Abstract
We report a successful experimental realization of a suspended silica splitter integrated on a silicon substrate. The silica splitter was photo-lithographically patterned, etched, and reflowed to form the suspended and rounded silica waveguide channels. The silica splitter showed a flat splitting ratio and excess loss over a wide wavelength range from 1520 to with a low crosstalk. Additionally, as a result of the very low nonlinear coefficients of silica, the splitting ratio is independent of input power.
© 2011 Optical Society of America
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