I-MON 256 High Speed / 512 High Speed

I-MON 256 High Speed

I-MON High Speed

The I-MON 256/512 High Speed Interrogation Monitor offers full spectrum monitoring of FBG sensors at line scan rates up to 35 kHz. A high spectrometer resolution combined with a broad wavelength range provides high-resolution interrogation monitors, allowing measurement of a large number of FBG sensors.

A GigE interface and a data acquisition software enables plug-and-play operation for integrators of FBG sensing systems.


Stand-alone Interrogation Monitor and/or OEM Interrogation Monitor Modules:

  • Vibration analysis
  • Temperature measurements
  • Pressure monitoring
  • Strain measurements


Parameter UnitI-MON 256 HSI-MON 512 HS
Maximum number of FBG sensors3770
Minimum FBG spacingpm / GHz 1200 / 1501200 / 150
Wavelength range nm 1525 - 15701510 - 1595
Wavelength fit resolution (-20 dBm input power) pm < 0.5< 0.5
Repeatability (over any pol. state) pm 3 (5 max)3 (5 max)
Wavelength linearity pm 5 (typ)5 (typ)
Wavelength drift pm/deg. C1 (3 max) (*)1 (3 max) (*)
Dynamic range dB 3030
Input optical power range dBm-75 to - 25-75 to - 25
Measurement frequency kHz
35 max17 max
Electrical interface GigEGigE
Power supply 5 VDC, 3A5 VDC, 3A
Operating temperature deg C 0 to 500 to 50
Size (LxWxD) mm 124x94x59124x94x59

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

I-MON 256/512 High Speed Evaluation software

The I-MON High Speed Interrogation Monitor comes with evaluation software providing plug-and-play operation. LabVIEW source code is included with the Evaluation software, along with DLL and drivers for OEM integration.

The I-MON Evaluation software will demonstrate the performance of the I-MON High Speed in an easy manner without the need for tedious programming from the customer’s side.

I-Mon High Speed Evaluation Software

I-Mon High Speed Evaluation Software

An example from the Evaluation software is illustrated above. The spectrum graph screen of the Evaluation Software illustrates the pixel response from the image sensor of the I-MON, i.e., the FBG sensor peaks. Other screens are available for configuration, wavelength fit and FFT analysis. The software allows the user to save raw data as well as wavelength fit data for further processing with external software programs.

Ordering I-MON 256 High Speed

The I-MON 256 High Speed is available for online purchase, by either Credit Card or wire transfer

Go to shop

Or, request a quotation here.


Ordering I-MON 512 High Speed

The I-MON 512 High Speed is available for online purchase, by either Credit Card or wire transfer

Go to shop

Or, request a quotation here.

Download Product Sheets

pdf_icon Ibsen Product Sheet – I-MON High Speed V1

Additional Material

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