Electric-control broadband photon radio-frequency phase shifter based on silicon-based micro-ring resonant cavity

Abstract

The invention relates to an electrical-control broadband photon radio-frequency phase shifter based on a silicon-based micro-ring resonant cavity, belonging to the technical field of optical field communication and comprising a carrier-suppression optical double-sideband generating system, a silicon-based micro-ring resonant cavity system, a voltage source and a measuring system, wherein the carrier-suppression optical double-sideband generating system comprises an adjustable laser, a radio-frequency signal generator, a Mach-Zehnder modulator and a optical amplifier; the silicon-based micro-ring resonant cavity system comprises the silicon-based micro-ring resonant cavity and a microwave probe, wherein the silicon-based micro-ring resonant cavity comprises two silicon-based micro-rings with equal electrodes and radii, and a direct waveguide; and the measuring system comprises an optical amplifier, an adjustable narrow-band filter, an optical detector and an oscilloscope. The invention has the advantages small volume, simple structure and easy integration of the used devices as well as large phase shifting range approximate to 4 pi, high reaction speed, simple operation and low cost.

Description

technical field [0001] The invention relates to a device in the technical field of optical fiber communication, in particular to an electronically controlled broadband photonic radio frequency phase shifter based on a silicon-based micro-ring resonator. Background technique [0002] RF phase shifters have important applications in phased array radar systems and beamforming networks. The traditional radio frequency phase shifter mainly adopts switch line and microwave integrated circuit technology, which has the disadvantages of low operating frequency, large size, slow phase shift adjustment, and high complexity. Recently, the design of photonic RF phase shifters for phase control of RF signals in the optical domain by using optical fibers and other low-cost optical devices has received more and more attention. Compared with traditional electronic solutions, photonic RF phase shifters have the advantages of fast signal processing speed, large bandwidth, high precision, larg...

AI Technical Summary

Problems solved by technology

However, the phase shift range of this phase shifter is less than 360 degrees. At the same time, because the pump light power is used to control the phase shift, an additional laser is required to provide pump light, which is expensive, slow in response, and difficult to monitor and control.

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