FiSens FBG Sensor Chains

FiSens Sensor Chain

FiSens® FBG Sensor Chains

FBG Sensor Chains for use with FiSpec Interrogators

The FiSens® FBG Sensor Chain is a spliceless chain of multiple high-precision FBG sensors “written” into a single SM800 fiber. When the sensor is paired with a FiSens® interrogator offers a multipoint, distributed sensing solution for temperature or strain measurements. The FBG sensor chains utilize a unique fentosecond (fs-Laser) Laser Inscription method offering an innovative FBG-based solution with best performance together with lowest cost per sensor point on the market.


The following is a summary specification FiSens FBG Sensor Chains. Consult the individual data sheets and manual for detailed performance and interface information.

Sensor Chain Length Up to 500 meters
Number of FBGs Up to 30
Grating Length 1mm
Grating Spacing Min 1mm
Fiber Type High Temperature SM800 single-mode fiber, 5.6µm core, polyimide coated
Fiber Bend Radius Min 5mm
Sensor Capillary Options PEEK, Stainless Steel, Silica
Lead-in Jacketing Options Glass textile sleeving (GL) or Stainless Steel Corrugated Tubing (SST)
Temperature Range -40°C to +350°C
(Depends on selected Fiber, Capillary, and Jacketing Options)

Specifications subject to change without notice
FiSens® is a registered trademark of FiSens GmbH



  • Up to 30 measurement points per fiber
  • Sensor chains up to 500 meters
  • Innovative and automated fs-Laser Inscription Method enables high precision FBG sensor chain manufacturing
  • Temperature measurement precision to 0.1°C
  • Strain measurement precision to 1µε
  • Customizable FBG configurations
  • Stable up to 350°C


  • FC-APC, Standard Connection
  • Sensor chains fabricated from industry-standard SM800 single-mode fiber

Software Support

  • Compatible with FiSens® X100/X150 Interrogator
  • BraggSens software is LabView-based
  • ASCII protocol available for customer software integration
  • Contact Sales for application-specific engineering support


FiSens FBG Sensor Chain Datasheet
FiSens Manual
FiSens Quick Start Guide
FBG-MR0010 10-FBG Sensor Chain Drawing
FBG-MR0050 1-FBG Sensor Chain Drawing


Call +1-805-389-6600 or email

Ordering Information

Every FBG sensor application and sensor configuration is different. Micronor specializea in providing the unique configuration that your application requires. Typical lead time is 3-4 Weeks ARO for small quantities. An Ordering Part Number can be assigned and quoted within 1-2 business days.

Sample FBG configuration: T-5-N-GL-FI, Xin=1000, X1=100, X2=50, X3=50, X4=50, X5=50, Xout=5
Description: FBG Sensor Chain for Temperature sensing with 5 FBGs, 1000mm (1m) General Purpose GL Lead-in, FBGs chain is bare fiber (no capillary), FBG1 to be 100mm from end of Lead-In, FBG2-FBG5 are 50mm appart, Xout length=5mm

Quick Ship Configurations

FBGX100 Standard Interrogator, max 30 FBGs
FBGX150 High Precision Interrogator, max 25 FBGs, select Narrow Spectral Band option for FBG sensor chain configuration
FBG-MR0010 10-FBG Sensor Chain, T-10-N-GL-FI, Each FBG is 100mm apart, For Engineering Evaluation and Experimentation
FBG-MR0050 1-FBG Sensor Chain, T-1-N-GL-FI, Each FBG is 100mm apart, For Engineering Evaluation and Experimentation
Sensor Type Options:
T=Temperature, S=Strain
FBG Quantity 1 = 1 FBG, up to maximum 30 = 30 FBGs
Spectral Range N = Narrow (808-865nm), W = Wide (808-880nm)
For use with FBGX100 interrogator, select either N or W
For use with FBGX150 interrogator, select N only
Lead-In Protection/Jacketing Type For Standard applications, GL = Glass Textile (max 155°C)
For High Temperature Applications, SST = Stainless Steel Corrugated Tubing (max 600°C)
Sensor Capillary FI = Bare polyimided-coated fiber
PE = PEEK Tubing (max 260°C)
SSC = Stainless Steel Capillary (max 600°C)
SI = Silica capillary (max 350°C)
Xin Length of Lead-in in mm, Options 100-10’000 mm
X1..X30 Specify distance from previous FBGn-1 to next FBGn, in mm
X1 = Distance from end of Lead-In to FBG1
X2 = Distance from FBG1 to FBG2
X3 = Distance from FBG2 to FBG3
Xout Length of Lead-out termination in mm, 2-10mm

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