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We demonstrate a compact silicon-on-insulator wavelength division multiplexer. The device supports 21 channels, has 1 nm channel spacing and less than -10 dB crosstalk.
Electroholographic switching with rise-time of less than a nanosecond is henceforth demonstrated. The switching was done in theg44 configurationin which the Bragg condition is fulfilled for a single value of the electric field.
Using cis-trans isomerization of azo polymers we can fabricate waveguides, gratings and other periodic structures. Here we have fabricated a two dimensional photonic crystal which acts as an active Add/Drop WDM switch.
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