Abstract
We present an experimental demonstration of high bending efficiency $({>}80\hbox{\%})$ in on-chip hollow core of Bragg waveguides. Laser light in the
wavelength range 1260–1630 nm is coupled into the hollow core of
Bragg waveguides made of alternating silicon and silicon dioxide layers, and
the transmission intensity of straight waveguides and waveguides with two
bends are compared. Guiding by both types of waveguides is observed over a
wide range of $\lambda$ (${\sim} 150$ nm).
© 2010 IEEE
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