Multi-frequency microwave signal photon instantaneous frequency measuring device with super-wide frequency range

A microwave signal, frequency range technology, applied in the field of microwave photonics

Inactive Publication Date: 2013-12-11
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the current microwave photon frequency measurement method solves the electronic bottleneck, it also faces many challenges. The influence of the microwave photon link performance on the frequency measurement capability, especially the performance of sensitivity, dynamic range and multi-frequency measurement needs to be further improved.

Method used

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  • Multi-frequency microwave signal photon instantaneous frequency measuring device with super-wide frequency range
  • Multi-frequency microwave signal photon instantaneous frequency measuring device with super-wide frequency range
  • Multi-frequency microwave signal photon instantaneous frequency measuring device with super-wide frequency range

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Embodiment 1

[0026] This embodiment is the case of two frequency signals to be measured, assuming that its frequency is f x1 =1GHz and f x2 =25GHz, select SantecTSL-510 tunable laser, set the wavelength to 1550nm (the corresponding frequency is f c =193.41THz) as the optical carrier; 1×2 single-mode fiber coupler (model ZG-A201) splits the upper and lower branches at a ratio of 1:1; the phase modulator is MPZ-LN-40 from Photline, Its bandwidth is 38GHz; the frequency range of the network analyzer is 40M ~ 40GHz; the detection bandwidth of the photodetector is 40GHz; the Brillouin gain linewidth of the highly nonlinear fiber is Γ B =30MHz, stimulated Brillouin frequency shift f B =9.2GHz, the length is 1000 meters, the peak value of gain and loss is 5dB; the first dual-parallel MZ modulator 1 and the second dual-parallel MZ modulator 2 are MXIQ-LN-40 of Photline Company, and their bandwidths are both 20GHz; The modulator is Photline's MXAN-LN-20 with a bandwidth of 20GHz. The DC bias vo...

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Abstract

The invention discloses a multi-frequency microwave signal photon instantaneous frequency measuring device with a super-wide frequency range, and belongs to the technical field of microwave photonics. The multi-frequency microwave signal photon instantaneous frequency measuring device with the super-wide frequency range comprises a laser, a coupler, a phase modulator, a polarization controller, a highly nonlinear optical fiber, a circulator, a first double-parallel MZ modulator, a second double-parallel MZ modulator, an intensity modulator, a microwave coupler, a photoelectric detector and a network analysis instrument. First-order upper side band signals output by the phase modulator are strengthened or weakened through the stimulated Brillouin scattering effect of the highly nonlinear optical fiber, the intensity balance of the first-order upper side band and the first-order lower side band of the output signals of the phase modulator is broken, and therefore instantaneous frequency measurement of multi-frequency microwave signals to be measured is achieved.

Description

technical field [0001] The invention belongs to the technical field of microwave photonics, and in particular relates to a photon instantaneous frequency measuring device for multi-frequency microwave signals in an ultra-wide frequency range based on highly nonlinear optical fiber stimulated Brillouin scattering effect. Background technique [0002] Instantaneous frequency measurement is a key technology in modern electronic warfare. For enemy detection, interference, countermeasures and information capture, it is necessary to first detect the opponent's electromagnetic radiation information. Instantaneous frequency measurement can provide the threat classification of the input signal initially detected, and can quickly locate the frequency band of the unknown signal to assist in identifying the type, quantity and other important information of the enemy's electronic equipment, which is conducive to taking a reasonable attack or response measure. [0003] The performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 董玮陈维友张歆东刘彩霞阮圣平肖永川
Owner JILIN UNIV
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