Micro-ring coupling modulation structure based on graphene fine tuning coupling efficiency and use method thereof

Abstract

The invention discloses a micro-ring coupling modulation structure based on graphene fine tuning coupling efficiency and an application method thereof; the micro-ring coupling modulation structure comprises a micro-ring waveguide structure, a signal modulation structure, a phase modulation structure and a modulation coupling structure; the micro-ring waveguide structure is a runway type structureand comprises two arc waveguides and two straight waveguides; a signal modulation structure and a phase modulation structure are integrated in the upper straight waveguide area, a certain distance isfixed between the lower straight waveguide area and the modulation coupling structure, and graphene layers are embedded in the signal modulation structure, the phase modulation structure and the modulation coupling structure respectively. According to the micro-ring modulator based on the structure, the coupling efficiency between the micro-ring and the straight waveguide can be finely adjusted, so that the coupling efficiency can reach a desired specific value, the precision is relatively high, the micro-ring modulator plays a role in an application scene in which the coupling efficiency needs to be accurately controlled, and the working wavelength of the structure is tunable; the structure has important application value for a linearized integrated photonic device.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a microring coupling modulation structure based on graphene fine-tuning coupling efficiency and a method for using the same. Background technique [0002] As a device that realizes the conversion between electrical signals and optical signals, electro-optical modulators play a vital role in optical communication systems. With the increase in demand for analog modulation, people use various methods to improve the linearity of modulators. For example, circuit pre-compensation technology, feed-forward compensation technology, dual polarization technology, cascade technology and direct coupling scheme and other technologies, but these technologies all contain complex circuits or complex optical paths, making it difficult to compress the cost of devices. [0003] The ultra-linear microring resonator can realize the linear compensation of the optical path to the Mach-Zehnder (M...

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Problems solved by technology

[0004] The purpose of the present invention is to: aim at the technical problems that the coupling efficiency of the microring described in the above prior art cannot be regulated at higher precision and the operating wavelength of the microring is limited and cannot be tuned, the present invention provides a fine-tuning coupling based on graphene Efficient microring coupling modulation structure and its application method. The technical scheme of the invention proposes a new microring coupling modulation structure. The microring modulator based on this structure can fine-tune the coupling efficiency between the microring and the straight waveguide, so that It reaches a specific value we want with high precision, so it can play a role in application scenarios that require precise control of coupling efficiency, and the working wavelength of this structure can be tuned, which is important for linearized integrated photonic devices Value

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