FB200 FBG SENSOR MONITOR

Wavelength monitor for the FBG sensor system

  • FBG (Fiber Bragg Grating) sensing system
  • Spectroscope
  • FBG spectrum measurement
  • Measurement example

 
 

High Speed and High Resolution Measurement

  • Measures power and center wavelength of FBG reflection spectrum
  • Wavelength range: 1527 to 1567 nm, or 1568 to 1607 nm
  • Wavelength resolution: 1 pm
  • Power range: -4 dBm to -60 dBm (0.1 nm RBW)
  • Sampling interval: 10 msec to 360 sec (fastest: 100 Hz)
  • Number of simultaneously measurable FBG sensors: 40 (typical)

Ultra-Compact and Highly Reliable

  • Polychromator architecture with no moving parts
  • 170 (W) X 28 (H) X 220 (D) mm, 1.2 kg
  • 170 (W) X 101 (H) X 220 (D) mm, 2.2 kg (with power supply)
  • Highly reliable design for WDM system applications (lifetime > 10 years)
  • Operating temperature: 0 to 60 degrees c , 0 to 50 degrees C (performance)

FBG Sensing System


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Spectroscope

Polychromator architecture with Photo Diode Array (PDA)
  • Polychromator architecture with in-house InGaAs PDA
  • Fixed diffraction grating offers robust configuration
  • Architecture has no moving parts which enables the module to be compact, highly reliable, and to achieve high-speed measurement.
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Wavelength Resolution
  • High resolution ( 1 pm) is achieved by a unique interpolation algorithm from pixel data. 

FBG Spectrum Measurement

The center wavelength of an FBG spectrum is calculated through interpolation of pixel data, which allows a wavelength display resolution of 1 pm. Number of simultaneously measurable FBG sensors is 40 (typical, depending on FWHM and pitch (max. 100 FBGs)).
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Schematic of photodiode array and reflection spectrum of FBG

Measurement Example (1)

FB200 FBG sensor monitor versus a wavelength meter

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Measurement Example (2)

High Speed measurement (10 msec interval)

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10 Hz vibration
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34 Hz vibration
(Solid line: sine fit curve)

Measurement Example (3)

GUI on PC


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3 FBG sensor


Name Description File Type  
Bulletin FB200-01E FB200 Fiber Bragg Grating Sensor Monitor pdf icon
138 KB
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