Unlock instant, AI-driven research and patent intelligence for your innovation.
Method for manufacturing fiber bragg grating Fabry-Perot sensor
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A fiber grating and manufacturing method technology, applied in the field of Fabry-Perot sensors, can solve problems such as complicated manufacturing, and achieve the effects of simple manufacturing method, easy implementation, and low cost
Inactive Publication Date: 2011-07-20
BEIJING JIAOTONG UNIV
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The existing fiber grating Fabry-Perot sensor is formed by making two fiber gratings and connecting them in series on the optical fiber. Two fiber gratings need to be made, and the production is relatively cumbersome.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0017] A kind of fabrication method of fiber grating Fabry-Perot sensor, this fabrication method comprises the following steps:
[0018] Step 1, the broadbandlight source 1 is connected to the first port 21 of the circulator, the second port 22 of the circulator is connected to one end of the optical fiber 5 , and the third port 23 of the circulator is connected to the spectrometer 3 .
[0019] Step 2, strip 10 mm of the coating layer of the optical fiber 5 , place the optical fiber at the stripped section of the coating layer close to the phase mask 6 and fix it on the mobile platform 4 . The optical fiber 5 is a single-mode optical fiber. The phase mask 6 adopts a chirped phase mask.
[0020] Step 3, turn on broadband light source 1, spectrometer 3, laser 8 and computer 9;
[0024] A manufacturing method of a fiber grating Fabry-Perot sensor, the difference from Embodiment 1:
[0025] Step 2, stripping 160 mm of the coating layer of the optical fiber 5, and the optical fiber 5 is an active optical fiber.
[0026] Step 4, fabricating a fiber grating on the optical fiber 5 with a length of 140 mm.
[0027] Step five, the heating device 10 is placed above the optical fiber 5 and aligned with the middle of the 140mm section of the fiber grating, and the heating device 10 is started to heat the middle of the fiber grating in this section, and the fiber grating in the middle 10mm of the section is removed. When the spectrometer 3 When two reflection peaks are detected, the heating is stopped, and two fiber gratings of 65mm each constitute a Fabry-Perot sensor. The heating device 10 is an arc heating device.
Embodiment 3
[0029] A manufacturing method of a fiber grating Fabry-Perot sensor, the difference from Embodiment 1:
[0030] Step 2, stripping 80 mm of the coating layer of the optical fiber 5, and the optical fiber 5 is a photonic crystal fiber. The phase mask 6 adopts a uniform phase mask.
[0031] Step 4, fabricating a fiber grating on the optical fiber 5 with a length of 70 mm.
[0032] Step 5, the heating device 10 is placed above the optical fiber 5 and aligned with the middle of the 70mm section of the fiber grating, and the heating device 10 is started to heat the middle of the fiber grating in this section, and the fiber grating in the middle 6mm of the section is removed. When the spectrometer 3 When two reflection peaks are detected, the heating is stopped, and two fiber gratings of 32mm each constitute a Fabry-Perot sensor. The heating device 10 adopts an electric spark heating device.
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 relates to a method for manufacturing a fiber bragg grating Fabry-Perot sensor. The method comprises the following steps of: connecting a broadbandlight source and a first port of a circulator, connecting a second port of the circulator and one end of an optical fiber, and connecting a third port of the circulator and a spectrometer; stripping one section of a coating layer of the optical fiber, attaching the section of optical fiber to a phase mask plate tightly, and arranging and fixing the section of optical fiber on a mobile platform; switching the broadbandlight source, the spectrometer, a laser and a computer on; controlling the laser and a servo motor by using the computer; converging ultravioletlaser light into linear light spots through a cylindrical lens; irradiating the light spots onto the phase mask plate and the optical fiber after the light spots permeate through slits; controlling the mobile platform to move by using the servo motor; manufacturing a section of fiber bragg grating on the optical fiber; heating the middle of the section of fiber bragg grating by using a heating device; clearing the middle fiber bragg grating; stopping heating when the spectrometer monitors two reflection peaks; and forming the Fabry-Perot sensor by using the remaining two sections of fiber bragg gratings. The method is simple and has high manufacturing efficiency.
Description
technical field [0001] The invention relates to a Fabry-Perot sensor based on an optical fiber grating, which is suitable for the technical field of optical fiber sensing. Background technique [0002] Fiber Bragg grating is currently one of the most promising and representative new fiber optic passive devices. Due to its advantages such as low-power transmission, anti-electromagnetic interference, light weight, soft path, chemical stability and electrical insulation, etc., Fiber gratings have broad application prospects in the fields of optical fiber communication, optical fiber sensing and optical information processing. [0003] In recent years, the research on the combination of fiber gratings and other optical fiber interference sensors to form a sensing system has attracted widespread attention. Smart material online detection and analysis. [0004] In the static strain measurementsystem, the fiber optic interference sensor can be used to obtain very high resolution...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More