Abstract
In single-pixel imaging (SPI) systems, the traditional free-space photodetector can be easily interfered. Its size and configuration limit its applications in complex and restricted scenarios. In this study, we develop an SPI based on optical fibers. We use a single inclined face optical fiber as an SPI detection device to realize multidimensional remote imaging in slim channels. This system is immune to interference from external ambient lights, and it is flexible to be moved and rotated to implement endoscopic observation inside various narrow spaces, such as fluid tubes and electronic device gaps. Furthermore, it can be used in medical endoscopic imaging and medical intervention therapy.
Highlights
Single-pixel imaging (SPI) requires only a single detector to reconstruct a complete image [1], [2]
The field of view (FOV) of the results is from the side of the single inclined face fiber (SIFF), and the FOV from the end face is annihilated by noise due to the long distance
We discover that using the SIFF as a detection device, multidimensional remote imaging in a narrow space can be realized, and the ability to resist interference light from the external ambient increased
Summary
Single-pixel imaging (SPI) requires only a single detector to reconstruct a complete image [1], [2]. The correlated intensity is detected on a detector without spatial resolution; subsequently, the image can be obtained using different image restoration algorithms [3]–[5]. This results in a considerable cost reduction in the present camera fabrication and a range increase in spectral imaging [3]–[5]. Slim or curved tubes, and inaccessible corners This significantly hinders the development of SPI in remote imaging, endoscopic imaging, and other related fields. Optical fibers of micrometer scale can prevent a signal from affecting the external ambient light, and their flexibility enables them to reach into interspaces for lighting [22], detection [23], [24], imaging [25]–[27], etc. Considering the advantages of small size, great flexibility, and excellent durability, our optical fiber imaging system can operate inside a small fluidic channel even at high temperatures and pressures
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