Supercontinuum as a light source for miniaturized endoscopes

M. K. Lu, H. Y. Lin, C. C. Hsieh, F. J. Kao

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In this work, we have successfully implemented supercontinuum based illumination through single fiber coupling. The integration of a single fiber illumination with a miniature CMOS sensor forms a very slim and powerful camera module for endoscopic imaging. A set of tests and in vivo animal experiments are conducted accordingly to characterize the corresponding illuminance, spectral profile, intensity distribution, and image quality. The key illumination parameters of the supercontinuum, including color rendering index (CRI: 72%~97%) and correlated color temperature (CCT: 3,100K~5,200K), are modified with external filters and compared with those from a LED light source (CRI~76% & CCT~6,500K). The very high spatial coherence of the supercontinuum allows high luminosity conduction through a single multimode fiber (core size~400μm), whose distal end tip is attached with a diffussion tip to broaden the solid angle of illumination (from less than 10° to more than 80°).

Original languageEnglish
Article number#268493
Pages (from-to)3335-3343
Number of pages9
JournalBiomedical Optics Express
Volume7
Issue number9
DOIs
StatePublished - 1 Sep 2016

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