Fabrication And Characterisation Of Processable Polydiacetylene Waveguides

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Abstract
The synthesis of a new class of soluble polydiacetylenes is reported. Large area films of one of this class, 9-SMBU, have been formed by deposition from solution. The non-linearity of films of 9-SMBU has been measured by THG and demonstrates the trade-off between processability and non-linearity. The material was also deposited in channels etched in Si0xNy substrates and we have demonstrated, for the first time, channel optical waveguiding in a non-linear polydiacetylene material. Linear optical characterisation of these channels has been carried out at a laser wavelength of 1.3 μm. These waveguides should allow demonstrations of all-optical non-linear effects in guided wave devices.

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