Select Page

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.

FBG Array Diagram
FBG Interrogator and Sensor Chain Quick Guide


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 Types

Standard=SM800 single-mode fiber, 5.6µm core, polyimide coated (max 300°C)

UHS=Ulta High Strength, pure silica core, polyimide coated (max 300°C)

UHT=Ulta High Temperature, pure silica core, no coating (max 800°C)

Fiber Bend Radius Min 5mm
Sensor Capillary Options Bare Fiber, PEEK, Stainless Steel, Silica, Alumina Ceramic
Lead-in Jacketing Options Glass textile sleeving (GL) or Stainless Steel Corrugated Tubing (SST)
Temperature Range -250°C to +800°C
(Depends on selected Fiber, Capillary, and Jacketing options)

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


FBG Sensor Chain Dimensional Configuration


  • 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

  • FBG Sensors Chains are compatible with all FiSens® FBGX series Interrogators.
  • General purpose BRAGGSENS and multichannel FBG-INTERROGATOR application software available at no charge. Supports data logging FBG data (wavelength, temperature, and strain) in Excel compatible format. Based on National Instruments LabView® runtime kernel.
  • Programmer/Software manual provides support for embedding FBGX communications into customer-developed software.
  • Contact Sales for overall technical support.


FiSens FBG Sensor Chain Configurator Datasheet
FiSens BRAGGSENS (Single Channel) Software Quick Start Guide
FiSens FBG-INTERRROGATOR (Multichannel) Software 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: P-5-N-GL-FI, Xin=1000, X1=100, X2=50, X3=50, X4=50, X5=50, Xout=5
Description: FBG Sensor Chain for Temperature or Strain 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 apart, Xout length=5mm

Quick Ship Configurations

FBGX100 Standard 1-Channel Interrogator, max 30 FBGs
FBGX400 Standard 4-Channel Interrogator, each FBG Sensor Chain can have max 30 FBGs (total of 120 for 4 channels)
FBG-MR0010 STOCK 10-FBG Sensor Chain, A=P-10-W-GL-FI, B=1000-(10*100)-100 (FBGs are 100mm apart), For Engineering Evaluation
FBG-MR0050 STOCK 1-FBG Sensor Chain, A=P-1-N-GL-FI, B=1000-200-10, For Engineering Evaluation


Sensor Type Options:
P=Polyimide-coated SM800P fiber (Standard), for Temperature or Strain measurements (-40C to 300C)
A=Acrylate-coated SM800P fiber, for limited range Temperature measurements (-40C to +80C)
UHS=Ultra High Strength, for strain measurements in extreme temperatures (-250C to +300C)
UHT=Ultra High Temperature, for extreme temperature measurements (-250C to +800C0
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/FBGX400 interrogators, select W
Lead-In Protection/Jacketing Type For Standard applications, GL = Glass Textile (max 155°C)
For High Temperature Applications with SSC Capillary, specify 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)
AC = Alumina Ceramic capillary (max 800°C)
Xin Length of Lead-in in mm, Options 50-10’000 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, Minimum 2mm (length of 1mm FBG plus 1mm spacing)
X3 = Distance from FBG2 to FBG3, Minimum 2mm
Xout Length of Lead-out termination in mm, 2-100mm
0 Item | $0.00
View Cart