TY - JOUR
T1 - Transmission and generation of orbital angular momentum modes in optical fibers
AU - Wang, Zhuo
AU - Tu, Jiajing
AU - Gao, Shecheng
AU - Li, Zhaohui
AU - Yu, Changyuan
AU - Lu, Chao
N1 - Funding Information:
Funding: This work was supported by National Key R&D Program of China 2019YFA0706300 from Ministry of Science and Technology, China; National Natural Science Foundation of China (NSFC) (Grant No. U1701661 and U2001601); and Guangzhou basic and applied basic research Foundation (Grant No. 202002030327).
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/7
Y1 - 2021/7
N2 - The orbital angular momentum (OAM) of light provides a new degree of freedom for carrying information. The stable propagation and generation of OAM modes are necessary for the fields of OAM-based optical communications and microscopies. In this review, we focus on discussing the novel fibers that are suitable for stable OAM mode transmission and conversion. The fundamental theory of fiber modes is introduced first. Then, recent progress on a multitude of fiber designs that can stably guide or generate OAM modes is reviewed. Currently, the mode crosstalk is regarded as the main issue that damages OAM mode stability. Therefore, the coupled-mode theory and coupled-power power theory are introduced to analyze OAM modes crosstalk. Finally, the challenges and prospects of the applications of OAM fibers are discussed.
AB - The orbital angular momentum (OAM) of light provides a new degree of freedom for carrying information. The stable propagation and generation of OAM modes are necessary for the fields of OAM-based optical communications and microscopies. In this review, we focus on discussing the novel fibers that are suitable for stable OAM mode transmission and conversion. The fundamental theory of fiber modes is introduced first. Then, recent progress on a multitude of fiber designs that can stably guide or generate OAM modes is reviewed. Currently, the mode crosstalk is regarded as the main issue that damages OAM mode stability. Therefore, the coupled-mode theory and coupled-power power theory are introduced to analyze OAM modes crosstalk. Finally, the challenges and prospects of the applications of OAM fibers are discussed.
KW - Fiber mode crosstalk
KW - Optical fiber
KW - Orbital angular momentum
KW - Vortex mode generator
UR - http://www.scopus.com/inward/record.url?scp=85109873321&partnerID=8YFLogxK
U2 - 10.3390/photonics8070246
DO - 10.3390/photonics8070246
M3 - Review article
AN - SCOPUS:85109873321
SN - 2304-6732
VL - 8
SP - 1
EP - 24
JO - Photonics
JF - Photonics
IS - 7
M1 - 246
ER -