title: Enhanced wavelength sensitivity of the self-collimation superprism effect in photonic crystals via slow light.
abstract: We demonstrate that the wavelength sensitivity of a self-collimation superprism in photonic crystals (PhCs) can be greatly improved via slow light. With the help of a saddle point Van Hove singularity, we present an approach to obtain such a wavelength-sensitive self-collimation superprism. Our superprism not only has extremely high wavelength sensitivity, but also can suppress beam divergence, irregular beam generation, and wavelength channel dropout, overcoming the limitations of traditional PhC-based superprisms. Based on our superprism, a high-performance compact demultiplexer is also proposed.
authors: Wei
authors: W
authors: Li
authors: Xiaogang
authors: X
authors: Zhang
authors: Xulin
authors: X
authors: Lin
authors: Xunya
authors: X
authors: Jiang