Method for implementing optical bullet propagation without time-space stretching by using photon crystal

Abstract

The invention relates to a photo bomb transmission method without time-space widening using photon crystal, which comprises following steps: determining aperture size, the aperture is needed which can superpose self-collimation area of equifrequency graph and zero group velocity dispersion area of group velocity dispersion graph according to photon crystal dispersion relation equifrequency graph and group velocity dispersion graph; perforation, adopting monocrystalline silicon material, perforating the monocrystalline silicon using electron beam exposure and ICP etching technology, to form periodically arranged air round aperture array of square crystal lattice or triangular crystal lattice, the aperture being above-mentioned size. The invention provides a convenient, energy-saving and brand-new means for accomplishing photon bomb transmission, also provides a basic medium material for optical signal transmission and processing, which will be widely used in field of optical integration, optical transmission and optical chip and signal processing.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a method for realizing photon bullet propagation without time-space expansion by using photonic crystals. Background technique [0002] With the development of all-optical communication and all-optical computing, there is an increasing demand for stable optical pulses in information transmission and signal processing based on optical chips [1 G.P. Agrawal, Nonlinear Fiber Optics, Academic Press, Singapore, 2005. ，2 H.A. Haus and W.S. Wong, Solitons in optical communications, Rev. Mod. Phys. 68 4231996 ] . The stable + light pulse can not only be directly used as the carrier of binary information, but also meet the requirements of signal processing in the all-optical system because of its non-diffusion property in space. The traditional way to obtain stable light pulses is to use nonlinear materials [3 Y. Silberberg, Collapse of optical pulses, Opt. L...

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Problems solved by technology

[0003] Although stable light transmission can be achieved with nonlinearity, the nonlinearity is energy dependent and there is an energy threshold below which the propagation of solitons will be divergent

Moreover, the nonlinear mechanism is strongly dependent on nonlinear materials, and there are not many nonlinear materials that can be used in practice. This dependence greatly limits the materials that can be applied.

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