南方科技大学知识苑(SUSTech KC): Spatial mode demodulation of multimode interference sensors by a “fiber camera”

题名	Spatial mode demodulation of multimode interference sensors by a “fiber camera”
作者	Qin Liang 1; Hongjie Cao 1; Jiajun He 1; Hongming Tian 1; Wenjun Zhou 1; Chunliu Zhao 1; Yanghui Li 1; Juan Kang 1; Le Wang 1; Liyang Shao2 ; Xiaoyi Bao 3; Yi Li 1
发表日期	2024
DOI	10.1109/JLT.2024.3413173
发表期刊	Journal of Lightwave Technology 影响因子和分区
ISSN	1558-2213
卷号	PP 期号:99
摘要	Interference due to transverse mode phase differences is the fundamental principle of multimode fiber sensors. Traditional demodulation methods based on spectral domain have limited sensitivity and accuracy due to spectral resolution constraints. To overcome this limitation, we propose a new sensing approach that maps the intermodal interference in spatial domain. We achieve this by sparsely sampling the fiber transverse mode field distribution (MFD) via a multi-core single-mode fiber (MCF), which acts as a cost-effective “fiber camera”. Additionally, spatial mode modulation was introduced to selectively excite different modes in the sensor. By switching the launching cores, different excited modes respond differently for a given environmental perturbation, resulting in a significant improvement in sensing resolution by up to 20 times. Multiplexing of sensor head offers a solution to cross-sensitivity by leveraging different core excitations. The discrimination of temperature and refractive index was demonstrated by use of a deep learning algorithm. Our spatial mode demodulation scheme presents exciting possibilities for low-cost, highly sensitive, and fast MMI sensors.
相关链接	[IEEE记录]
收录类别	EI
学校署名	其他
ESI学科分类	ENGINEERING
引用统计
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/778465
专题	工学院_电子与电气工程系
作者单位	1.Department of Optical and Electronic Technology, China Jiliang University, Hangzhou, China 2.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China 3.Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
推荐引用方式 GB/T 7714	Qin Liang,Hongjie Cao,Jiajun He,等. Spatial mode demodulation of multimode interference sensors by a “fiber camera”[J]. Journal of Lightwave Technology,2024,PP(99).
APA	Qin Liang.,Hongjie Cao.,Jiajun He.,Hongming Tian.,Wenjun Zhou.,...&Yi Li.(2024).Spatial mode demodulation of multimode interference sensors by a “fiber camera”.Journal of Lightwave Technology,PP(99).
MLA	Qin Liang,et al."Spatial mode demodulation of multimode interference sensors by a “fiber camera”".Journal of Lightwave Technology PP.99(2024).