Method and device for reducing polarization dependence in an...

Details Method and device for reducing polarization dependence in an... Method and device for reducing polarization dependence in an...

G - Physics

02

B

G02B 6/024 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2371497

A polarization compensator is disclosed for passing light in a predetermined wavelength range. The compensator has unequal output orthogonal polarizations for light launched into the device within a specific wavelength range. A waveguide having a blazed grating having a blaze angle .theta.bl of between 20° and 45° with respect to the optical axis of the waveguide exhibits a tap efficiency difference for orthogonal polarizations for offsetting and lessening a polarization dependence of the device. This waveguide is optically coupled with the optical device requiring polarization compensation. The grating is oriented about its optical axis to lesson the inequality in output orthogonal polarizations for light launched into the optical device.

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