This paper reviews the application of photonic crystals (PhCs) and related periodic structures to spectrometers and wavelength filters. In the first half of the paper in-plane type spectrometers utilizing superprism effect are reviewed. In the latter half out-of-plane and surface-normal type devices, where guided mode resonance (GMR) plays a center role, are described. Finally, Bragg reflection type wavelength filters are dealt with. Keywords: spectrometer, photonic crystal, superprism, subwavelengh grating, guided mode resonance, wavelength filter Classification: Fiber optics, Microwave photonics, Optical interconnection, Photonic signal processing, Photonic integration and systems Lightwave Technol., vol. 16, no. 4, pp. 631-638, 1998. [7] J. Song and N. Zhu, "Design and fabrication of compact etched diffraction grating demultiplexers based on a-Si nanowire technology," Electron. Lett., vol. 44, no. 13, pp. 816-817, 2008. [8] B. Momeni, M. Askari, E. S. Hosseini, A. Atabaki, and A. Adibi, "An on-chip silicon grating spectrometer using a photonic crystal reflector,"
References