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. 2022 Mar 21;13(4):2278–2285. doi: 10.1364/BOE.449110

Fig. 1.

Fig. 1.

Schematic of the hybrid confocal Raman endomicroscopic system. The system comprises an integrated 488 nm confocal microscope for morphological imaging and a NIR Raman module for molecular characterization. Using a custom circular to linear fiber bundle with a deactivated central fiber for spectrometer coupling we reduce the directly scattered silica Raman signal originating from the central part of the coherent fiber bundle.