Ibsen Photonics has proclaimed the launch of its I-MON 850 interrogation monitors for live spectrum evaluation of fiber Bragg grating (FBG) sensors in the wavelength of 850-nm range.
The intense sensitivity allows high resolution even in lesser light range, and the additional line-scan 15-kHz frequency option permits rapid calibrations. By employing IEEE1394a FireWire connection or USB and information processing software, they deliver simplified set up using a laptop and functions as stand-alone sensors in conjunction with a user-preferred light source. They can be incorporated with much ease employing the user’s interrogation monitor control embedded circuit board and the exterior activation input allows precise timing.
The FireWire version features up to 25 FBG sensors with 14,600 Hz calibration frequency and is functional at 835 to 865 nm. The USB range is equipped with 40 sensors having 15 Hz evaluation frequency and is operative at 825 to 875 nm frequency. Both the versions provide minimal FBG spacing in the range of 1200 pm, <0.5 pm resolution, extreme recurrence of 5 pm throughout any state of polarization, specific 3 pm wavelength linearity, maximal 3 pm/°C wavelength shift and an optical power input of -80 to -20 dBm.
These rugged, athermal devices are configured based on the company’s patented and proprietary intensive-resolution spectrometer technology, employing combined silica transmission gratings. They spatially differentiate the wavelength spectrum of light for the equivalent processing of the autonomous FBG sensor peaks that are in turn monitored by a diode sequence. They are accessible as a developer’s tool, containing software, enabling plug-and-play functionality and driver software components and the DLL files permits the users to create their own required calibration applications for the integration of OEM.
These devices are widely deployed for thermal and strain monitoring, pressure analysis and vibration evaluations.