Spectral Image Sensor: FASPEC Optical Image Prototype

The FASPEC(Fast Adaptive Spectrometer Programmable for the Evaluation of Combustion) sensor addresses the need for high-speed, multi-wavelength, multi-line-of-sight optical monitoring in dynamic environments such as flames.

FASPEC’s unique spectrometer combines up to 16 fiber-optic light inputs, programmable wavelength tuning with a Digital Micro-mirror Device (DMD), and detection with a linear sensor array to monitor multiple views simultaneously while switching rapidly between wavelengths at a sub-millisecond rate.

Spectral measurements can be acquired in a variety of ways, including a single band or several bands, a chemically selective matched filter response function, or an entire spectrum using Dispersive Transform Spectroscopy (DTS).

The simultaneous measurements over multiple lines-of-sight can enable tomographic reconstruction of the instantaneous shape of a flame or flow field.

Applications include:
• Combustion and boiler monitoring to determine temperature, combustion efficiency, and flame location
• Measurement of the dynamics and spatial characteristics of high-temperature effluents and other gas streams

Near-IR FASPEC prototype (left) and UV demonstrator (right).

technical Contact

Name Name


Related Links


Goldstein, P. Vujkovic-Cvijin, M.J. Fox, B. Gregor, J. Lee, J. Cline, and S.M. Adler-Golden,DMD-Based Adaptive Spectral Imagers for Hyperspectral Imagery and Direct Detection of Spectral Signatures, Proceedings of the SPIE MOEMS-MEMS: Micro- and Nanofabrication Conference, Vol. 7210 (2009).

Goldstein, J. Lee, B. Gregor, S. Kramer, S. Kozola, and K. Semega,IR Structured Emission-Based Speciation, Thermometry, and Tomography of CO and H2O In High-Pressure Combustors, Proceedings of ASME Turbo Expo 2006, GT2006-90899 (2006).

Spectral Science, Inc