Fiber Optic Spectrophotometer Details
Developers in both industry and research use infrared spectrophotometers for non-invasive characterization of gases, liquids, and solids as well as characterization of light sources. At NLIR, MIDWAVE Spectrometer, FIBER Light Source, and application-specific measurement interface are fiber-coupled to comprise a modular fiber optic spectrophotometer.
The MIDWAVE Spectrometer measures mid-infrared light across the 2.0 – 5.0 µm spectral range with high sensitivity of 5 pW/nm and full-spectrum readout rates of 400 Hz. When combined with the FIBER Light Source, the system enables high-speed spectral measurements with 10 µs temporal resolution, making it suitable for both laboratory measurements and inline QA/QC monitoring at the production lines.
Fiber-optic coupling allows flexible installation in complex setups, enabling mid-IR spectroscopic measurements directly in production environments.
Powered by NLIzeR Software
MIDWAVE Spectrometer comes with an NLIzeR Software for easy spectral analysis. With NLIzeR, you get:
- Adjustable exposure time, averaging, gain, and offset.
- Live data stream, external trigger mode, background capture, transmission view, data saving, and many more features.
API interfaces for MATLAB, Python, and C (via DLLs), enabling seamless integration into custom workflows or automated processes.
Specifications
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Experience real-time measurements
Unlike traditional benchop spectrophotometers, NLIR’s fiber-optic spectrophotometer solution enables seamless integration into industrial setups for real-time QA/QC monitoring. Explore our measurement examples below.
Multi-Gas Live Monitoring with NLIR's fiber-optic spectrophotometer
The video demonstrates multi-component gas measurements in action. NLIR’s FIBER Light Source delivers light through a fiber to a simple gas cell, while another fiber guides the transmitted light to NLIR’s MIDWAVE Spectrometer. The spectrometer captures spectra every 20 milliseconds, clearly showing the transmission features on screen.
Optical Coating Transmission Measurements with NLIR'S Fiber-Optic Spectrophotometer
In this video, we demonstrate how NLIR’s MIDWAVE Spectrometer, combined with FIBER Light Source, can measure transmission spectra of optical filters in real time. With an exposure time of just 2 ms, the spectrometer captures data from every filter on the rotating wheel during each full rotation.
High-Speed plastic foil characterization with a mid-infrared Spectrophotometer
The video demonstrates an example of a spinning sample wheel that rotates at the speed of 300 rounds per minute (RPM). This showcases how fast MIDWAVE Spectrometer is able to acquire spectral information of different plastic foils, proving the potential for in-line monitoring.
Measuring alcohol in liquids using mid-infrared fiber-coupled ATR probe
By combining NLIR’s MIDWAVE Spectrometer with the FIBER Light Source, and ATR Probe you can achieve fast and accurate alcohol measurements in liquid in the 2.0 – 5.0 µm wavelength range enabling real-time PAT monitoring. The fiber-coupled ATR probe from ArtPhotonics offers high transmission and integrates seamlessly with our products.
Scientific Research
Our fiber optic spectrophotometer has been tested in various applications
Online characterization of mixed plastic waste using machine learning and mid-infrared spectroscopy
Accurate characterization of mixed plastic waste using machine learning and fast infrared spectroscopy
Trusted by engineers across industries & fields
Our customers from different industries have already achieved breakthrough in spectroscopy measurements with our fiber optic spectrophotometer. Read about their success stories below or contact us today.
Eliana La Francesca, PhD
Versatile characterization enabled by fiber-coupled spectrometer
We use the NLIR’s MIDWAVE Spectrometer for our calibration set-up. We appreciate the versatility of fibre coupling, the fast response of the detector and the ability to work at room temperature. All these aspects help us in the fundamental step of independent characterization of sources and optical elements.
A key device for sensitive, broadband trace gas detection
We are very satisfied with the outstanding performance of the NLIR’s upconvertion spectrometer, offering both superior sensitivity and spectral range. These advantages allowed us to develop a versatile broadband (> 600 cm-1) trace gas sensor for single species as well as fast and stable multi-species detection. It has been a pleasure working with their innovative and skilled technical team.
Associate Professor Dr. Frans JM Harren & Dr. Qing Pan
Stas Zinchik, Ph.D.
A primary instrument for our team’s fast, AI-based research activity
We have been using NLIR’s MIDWAVE Spectrometer for about two years now, successfully performing inline plastic characterization. The MIDWAVE Spectrometer has become a primary instrument for our team’s fast, AI-based plastic waste stream characterization research activity.
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