Single-response microwave photonic filter-based frequency measurement device and measurement method

A microwave photon and frequency measurement technology, applied in measurement devices, measuring electrical variables, instruments, etc., can solve the problems of easy electromagnetic interference by the enemy, heavy weight, complex structure, etc., and is suitable for long-distance measurement, large bandwidth, The effect of reducing the cost and complexity of measurements

Active Publication Date: 2012-08-15
XIAMEN UNIV
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Problems solved by technology

[0003] Microwave frequency measurement using electrical methods is difficult to achieve high-frequency signal frequency measurement due to the limitation of

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  • Single-response microwave photonic filter-based frequency measurement device and measurement method
  • Single-response microwave photonic filter-based frequency measurement device and measurement method

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Embodiment Construction

[0018] Such as figure 1 As shown, the embodiment of the frequency measurement device based on the single-response microwave photonic filter is provided with a broadband light source 1, a Mach-Zehnder fiber interferometer, an electro-optical modulator 5, a fiber amplifier 7, a microwave antenna 6, a dispersion fiber 8, a photoelectric Detector 9 and electric power meter 10. The broadband light source 1 is connected to the input port of the Mach-Zehnder fiber interferometer, the output port of the Mach-Zehnder fiber interferometer is connected to the input port of the electro-optic modulator 5, and the output port of the electro-optic modulator 5 is connected to the fiber amplifier 7. The input port is connected, the electric drive port of the electro-optic modulator 5 is electrically connected with the microwave antenna 6, the output port of the optical fiber amplifier 7 is connected with one end of the dispersion fiber 8, and the other end of the dispersion fiber 8 is opticall...

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Abstract

The invention discloses a single-response microwave photonic filter-based frequency measurement device and a measurement method, and relates to a frequency measurement device and method. The frequency measurement device is provided with a broadband light source, a Mach-Zehnder fiber optic interferometer, an electro-optical modulator, an optical fiber amplifier, a microwave antenna, a dispersion optical fiber, a photo detector and an electrodynamic meter. A tunable single-response microwave photonic filter can be realized by using a structure based on combined Mach-Zehnder fiber optic interferometer spectral division and dispersion optical fiber; the transmission peak frequency position of the single-response microwave photonic filter is adjusted by scanning an adjustable delay line of the optical fiber; and the detection of the frequency of a measured microwave signal is realized by restoring measurement of electric signal power through the photo detector. The microwave electronic filter has an incoherent filter structure; and meanwhile, the detection of a multi-frequency microwave signal is realized through quick length scanning of the adjustable delay line. Remote high-frequency microwave signal frequency measurement of electromagnetic interference can be realized.

Description

technical field [0001] The invention relates to a frequency measurement device and method, in particular to a frequency measurement device and a measurement method based on a single-response microwave photon filter. Background technique [0002] Microwave frequency measurement is one of the key technologies of microwave detection. It has very important applications in electronic jamming and anti-jamming of radar communication systems in the future. It is of great significance to develop methods for measuring the frequency of high-frequency microwave signals and multi-frequency microwave signals. [0003] Microwave frequency measurement using electrical methods is difficult to achieve high-frequency signal frequency measurement due to the limitation of its "electronic bottleneck", and has disadvantages such as complex structure, large volume, heavy weight, and easy electromagnetic interference by the enemy. Using optical methods to detect the frequency of microwave signals ha...

Claims

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Application Information

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IPC IPC(8): G01R23/165
Inventor 付宏燕徐作为叶陈春张成
Owner XIAMEN UNIV
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