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Optically Transparent Fluor-containing Polycarbonate with High Refractive Index for Thermo-optic Switch

Abstract

In this paper, we report the design, synthesis, and optical properties of novel fluorinated polycarbonate negative-type photoresist (FPC-PRs) used in thermo-optic switches. The novel polymer films are readily fabricated by spin coating on silicon wafer followed by irradiation with UV light and post-baking at 110 ˚C. These films exhibit low roughness, good thermal stability (Td: up to 292 ˚C), high transparency (up to 97.8% at 400 nm) and refractive indices (RI: 1.583-1.512 at 1550 nm). Channel optical waveguide and MZI thermo-optic waveguide switch arrays were fabricated based on the direct UV-written technique using the FPC-PR 2. The propagation loss of the channel waveguide was only 0.17 dB cm-1 at 1550 nm. The rise and fall times of the device applied 500 Hz square-wave voltage were 837 μs and 381.8 μs, respectively. The applied electric power was about 35 mW as the switching power, and the extinction ratio was measured to be about 14.0 dB.

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Publication details

The article was accepted on 10 Jun 2017 and first published on 13 Jun 2017


Article type: Research Article
DOI: 10.1039/C7QM00209B
Citation: Mater. Chem. Front., 2017, Accepted Manuscript
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    Optically Transparent Fluor-containing Polycarbonate with High Refractive Index for Thermo-optic Switch

    Z. Cai, Y. Zhang, Y. Song, Q. Cheng, Y. Zheng, Z. Cui, Z. Shi, C. Chen and D. Zhang, Mater. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QM00209B

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