All-optical, an ultra-thin endoscopic photoacoustic sensor using multi-mode fiber

Shabairou N, Lengenfelder B, Hohmann M, Klämpfl F, Schmidt M, Zalevsky Z (2020)

Publication Language: English

Publication Type: Journal article

Publication year: 2020

Journal

Article Number: 9142

DOI: 10.1038/s41598-020-66076-9

Abstract

Photoacoustic endoscopy (PAE) is a method of in-vivo imaging that uses tissue absorption properties. In PAE, the main tools used to detect the acoustic signal are mechanical ultrasound transducers, which require direct contact and which are difficult to miniaturize. All-optic photoacoustic sensors can challenge this issue as they can provide contact-free sensing. Here, we demonstrate sensing of photo-acoustic signals through a multimode fiber (MMF) which can provide an ultra-thin endoscopic photoacoustic sensor. Furthermore, we show the advantage of using the optical-flow method for speckle sensing and extract the photoacoustic signal despite the mode-mixing along the MMF. Moreover, it is demonstrated for the first time that the speckle reconstruction method can be used without the need for imaging of the speckles as this enables the use of multimode fibers for the speckle method.

Authors with CRIS profile

Involved external institutions

Bar-Ilan University Israel (IL)

How to cite

APA:

Shabairou, N., Lengenfelder, B., Hohmann, M., Klämpfl, F., Schmidt, M., & Zalevsky, Z. (2020). All-optical, an ultra-thin endoscopic photoacoustic sensor using multi-mode fiber. Scientific Reports. https://dx.doi.org/10.1038/s41598-020-66076-9

MLA:

Shabairou, Nadav, et al. "All-optical, an ultra-thin endoscopic photoacoustic sensor using multi-mode fiber." Scientific Reports (2020).

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