Optical fiber sensing device for optical fiber chaos laser device and method thereof

A chaotic laser and optical fiber sensing technology, which is applied in the field of optical fiber sensing devices, chaotic optical fiber sensing devices, and chaotic lasers, can solve the problems of increasing the cost and complexity of fiber gratings, and achieve the effect of reducing costs

Inactive Publication Date: 2012-06-20
TAIYUAN UNIV OF TECH
View PDF19 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a broadband light source, utilizing the changes in the reflection spectrum and transmission spectrum of the fiber grating and signal processing to realize fiber optic sensing, usually placing fiber gratings with different

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
  • Optical fiber sensing device for optical fiber chaos laser device and method thereof
  • Optical fiber sensing device for optical fiber chaos laser device and method thereof
  • Optical fiber sensing device for optical fiber chaos laser device and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The specific implementation of the present invention will be further described below:

[0021] The device for implementing the fiber chaotic laser for fiber sensing provided by the present invention includes a wavelength swept fiber chaotic laser, a wavelength swept filter, a fiber coupler, a fiber grating for sensing, an optical circulator, Photodetector and data processing system, including:

[0022] After the chaotic light emitted by the wavelength sweep filter 7 in the optical fiber chaotic laser enters the optical fiber coupler II 9, it enters the data processing system 17 through the photodetector 15; and enters the optical fiber sensing system through the optical circulator 10. The reflection enters the photodetector 16 and the data processing system 17 through the optical circulator 10;

[0023] In the specific implementation of the present invention, the fiber chaotic laser used is a wavelength swept fiber ring cavity laser, or one of a linear cavity laser and a figu...

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 relates to an optical fiber sensing device for an optical fiber chaos laser device and a method thereof. The device comprises the optical fiber chaos laser device, a data processing system and an optical fiber sensing system. After chaos light emitted by a wavelength frequency-sweeping filter in the optical fiber chaos laser device enters into an optical fiber coupler, one path of the chaos light enters into the data processing system through a photoelectric detector, the other path of the chaos light enters into the optical fiber sensing system through a light circling device, is reflected back to the light circling device and enters into the photoelectric detector and the data processing system, and then the two paths of data signals are combined through a correlation method and a fiber grating sensor, thereby performing the temperature and pressure measurement and the network monitoring. In the invention, an optical fiber laser device is combined with the fiber grating sensor, a sensing information position of a detecting point is confirmed according to the wavelength frequency sweeping and the chaos related characteristics, and the chaos pulse wavelength frequency sweeping is utilized to realize the accurate measurement for the pressure or temperature of the position of the fiber grating.

Description

Technical field [0001] The invention relates to a chaotic optical fiber sensing device and a method thereof, in particular to a chaotic laser using a wavelength swept frequency generated by a fiber laser for an optical fiber sensing device and a method thereof, which can be used for temperature and pressure sensing measurement and network monitoring And other fields. Background technique [0002] Optical fiber sensing uses optical fiber or fiber grating as the sensing device. Optical fiber sensors are widely used in temperature, pressure, environmental pollution and other fields (EP 2 136 227 A1, US2011 / 0190640, US7684656 B2). Compared with traditional electric sensors, optical fiber sensors have obvious technical advantages such as anti-electromagnetic interference, electrical insulation, corrosion resistance, sensitivity, high weight, light weight, small size, and variable appearance. Optical fiber sensors are easy to reuse and network with the same transmission fiber. The mul...

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): G01D5/353
Inventor 杨玲珍冯亚强朱林彦
Owner TAIYUAN UNIV OF TECH
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