Multichannel Generations of Orbital Angular Momentum Modes with On-Demand Characteristics on a Chip

Status	已發表Published
	Multichannel Generations of Orbital Angular Momentum Modes with On-Demand Characteristics on a Chip
	Fu, P.; Ni, P.N.; Wang, Q.H.; Liu, Y.F.; Wu, B.; Chen, P.P.; Kan, Q.; Wang, S.P.; Chen, H.D.; Chen, X.; Xie, Y.Y.
	2021-09-24
Source Publication	Advanced Optical Materials
ISSN	2195-1071
Pages	2101308-2101308
Abstract	The orthogonality among optical beams with different orbital angular momentum (OAM) modes presents a new perspective as independent data-carrying channels for multiplexing and demultiplexing. In particular, the theoretically infinite topological charge of OAM beam promises the unbounded capacity in communication systems. As a key part for the advancement of OAM technologies, OAM source has attracted considerable interest and experienced a rapid development. Nevertheless, conventional approaches to create OAM modes mainly rely on the use of bulky optical devices and external laser source, preventing their implementation into a miniaturized system. As a contrast, on-chip generation of OAM beams with a built-in source stands out with several advantages, including small footprint, compactness, portability, and high-power efficiency. In this work, a versatile approach to directly produce OAM modes with on-demand characteristics on a chip is demonstrated. Featuring the judicious combination of the emerging dielectric metasurface with the standard vertical cavity surface-emitting laser (VCSEL) platform, the approach represents a feasible solution to the wide implementation of wafer-level OAM emitters for optoelectronic integrations. Prototype laser chips for the generation of both individual OAM beam and OAM array with novel functionalites, such as controllable directionality and spatially varying topological charge and distribution, are systematically presented.
Keyword	Orbital angular momentum metasurface optical vortex VCSELs on-chip integration
Language	英語English
The Source to Article	PB_Publication
PUB ID	62178
Document Type	Journal article
Collection	University of Macau
Corresponding Author	Ni, P.N.; Chen, P.P.; Xie, Y.Y.
Recommended Citation GB/T 7714	Fu, P.,Ni, P.N.,Wang, Q.H.,et al. Multichannel Generations of Orbital Angular Momentum Modes with On-Demand Characteristics on a Chip[J]. Advanced Optical Materials, 2021, 2101308-2101308.
APA	Fu, P.., Ni, P.N.., Wang, Q.H.., Liu, Y.F.., Wu, B.., Chen, P.P.., Kan, Q.., Wang, S.P.., Chen, H.D.., Chen, X.., & Xie, Y.Y. (2021). Multichannel Generations of Orbital Angular Momentum Modes with On-Demand Characteristics on a Chip. Advanced Optical Materials, 2101308-2101308.
MLA	Fu, P.,et al."Multichannel Generations of Orbital Angular Momentum Modes with On-Demand Characteristics on a Chip".Advanced Optical Materials (2021):2101308-2101308.

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