W-type double clad fiber mitigates multipath artifacts in multimodal optical coherence tomography

Adrian Tanskanen; Jeanie Malone; Geoffrey Hohert; Pierre Lane

doi:10.1117/12.2609965

7 March 2022 W-type double clad fiber mitigates multipath artifacts in multimodal optical coherence tomography

Adrian Tanskanen, Jeanie Malone, Geoffrey Hohert, Pierre Lane

Proceedings Volume PC11948, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI; PC1194810 (2022) https://doi.org/10.1117/12.2609965
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Multimodal optical coherence tomography (OCT) can be implemented using double-clad fiber (DCF). A consequence of using DCF is the introduction of multipath artifacts which deteriorate the quality of OCT imaging. We demonstrate that a w-type DCF, characterized by a depressed cladding layer between the core and the multimode cladding, can eliminate OCT multipath artifacts. The modal contents of the fiber are determined from simulation and verified experimentally. A w-type fiber-based endoscope is used to generate co-registered OCT and autofluorescence imaging (AFI) with reduced artifacts. Results are compared with a DCF-based catheter.

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Citation Download Citation

Adrian Tanskanen, Jeanie Malone, Geoffrey Hohert, and Pierre Lane "W-type double clad fiber mitigates multipath artifacts in multimodal optical coherence tomography", Proc. SPIE PC11948, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI, PC1194810 (7 March 2022); https://doi.org/10.1117/12.2609965

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KEYWORDS

Optical coherence tomography

Cladding

Auto-fluorescence imaging

Endoscopy

Imaging systems

Optical simulations

Tissues

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