90° bent hollow waveguides with distributed Bragg reflectors (DBR) in silicon substrate are proposed. The air core was embedded by Si3N4/SiO2 multilayer. The two-dimensional (2-D) finite-difference time-domain (FDTD) method is used to simulate bending transmission efficiencies of the 90°-bent waveguides. The lowest 90° bending loss is around 0.8dB. This waveguide can be used in integrated planar light wave circuits.

© 2009 Optical Society of America

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