Structures and Applications of Fiber Bragg Grating Sensors
Ⅰ. Learn about fiber Bragg grating sensors
Fiber Bragg grating sensor can be used as a kind of fiber sensor. Like the optical fiber sensor, it has many irreplaceable advantages compared with the traditional electric sensor, such as: no electromagnetic interference, lightweight, small size, no corrosion, etc. Fiber Bragg grating sensorsare commonly used in structural deformation and temperature monitoring. Short-period fiber grating sensors are commonly used, and their reflection wavelengths are called Bragg wavelengths. Such sensors are called FBG sensors.
Fiber Bragg grating sensor is a kind of fiber sensor with the highest frequency and the widest range, which includes FBG strain sensor, FBG temperature sensor, fiber Bragg grating pressure sensor, etc. This sensor can change the wavelength of the reflected light wave according to the environmental temperature and changes. Fiber bragg grating sensors use holographic interferometry or phase masking to expose a small section of light-sensitive optical fiber to light waves with a periodic distribution of light intensity. In this way, the optical refractive index of the optical fiber will be permanently changed according to the intensity of the irradiated light wave. The periodic changes in the refractive index of light caused by this method are called fiber Bragg gratings.
Ⅱ. The structure of fiber Bragg grating sensors
The structure of the fiber Bragg grating sensor is to use an ultraviolet laser to write a section of grating on the fiber core. When the continuous broadband light Li emitted by the light source enters through the transmission fiber, a narrowband light Lr is selectively reflected back at the grating, and the remaining broadband light Lt continues to pass through, and is reflected at the next grating with different center wavelengths. The grating array forms a fiber Bragg grating (FBG) sensor network. The center wavelength of the reflected light of each FBG is λ, λ=2nΛ, where n is the effective refractive index of the core; Λ is the modulation period of the core refractive index.
Ⅲ. Application of fiber Bragg grating sensors
For more info about fbg sensor applicationor buy optical communications products, please contact us.
If you need any kinds of fiber optic products,please contact us, as a professional optic connector supplier, T&S is willing to offer you high quality products.
Send product request
Other supplier products
 |
PLC SPLITTER | PLC SPLITTER As a professional plc splitter manufacturer, T & S Communication produces a planar optical waveguide chip on its own and manufactu... |
 |
Grade B Patch Cord Connector | T&S grade B patch cord connectoris the patchcordwith the random mating performance of Grade B as IEC-61753-1 defined, more than 97% of maximum ... |
 |
BAND SEPARATOR WDM DEVICE | T&S BWDM 3 Ports Device is a kind of FWDM device that can separate C-band and L-band or split C-band into two parts, or split L-band into two p... |
 |
100G QSFP28 DAC | QSFP28 100g direct attach cableare compliant with the SFF-8665 specifications. Various choices of wire gauge are available from 30 to 26 AWG with v... |
 |
FIBER BRAGG GRATING MANUFACTURER | As the "Optical Fiber Sensing Engineering Technology R&D Center of Guangdong Province ", T&S fiber Bragg grating manufacturer takes the fro... |
Same products
 |
2D Matrix Fiber Array | Seller: Zhongshan Meisu Technolody Co.,Ltd | Two-dimensional M * N fiber array is a kind of fiber component that has many fibers arranged orde... |
 |
Endoscope Cable for STORZ H3-Z | Seller: Hangzhou Sihan Medical Equipment Co., Ltd | Endoscope Cable for STORZ H3Z Introducing the brand new STORZ H3-Z Cable Replacement, meticulous... |
 |
Steel Fiber For Industrial Floors | Seller: Tengzhou Star Smith Metal Products Co.,Ltd | Steel Fiber For Industrial Floors Steel fiber reinforced concrete industrial building ground ... |
 |
Orivision DVI Extender | Seller: Nantong ZYDZ Electronic Co., Ltd. | Orivision DVI Extender ORIVISION offers a wide selection of products for extending DVI video, aud... |
 |
Orivision H.265 1080P@60 IP To SDI Video Decoder With Loop Out | Seller: Nantong ZYDZ Electronic Co., Ltd. | Brand: ORIVISION Model: ZY-DS931 Input Interface: LAN Port*1 Output Interface: SDI*2, audio*1 Vid... |
