Long working distance: all-fiber probe for anatomical optical coherence tomography of the large airways

Santosh Balakrishnan; Amy L Oldenburg

doi:10.1117/12.2606880

7 March 2022 Long working distance: all-fiber probe for anatomical optical coherence tomography of the large airways

Proceedings Volume PC11937, Endoscopic Microscopy XVII; PC119370C (2022) https://doi.org/10.1117/12.2606880
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

A fiber-optic probe with a low numerical aperture lens at its tip is better suited for imaging the large airways, as the distance between the probe and the tissue surface is unknown and variable. A multi-segment, all-fiber lens, that consists of a section of coreless fiber (CF) and graded index fiber, followed by a CF ball lens section is described. With this design, lenses with a working distance (WD) greater than 7 mm can be obtained with ball diameters as small as 365 µm and nearly collimated beams with WD greater than 14 mm are demonstrated with a ~500 µm ball tip.

Conference Presentation

Citation Download Citation

Santosh Balakrishnan and Amy L Oldenburg "Long working distance: all-fiber probe for anatomical optical coherence tomography of the large airways", Proc. SPIE PC11937, Endoscopic Microscopy XVII, PC119370C (7 March 2022); https://doi.org/10.1117/12.2606880

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