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Optically reconfigurable patterning for control of the propagation characteristics of a planar waveguide
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10.1063/1.2998304
/content/aip/journal/apl/93/14/10.1063/1.2998304
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/14/10.1063/1.2998304
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Diagram of the experimental apparatus. IR light is coupled into and out of the device, which is a planar silicon oxynitride waveguide overcoated with a photosensitive polymer LC cladding layer. In this case patterned illumination of the LC cladding from interfering green laser beams produces in-plane Bragg reflection when the waveguide is rotated around an axis normal to its face to match the Bragg condition.

Image of FIG. 2.
FIG. 2.

The chemical structures of the copolymers used for the cladding and Bragg reflectivity vs waveguide orientation . Angle was converted into effective wavelength using the Bragg law to generate the lower scale.

Image of FIG. 3.
FIG. 3.

Waveguide transmission vs time and angle for writing with spatially modulated CP light , erasing with uniform CP light , and dark conditions . Complete erasure, not shown here, was found using longer erase times for writing energies .

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/content/aip/journal/apl/93/14/10.1063/1.2998304
2008-10-10
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optically reconfigurable patterning for control of the propagation characteristics of a planar waveguide
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/14/10.1063/1.2998304
10.1063/1.2998304
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