Papadimitriou, K;
Hebden, J;
Arridge, S;
Powell, S;
(2019)
A dual-wavelength spread spectrum-based spectroscopic system For time-domain near-infrared diffuse optical imaging.
In: Fantini, S and Tromberg, BJ and Sevick-Muraca, E and Taroni, P, (eds.)
Proceedings of SPIE. Optical Tomography and Spectroscopy of Tissue XIII.
SPIE: San Francisco (CA), USA.
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Abstract
We advance our previous research on spread spectrum spectroscopy by adding spectroscopic functionality using a custom-made optical transceiver. The new transceiver module features a 680nm communications-grade verticalcavity surface-emitting laser (VCSEL) and matches the performance of commercial 10Gb/s optical transceivers, which allow for a sub-ns instrument response. The optical power of the VCSEL can be software-adjusted up to 2mW with ∼40μA driving current resolution. This module, combined with a commercially available Gigabit optical transceiver at 850nm, allows us to derive information about the optical properties of tissue-equivalent phantoms and the concentration of various haemodynamic parameters in in vivo measurements.
| Type: | Proceedings paper |
|---|---|
| Title: | A dual-wavelength spread spectrum-based spectroscopic system For time-domain near-infrared diffuse optical imaging |
| Event: | Optical Tomography and Spectroscopy of Tissue XIII |
| Location: | San Francisco (CA), USA |
| Dates: | 2nd-7th February 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1117/12.2507992 |
| Publisher version: | https://doi.org/10.1117/12.2507992 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | field programmable gate array, near infrared spectroscopy, optical transceiver, spread spectrum, time-domain, vertical-cavity surface-emitting laser |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10069839 |
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