Patent ID: 6707967
Filing Date: 2004-03-16
Classification: G02B,Y10S

Abstract:
A device, comprising:a wave-guiding conduit configured to transport optical energy along an optic axis; a grating structure, formed in said wave-guiding conduit and operable to vary spatially with a grating period along said optic axis, to reflect an optical spectral component in said optical energy that satisfies a Bragg phase-matching condition with said grating structure; and a sampling structure formed in said wave-guiding conduit and overlapping said grating structure to include a phase sampling pattern with a sampling period greater than said grating period, each period of said phase sampling pattern including a plurality of contiguous, discrete spatial phase segments along said optic axis within each of which said grating structure does not change a phase, wherein said grating structure changes a phase between at least two adjacent phase segments.