Realization of integrated Bragg reflectors in DANS-polymer waveguides

The fabrication of integrated optical Bragg grating reflectors in organic waveguides, utilizing a DANS (4-dialkylamino-4'-nitrostilbene) side-chain-substituted polymer is described. The devices operate in the 1.5- mu m telecommunication window and exhibit a linear narrowband filtering action with good throughput and coupling efficiency. The effect of a small slant in the channel direction is investigated experimentally. The structures have also been switched from a low to a high transmission state via a thermal refractive nonlinearity.<
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