An electro-optic polymer-cladded TiO2 waveguide modulator

Feng Qiu, Hiroki Miura, Andrew M. Spring, Jianxun Hong, Daisuke Maeda, Masa Aki Ozawa, Keisuke Odoi, Shiyoshi Yokoyama

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Organic electro-optic (EO) materials and their hybrid systems have received considerable attention for high-performance modulators. In this work, we demonstrate the design and fabrication of an EO modulator with a low half-wave voltage (Vπ) and a RF modulation response up to at least 10 GHz. The polymer used in this work has a glass transition temperature of 172 °C, which makes it stable even under high temperature RF sputtering. As a result, an EO polymer-cladded titanium dioxide (TiO2) waveguide structure can be utilized to enlarge the confinement factor, and thus, enable a low Vπ. The response of the modulator from 4 to 10 GHz has been measured, which shows a flat frequency response up to 10 GHz and a potential for the application in several tens GHz.

Original languageEnglish
Article number173301
JournalApplied Physics Letters
Issue number17
Publication statusPublished - Oct 24 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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