A Reconfigurable Optoelectronic Oscillator Based on Spectral Segmentation

Abstract

The present invention discloses a reconfigurable optoelectronic oscillator based on spectral division. The reconfigurable optoelectronic oscillator comprises a light source, an optoisolator, an optical modulator, an optical amplifier, an array waveguide grating, an MEMS optical fiber switch, a multi-core optical fiber fan-in coupler, a pumping light source, a multi-core optical fiber, a multi-coreoptical fiber fan-out coupler, an optical receiver, an electric coupler, an electric filter and an electric amplifier. The reconfigurable optoelectronic oscillator performs spectral division for a broadband light source to construct one equivalent dual-ring oscillation circuit in each single multi-core optical fiber to output corresponding optoelectronic oscillation signals. The MEMS optical fiber switch performs tuning of the optoelectronic oscillation signal frequency, and the pumping light source is employed to perform tuning of the optoelectronic oscillation signal bandwidth. The reconfigurable optoelectronic oscillator solves the problem of the dependence on a narrow-band light source by a conditional optoelectronic oscillator and the stability of the output optoelectronic oscillation signals caused by the dual-ring oscillation circuits with obvious length difference and separation structures, and the frequency and the bandwidth of the optoelectronic oscillation signals are tunable so as to construct a reconfigurable optoelectronic oscillator.

Description

technical field [0001] The invention relates to a photoelectric oscillator and belongs to the technical field of microwave photonics. Background technique [0002] Microwave / millimeter wave signal sources are widely used in many fields such as radar, wireless communication, inter-satellite link and modern measurement. Traditional electrical methods to generate high-frequency microwave / millimeter wave signals usually need to be realized by frequency doubling, which will greatly deteriorate the phase noise of the signal. As a result, the practice of using photonics methods to generate microwave signals came into being. The integration and intersection of photon technology and microwave technology has promoted the development of each other and opened up a new research field of microwave photonics. In the field of microwave photonics research, the technologies related to the generation of high-frequency microwave / millimeter wave signals include: optical heterodyne method, freq...

AI Technical Summary

Problems solved by technology

In academia, the current solutions to optical oscillators based on multi-core optical fibers inevitably expose the dependence on light sources, multi-core optical fibers with special manufacturing processes, and the multi-ring oscillation circuits with obvious length differences and discrete structures in practical applications. Output photoelectric oscillation signal stability and reconfigurable issues

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