Search Results - "Ashley, P.R."

Backscatter Compensation in IFOG Based Inertial Measurement Units With Polymer Phase Modulators by Sanghadasa, M., Ashley, P.R., Lindsay, G.A., Bramson, M.D., Tawney, J.

“…Precision guidance in navigation systems requires highly accurate, compact, and low cost inertial measurement units (IMUs). The key active guided-wave…”
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Design and Demonstration of Polarizing Polymer Waveguides Using Birefringent Polymers by Sanghadasa, M., Ashley, P.R., Guenthner, A.J., Lindsay, G.A., Bramson, M.D.

“…TE-pass and TM-pass polarizing waveguides were fabricated by adjusting the birefringence properties of multi-layer stacks. The desired values of indices of…”
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Fabrication of low-loss optical-quality polymer waveguide facets in multilayer polymer devices using an inductively coupled plasma by Diffey, W.M., Trimm, R.H., Temmen, M.G., Ashley, P.R.

“…A systematic study of the etching of multilayer polymer stacks using an inductively coupled plasma (ICP) has been performed. The optimized parameters were used…”
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A simplified technique for efficient fiber-polymer-waveguide power coupling using a customized cladding with tunable index of refraction by Sanghadasa, M., Ashley, P.R., Webster, E.L., Cocke, C., Lindsay, G.A., Guenthner, A.J.

“…A novel technique to minimize the mode mismatch between the fiber and waveguide modes in integrating optical fiber to polymer waveguides is presented. The mode…”
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Modeling of optical waveguide poling and thermally stimulated discharge (TSD) charge and current densities for guest/host electro-optic polymers by Watson, M.D., Ashley, P.R., Abushagur, M.A.G.

“…A charge density and current density model of a waveguide system has been developed to explore the effects of electric field electrode poling. An optical…”
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Dynamic MEMS-based photonic bandgap filter by Trimm, R.H., Tuck, E.J., Tuck, G., Buncick, M.C., Kranz, M., Reiner, P., Temmen, M.G., Ashley, P.R.

“…This paper presents the development of an integrated fast filtering system using a photonic band gap (PBG) filter and a microelectromechanical systems (MEMS)…”
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Modeling of electrooptic polymer electrical characteristics in a three-layer optical waveguide modulator by Watson, M.D., Ashley, P.R., Guenthner, A.J., Abushagur, M.A.G.

“…The electrical characteristics of electrooptic polymer waveguide modulators are often described by the bulk reactance of the individual layers. However, the…”
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Guided wave modulators in Ti ion implanted LiNbO/sub 3/ waveguides by Ashley, P.R., Chang, W.S.C., Buchal, C.J., Thomas, D.K.

“…Electrooptic modulators in Ti-ion-implanted LiNbO/sub 3/ waveguides are discussed. Low loss (<1-dB/cm) planar and channel waveguides were fabricated and…”
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A novel pulse-poling technique for EO polymer waveguide devices using device electrode poling by Tumolillo, T.A., Ashley, P.R.

“…The authors describe a novel method for poling electrooptic polymer modulators using a pulse-poling technique. Device electrodes were used directly for poling,…”
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High-performance Mach-Zehnder modulators in multiple quantum well GaAs/AlGaAs by Cites, J.S., Ashley, P.R.

“…We demonstrate Mach-Zehnder interferometric waveguide intensity modulators which employ electrorefraction due to the quantum-confined Stark effect in multiple…”
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Doped optical claddings for waveguide devices with electrooptical polymers by Ashley, P.R., Sornsin, E.A.

“…Optical claddings used with electrooptical polymer waveguides were doped with organic salts. The resulting decrease in resistivity was used to increase the…”
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Temperature effects on the fabrication of optical channels in planar GaAs/AlGaAs waveguides using MeV ions by Taylor, T, Ila, D, Zimmerman, R.L, Cochrane, J.C, Ashley, P.R, Poker, D.B, Hensley, D.K

“…We have fabricated optical channels in selectively masked planar GaAs/AlGaAs waveguide structures using both 10 MeV oxygen and 8 MeV carbon ions. Implantation…”
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Development of tapered glass coupling waveguides for source radiation input into multichannel LiNbO/sub 3/ modulator arrays by Cox, H.L., O'Connor, S.D., Ashley, P.R., Morgan, R.L.

“…The investigation shows that a tapered glass optical waveguide provides an effective coupling device for introducing and directing radiation from a…”
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Optical changes induced in GaAs/AlGaAs waveguides by MeV ion bombardment by Taylor, T., Ila, D., Zimmerman, R.L., Ashley, P.R., Poker, D.B., Hensley, D.K.

“…We have fabricated optical channel waveguides in selectively masked planar GaAs/AlGaAs waveguide structures using MeV carbon and oxygen ions without post…”
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Third-order optical nonlinearities of composites in waveguide geometry by Bloemer, M.J., Ashley, P.R., Haus, J.W., Kalyaniwalla, N., Christensen, C.R.

“…Results of degenerate four-wave mixing experiments in planar waveguides of gelatin doped with small gold particles are presented. The nonlinear response of the…”
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Investigation of the Interaction of Surface Plasmons (SP) with an Electro Optic Polymer and Development of SP Optical Devices by Buncick, M.C., Ashley, P.R., Scalora, M., Akozbek, N., Vincenti, M.A., Centini, M., Fowlkes, J.D., Ivanov, I.N.

“…We are designing and fabricating arrays of subwavelength SP structures in metal films and combining these structures with EO polymers to understand the…”
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Dynamic MEMS based photonic bandgap filter by Trimm, R.H., Tuck, E.J., Tuck, G., Buncick, M.C., Reiner, P., Kranz, M., Temmen, M.G., Ashley, P.R.

“…Presents the development of an integrated fast filtering system using a photonic band gap (PBG) filter and a MEMS actuator. The actuator varies the air gap…”
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