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http://dx.doi.org/10.3807/KJOP.2021.32.4.180

Optical-waveguide Phase Modulators Based on High-refractive-index Fluorinated Polyimide  

Lee, Eun-Su (Department of Electronics Engineering, Pusan National University)
Chun, Kwon-Wook (Department of Electronics Engineering, Pusan National University)
Jin, Jinung (Department of Electronics Engineering, Pusan National University)
Oh, Min-Cheol (Department of Electronics Engineering, Pusan National University)
Publication Information
Korean Journal of Optics and Photonics / v.32, no.4, 2021 , pp. 180-186 More about this Journal
Abstract
Fluorinated polyimide has excellent light transmittance and a high optical refractive index, and is useful for producing optical-waveguide phase modulators with low optical loss and low electric power consumption. In this work, an optical-waveguide phase modulator is designed and fabricated based on a high-refractive-index fluorinated polyimide, and its characteristics are measured. An efficient protocol for characterizing the loss components of the optical waveguide is proposed, and the propagation loss of the fabricated polyimide optical waveguide is confirmed to be 0.9 dB/cm. The phase modulator requires 9.1 mW of power for phase change of π, and the response time is 290 μs, which is improved by tenfold compared to a previous demonstration of polymeric phase modulators.
Keywords
Fluorinated polyimide; Phase modulator; Polymeric waveguide;
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