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Proceedings Paper

Directional copuler modulator with thremo-controlled coupling coefficient
Author(s): Bing Zheng; Zheng Chen
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Paper Abstract

A new version of thermo-optical modulator has been presented here. The device is a pair of single-mode parallel channel waveguides on glass substrate by using K-ion exchanging technique. A Ti-film strip heater is set on the separation to control the coupling coefficient between the two parallel waveguides. The deduced expression shows that the change of coupling coefficient is approximately proportional to the change of temperature. The output of coupler varies with sine square in which phase angle is linearly related to change of the index. The phase angle is controlled by thermo-optical effect in our study. The device is designed to operate at wavelength 632.8 nm, the measured modulation depth of the device is as high as 90%.

Paper Details

Date Published: 30 September 1996
PDF: 5 pages
Proc. SPIE 2891, Integrated Optoelectronics, (30 September 1996); doi: 10.1117/12.253179
Show Author Affiliations
Bing Zheng, Univ. of Electronic Science and Technology of China (China)
Zheng Chen, Univ. of Electronic Science and Technology of China (China)

Published in SPIE Proceedings Vol. 2891:
Integrated Optoelectronics
Ray T. Chen; Won-Tien Tsang; BingKun Zhou, Editor(s)

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