Zobrazeno 1 - 9
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pro vyhledávání: '"John C. Brazas"'
Publikováno v:
Applied optics. 34(4)
Waveguide grating couplers that have surface corrugation on both boundaries of the waveguide were fabricated by the deposition of waveguide material at high-vacuum pressures onto a surface-relief grating etched into the substrate. A lateral shift bet
Publikováno v:
Applied optics. 31(18)
A new type of mode-index waveguide lens is presented that has acircular gradient-index boundaries. These lenses have relatively large apertures and are fabricated by physical vapor deposition by using organic materials. A deposition mask that is accu
Single-leakage-channel grating couplers: comparison of theoretical and experimental branching ratios
Publikováno v:
Optics letters. 18(22)
Fabrication and characterization of a waveguide grating that is highly efficient in producing a single channel of output-coupled light are described. The thin-film assembly consisted of a waveguide-grating system fabricated upon a highly reflecting d
Autor:
John C. Brazas, Marek W. Kowarz
Publikováno v:
SPIE Proceedings.
Eastman Kodak Company has developed a diffractive-MEMS spatial-light modulator for use in printing and display applications, the grating electromechanical system (GEMS). This modulator contains a linear array of pixels capable of high-speed digital o
Publikováno v:
Technical Digest. MEMS 2002 IEEE International Conference. Fifteenth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.02CH37266).
A diffractive optical MEMS device for spatial and temporal light modulation is described that is capable of high-speed digital operation. The device contains electromechanical ribbons suspended flat above a silicon substrate by a periodic series of i
Autor:
John C. Brazas
Publikováno v:
OSA Annual Meeting.
There has been continual interest in use of integrated optical devices for optical disk readout to analyze the beam returning from a disk surface for write-once and magneto-optical recording media.
Publikováno v:
SPIE Proceedings.
Passive integrated optical components have several advantages over conventional optical components including reduced size and weight, alignment as part of fabrication and integration with planar detectors and electronics. Waveguide lenses are recogni
Publikováno v:
Integrated Photonics Research.
Waveguide lenses are recognized as key components for signal processing and source collimation in integrated-optical systems. A mode-index-type waveguide lens is most similar in design to conventional bulk lenses, focusing by the curvature of the bou
Autor:
John C. Brazas
Publikováno v:
Optical Society of America Annual Meeting.
One avenue for reducing the mass and volume of optical recording heads is the use of integrated optical systems, completely integrated or hybrid with bulk optical components. The principles of design and the difficulties of implementing optical signa