Coherent light frequency comb based channelized broadband multi-frequency measuring system

A technology of multi-frequency measurement and optical frequency comb, which is applied in the field of optical communication, can solve the problems of impracticality, limitation of measurement sensitivity, and complex equipment, etc., and achieve the realization of radio frequency signal multi-channel broadcasting, large dynamic range and bandwidth, and simple experimental equipment Effect

Inactive Publication Date: 2012-08-15
BEIJING UNIV OF POSTS & TELECOMM
View PDF5 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing research on photon-assisted microwave frequency measurement systems mostly focuses on single-frequency point microwave frequency measurement [1, 2], which is difficult to meet the requirements of modern radio frequency measurement
The frequency measurement of multi-frequency radio frequency signals has also been studied [6, 7], bu...

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coherent light frequency comb based channelized broadband multi-frequency measuring system
  • Coherent light frequency comb based channelized broadband multi-frequency measuring system
  • Coherent light frequency comb based channelized broadband multi-frequency measuring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 4 and 5As shown, it is an experimental schematic diagram of a channelized broadband multi-frequency measurement system based on a coherent optical frequency comb, including: a seed light source generation module, a signal optical frequency comb signal OFC (Optical Frequency combs), a local oscillator optical frequency comb Local OFC, the first Mach Zehnder modulator MZM (Mach-Zehnder Modulator) and coherent receiving module.

[0040] The seed light source generation module is respectively connected to the signal light frequency comb and the local oscillator frequency comb, and is used to transmit the generated signal light and local oscillator light to the signal light frequency comb and the local oscillator frequency comb respectively. Such as Figure 5 As shown, the seed light source generation module includes: a sequentially connected laser source CW, a second Mach-Zehnder modulator MZM', a first erbium-doped fiber amplifier EDFA1 (Erbium Doped Fibe...

Embodiment 2

[0061] Such as Figure 6 As shown, the channelized broadband multi-frequency measurement system based on the coherent optical frequency comb in this embodiment has basically the same structure as the channelized broadband multi-frequency measurement system based on the coherent optical frequency comb in Embodiment 1, the difference is the coherent receiving module, The coherent receiving module of this embodiment includes: two demultiplexers De-mux1 and De-mux2, a digital signal processor DSP and several radio frequency channel modules. The demultiplexer De-mux1 is connected to the first Mach-Zehnder modulator MZM, and the demultiplexer De-mux2 is connected to the EDFA2 of the local oscillator optical frequency comb. Each demultiplexer is connected to several radio frequency channel modules, and several radio frequency channel modules Both are connected to DSP.

[0062] Among them, each radio frequency channel module includes: polarization beam combiner PBC (Polarization Beam...

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

No PUM Login to view more

Abstract

The invention discloses a coherent light frequency comb based channelized broadband multi-frequency measuring system, which relates to the field of optical communication technology and comprises a seed light source generation module, a signal light frequency comb, a vibration light frequency comb, a first Mach-Zehnder modulator and a coherent receiving module. The seed light source generating module is respectively connected with the signal light frequency comb and the vibration light frequency comb and used for transmitting generated signal light and vibration light to the signal light frequency comb and the vibration light frequency comb respectively, the signal light frequency comb is connected with the first Mach-Zehnder modulator, the first Mach-Zehnder modulator is connected with the coherent receiving module, and the vibration light frequency comb is connected with the coherent receiving module. The coherent light frequency comb based channelized broadband multi-frequency measuring system has the advantages of high flexibility, low amplifying noise and high accuracy, can measure multi-frequency-point radio frequency signals in a real-time, parallel and broadband manner. Besides, testing equipment is simple and cost is low.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a channelized broadband multi-frequency measurement system based on a coherent optical frequency comb. Background technique [0002] RF frequency measurement is the process of receiving RF signals, analyzing and processing the RF signals, and is an important part of the RF system. It has important applications in military and civilian communications, especially in electronic countermeasures technology. figure 1 A typical application block diagram of instantaneous RF frequency measurement in electronic countermeasures is shown. It can be seen from the figure that the instantaneous frequency measurement receiver mainly provides emission control signals for electronic jammers. In practical applications, for broadband electronic interference, only the instantaneous frequency measurement receiver is required to provide rough frequency information. In this case, the req...

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
no application Login to view more
IPC IPC(8): H04B10/08H04B10/17H04B10/079
Inventor 戴一堂谢小军闫励王瑞鑫徐坤李岩伍剑林金桐
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap