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Turnable filter made of silicon based micro-ring

A filter and micro-ring technology, applied in the direction of instruments, light guides, optics, etc., can solve the problem of non-adjustable wavelength at the output end, and achieve the effect of large refractive index change range and sensitive response

Inactive Publication Date: 2017-02-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a tunable silicon-based microring filter, which aims to solve the problem that the output wavelength of the existing microring filter is not adjustable

Method used

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  • Turnable filter made of silicon based micro-ring
  • Turnable filter made of silicon based micro-ring
  • Turnable filter made of silicon based micro-ring

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] The present invention introduces the two-dimensional material graphene into the silicon-based microring, and changes the refractive index of the graphene material by applying a control voltage, thereby causing the output resonance wavelength of the entire microring to change, thereby realizing tunable filtering.

[0023] The invention proposes a tunable silicon-based microring filter, which changes the refractive index of the graphene material on the silicon-based microring by controlling the magnitude of the external voltage, thereby realizing the adjustment of the output wavelength of the m...

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Abstract

The invention discloses a turnable filter made of silicon based micro-ring. The filter comprises a straight wave guide, a silicon dioxide layer and a mixed micro-ring placed on the silicon dioxide layer. The mixed micro-ring includes a mixed wave guide and a pure silicon wave guide. The mixed wave guide comprises a graphite layer, a dielectric layer, a silicon layer and a silicon dioxide layer arranged sequentially from the top to the bottom. An upper electrode is placed on the graphite layer. A lower electrode is placed on the silicon layer. Both the upper electrode and the lower electrode are connected with external power sources. The voltage is charged through the upper electrode and the lower electrode to change the density of the inner charge carriers in atomic layers and change the deflection rate of the graphite material. Thus the filter changes the wave length of the output resonant wave output by the turnable silicon-based micro-ring filter to materialize the function of turnable wave filtration.

Description

technical field [0001] The invention belongs to the field of optical fiber communication and the field of integrated photonics, in particular to a tunable silicon-based micro-ring filter. Background technique [0002] Optical communication is one of the most important ways of modern information and transmission, and it is moving towards the direction of ultra-high speed, large capacity, large broadband, long distance, and low cost. Tunable optical filters have extremely important applications in optical fiber communication systems. They can be used as reflective cavity mirrors for lasers, multiplexers / demultiplexers, wavelength selectors, dispersion compensators, delayers, etc. The microring structure based on silicon-based materials has the characteristics of high integration, CMOS-compatible manufacturing process, good stability, and high nonlinear coefficient, and is suitable for the manufacture of tunable filters. [0003] Traditional silicon-based tunable filters mainl...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02B6/293
CPCG02F1/011G02B6/29376
Inventor 张敏明周飞亚刘德明
Owner HUAZHONG UNIV OF SCI & TECH