Toward a miniature endomicroscope: Pixelationfree and diffraction-limited imaging through a fiber bundle

Donggyu Kim; Jungho Moon; Moonseok Kim; Taeseok Daniel Yang; Jaisoon Kim; Euiheon Chung; Wonshik Choi

doi:10.1364/OL.39.001921

Toward a miniature endomicroscope: Pixelationfree and diffraction-limited imaging through a fiber bundle

Donggyu Kim, Jungho Moon, Moonseok Kim, Taeseok Daniel Yang, Jaisoon Kim, Euiheon Chung, Wonshik Choi

Research output: Contribution to journal › Article › peer-review

94 Citations (Scopus)

Abstract

A fiber bundle is widely used for endoscopic imaging due to its direct image delivery capability. However, there exists an inevitable pixelation artifact, which limits spatial resolution to the diameter of individual fibers. In this Letter, we present a method that can eliminate this artifact and achieve diffraction-limited spatial resolution. We exploited the binary control of a digital micromirror device to measure a transmission matrix of a fiber bundle and to subsequently control mode mixing among individual fibers. In doing so, we achieved a 22 kHz scanning rate of a diffraction-limited focused spot and obtained fluorescence endoscope imaging (58 μm × 58 μm) with near video-rate (10.3 Hz) acquisition. Our study lays a foundation for developing an ultrathin and high-resolution microendoscope.

Original language	English
Pages (from-to)	1921-1924
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	7
DOIs	https://doi.org/10.1364/OL.39.001921
Publication status	Published - 2014 Apr 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "A fiber bundle is widely used for endoscopic imaging due to its direct image delivery capability. However, there exists an inevitable pixelation artifact, which limits spatial resolution to the diameter of individual fibers. In this Letter, we present a method that can eliminate this artifact and achieve diffraction-limited spatial resolution. We exploited the binary control of a digital micromirror device to measure a transmission matrix of a fiber bundle and to subsequently control mode mixing among individual fibers. In doing so, we achieved a 22 kHz scanning rate of a diffraction-limited focused spot and obtained fluorescence endoscope imaging (58 μm × 58 μm) with near video-rate (10.3 Hz) acquisition. Our study lays a foundation for developing an ultrathin and high-resolution microendoscope.",

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AU - Kim, Jaisoon

AU - Chung, Euiheon

AU - Choi, Wonshik

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AB - A fiber bundle is widely used for endoscopic imaging due to its direct image delivery capability. However, there exists an inevitable pixelation artifact, which limits spatial resolution to the diameter of individual fibers. In this Letter, we present a method that can eliminate this artifact and achieve diffraction-limited spatial resolution. We exploited the binary control of a digital micromirror device to measure a transmission matrix of a fiber bundle and to subsequently control mode mixing among individual fibers. In doing so, we achieved a 22 kHz scanning rate of a diffraction-limited focused spot and obtained fluorescence endoscope imaging (58 μm × 58 μm) with near video-rate (10.3 Hz) acquisition. Our study lays a foundation for developing an ultrathin and high-resolution microendoscope.

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Toward a miniature endomicroscope: Pixelationfree and diffraction-limited imaging through a fiber bundle

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