Results 211 to 220 of about 24,147 (270)
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Polymer waveguide star coupler
Applied Optics, 1982A polymer waveguide star coupler formed by the selective photopolymerization method is described. This polymer waveguide star coupler has low insertion loss independent of the core and cladding dimensions of the optical fiber. The six-port star coupler obtained, with input and output fiber arrays, had an insertion loss of 2.6 dB and a loss variation ...
N, Takato, T, Kurokawa
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SPIE Proceedings, 1994
Samples of PMMA (Poly-(Methyl-Meth-Acrylate)) in combination with various substrates have been modified by ionizing radiation in order generate regions of increased refractive index. These waveguiding structures were used to build passive devices such as Y-branches, couplers and Mach-Zehnder-interferometers. The refractive index and beam profil and the
Werner F. Frank +11 more
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Samples of PMMA (Poly-(Methyl-Meth-Acrylate)) in combination with various substrates have been modified by ionizing radiation in order generate regions of increased refractive index. These waveguiding structures were used to build passive devices such as Y-branches, couplers and Mach-Zehnder-interferometers. The refractive index and beam profil and the
Werner F. Frank +11 more
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Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges, 2003
Summary from only given. Polymer optical waveguide devices have attracted a lot of attention with regard to applications in the all-optical network, basically, because they have the potential of added optical functionality and because they may be producible at low cost. The combination of a large thermo-optic (TO) coefficient with low heat conductivity
H.H. Yao +5 more
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Summary from only given. Polymer optical waveguide devices have attracted a lot of attention with regard to applications in the all-optical network, basically, because they have the potential of added optical functionality and because they may be producible at low cost. The combination of a large thermo-optic (TO) coefficient with low heat conductivity
H.H. Yao +5 more
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SPIE Proceedings, 1988
Polymeric waveguides doped with nonlinear organic materials have been fabricated by pre- and post-doping techniques. High quality, low-loss planar waveguides have been produced with doping concentrations in excess of 30% by weight. Selective doping has been used to define simple monomode channel waveguide structures. Fast acting nonlinear behaviour has
M J. Goodwin, R Cush, C Trundle
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Polymeric waveguides doped with nonlinear organic materials have been fabricated by pre- and post-doping techniques. High quality, low-loss planar waveguides have been produced with doping concentrations in excess of 30% by weight. Selective doping has been used to define simple monomode channel waveguide structures. Fast acting nonlinear behaviour has
M J. Goodwin, R Cush, C Trundle
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Optical Society of America Annual Meeting, 1990
We report the first colinear single-mode polymer waveguide modulator that can be formed on any smooth surface—including semiconductors, conductors, and insula tors—regardless of its conductivity and refractive index. The tunability of polymer film allows us to shift the guiding layer from step index profile to graded-index profile.
Ray T. Chen +4 more
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We report the first colinear single-mode polymer waveguide modulator that can be formed on any smooth surface—including semiconductors, conductors, and insula tors—regardless of its conductivity and refractive index. The tunability of polymer film allows us to shift the guiding layer from step index profile to graded-index profile.
Ray T. Chen +4 more
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Photoinduced diffraction in polymer waveguides
Applied Optics, 1993We report on techniques for measuring photoinduced diffraction in prism-coupled slab polymer waveguides. Diffraction effects resulting from photochromic gratings in slab waveguides of Disperse Red 1 dye in polymethylmethacrylate were studied. Optical damage in the form of diffractive mode conversion was observed when we coupled in light with a ...
J H, Andrews, K D, Singer
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Ultra low loss polymer waveguides
OFC 2003 Optical Fiber Communications Conference, 2003., 2003Single-mode perfluoropolymer waveguide structures exhibiting a polarization-independent ultra low loss of
A. Yeniay +4 more
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Modeling photobleached optical polymer waveguides
Applied Optics, 1995One of the most efficient ways to prepare nonlinear optical polymer channel waveguides is by photobleaching. To control the index profile precisely and to design and improve the performance of active electro-optical devices, modeling of the photobleaching process is important.
J, Ma +5 more
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Polymer and composite polymer slot waveguides
SPIE Proceedings, 2014A fully polymer slot Young interferometer operating at 633 nm wavelength was fabricated by using nanoimprint molding method. The phase response of the interference pattern was measured with several concentrations of glucose-water solutions, utilizing both TE and TM polarization states.
Fegadolli, William S. +8 more
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Polymer-clad electrospun polymer nanofiber waveguides
Materials Letters, 2013Abstract We fabricated electrospun polymer nanofiber waveguides composed of a poly(methyl methacrylate) nanofiber core doped with an organic dye and a Cytop cladding. Photoluminescence (PL) spectra are measured at the end face of individual cores with increasing distance ( d ) between the end face and the point of irradiation by the excitation laser ...
Yuya Ishii +2 more
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