I-MON 256 OEM / 512 OEM

Cost-efficient and high speed 1550 nm Interrogation Monitor for OEM integration
IMG_4045 - Cut resized


The I-MON 256/512 OEM Interrogation Monitors offer real-time spectrum monitoring of FBG sensors in the 1550 nm wavelength range 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 direct interface to the InGaAs detector offers OEM integrators a cost efficient solution for building their FBG sensing systems.


OEM Interrogation Monitor modules:

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


ParameterUnit I-MON 256 OEMI-MON 512 OEM
Maximum number of FBG sensors 3770
Minimum FBG spacing pm / GHz1200 / 150
Wavelength rangenm1525 - 15701510 - 1595
Wavelength fit resolution(*) pm< 0.5
Repeatability (over any pol. state) pm3 (5 max)
Wavelength drift (**) pm / deg C 1 (3 max)
Dynamic range (*) dB 30
Input optical power range (*)dBm -80 to - 20
Measurement frequency (*) kHz 35 max.17 max.
Electrical interfaceDirect interface to InGaAs detector
Number of pixels256512
Size (LxWxD) mm 21x50x6623x58x71
Operating temperaturedeg C0 to 70

(*) Depending on customer electronics.

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

I-MON 256 OEM  / 512 OEM Developer’s Kit

The I-MON 256/512 OEM Interrogation Monitor is available as a Developer’s Kit including software providing plug-and-play operation.

Click here for details on the I-MON 256/512 OEM Developer’s Kit


The I-MON 256 OEM / 512 OEM are available for online purchase, by either Credit Card or paypal payment:

Buy online:

Or, request a quotation on-line by following the quote link at the upper right of this page.

Additional Material

A detailed Product Specification describing the electronics interface for the I-MON 256 OEM / 512 OEM and a detailed User’s Manual for the I-MON 256 OEM / 512 OEM Developer’s Kit are both available by clicking here.

Download Product Sheets

pdf_icon Ibsen Product Sheet – I-MON OEM