Label-free video-rate micro-endoscopy through flexible fibers via Fiber Bundle Distal Holography (FiDHo)

Badt, Noam; Katz, Ori

doi:10.48550/arxiv.2102.06482

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We extract image data from this non-ballistic light by pre-characterisation of a TM that enables the spatial control of the incident field to guide it through the MMF to its target. Our work also complements recent demonstrations of 3D imaging through thick randomly scattering media, in which diffuse scattering effects are inverted via ultra-fast pulse detection [40], and optical sectioning through larger form factor multicore fibres using in-situ distal holography [41].…”

supporting

confidence: 68%

Time of Flight Based 3D Imaging Through Multimode Optical Fibres

Stellinga

Phillips

Selyem

et al. 2019

Frontiers in Optics + Laser Science APS/DLS

View full text Add to dashboard Cite

Time-of-flight (ToF) 3D imaging has a wealth of applications, from industrial inspection to movement tracking and gesture recognition. Depth information is recovered by measuring the round-trip flight time of laser pulses, which usually requires projection and collection optics with diameters of several centimetres. In this work we shrink this requirement by two orders of magnitude, and demonstrate near video-rate 3D imaging through multimode optical fibres (MMFs) -the width of a strand of human hair. Unlike conventional imaging systems, MMFs exhibit exceptionally complex light transport resembling that of a highly scattering medium. To overcome this complication, we implement high-speed aberration correction using wavefront shaping synchronised with a pulsed laser source, enabling random-access scanning of the scene at a rate of ∼23,000 points per second. Using non-ballistic light we image moving objects several metres beyond the end of a ∼40 cm long MMF of 50 µm core diameter, with millimetric depth resolution, at frame-rates of ∼ 5Hz. Our work extends far-field depth resolving capabilities to ultra-thin micro-endoscopes, and will have a broad range of applications to clinical and remote inspection scenarios.

show abstract

supporting

confidence: 68%

Time of Flight Based 3D Imaging Through Multimode Optical Fibres

Stellinga

Phillips

Selyem

et al. 2019

Frontiers in Optics + Laser Science APS/DLS

View full text Add to dashboard Cite

show abstract

“…We extract image data from this nonballistic light by precharacterization of a TM that enables the spatial control of the incident field to guide it through the MMF to its target. Our work also complements recent demonstrations of 3D imaging through thick randomly scattering media, in which diffuse scattering effects are inverted using ultrafast pulse detection (29) and optical sectioning through larger form factor multicore fibers using in situ distal holography (30). Our prototype TOFbased 3D imaging system provides an exciting new modality to MMF-based microendoscopy, with many potential applications to remote inspection and biomedical imaging in the life sciences.…”

supporting

confidence: 52%