Unprecedented highest electro-optic coefficient of 226 pm/V for electro-optic polymer/TiO2 multilayer slot waveguide modulators | Zendy

Youssef Jouane | Zendy; Y.C. Chang | Zendy; D. Zhang | Zendy; Jingdong Luo | Zendy; Alex K.Y. Jen | Zendy; Yasufumi Enami | Zendy

Open Access

Unprecedented highest electro-optic coefficient of 226 pm/V for electro-optic polymer/TiO2 multilayer slot waveguide modulators

Author(s) -

Youssef Jouane,

Y.C. Chang,

D. Zhang,

Jingdong Luo,

Alex K.Y. Jen,

Yasufumi Enami

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.027725

Subject(s) - materials science , cladding (metalworking) , pockels effect , optics , polymer , thin film , optoelectronics , wavelength , refractive index , coating , waveguide , electro optics , titanium dioxide , laser , composite material , nanotechnology , physics

We investigated the electrical properties and optical quality of two layers a titanium dioxide (TiO₂) selective layer and a sol-gel silica cladding layer for use as coating layers for nonlinear optic (NLO) polymers in electro-optic (EO) polymer/TiO₂ multilayer slot waveguide modulators. We used a simple ellipsometric reflective technique developed by Teng and Man to measure the electro-optic (EO) coefficients of poled thin films of an EO polymer in an EO multilayer device. The Pockels coefficient was enhanced up to 226 and 198 pm/V at wavelengths of 1.31 and 1.55 μm, respectively, when optimally poled with TiO₂ and a sol-gel silica cladding.

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