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Record Details

Record 20 of 2198
Optical Waveguide Output Couplers Fabricated in Polymers
Author and Affiliation:
Watson, Michael D.(NASA Marshall Space Flight Center, Huntsville, AL United States)
Abushagur, Mustafa A. G.(Alabama Univ., Electrical and Computer Engineering Dept., Huntsville, AL United States)
Ashley, Paul R.(Army Missile Command, Weapons Sciences Directorate, Redstone Arsenal, AL United States)
Johnson-Cole, Helen(NASA Marshall Space Flight Center, Huntsville, AL United States)
Abstract: Waveguide output couplers fabricated in Norland Optical Adhesive (NOA) #81 and AMOCO Ultradel 9020D polyimide are investigated. The output couplers are implemented using periodic relief gratings on a planar waveguide. Design theory of the couplers is based on the perturbation approach. Coupling of light from waveguide propagation modes to output radiation modes is described by coupled mode theory and the transmission line approximation of the perturbed area (grating structure). Using these concepts, gratings can be accurately designed to output a minimum number of modes at desired output angles. Waveguide couplers were designed using these concepts. These couplers were fabricated and analyzed for structural accuracy, output beam accuracy, and output efficiency. The results for the two different materials are compared.
Publication Date: Jan 01, 1998
Document ID:
19990054827
(Acquired Aug 13, 1999)
Subject Category: OPTICS
Document Type: Reprint
Publication Information: Optical Engineering
Publisher Information: Optical Engineering Society of Photo Instrumentation Engineers, Bellingham, WA, United States
Contract/Grant/Task Num: RTOP 274-62-00
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: OPTICAL WAVEGUIDES; COUPLERS; FABRICATION; POLYIMIDES; COUPLED MODES; TRANSMISSION LINES; PROPAGATION MODES; INTEGRATED OPTICS; OPTICAL INTERCONNECTS; GRATINGS (SPECTRA)
Availability Source: Other Sources
Availability Notes: Abstract Only
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