A broadband radio frequency signal optical fiber phase stable transmission system device
A radio frequency signal, stable phase transmission technology, applied in the field of microwave photonics, can solve the problem of high requirements for electronic devices, and achieve the effect of simple system structure, strong practicability, and easy realization
Active Publication Date: 2022-08-05
ZHEJIANG UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] In order to describe the present invention more specifically, the technical solutions of the present invention are described in detail below in conjunction with the accompanying drawings:
[0028] like figure 1 As shown, it is the device diagram of the broadband radio frequency signal optical fiber phase stable transmission system device of the present invention, including the local end and the remote end connected by the dispersion compensation module 101 and the optical fiber 102, wherein:
[0029] The local end includes a first electro-optical modulation module 103, an optical filter 104, an optical isolator 105, a first wavelength division multiplexer 106, and a Faraday rotating mirror 107;
[0030] The remote end includes first to third electrical filters 108 to 110, first to third electrical amplifiers 111 to 113, first photodetector 114, second photodetector 115, second electro-optic modulation module 116, Two wavelength division multiplexer 117 , electrical spl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a broadband radio frequency signal optical fiber phase stabilization method and system, comprising a local end and a remote end connected by a dispersion compensation module and an optical fiber. At the local end, an auxiliary signal I whose frequency is half of the frequency of the signal to be transmitted and an auxiliary signal II whose frequency is 1.5 times the frequency of the signal to be transmitted are modulated and filtered by the optical carrier, and then the corresponding signal containing only the optical carrier, the signal I and the signal II is obtained. The optical signal of the first-order upper sideband is transmitted to the remote end, and the corresponding signal I and signal II are demodulated. After the signal I is modulated by the optical carrier of another wavelength, it is transmitted to the local end and then reflected by the optical mirror. It is reflected back to the far end, and then the corresponding signal I is filtered out. Finally, the signal I and the signal II at the far end are mixed at the far end to obtain a stable signal to be transmitted. The system of the invention has a simple structure, is more practical, and is easy to implement.
Description
technical field [0001] The invention belongs to the technical field of microwave photonics, and in particular relates to a broadband radio frequency signal optical fiber phase stabilization method and system. Background technique [0002] The transmission methods of radio frequency signals are mainly divided into wired transmission and wireless transmission based on cables, overhead open wires, and optical fibers. Among them, wired transmission methods such as cables are bulky, expensive, and have serious transmission attenuation, which is not conducive to long-distance transmission of signals; wireless transmission methods are highly susceptible to external electromagnetic and environmental interference. Optical fiber has the characteristics of low loss, light weight and strong anti-electromagnetic interference ability. Using optical fiber to transmit RF signals has the advantages of long distance, high stability and low loss that other transmission methods cannot achieve. ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2525H04B10/516H04B10/548H04J14/02
CPCH04B10/2525H04B10/5165H04B10/548H04J14/0202
Inventor 金晓峰许瑶琦邱纪琛孙小欢余显斌金向东谢银芳
Owner ZHEJIANG UNIV