Microwave photon phase shifter based on dual-polarization modulator

A microwave photonic and polarization controller technology, applied in optics, instruments, waveguide devices, etc., can solve the problems of complex external signal processing, complex device structure, etc., and achieve the effect of overcoming electromagnetic interference, overcoming bandwidth limitations, and improving performance

Inactive Publication Date: 2017-03-01
XIDIAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Its disadvantage is that the realization of sideband modulation requires a more complex device structure or complex external processing of the signal

Method used

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  • Microwave photon phase shifter based on dual-polarization modulator
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  • Microwave photon phase shifter based on dual-polarization modulator

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Embodiment Construction

[0018] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following The described embodiment:

[0019] figure 1 Schematic diagram of implementing a microwave photonic phase shifter based on a dual polarization modulator for the present invention. The dual polarization modulator modulates the microwave signal to generate a polarization multiplexed double sideband signal; the optical bandpass filter is used to remove a sideband to generate a polarization multiplexed single sideband signal; the polarizer is used to realize the signal Polarization state merging, the polarization controller is used to control the merging direction of the two polarization states, and...

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Abstract

The invention discloses a microwave photon phase shifter based on a dual-polarization modulator and relates to the technical fields of microwaves and optical communication. The microwave photon phase shifter is mainly applied to microwave photon signal processing. The microwave photon phase shifter is shown in attached drawings and comprises a tunable laser source, a radio frequency signal source, a dual-polarization modulator, an optical band pass filter, a polarization controller, a polarizer and a photoelectric detector. The dual-polarization modulator is composed of Y branching units, upper and lower parallel Mach-Zehnder modulators MZM1 and MZM2 and a polarization beam combiner. According to the scheme, single side band modulation is achieved by utilizing the dual-polarization modulator and the optical band pass filter, the phase difference between optical carrier waves and side bands is changed by combining with the polarization controller and the polarizer, and accordingly dephased microwave signals are obtained after frequency beating of the photoelectric detector. 360-degree continuous phase shift of the microwave signals can be achieved, and the amplitude can be kept unchanged. In addition, the microwave photon phase shifter has the advantages of being simple in structure, easy to operate, wide in band width and the like.

Description

technical field [0001] The invention relates to the technical fields of optical communication and microwave technology, and mainly relates to a method for realizing a microwave photon phase shifter based on a dual polarization modulator in the optical communication technology. Background technique [0002] There are serious electronic bottlenecks in the generation, transmission and processing of traditional high-frequency millimeter wave signals. The generation, transmission and processing of millimeter wave signals by means of optical methods has gradually become one of the research hotspots in various countries. Among them, microwave phase shifting, as a key technology in microwave signal processing, has important application value in the fields of phased array radar, satellite communication, mobile communication, electronic countermeasures and aerospace. Traditional microwave phase shifters are mainly electrical phase shifters, which are limited by small frequency band, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/03H01P1/18
CPCG02F1/03H01P1/18
Inventor 彭铮雪文爱军高永胜商硕林林
Owner XIDIAN UNIV
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