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Radio frequency photon filter with switchable pass-stop band

A photonic filter and radio frequency technology, applied in the field of radio frequency photonics, can solve the problems of high cost, a large number of bandpass and bandstop filters, filter noise interference, etc.

Inactive Publication Date: 2020-01-07
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although various band-pass or band-stop RF signal filters with independent functions have been developed by electrical methods, the filter noise interference is becoming more and more serious with the increase of the frequency of the RF signal, and each node of the system is more sensitive to multiplexing. Channel signals are filtered, requiring a large number of band-pass and band-stop filters, resulting in huge costs

Method used

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  • Radio frequency photon filter with switchable pass-stop band

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] Such as figure 1 , a radio-frequency photonic filter with switchable pass-stop band, comprising: a distributed feedback Bragg laser 1, a first optical polarization controller 21, a second optical polarization controller 22, an optical phase modulator 3, and a 1×2 optical coupler 4. Optical isolator 5, optical phase shift regulator 6, single-mode optical fiber 7, optical circulator 8, optical intensity modulator 9, radio frequency signal generator 10, erbium-doped fiber amplifier 11, optical bandpass filter 12, photoelectric A detector 13 and an optical network analyzer 14 . The connection of each device is as follows:

[0012] The output port of the distributed feedback Bragg laser 1 is connected to the input port of the first optical polarization controller 21, and the output port of the first optical polarization controller 21 is connected to the optical inp...

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Abstract

The invention discloses a radio frequency photon filter with a switchable pass-stop band, and is suitable for the field of radio frequency photons. The device comprises a device; a distributed feedback Bragg laser (1), a first light polarization controller (21), a second light polarization controller (22), an optical phase modulator (3), a 1*2 optical coupler (4), an optical isolator (5), a single-mode fiber (6), an optical circulator (7), a light intensity modulator (9), a radio-frequency signal generator (10), an erbium-doped fiber amplifier (11), an optical band pass filter (12), a photoelectric detector (13) and an optical network analyzer (14).

Description

technical field [0001] The invention relates to the field of radio frequency photons, in particular to a radio frequency photon filter with a switchable pass-stop band. Background technique [0002] The demand for high-speed and large-capacity radio frequency signals in sonar, radar, mobile communication, data image and other fields is increasing day by day. It is getting more and more difficult, high-performance RF signal filter is the key to restrict the development of related fields related to RF signal extraction. Although various band-pass or band-stop RF signal filters with independent functions have been developed by electrical methods, the filter noise interference is becoming more and more serious with the increase of the frequency of the RF signal, and each node of the system is more sensitive to multiplexing. Channel signals are filtered, requiring a large number of band-pass and band-stop filters, resulting in huge costs. Photonics has low noise, large capacity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/00G02F1/39H01S3/30
CPCG02F1/395H01S3/302H01S5/0085
Inventor 董小伟
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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