Femtosecond fiber grating︱TVS-S-1400
▪ Structural health monitoring in civil engineering
▪ Transportation industry (railway, highway, aerospace)
▪ Energy industry (wind power generation, pipeline monitoring, nuclear reactors, etc.)
▪ Medical temperature and stress-strain monitoring
▪ Sensor packaging
Description
Femtosecond laser point-by-point writing method. Using femtosecond laser as the light source, the fiber is fixed on the precision moving platform, and the grating is written point by point through the coating layer, and the moving platform controls the grating period. The coating layer is not broken, high mechanical strength, good fatigue resistance, in addition, the femtosecond laser causes multi-photon absorption in the fiber to obtain and stable grating, suitable for high temperature and underwater, nuclear radiation resistance, corrosion resistance and other special fiber sensing, the femtosecond writing method has excellent adaptability to the fiber material, and basically does not need to be processed before and after.
Key Features
▪ High tensile strength
▪ High precision, high resolution
▪ No electromagnetic interference, intrinsically explosion-proof
▪ Small size, light weight
▪ Can achieve absolute measurement
▪ No calibration, strong reuse capability
▪ Cost-effective
Performance Properties
|
Fiber Type |
Pure Silica Core SM fibers, Polyimide |
|
Wavelength range |
1460～1620nm |
|
Custom center wavelength deviation |
±0.5nm |
|
FBG Length |
~8 mm |
|
Peak Reflectivity (max) |
≥50% |
|
FWHM (- 3 dB) |
0.25 nm (±0.05 nm) |
|
Isolation |
≥15dB |
|
Strain Limits |
20,000 με |
|
Strain Sensitivity |
~ 1.2 pm/με |
|
Operating Temperature Range |
-40~300℃ Remove coating, operating temperature ≤ 900℃ |
|
Thermal Response |
~ 10pm/℃ |
|
Fiber Coating |
Polyimide |
|
Optical connectors |
FC/APC or LC/APC |
Ordering Information
TVS-S-1400 - AA AA- BB - CC - DD - EE
AAAA：FBG center wavelength, the array, can list multiple wavelength values, unit nm;
BB：The number of FBG, for example, 08, is 8 FBGs array.
CC：When the number of FBG is greater than 1, the center distance of FBG is mm;
DD：Length of optical fibers at both ends (unit: mm);
EE：Fiber connector, FC-FC/APC, LC-LC/APC
