In this proceeding we demonstrate a system combining optical coherence tomography (OCT) and hyper-spectral imaging (HSI) into a single dual-clad fiber (DCF). Combining these modalities gives access to the sample morphology through OCT and to its molecular content through HSI. Both modalities have their illumination through the fiber core. The OCT is then collected through the core while the HSI is collected through the inner cladding of the DCF. A double-clad fiber coupler (DCFC) is used to address both channels separately. A scanning spectral filter was developed to successively inject narrow spectral bands of visible light into the fiber core and sweep across the entire visible spectrum. This allows for rapid HSI acquisition and high miniaturization potential.
Xavier Attendu, Robin Guay-Lord, Mathias Strupler, Nicolas Godbout, and Caroline Boudoux, "Combined optical coherence tomography and hyper-spectral imaging," Proc. SPIE 10057, Multimodal Biomedical Imaging XII, 1005706 (Presented at SPIE BiOS: January 28, 2017; Published: 15 February 2017); https://doi.org/10.1117/12.2252924.
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