I-MON 256 High Speed
The I-MON 256 HS Interrogation Monitor offers real-time spectrum monitoring of FBG sensors in the full 1525 - 1570 nm wavelength range at line scan rates up to 34 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.
OEM Interrogation Monitor modules:
- Vibration analysis
- Temperature measurements
- Pressure monitoring
- Strain measurements
|Parameter||Unit||I-MON 256 HS|
|Maximum number of FBG sensors||37|
|Minimum FBG spacing||pm / GHz||1200 / 150|
|Wavelength range||nm||1525 - 1570|
|Wavelength fit resolution (-20 dBm input power)||pm||< 0.5|
|Repeatability (over any pol. state)||pm||3 (5 max)|
|Wavelength linearity||pm||5 (typ)|
|Wavelength drift||pm/deg. C||1 (3 max) (*)|
|Input optical power range||dBm||-75 to - 25|
|Measurement frequency||kHz||34 max|
|Power supply||5 VCD, 3A|
|Operating temperature||deg C||0 to 50|
(*) Note that by applying temperature control or temperature correction the wavelength accuracy over the entire wavelength range can be improved to 10 pm.
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High speed measurement example
To demonstrate the capabilities of the I-MON 256 HS Ibsen has made a measurement of the wavelength modulation from a piezo actuated FBG sensor with a 1 kHz tone. As seen from the picture to the right the I-MON 256 HS resolves the modulation perfectly.