Optical Waveguide Tunable Phase Delay Lines Based on the Superior Thermo-Optic Effect of Polymer

Strong thermo-optic effect of polymers is useful for fabricating tunable phase-delay devices with low power consumption and wide tuning range. However, if the temperature change is increased to extend the tuning range, an attenuation of the guided light is accompanied by the refractive index gradien...

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Veröffentlicht in:Polymers 2018-05, Vol.10 (5), p.497
Hauptverfasser: Kim, Sung-Moon, Park, Tae-Hyun, Huang, Guanghao, Oh, Min-Cheol
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container_title Polymers
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creator Kim, Sung-Moon
Park, Tae-Hyun
Huang, Guanghao
Oh, Min-Cheol
description Strong thermo-optic effect of polymers is useful for fabricating tunable phase-delay devices with low power consumption and wide tuning range. However, if the temperature change is increased to extend the tuning range, an attenuation of the guided light is accompanied by the refractive index gradient across the waveguide core. For three different waveguide structures, in this study, the optimal structure of the device for a variable phase delay line was found by investigating the attenuation and interference phenomena accompanying phase modulation. By improving the uniformity of thermal distribution across the waveguide core, a phase delay of 130π rad was obtained with an output attenuation less than 0.5 dB.
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subjects Attenuation
Delay
Delay lines
Optical waveguides
Phase modulation
Power consumption
Refractivity
Tuning
title Optical Waveguide Tunable Phase Delay Lines Based on the Superior Thermo-Optic Effect of Polymer
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