Optical fiber inclinometer with dynamically controllable excitation length of quantum dots liquid-core waveguide based on a photo-controlled bubble
| Autor: | Weijiang Xu, Yi Liu, Jinke Bai, Yan Li, Shiliang Qu |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Optics Letters. 48:1403 |
| ISSN: | 1539-4794 0146-9592 |
| DOI: | 10.1364/ol.483220 |
| Popis: | An ultracompact fiber inclinometer based on a bubble controlled by Marangoni force is proposed in this Letter. By coupling a 980-nm laser, the bubble can suspend in a quantum dots (QDs) liquid-core waveguide (LCW) due to the Marangoni effect. Under the excitation of a 405-nm laser, QDs LCW exhibit green emissions centered at 523 nm. When the tilt angle changes, the position of the bubble changes as well, which causes the variation of the 523-nm fluorescence intensity. The experimental results show that the sensitivity based on the peak intensity ratio (PIR) reaches 0.22/° with a linearity of 0.979 from 0° to 35°. Furthermore, the sensor has excellent stability and repeatability. |
| Databáze: | OpenAIRE |
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