Electro-optic modulator based on micro-ring Mach-Zehnder interferometer structure

An electro-optical modulator and interferometer technology, which is applied in instruments, optics, nonlinear optics, etc., can solve the problems of fast modulation speed, small variation range, and low modulation efficiency.

Inactive Publication Date: 2013-09-11
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Among the three carrier modulation methods, the carrier injection type has the highest modulation efficiency due to the large change in the carrier concentration, but the modulation speed is also the slowest; the carrier accumulation and c

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  • Electro-optic modulator based on micro-ring Mach-Zehnder interferometer structure
  • Electro-optic modulator based on micro-ring Mach-Zehnder interferometer structure
  • Electro-optic modulator based on micro-ring Mach-Zehnder interferometer structure

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Embodiment Construction

[0015] 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 specific embodiments and with reference to the accompanying drawings.

[0016] figure 1 A schematic structural diagram of an electro-optic modulator based on a ring-symmetry Mach-Zehnder interferometer (Ring-SymMZI) in the first preferred embodiment of the present invention is shown. Such as figure 1 As shown, the two arms of the MZI of the electro-optic modulator are equal. The electro-optic modulator mainly includes:

[0017] Incident waveguide 1, the waveguide is a straight waveguide to reduce optical loss during transmission;

[0018] A curved waveguide 2, the waveguide and the incident waveguide 1 are arranged at a close distance, and the light of the incident waveguide can be partially coupled into the curved waveguide;

[0019] 1×2 beam splitter 3, the input end of which is connect...

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Abstract

The invention discloses an electro-optic modulator based on a micro-ring Mach-Zehnder interferometer structure. The electro-optic modulator comprises an incident waveguide, a bending waveguide, the Mach-Zehnder interferometer structure and a traveling wave electrode, the incident waveguide is a straight waveguide and used for receiving incident light and outputting emergent light, a short distance is formed between the bending waveguide and the incident waveguide, the incident light passing through the incident waveguide is coupled into the bending waveguide, the emergent light passing through the bending waveguide is coupled into the incident waveguide and outputted, an input end of the Mach-Zehnder interferometer structure is connected with an input end of the bending waveguide, an output end of the Mach-Zehnder interferometer structure is connected with an output end of the bending waveguide to form a micro-ring resonant cavity, the Mach-Zehnder interferometer structure is used for increasing light loss of the micro-ring resonant cavity, and the traveling wave electrode is used for loading voltage to the Mach-Zehnder interferometer structure, so that the Mach-Zehnder interferometer structure is used for modulating the intensity of light inputted into the structure. The MZI (Mach-Zehnder interferometer) structure is added into a micro-ring uncoupled area, and the incident light is modulated by switching over a micro-ring critical coupling state and a noncritical coupling state.

Description

technical field [0001] The invention relates to the field of high-speed electro-optic modulation, in particular to an electro-optic modulator based on a microring-Mach-Zehnder interferometer (Ring-MZI) structure, which provides a way to realize low power consumption and small-size photon integration. Background technique [0002] With the development of integrated circuit technology, the size of devices is getting smaller and smaller, and the resulting power consumption, crosstalk and delay are becoming more and more serious. Pure electrical devices can no longer meet the needs of information development, especially in the field of interconnection. , Therefore, in 1984, it was proposed to use optical interconnection instead of electrical interconnection. Compared with electrical interconnection, optical interconnection has many advantages, such as low delay, large transmission throughput, no interference and low energy consumption. In the field of photonic interconnection, ...

Claims

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Application Information

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IPC IPC(8): G02F1/01
Inventor 费永浩陈少武
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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