Ibsen Photonics A/S has added a wavelength-extended, high-resolution model to its I-Mon series E-USB interrogation monitors for fiber Bragg grating sensor systems. The I-Mon 512E-USB spectrometer with single-mode fiber features a wavelength range of 1510 to 1595 nm, sensitivity down to –90 dBm, and maximum optical resolution of 0.3 nm. It measures more than 70 fiber Bragg grating sensors at 1200-pm minimum spacing. Its sensitivity enables high resolution at very low light levels. It comes with a USB interface and LabView-based application software for setup with a laptop computer, and it can serve as a stand-alone monitor in combination with a customer-selected light source. A developer’s kit includes dynamic link libraries and drivers for OEM integration with Visual C++ and Visual Basic.