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Transversely tapered hybrid electro-optic polymer/sol-gel Mach-Zehnder waveguide modulators

We show results of a proposed hybrid modulator structure that reduces both the optical loss and half wave voltage ( V π ) . A sol-gel waveguide core transversely sandwiched between two Mach-Zehnder arms of electro-optic (EO) polymer cores enables an adiabatic transverse transition between the sol-ge...

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Published in:Applied physics letters 2008-05, Vol.92 (19), p.193508-193508-3
Main Authors: Enami, Y., Mathine, D., DeRose, C. T., Norwood, R. A., Luo, J., Jen, A. K.-Y., Peyghambarian, N.
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description We show results of a proposed hybrid modulator structure that reduces both the optical loss and half wave voltage ( V π ) . A sol-gel waveguide core transversely sandwiched between two Mach-Zehnder arms of electro-optic (EO) polymer cores enables an adiabatic transverse transition between the sol-gel and the EO polymer cores without the need for Y branches. The undercladding thickness is reduced to 3.7 μ m with negligible further optical loss from the bottom electrode. EO modulation with V π of 1.8 V at 1550 nm is demonstrated using a guest-host EO polymer, with an optical insertion loss of 13.7 dB in the transverse magnetic mode.
doi_str_mv 10.1063/1.2927489
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title Transversely tapered hybrid electro-optic polymer/sol-gel Mach-Zehnder waveguide modulators
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