Diffraction grating with reduced polarization-dependent loss

Details Diffraction grating with reduced polarization-dependent loss Diffraction grating with reduced polarization-dependent loss

2006-02-07

2006-02-07

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S572000

Reexamination Certificate

active

06995910

ABSTRACT:
A diffraction grating that achieves high diffraction efficiency at all polarizations for optical signals at telecommunications wavelengths is provided. The diffraction grating has a substrate and a plurality of reflective faces oriented at respective blaze angles θbspaced along the substrate surface, with the blaze angles substantially differ from the Lit trow condition. Each reflective surface is supported by a support wall connected substantially with the substrate surface.

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