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A key function required in integrated optical sensing is the ability to analyze the spectrum of optical signal. Photonic crystals (PCs), due to their unique dispersion properties, are proper choices to realize such compact spectrometers in an integrated platform. The superprism effect in PCs has been proposed for compact wavelength demultiplexers
Dispersion properties of photonic crystals for wave propagation inside these structures have been proposed for a variety of applications. Wavelength demultiplexing is one of the major applications of unique dispersion properties of the photonic crystals
The superprism effect is one of unique dispersive properties of PCs that has been proposed for integrated wavelength demultiplexing. However, diffraction of separated wavelength channels has been a main drawback in such PC demultiplexers. We demonstrate in this talk new compact PC demultiplexers by combining diffraction compensation and the superprism effect with better resolution, smaller size, lower...
Compact spectrometers are one of important building blocks needed in implementing optical lab-on-a-chip sensing devices. Photonic crystal superprism demultiplexers due to their unique and strong dispersion properties are proper candidates for realizing such integrated spectrometers. We use a recently demonstrated device idea, i.e., focusing superprism photonic crystal demultiplexers, to implement...
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