Waveguide Microcavities with Photonic Crystal Mirrors

The fundamental properties of waveguide-based photonic crystals have been studied for some time and great progress in their understanding has been made.1 Reflectivities in the stop-band of photonic crystal mirrors in excess of 90%, have been observed as well as substantial pass-band transmission. The next stage is to use this knowledge for the design of active and passive devices. The study of cavities is a useful step in this direction, because cavities provide functionality in the form of filters and laser resonators as well as being versatile building blocks for miniaturized photonic integrated circuits.

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