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Resonant cavity enhanced grapheme electric absorption modulator

An electro-absorption modulator and graphene technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of narrow modulation bandwidth, large insertion loss, and large volume, and achieve low insertion loss, low power consumption, and no polarization The effect of state requirements

Active Publication Date: 2013-05-08
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the shortcomings of traditional electro-optic modulators such as large volume, narrow modulation bandwidth, and large insertion loss, the present invention provides an enhanced electro-absorption modulator integrated with graphene and resonant cavity

Method used

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  • Resonant cavity enhanced grapheme electric absorption modulator
  • Resonant cavity enhanced grapheme electric absorption modulator
  • Resonant cavity enhanced grapheme electric absorption modulator

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. The structure described in the schematic diagram is just an example given to make this solution clearer, and the device involved in the present invention is not limited to the structure shown in the figure below. In the figure, for clarity, the thickness of the layer and the region is enlarged, as The schematic diagrams should not be considered to strictly reflect the geometric dimensions and the proportional relationship between the various layers.

[0024] Such as figure 1 , 2 As shown in and 3, the resonator-enhanced graphene electroabsorption modulator provided by the present invention is made on the substrate, and the electroabsorption modulator includes: a lower reflector 2 formed on the substrate 1; a lower reflecto...

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Abstract

The invention discloses a resonant cavity enhanced grapheme electric absorption modulator which is manufactured on an underlay. The resonant cavity enhanced grapheme electric absorption modulator comprises a lower reflector formed on the underlay, a medium buffering layer formed on the lower reflector, a single layer grapheme thin membrane formed on the medium buffering layer, an upper reflector formed on a distributed Bragg reflector (DBR) structure of the single layer grapheme thin membrane, and a metal positive electrode formed on the single layer grapheme thin membrane and arranged on the periphery of the upper reflector in a surrounding mode. Due to the fact that light lights on a component in a perpendicular mode, the resonant cavity enhanced grapheme electric absorption modulator is capable of adjusting level of Fermi level in grapheme by exerting gate bias on the component, and thus whether the grapheme absorbs the light is controlled, and the purpose of light modulation is achieved. The resonant cavity enhanced grapheme electric absorption modulator has the advantages of being capable of being large in degree of freedom of design of size and spectrum modulation range, low in consumption, low in insertion loss, free from polarization state requirements to light signals, and prone to silicon substrate integration.

Description

technical field [0001] The invention relates to the technical fields of graphene application and optical communication, in particular to a resonant cavity enhanced graphene electroabsorption modulator. Background technique [0002] Optical fiber communication technology is the main form of modern communication, which has the characteristics of high speed, low loss, broadband, and high reliability. The optical modulator plays a vital role in the modulation of optical signals in optical fiber communication. Its function is to load bit signals onto optical waves, and generate modulated optical pulses through continuous switching. The optical modulator is a device that regulates the absorption rate, refractive index, phase or amplitude of the output light through changes in voltage or electric field. The optical modulator is based on various forms of electro-optic, acousto-optic, magneto-optic effects, quantum well Stark effects and Carrier dispersion effect, etc., adjust the a...

Claims

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Application Information

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IPC IPC(8): G02F1/03
Inventor 尹伟红韩勤杨晓红
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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