Bend losses of bent multimode waveguides have been experimentally studied. The results experimentally verify a simple analytical expression based on ray optics that can be used to determine bend losses in bent multimode waveguides. We have also shown that bend-induced losses in such multimode optical waveguides are wavelength independent.

Ah.WoCl-A m u l t i o d e fih+matched arrayed waveguide grating-based demultiplexer has befn demonstrated. In thb design. multimode waveguides have been used 85 m y clements. The device, which can he used in short-dbtance communications, has been realized using low-cos1 polymer planar waveguide technology. Three wavclenglh ehanncls were SUCC~S.fully separsled. The average fiber-to-fiber inserlion loss W&F 14 dB and the WOIsl-cBsc cmss talk was c -12.5 dB.