I-MON 835 DISB

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I-MON 835 DISB Interrogation monitor (810 - 860 nm)

The I-MON 835 DISB Interrogation Monitors offer realtime spectrum monitoring of Fiber Bragg Grating (FBG) sensors in the 810-860 nm wavelength range. High spectrometer resolution combined with broad wavelength range provides high resolution interrogation monitors allowing measurement of a large number of FBG sensors.

Equipped with Ibsen DISB-101T electronics, the analoge video output from the detector is converted to a 16-bit digital signal that can be read over the SPI interface.

Applications

  • Vibration analysis
  • Temperature measurements
  • Pressure monitoring
  • Strain measurements
I-MON 256_512_835 DISB_2025 version
ParameterUnitI-MON 835 DISB
Maximum number of FBG sensors45
Minimum FBG spacingpm1200 pm
Wavelength rangenm810 - 860
Wavelength fit resolutionpm< 0.5
Repeatability (over any pol. state)pm3 (5 max)
Wavelength drift*pm / deg C1 (3 max)
Power/Measurement dynamic rangedB40/15
Input optical power rangedBm-70 to -22
Measurement frequencyHz600
Electrical interfaceDISB-101T SPI interface
Number of pixels835
Size (LxWxD)mm83x71x43
Operating temperaturedeg C0-70

(*) Note that by applying temperature control or temperature correction the wavelength accuracy over the entire temperature range can be improved.

Specifications are subject to change without prior notice. Design and specifications can be modified to suit a range of customer requirements

A detailed Product Specification and User’s Manual are available upon request.

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