The needed parameters and configurations that would lead to the achievement of ultranarrow spectral bandwidths in polymer-based resonant grating waveguide structures are presented. These include the addition of an upper polymeric layer to the basic configuration and increasing the waveguide thickness. The results reveal that spectral bandwidths as narrow as 0.15 nm at 1.5 μm can be achieved.
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Katchalski et al. (2004) studied this question.
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