Plasma-induced shaping of liquid-based polymer lenses

Gerhard, Christoph; Mielke, Gerrit; Beste, Lucas-Hermann; Tasche, Daniel

doi:10.1117/12.2594607

Cited by 1 publication

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“…The change of the curvature radius and conic coefficient of the lens can realize the collimation and focusing of light. This simulation shows that this hydrogel fiber lens has good focus performance 5 and it is expected to be used in the imaging and detection of miniaturized instruments in the fields of environment, industry, biology and medicine in the future.…”

Section: Introductionmentioning

confidence: 89%

Zemax-based optimized design of hydrogel fiber lens

Xie

Liu

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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In the optical fiber sensor, the signal light output from the silica fiber is transmitted to the detector, which usually needs to be coupled through the lens focusing. However, this often destroys the compactness and flexibility of the optical fiber sensor system structure. Therefore, this article proposes a hydrogel fiber optic lens solution, that is, a method that can directly focus the signal light output from the silica fiber to the photodetector. Its bottom-up photochemical fixation method determines its flexible characteristics and can meet individual needs. In this article, according to the size of the image distance, that is, the distance from the silica fiber to the detector (image distance), and the size of the focus point on the detector (focal point), the curvature radius of the polyethylene glycol diacrylate (PEGDA)-based hydrogel fiber lens and the distance from its apex to the silica fiber end face (object distance) are optimized. Through simulation, it finds that, with the decrease in the curvature radius, the focus point of the hydrogel fiber lens would appear at a shorter image distance and the change in the object distance length would not significantly affect the position of the focus point of the lens. The focus point of the lens focusing on the central bright spot decrease with the decrease in the curvature radius, which is consistent with the variation trend of the Airy spot in the simulation. This simulation confirms that a smaller curvature radius could be able to improve the focusing effect of the hydrogel fiber lens.

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Section: Introductionmentioning

confidence: 89%