Integrated (de)multiplexer for orbital angular momentum fiber communication
The quickly increasing data transfer load requires an urgent revolution in current optical communication. Orbital angular momentum (OAM) multiplexing is a potential candidate with its ability to considerably enhance the capacity of communication. However, the lack of a compact, efficient, and integrated OAM (de)multiplexer prevents it from being widely applied. By attaching vortex gratings onto the facets of a few-mode fiber, we demonstrate an integrated fiber-based OAM (de)multiplexer. A vortex grating fabricated on the fiber facet enables the direct multiplexing of OAM states at one port and the demultiplexing of OAM states at the other port. The measured bit error rate of the carrier signal after propagating through a 5-km few-mode fiber confirms the validity and effectiveness of the proposed approach. The scheme offers advantages in future high-capacity OAM communication based on optical fiber.
基金项目：National Natural Science Foundation of China (NSFC)10.13039/501100001809 (U1701661, 61427819, 61525502, 61435006, 11604218, 61601199, 61775085, 61405121); Science and Technology Innovation Commission of Shenzhen (KQCS2015032416183980, KQJSCX20160226193555889, KQTD2015071016560101, KQTD2017033011044403, ZDSYS201703031605029); Leading Talents of Guangdong Province (00201505); Natural Science Foundation of Guangdong Province10.13039/501100003453 (2016A030312010, 2017A030313351); National Key Basic Research Program of China (973) (2015CB352004).
Shecheng Gao：Nanophotonics Research Centre, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Shenzhen University, Shenzhen 518060, ChinaDepartment of Electronic Engineering, Jinan University, Guangzhou 510632, China
Ting Lei：Nanophotonics Research Centre, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Shenzhen University, Shenzhen 518060, Chinae-mail: firstname.lastname@example.org
Shengfei Feng：Department of Physics, Capital Normal University, Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, and Beijing Advanced Innovation Center for Imaging Technology, Beijing 100048, China
Yan Zhang：Department of Physics, Capital Normal University, Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, and Beijing Advanced Innovation Center for Imaging Technology, Beijing 100048, China
Fan Li：State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
Jianbo Zhang：State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
Zhaohui Li：State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, Chinae-mail: email@example.com
Xiaocong Yuan：Nanophotonics Research Centre, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Shenzhen University, Shenzhen 518060, China
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Zhenwei Xie, Shecheng Gao, Ting Lei, Shengfei Feng, Yan Zhang, Fan Li, Jianbo Zhang, Zhaohui Li, and Xiaocong Yuan, "Integrated (de)multiplexer for orbital angular momentum fiber communication," Photonics Research 6(7), 743-749 (2018)