Design methods for focusing grating coupler using holographic optical elements |
Posted on:1989-08-24 | Degree:M.S | Type:Thesis |
University:The University of Arizona | Candidate:Cronkite, Patrick Joseph | Full Text:PDF |
GTID:2478390017955632 | Subject:Optics |
Abstract/Summary: | |
Light can be coupled out of a waveguide to a focused point by a focusing grating coupler and has possible applications in optical data storage. The grating can be fabricated with either e-beam techniques or holographic techniques. Two design methods are demonstrated that model the focusing grating coupler with holographic optical elements. Both methods take a geometrical optics approach to designing the holographic optical elements and both methods make use of commercially available ray trace programs.;The first method uses complicated non-rotationally symmetric construction optics and requires either a modified ray trace program or special user defined surfaces.;The second method involves a much simpler approach which did not require any changes to an existing ray trace program and requires only rotationally symmetric elements to correct the aberrations. |
Keywords/Search Tags: | Focusing grating coupler, Holographic optical elements, Ray trace program, Design methods, Optics |
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