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30 September 1996 Directional copuler modulator with thremo-controlled coupling coefficient
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Proceedings Volume 2891, Integrated Optoelectronics; (1996)
Event: Photonics China '96, 1996, Beijing, China
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%.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bing Zheng and Zheng Chen "Directional copuler modulator with thremo-controlled coupling coefficient", Proc. SPIE 2891, Integrated Optoelectronics, (30 September 1996);

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