Stabilized single-fiber reflectance spectroscopy using wideband multimode circulators

Xavier Attendu; Aude Benk-Fortin; Dirk J. Faber; Caroline Boudoux; Ton G. van Leeuwen

doi:10.1117/12.3003093

13 March 2024 Stabilized single-fiber reflectance spectroscopy using wideband multimode circulators

Xavier Attendu, Aude Benk-Fortin, Dirk J. Faber, Caroline Boudoux, Ton G. van Leeuwen

Proceedings Volume PC12831, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XXII; PC128310I (2024) https://doi.org/10.1117/12.3003093
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Single fiber reflectance spectroscopy can measure tissue optical properties and analyze physiological state. However, the standard implementation of SFR comprises several sources of instabilities that are typically not accounted for. These are fiber modal content, instabilities in the illumination spectrum, and bend losses. These instabilities lead to reduced reproducibility and reliability. We propose a new SFR system design with dynamic correction of source fluctuations and bend losses. Furthermore, we replace the traditional bifurcated fiber with a wideband multimode circulator for improved light transmission and reduced modal sensitivity. We demonstrate the enhanced stability in a one-to-one comparison with a standard system.

Conference Presentation

Citation Download Citation

Xavier Attendu, Aude Benk-Fortin, Dirk J. Faber, Caroline Boudoux, and Ton G. van Leeuwen "Stabilized single-fiber reflectance spectroscopy using wideband multimode circulators", Proc. SPIE PC12831, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XXII, PC128310I (13 March 2024); https://doi.org/10.1117/12.3003093

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