Author:
Zhao Pengcheng,Krishnaiah Kummara Venkata,Guo Linhao,Li Taige,Ho Hoi Lut,Zhang A. Ping,Jin Wei
Abstract
We report a miniature fiber-optic photothermal gas sensor based on a Fabry-Pérot microcavity directly 3D µ-printed on the end-face of a standard single-mode optical fiber. A detection limit of 0.4 parts-per-million for acetylene is demonstrated.