Bridge-Suspended Silica-Waveguide Thermo-Optic Phase Shifter and Its Application to Mach-Zehnder Type Optical Switch

Akio SUGITA  Kaname JINGUJI  Norio TAKATO  Katsumi KATOH  Masao KAWACHI  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.1   pp.105-109
Publication Date: 1990/01/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on International Conference on Integrated Optics and Optical Fiber Communication)
Category: Optical Waveguides and Their Devices

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A thermo-optic phase shifter consisting of a thin film heater deposited on a bridge-suspended silica waveguide on a silicon substrate is proposed for reducing electric power consumption of the phase shifter. A successful application to a guided-wave 22 optical switch is demonstrated. The electric power consumption has been reduced to 1/2 to 1/10 depending on the bridge structure.