A radio frequency signal sensing device based on photoelectric oscillator

Abstract

The present invention discloses a radio-frequency signal perception device based on a photoelectric oscillator. The device comprises a laser source, a polarization controller, a Mach-Zehnder modulator, an electromagnetic field sensor, an optical fiber coupler, an adjustable radio frequency band-pass filter, a radio-frequency amplifier, an optical filter, an intermediate-frequency band-pass filterand two photoelectric detectors; the laser source, the polarization controller, the Mach-Zehnder modulator, the electromagnetic field sensor and the photoelectric detectors are connected through optical fibers; radio frequency input ports of the photoelectric detectors, the optical fiber coupler, the adjustable radio frequency band-pass filter, the radio-frequency amplifier and the Mach-Zehnder modulator are connected in order; and one output of the optical fiber coupler, the optical fiber, the photoelectric detectors and the intermediate-frequency band-pass filter are connected in order. Theradio-frequency signal perception device achieves intermediate-frequency receiving of the high-frequency broadband electromagnetic field, reduce the cost of receiving the high-frequency device, does not need an external local oscillator, and is simple in electromagnetic sensor structure and good in radio-frequency signals to be received and the isolation of the local oscillator.

Description

technical field [0001] The invention belongs to the technical field of optoelectronics, and in particular relates to a radio frequency signal sensing device based on a photoelectric oscillator. Background technique [0002] With the urgent need for high-speed communication, high-frequency and broadband spectrum resources are fully utilized, and the signal frequency bands carrying various information cover a wide range and complex signal parameters. The highly dense and complex signal environment requires the receiver of electronic equipment to have large receiving bandwidth, large dynamic range, high efficiency, high resolution, and the ability to receive and process multi-frequency and multi-form signals in a unified manner. Traditional electrical receivers face the shortcomings of narrow bandwidth and large link loss, and their ability to receive and process high-frequency broadband signals has been greatly limited. [0003] Photonics technology has the advantages of high...

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Problems solved by technology

Such as the literature "J.Zhang, F.Chen, and B.Sun,"Integrated Optical E-Field Sensor for IntenseNanosecond Electromagnetic Pulse Measurement"IEEE Photon.Technol.Lett.vol.26, no.3, pp.275-277. Jan, 2014.2. and T.Meier, C.Kostrzewa, K.Petermann and B.Schuppert, "Integrated optical E-field probes with segmented modulator electrodes" IEEE J.Lightw.Technol.vol.12, no.8, pp. The technical scheme proposed in 1497-1503,1994", in which the integrated optical electric field sensor is based on the Mach-Zehnder waveguide structure, and its bias point is prone to drift due to changes in the surrounding environment such as temperature and humidity, resulting in modulation efficiency and dynamic range changes, eventually leading to fluctuations in the power of the IF signal

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