-optic (EO) polymer/sol-gel Mach-Zehnder waveguide modulator with a half wave voltage ( V π ) of 0.65 V at 1550 nm . The low V π was achieved by a design that (1) combines both physical vertical tapers in the sol-gel core and photobleached index tapers in the EO polymer and (2) reduces the thickness of the device to 8 μ m . These combined physical and index tapers result in improved optical mode confinement in the EO polymer with low adiabatic optical transition loss. The reduced thickness results in a larger field across the EO polymer for the same voltage, enabling a lower V π .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2776369