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Curve auxiliary type high effective photoelectric modulator

An electro-optical modulator and bending technology, which is applied in optics, instruments, nonlinear optics, etc., can solve the problems of negative impact and no contribution of light field modulation, and achieve high modulation efficiency, large manufacturing tolerance, and high modulation rate Effect

Inactive Publication Date: 2007-10-10
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] According to the plasmonic dispersion effect, the change of the carrier concentration will lead to the change of the two parameters of the material (refractive index and optical field absorption coefficient), but in the above-mentioned several silicon-based optical modulators based on the plasmonic dispersion effect, only the A change in one parameter while a change in the other contributes little or even negatively to the light field modulation

Method used

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  • Curve auxiliary type high effective photoelectric modulator
  • Curve auxiliary type high effective photoelectric modulator
  • Curve auxiliary type high effective photoelectric modulator

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Embodiment Construction

[0018] Please refer to Fig. 1, a bending-assisted high-efficiency electro-optic modulator of the present invention includes an input waveguide 1, a modulation waveguide 3 and an output waveguide 2 smoothly connected in sequence, wherein the modulation waveguide 3 is curved A structure, which utilizes the plasma dispersion effect of the material to realize the intensity modulation of the light field; the modulation waveguide 3 includes an electrical modulation structure.

[0019] Wherein the waveguide structure is based on silicon or germanium silicon alloy or SOI material, which has plasma dispersion effect.

[0020] The input waveguide 1 and the output waveguide 2 are on the same side or different sides of the device.

[0021] Please refer to FIG. 1 again. FIG. 1 is a schematic structural diagram of an electro-optic modulator according to an embodiment of the present invention. The specific structure is a series of electro-optic modulators based on carrier absorption with dif...

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Abstract

A high efficiency electro-optical modulator of bended auxiliary type consists of an input waveguide, a modulated waveguide and an output waveguide. It is featured as setting said modulated waveguide to be bended structure and realizing intensity modulation of optical field by utilizing plasma dispersion effect of material.

Description

technical field [0001] The invention relates to a bending-assisted high-efficiency electro-optical modulator, which is suitable for the fields of photoelectric integration, optical signal processing and the like in optical communication systems. Background technique [0002] With the rapid development of optical communication technology, optical switches and modulation devices play an increasingly important role in the entire communication system. They are not only used as individual devices to realize the processing and modulation of optical signals, but also important components in subsystems such as optical cross-connect (OXC) and optical add-drop multiplexing (OADM). With the continuous improvement of microfabrication technology, integrated optical modulation devices have attracted more and more attention due to their significant advantages such as low power consumption and high speed. [0003] Common modulation mechanisms of integrated optical modulators include thermo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/12G02B6/13G02F1/01
Inventor 孙飞余金中陈少武
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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