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Microwave signal long distance optical fiber stationary phase transmission device based on optical phase conjugation

A technology of optical phase conjugation and long-distance optical fiber, which is applied in the field of microwave photonics, can solve problems such as high cost and complex system, and achieve the effects of increasing bandwidth, reducing the use of mixers, and reducing construction and maintenance costs

Active Publication Date: 2014-12-10
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, the passive control method usually requires multiple mixers, electrical filters and multiple phase-synchronized microwave sources, the system is complex and the cost is high

Method used

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  • Microwave signal long distance optical fiber stationary phase transmission device based on optical phase conjugation
  • Microwave signal long distance optical fiber stationary phase transmission device based on optical phase conjugation

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Embodiment Construction

[0027] see figure 1 As shown, the present invention provides a schematic structural diagram of a microwave signal long-distance optical fiber phase-stable transmission device based on optical phase conjugation, the system includes: a sending end A, a receiving end B and a single-mode optical fiber 10, the The sending end A is connected to the receiving end B through a single-mode optical fiber 10, wherein:

[0028] The sending end A includes:

[0029] A microwave signal source 1, the microwave signal source 1 is a vector network analyzer or a microwave signal source, which is used to generate a local oscillator microwave signal, which is a signal that needs to be transmitted;

[0030] A frequency divider 2, its input end is connected with the output end of microwave signal source 1, is used for the frequency and initial phase of described local oscillator microwave signal become original half;

[0031] A first phase conjugation unit 3, whose input terminal is connected to th...

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Abstract

Disclosed is a microwave signal long distance optical fiber stationary phase transmission device based on optical phase conjugation. The microwave signal long distance optical fiber stationary phase transmission device based on the optical phase conjugation comprises an emitting end, a receiving end and a single mode optical fiber, wherein the emitting end is connected with the receiving end through the single mode optical fiber. The microwave signal long distance optical fiber stationary phase transmission device based on the optical phase conjugation only processes a signal at the emitting end, is low in construction and maintenance cost, reduces usage frequency of a frequency mixer, performs pre-distortion of a microwave signal mainly on light, improves the bandwidth of a system, only uses a microwave source, and does not need synchronization.

Description

technical field [0001] The invention relates to a system for phase-stable transmission of microwave signals through optical fibers, in particular to a long-distance optical fiber phase-stable transmission device for microwave signals based on optical phase conjugation, which belongs to the technical field of microwave photonics. Background technique [0002] In the fields of distributed synthetic aperture radar, deep space exploration, atomic clock distribution, global navigation satellite system and other fields, the phase-stable transmission technology of microwave signals is required. Traditional microwave signal transmission uses coaxial cables for phase-stable transmission, but the cables are large in loss, bulky, and costly, making it difficult to achieve long-distance transmission. Optical fiber is considered to be very suitable for the transmission of microwave signals, especially for long-distance transmission, due to its advantages of low loss, large bandwidth, ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2507
Inventor 李伟王玮钰孙文惠王文亭刘建国祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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