Reflective microring resonator, multi-wavelength light delayer and photon beam-forming chip

Abstract

The invention discloses a reflective microring resonator. The reflective microring resonator comprises an upper download type microring resonator, wherein the upper download type microring resonator comprises a microring and a channel waveguide coupled with the microring, a download end of the upper download type microring resonator is provided with a light reflection structure, and the reflectivemicroring resonator further comprises a coupling control module used for controlling the coupling amount of the microring and the channel waveguide to make a group delay state of resonant light in two directions in the reflective microring resonator satisfy the fast and slow light cancellation condition. The invention further discloses a multi-wavelength light delayer, a photon beam-forming method and a photon beam-forming chip. The reflective microring resonator is advantaged in that true wideband light delay can be achieved, and the delay amount can be flexibly adjusted.

Description

technical field [0001] The invention relates to a microring resonator and belongs to the technical field of microwave photonics. Background technique [0002] In recent years, with the progress of semiconductor technology, signal processing technology and optoelectronic technology, especially the rapid development of semiconductor optoelectronic integration technology, optical beamforming technology, an important component of optoelectronic technology, has also been applied in integrated microwave photonics. The so-called optical beamforming is to apply photonics means to control the beam, that is, to modulate the radio frequency signal onto the optical carrier, then realize the control of the beam in the optical band, and finally demodulate the radio frequency signal and feed it to the antenna. In the whole system, the beam pointing is controlled in the optical band, so it is called an optical beamforming system. [0003] Compared with traditional beamforming methods, opti...

AI Technical Summary

Problems solved by technology

However, the traditional optical microring resonator has a Lorentzian group delay response and a narrow bandwidth.

By adopting series or parallel micro-ring schemes, the bandwidth can be increased to achieve a flat group delay response, but it also greatly increases the complexity of the system, the difficulty of control, and the cost and power consumption.

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