High-nonlinearity micro-ring waveguide optical device

A waveguide light and microring technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as improving microring waveguide optical devices, and achieve the effects of enhancing nonlinear effects, improving efficiency, and reducing thresholds

Inactive Publication Date: 2014-02-12
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] At present, there is no technical solution that combines the parallel slot waveguide structure and the micro-ring...

Method used

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  • High-nonlinearity micro-ring waveguide optical device
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  • High-nonlinearity micro-ring waveguide optical device

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Embodiment Construction

[0031] Such as image 3 , 4 As shown, the pump light source or signal light source is laterally coupled into the parallel slot ring resonator 1 through the straight waveguide 2 (the pump light source or signal light source can be coupled into the straight waveguide 2 through the grating or tapered waveguide). When the light is coupled into the parallel slot ring resonator 1, due to the slot structure, with its high refractive index difference and strong optical confinement, the light intensity in the slot area reaches very strong, coupled with the resonance effect of the microring, at a lower Under the pump optical power, various nonlinear effects in the slot structure ring resonator are enhanced, the threshold is reduced, the efficiency is improved, and its high nonlinear effect can be used for all-optical signal processing. When the pump laser is coupled into the resonator, its energy exceeds the threshold of its parametric oscillation, and a new frequency will be excited t...

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Abstract

The invention relates to a micro-ring waveguide optical device capable of realizing all-optical signal processing by utilizing a high-nonlinearity effect, and aims to overcome the defect that nonlinear coefficients are insufficient when a conventional micro ring performs all-optical signal processing. The provided micro-ring waveguide optical device comprises a straight waveguide and a parallel growth micro ring on a substrate, wherein the micro ring is an annular resonant cavity; the ridge waveguide part of the micro ring adopts a parallel slot structure instead of a single ridge waveguide structure; and the straight waveguide is coupled with the micro ring. According to the micro-ring waveguide optical device, one parallel slot micro-ring waveguide structure is innovated; and when light is coupled into the parallel slot micro-ring waveguide structure, the slot waveguide structure can well limit a light field, the light intensity of resonance light is enhanced greatly due to the resonance effect of the micro ring, accordingly, various nonlinear effects of the micro ring are enhanced, the threshold value is reduced, the efficiency is improved, and the device can be applied to the all-optical signal processing fields such as optical frequency comb, wavelength conversion, logic gate, format conversion and the like.

Description

technical field [0001] The invention relates to the field of nonlinear effects and optical devices for all-optical signal processing, and more particularly relates to a microring waveguide optical device for realizing all-optical signal processing by utilizing high nonlinear effects. Background technique [0002] Since the 1970s, optical communication technology has been extensively researched and developed all over the world, and has become an important aspect of today's information technology development. The "optical device" is the core of the optical communication system, which has a great impact on the cost, capacity and power consumption of the communication system. Therefore, the research and marketization of optical devices have always been the key points in the development of optical communication technology. [0003] As far as optical devices are concerned, the further development is optical integration (integrated optics), which is the result of the development of...

Claims

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Application Information

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IPC IPC(8): G02F1/365
Inventor 刘德明夏历王元武张敏明
Owner HUAZHONG UNIV OF SCI & TECH
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