Reconfigurable single-band-pass microwave photon filtering system and method

A microwave photon filtering and single-bandpass technology, which is applied in optics, nonlinear optics, instruments, etc., can solve problems such as complex system structure, low filtering resolution, and difficult reconstruction, so as to reduce complexity, suppress noise, The effect of easy operation

Active Publication Date: 2013-09-25
DALIAN UNIV OF TECH
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Problems solved by technology

[0007] The present invention provides a reconfigurable single-bandpass microwave photonic filtering system and method, which effectively solves the problems of low filtering resolution, difficult reconstruction, complex system structure and the like in the background technology.

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  • Reconfigurable single-band-pass microwave photon filtering system and method
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  • Reconfigurable single-band-pass microwave photon filtering system and method

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Embodiment

[0053] figure 1 It is a schematic diagram of the reconfigurable single-bandpass microwave photon filtering system of the present invention. The light wave emitted by the laser 1 is divided into two paths by the optical splitter 2; the wide-spectrum microwave signal to be processed is modulated onto the first branch light wave by the electro-optic phase modulator 3, and passed through the optical isolator 4 and the first polarization controller 5 Enter the highly nonlinear medium 6; the microwave signal sent by the pump microwave source 7 is modulated by the electro-optic intensity modulator 8 to the second branch light wave, and after passing through the optical amplifier 9 and the second polarization controller 10, it is output by the optical circulator 11 and enters the Highly nonlinear medium 6; in the highly nonlinear medium 6, the sidebands of the optically loaded broadband microwave signal to be processed and the sidebands of the optically loaded pump microwave signal un...

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Abstract

The invention discloses a reconfigurable single-band-pass microwave photon filtering system and method and belongs to the technical field of microwave photons. A device comprises a laser, an optical divider, an electro-optic phase modulator, an optical isolator, a first polarization controller, a high-nonlinearity medium, a pumping microwave source, an electro-optic intensity modulator, an optical amplifier, a second polarization controller, an optical circulator and a photoelectric detector. According to the microwave photon filtering system, single-band-pass photon filtering is conducted by utilizing a stimulated brillouin scattering effect in the high-nonlinearity medium, and a function of filtering reconfiguration is achieved by controlling the frequency spectrum of pumping microwave. The system and method solves the problem that the existing periodical microwave photon filtering system is limited in filtering range and the filtering waveform is not easy to reconfigure, and has the advantages of being high in stability and convenient to operate.

Description

technical field [0001] The invention belongs to the field of microwave photon technology, and in particular relates to a reconfigurable single-bandpass microwave photon filtering system and method. Background technique [0002] Filter is an important functional unit of microwave signal processing. Compared with traditional electrical filters, microwave photonic filters have the advantages of low loss, large bandwidth, and anti-electromagnetic interference. It has broad application prospects in the fields of control array antenna and intelligent transportation system. [0003] Microwave photonic filters have single-bandpass and reconfigurable functions to meet the selection of dynamically changing microwave channels. This is an urgent problem to be solved in the application of microwave photonic filtering technology, and has long been of great concern to researchers. [0004] In the prior art [1] (Xiaoke Yi, R.A. Minasian. "Microwave photonic filter with single bandpass resp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/365
Inventor 韩秀友王丽娜赵明山谷一英
Owner DALIAN UNIV OF TECH
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