Microwave photon filter of multi-wavelength light source and tuning and reconfiguring method of microwave photon filter

Abstract

The invention discloses a microwave photon filter of a multi-wavelength light source and a tuning and reconfiguring method of the microwave photon filter. The microwave photon filter of the multi-wavelength light source comprises a multi-wavelength light source generator and a microwave filter device. The microwave filter device comprises a phase modulator, an adjustable dispersion compensator, a first erbium-doped optical fiber amplifier, a photoelectric detector and a vector network analyzer. A comb-shaped optical fiber of the multi-wavelength light source generator is a programmable optical filter. By observing response curve of the network analyzer, dispersion value of the adjustable dispersion compensator is adjusted, time delay between adjacent optical wavelengths of adjacent multi-wavelength light is changed continuously, and central continuous tuning of the microwave photon filter can be realized. The number of comb-shaped pass bands is set by the programmable optical filter to change the number of emitting wavelengths, and adjustment of the bandwidth of the microwave photon filter is realized. Tunable capacity and reconfigurability of the microwave photon filter are realized, and the microwave photon filter can be more flexibly used for the microwave signal processing system.

Description

technical field [0001] The invention relates to a microwave photon filter of a multi-wavelength light source and a tuning and reconstruction method thereof. Background technique [0002] Microwave photonic filter is an important branch of microwave photonics, which is an optical system that uses optical methods to filter microwave signals. Optical-based methods to process microwave signals can take advantage of the inherent advantages of optical devices such as light weight, small size, low loss, wide bandwidth, and anti-electromagnetic interference. In addition, photon-based microwave filters have excellent characteristics such as good tunability and reconfigurability that are not easy to achieve in electronic microwave filters, and can overcome electronic bottlenecks. In recent years, with the rapid development of microwave photonic filters, they are widely used in microwave filtering, photon mixing, and instantaneous microwave frequency measurement. From the perspective...

AI Technical Summary

Problems solved by technology

However, limited by factors such as the number of taps, wavelength interval, and dispersive medium, microwave photonic filters based on multiple light sources have certain deficiencies in terms of tunability and reconfigurability.

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