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.
在线联系供应商
Other supplier products
 |
FIBER BRAGG GRATING | As the " Optical Fiber Sensing Engineering Technology R&D Center of Guangdong Province, T&S takes the frontier application and development ... |
 |
MTP/MPO LOOPBACK | T & S MTP / MPO fiber loop is a device used for parallel connection tests and an aging test of optical communication equipment. Well-designed b... |
 |
AOC (ACTIVE OPTICAL CABLE) | AOC is a cabling technology that accepts the same electrical inputs as a direct attach cable, but uses optical fiber "between the connectors". AOC ... |
 |
MT FERRULE | The MT ferruleis a multi-fiber, plastic ferrule with a square end-face of 6.4x2.5 mm and fiber pitch 0.25mm, widely applied in MPO connectors and A... |
 |
MTP®/MPO LOOPBACK Adapter | T & S MTP® / MPO fiber loop is a device used for parallel connection tests and an aging test of optical communication equipment. Well-desig... |
Same products
 |
2D Matrix Fiber Array | 卖方: 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 | 卖方: 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 | 卖方: Tengzhou Star Smith Metal Products Co.,Ltd | Steel Fiber For Industrial Floors Steel fiber reinforced concrete industrial building ground ... |
 |
Orivision DVI Extender | 卖方: 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 | 卖方: Nantong ZYDZ Electronic Co., Ltd. | Brand: ORIVISION Model: ZY-DS931 Input Interface: LAN Port*1 Output Interface: SDI*2, audio*1 Vid... |
