| Title: | 'Optical tentacle' of suspended polymer micro-rings on a multicore fiber facet for vapor sensing |
| Author(s): | Liu Q; Zhan Y; Zhang S; Feng S; Wang X; Sun W; Ye J; Zhang Y; |
| ISSN/ISBN: | 1094-4087 (Electronic) 1094-4087 (Linking) |
| Abstract: | "We designed a new type of gas sensor, an optical tentacle, made of highly integrated polymer micro-ring resonators in three-dimensional space on the tiny end-facet of a multicore optical fiber. Two pairs of three polymer micro-ring resonators were hung symmetrically on both sides of three suspended micro-waveguides as the sensing units. The micro-waveguides interlace to form a three-layer nested configuration, which makes the multicore optical fiber a 'tentacle' for vapors of volatile organic compounds. Both experiments and theoretical simulation confirmed that the symmetrical coupling of multiple pairs of rings with the micro-waveguide had better resonance than the single ring setup. This is because the symmetrical light modes in the waveguides couple with the rings separately. All the optical micro-components were fabricated by the two-photon lithography technology on the end facet of multicore optical fiber. The optical tentacle shows good sensitivity and reversibility. This approach can also be adopted for sensor array design on a chip. Furthermore, optical sensors that can sense vapors with multiple constituents may be achieved in the future by adding selective sensitive materials to or on the surface of the rings" |
| Notes: | "PubMed-not-MEDLINELiu, Qiaoqiao Zhan, Yuxin Zhang, Siyao Feng, Shengfei Wang, Xinke Sun, Wenfeng Ye, Jiasheng Zhang, Yan eng 2020/05/15 Opt Express. 2020 Apr 13; 28(8):11730-11741. doi: 10.1364/OE.390145" |
