Abstract
The waveguide type optical switches which operate through modal evolution have attracted much attention by their digital response against applied voltage [1]. The most basic form of this switch is the Y-branch optical switch. Most of the devices reported used straight waveguides to form the Y-branch. Some devices with curved waveguides (shaped branch) were reported recently [2][3]. However, the structure was optimized only for a specific drive voltage and crosstalk. In this report we propose structures which are optimized for a wide range of drive voltages.
© 1991 Optical Society of America
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