Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fiber optic acoustic wave sensor, manufacturing method and fiber optic acoustic wave sensing system

An acoustic wave sensor and optical fiber technology, applied in the field of sensing, can solve the problems of zero point drift of detection results, affect the stability of the sensor, change, etc., achieve the effect of good narrowband filtering characteristics, suppress the phenomenon of zero point drift, and improve stability

Active Publication Date: 2022-07-29
ZHEJIANG UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fiber optic acoustic wave sensor based on the Fabry-Perot interference cavity has the following problems: the Fabry-Perot interference spectrum is easily changed by the influence of the ambient temperature, which makes the detection result drift at zero point and affects the stability of the sensor

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
  • Fiber optic acoustic wave sensor, manufacturing method and fiber optic acoustic wave sensing system
  • Fiber optic acoustic wave sensor, manufacturing method and fiber optic acoustic wave sensing system
  • Fiber optic acoustic wave sensor, manufacturing method and fiber optic acoustic wave sensing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] It should be noted that when an element is referred to as being "connected" to another element or an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0048] The terms "first", "second", etc. in the description and claims of the embodiments of the present application and the above drawings are used to distinguish simil...

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

PropertyMeasurementUnit
lengthaaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an optical fiber acoustic wave sensor, which relates to the field of sensing technology, comprising a first single-mode optical fiber, a single-mode photothermal optical fiber with a cladding removed, and a second single-mode optical fiber; a fiber Bragg grating, a second fiber Bragg grating is engraved on the second single-mode fiber; the first fiber Bragg grating and the second fiber Bragg grating form a Fabry-Perot interference cavity; the first fiber Bragg grating The reflection peak wavelengths of the first fiber Bragg grating and the second fiber Bragg grating do not fall within the absorption band of the single-mode photothermal fiber. The technical solution provided by the present invention can suppress the zero-point drift phenomenon. At the same time, the invention also provides a manufacturing method of the optical fiber acoustic wave sensor and an optical fiber acoustic wave sensing system.

Description

technical field [0001] Embodiments of the present invention relate to the field of sensing technology, and in particular, to an optical fiber acoustic wave sensor, a manufacturing method, and an optical fiber acoustic wave sensing system. Background technique [0002] With the development of sensing technology, the application of optical fiber sensor is more and more extensive. Optical fiber acoustic wave sensor is the application of optical fiber sensor in the field of acoustic wave detection. Applications in speculum and photoacoustic imaging are promising. [0003] At present, there are many implementation schemes for fiber-optic acoustic wave sensors. Among them, the fiber-optic acoustic wave sensor based on Fabry-Perot (F-P, Fabry-Perot) interference cavity has become a current research hotspot due to its advantages of easy signal demodulation and high sensitivity. However, the optical fiber acoustic wave sensor based on the Fabry-Perot interference cavity has the fol...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00G01D5/353
CPCG01H9/004G01D5/35312G01D5/35316G01D5/3538G01D5/35387
Inventor 吴胜楠何赛灵谢柳佳林华冠
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com