Alxenses’s offers a series of fiber-optics products based on Fiber Bragg Grating (FBG) technology. FBG is produced in optical silica fibers by creating periodic refractive index variations in the fiber core using UV laser light. FBG is an in-line optical filter and its reflection wavelength and spectral shape depends on the periodicity, length as well as depth of the refractive index changes of the grating structure. FBG exhibits very low loss and is low-cost compared to the bulk-optics counter parts. By altering the grating periodicity and refractive index change, FBGs for various fiber-optics communication and sensing applications can be easily produced.
Features:
- High reliability and stability
- High reflectivity
- High side-lobe suppression ratio
- Low insertion loss
- Narrow bandwidth optical filter
- Immunity to EMI
- Multiplexing capability
Applications:
- Strain fiber optics sensor
- Temperature fiber optics sensor
- Displacement fiber optics sensor
- Humidity fiber optics sensor
Both Acrylate and Polyimide coated FBGs are available.
Note:
Acrylate and polyimide are the two common coating materials for optical fiber. The polyimide coating withstands higher operating temperature (up to 300°C) than Acrylate material (up to 85°C).
FBG Specifications
| FBG (Fiber Bragg Grating) |
| Parameters |
Values |
Units |
Data Sheet |
| Wavelength Range |
1510~1590 |
nm |
 |
| FBG Profile |
Apodized |
— |
| Center Wavelength Tolerance |
+/-0.5 |
nm |
| FBG length / Grating Length |
3 |
5 |
10 |
15 |
mm |
| Reflectivity |
>70 |
>75 |
>90 |
>90 |
% |
| Bandwidth at 3dB |
<0.7 |
<0.7 |
<0.3 |
<0.3 |
nm |
| Side Lobe Suppress Ratio (SLSR) |
>10 |
>15 |
dB |
| Coating and Recoating Material |
Acrylate or Polyimide |
— |
| Proof Test |
>100 |
kpsi |
| Pigtail length on each side of FBG |
1m / Customized length |
m |
| Fiber Type |
SMF-28 compatible / polyimide |
— |
| Fiber Termination |
Bare Fiber, FC/UPC, or FC/APC |
— |
| Operating Temperature |
Acrylate FBG: -5~+80 Polyimide FBG: -40~+300 |
°C |
| Storage Temperature |
Acrylate FBG: -40~+80 Polyimide FBG: -40~+300 |
°C |
FBG Enquiry Form
For Customized FBG, please inform us your requirement on the following specification:
| FBG (Fiber Bragg Grating) |
| Parameters |
Units |
Customized Specifications |
| Center Wavelength |
nm |
(1510~1590) |
| Grating length |
mm |
|
| Reflectivity |
% |
|
| Bandwidth at 3dB |
nm |
|
| Side Lobe Suppress Ratio (SLSR) |
dB |
|
| Pigtail length on each side of FBG |
m |
|
| Connector Type |
— |
|
| Coating & Recoating materials |
— |
Acrylate or Polymide |
FBG Ordering Code
Single FBG – Part Number
|
AL – (1) S – (2) A / P – FBG – (3) XXXX – (4) NC
|
| (1) Product Type |
(2) Coating Material |
(3) Center Wavelength |
(4) Connector |
|
S: Single FBG
|
A: AcrylateP: Polyimide |
1510~1590 nm |
NC: no connector FP: FC/PC FA: FC/APC |
*Alxenses Company Limited reserves the right to make changes to the FBG products without notice.
For FBG and Sensor enquiry, please email to contact@alxenses.com
FOR MOR DETAILS, PLEASES VISIT OUR WEBSITE: http://www.alxenses.com/FBG.html or http://www.alxenses.com/
Alxenses Company Ltd. 