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Updated: Mar 22, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Lensless two-photon imaging through a multicore fiber with coherence-gated digital phase conjugation
Donald B Conkey1, Nicolino Stasio1, Edgar E Morales-Delgado2
1École Polytechnique Fédérale de Lausanne, Laboratory of Optics, Station 17, Lausanne 1015, Switzerland.
Abstract:
We performed near-diffraction limited two-photon fluorescence (TPF) imaging through a lensless, multicore-fiber (MCF) endoscope utilizing digital phase conjugation. The phase conjugation technique is compatible with commercially available MCFs with high core density. We demonstrate focusing of ultrashort pulses through an MCF and show that the method allows for resolution that is not limited by the MCF core spacing. We constructed TPF images of fluorescent beads and cells by digital scanning of the phase-conjugated focus on the target object and collection of the emitted fluorescence through the MCF.
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