Gallium arsenide clad optical waveguides

Gallium arsenide has been investigated as a waveguide-cladding material for use as a cutoff polarizer for integrated optics. Calculations show that a 20 nm thick film of GaAs can be used to select either the TM
0
mode or both TM
0
and TE
0
modes, while maintaining a guide attenuation of less than 100 cm
^-1
.