High efficiency electro-optic polymer/TiO2 waveguide modulators

Feng Qiu; Shiyoshi Yokoyama

doi:10.1117/12.2024803

10 September 2013 High efficiency electro-optic polymer/TiO₂ waveguide modulators

Feng Qiu, Shiyoshi Yokoyama

Proceedings Volume 8827, Optical Processes in Organic Materials and Nanostructures II; 88270A (2013) https://doi.org/10.1117/12.2024803
Event: SPIE Organic Photonics + Electronics, 2013, San Diego, California, United States

Abstract

In this work, we have demonstrated a phase modulator and a ring resonator modulator by using a thin TiO₂ and electrooptic (EO) polymer derived hybrid waveguide structure. This TiO₂ layer enables the modulators to be constituted without a top cladding, and also can enhance in-device EO coefficient from 70 to 120 pm/V. We utilized the high refractive index TiO₂ to confine a large fraction of light in the relatively low refractive index EO polymer layer. As a result, the phase modulator has a VπL of 3.3 V·cm, corresponding to 1.65 V·cm in a push-pull Mach-Zehnder interferometer structure. For the ring modulator, the resonance was observed to shift by 0.02 nm/V, and a modulation depth of 3dB was observed at the frequency response function at 20 kHz using 2 V_p-p clock signal.

Citation Download Citation

Feng Qiu and Shiyoshi Yokoyama "High efficiency electro-optic polymer/TiO₂ waveguide modulators", Proc. SPIE 8827, Optical Processes in Organic Materials and Nanostructures II, 88270A (10 September 2013); https://doi.org/10.1117/12.2024803

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