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

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

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We show results of a proposed hybrid modulator structure that reduces both the optical loss and half wave voltage (Vπ). 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 μm with negligible further optical loss from the bottom electrode. EO modulation with Vπ 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.

Original languageEnglish (US)
Article number193508
JournalApplied Physics Letters
Issue number19
StatePublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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