Optimization method for slow light characteristics of elliptical-hole photonic crystal Slot waveguide

Abstract

The invention discloses an optimization method for slow light characteristics of an elliptical-hole photonic crystal Slot waveguide. The optimization method realizes the slow light characteristics oflarge broadband and low group velocity dispersion through filling the first row of air holes close to an air slot with a liquid with the refractive index being n1 and filling the second row of air holes with a liquid with the refractive index being n2 in the elliptical-hole photonic crystal Slot waveguide and adjusting the refractive index of the liquids according to the slow light effect. According to the optimization method provided by the invention for the slow light characteristics of the elliptical-hole photonic crystal Slot waveguide, the elliptical-hole photonic crystal Slot waveguide can be reutilized, liquids with different refractive indexes can be filled in the same photonic crystal Slot waveguide according to practical application requirements so as to realize different slot light characteristics, and the utilization rate of the photonic crystal Slot waveguide is improved.

Description

technical field [0001] The invention relates to the design field of micro-nano optoelectronic devices, in particular to a method for optimizing slow light characteristics of an elliptical-hole photonic crystal Slot waveguide. Background technique [0002] Slow light means that light travels at a group velocity lower than the vacuum speed of light c. Taking advantage of the high-speed propagation characteristics of light in the medium, modern optical interconnection and optical communication technologies have greatly changed human society and promoted the continuous development of the information age. As we all know, in the current practical optical communication, there are reliable technical means for the buffering and delay of electrical signals, but the conversion between photoelectric and electro-optical signals is often required for signal buffering and conversion, and this conversion obviously limits the transmission of signals Speed ​​and efficiency. If all-optical c...

AI Technical Summary

Problems solved by technology

However, since the hole shape and size of photonic crystals are difficult to control precisely, although the above methods have improved the slow light characteristics of photonic crystal slot waveguides to a certain extent, but at the same time increased the complexity of the preparation of photonic crystal slot waveguides.

Moreover, in practical applications, the slow light characteristics of photonic crystal slot waveguides will inevitably be affected by manufacturing errors such as aperture size and position size, which will severely limit the application range of photonic crystal slot waveguide slow light

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