High-resolution wavefront shaping with a photonic crystal fiber for multimode fiber imaging

Lyubov V. Amitonova*, Adrien Descloux, Joerg Petschulat, Michael H. Frosz, Goran Ahmed, Fehim Babic, Xin Jiang, Allard P. Mosk, Philip St.J. Russell, Pepijn W.H. Pinkse

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

52 Citations (Scopus)
24 Downloads (Pure)


We demonstrate that a high-numerical-aperture photonic crystal fiber allows lensless focusing at an unparalleled resolution by complex wavefront shaping. This paves the way toward high-resolution imaging exceeding the capabilities of imaging with multi-core single-mode optical fibers. We analyze the beam waist and power in the focal spot on the fiber output using different types of fibers and different wavefront shaping approaches. We show that the complex wavefront shaping technique, together with a properly designed multimode photonic crystal fiber, enables us to create a tightly focused spot on the desired position on the fiber output facet with a subwavelength beam waist.

Original languageEnglish
Pages (from-to)497-500
Number of pages4
JournalOptics letters
Issue number3
Publication statusPublished - 1 Feb 2016


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