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2023, 2(2) Column

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Opto-Electronic Science 第2卷 第2期

Xin Liu 1,2Qian Chen 1,2Jun Zeng 1,2,*Yangjian Cai 1,2,**Chunhao Liang 1,2,***
Author Affiliations
Abstract
1 Shandong Provincial Engineering and Technical Center of Light Manipulation & Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
2 Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
The optical coherence structures of random optical fields can determine beam propagation behavior, light–matter interactions, etc. Their performance makes a light beam robust against turbulence, scattering, and distortion. Recently, we proposed optical coherence encryption and robust far-field optical imaging techniques. All related applications place a high demand on precision in the experimental measurements of complex optical coherence structures, including their real and imaginary parts. Past studies on these measurements have mainly adopted theoretical mathematical approximations, limited to Gaussian statistic involving speckle statistic (time-consuming), or used complicated and delicate optical systems in the laboratory. In this study, we provide: a robust, convenient, and fast protocol to measure the optical coherence structures of random optical fields via generalized Arago (or Poisson) spot experiments with rigorous mathematical solutions. Our proposal only requires to capture the intensity thrice, and is applicable to any optical coherence structures, regardless of their type or optical statistics. The theoretical and experimental results demonstrated that the real and imaginary parts of the structures could be simultaneously recovered with high precision. We believe that such a protocol can be widely employed in phase measurement, optical imaging, and image transfer.
optical coherence statistical optics Arago spot optical encryption optical imaging 
Opto-Electronic Science
2023, 2(2): 220024
Author Affiliations
Abstract
1 Guangdong Key Laboratory of Integrated Optoelectronics Intellisense, Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen 518055, China
2 Institute for Infocomm Research (I2R), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, #21-01, Connexis South Tower, Singapore 138632, Singapore
3 School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
4 School of Optical and Electronic Information, National Engineering Laboratory for Next Generation Internet Access System, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
5 Key Laboratory of Bionic Engineering of Ministry of Education, Jilin University, Changchun 130022, China
6 Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
7 Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
8 Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen 518107, China
9 Guangdong Provincial Key Laboratory of Information Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
10 Department of Electrical & Computer Engineering, Boston University, Boston 02215, USA
11 Pengcheng Laboratory, Shenzhen 518055, China
Optical fiber technology has changed the world by enabling extraordinary growth in world-wide communications and sensing. The rapid development and wide deployment of optical fiber sensors are driven by their excellent sensing performance with outstanding flexibility, functionality, and versatility. Notably, the research on specialty optical fibers is playing a critical role in enabling and proliferating the optical fiber sensing applications. This paper overviews recent developments in specialty optical fibers and their sensing applications. The specialty optical fibers are reviewed based on their innovations in special structures, special materials, and technologies to realize lab in/on a fiber. An overview of sensing applications in various fields is presented. The prospects and emerging research areas of specialty optical fibers are also discussed.
specialty optical fibers photonic crystal fiber multifunctional multi-material fibers lab in/on fiber 
Opto-Electronic Science
2023, 2(2): 220025