The wavelength-reduction simulations were performed using real esophageal tissue data and the values of tissue properties obtained with the selected 16 wavelengths are comparable with those obtained using 400 wavelengths. However, it is important to notice the significance of wavelength selection which may be different when using the system for other tissue types. After this feasibility study, thin-film narrow-band pass filters were fabricated and its optical performance was assessed. Reflectance measurements, performed on tissue phantoms, using the full wavelength range and the fabricated optical filters provided comparable results.
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