Metasurface-driven polarization-division multiplexing of PCSEL for optical communications

作     者：Miao, Wen-Chien Chang, Chia-Hsun Hsiao, Fu-He Chang, Yun-Han Huang, Jhih-Hao Su, Huan-Teng Lin, Chang-Yi Lin, Chun-Liang Chow, Chi-Wai Hong, Yu-Heng Huang, Yao-Wei Kuo, Hao-Chung 

作者机构：Semiconductor Research Center Hon Hai Research Institute Taipei11492 Taiwan Department of Electrophysics College of Science National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Department of Photonics College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu30010 Taiwan 

出 版 物：《Discover Nano》 (Discov. Nano)

年 卷 期：2023年第18卷第1期

页      面：149-149页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0807[工学-动力工程及工程热物理] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work is supported by the National Science and Technology Council (NSTC) in Taiwan. We also acknowledge support from the Ministry of Education in Taiwan under the Yushan Young Scholar Program. We acknowledge the Semiconductor Research Center  Hon Hai Research Institute for their technical support. We would like to gratefully acknowledge Dr. Wei-Bin Lee and Chien-Yu Shih from Hon Hai Research Institute for their fruitful discussion and relevant technical support. This work was performed in part at the Nano Facility Center and Center for Nano Science and Technology in NYCU. We also acknowledge Taiwan Semiconductor Research Institute (TSRI) for their technical support.This work is supported by the National Science and Technology Council (NSTC) in Taiwan. We also acknowledge support from the Ministry of Education in Taiwan under the Yushan Young Scholar Program. We acknowledge the Semiconductor Research Center  Hon Hai Research Institute for their technical support. We would like to gratefully acknowledge Dr. Wei-Bin Lee and Chien-Yu Shih from Hon Hai Research Institute for their fruitful discussion and relevant technical support. This work was performed in part at the Nano Facility Center and Center for Nano Science and Technology in NYCU. We also acknowledge Taiwan Semiconductor Research Institute (TSRI) for their technical support.National Science and Technology Council in Taiwan (Grant Nos. 110-2622-8-A49-008-SB  111-2622-8-A49-021-SB  110-2112-M-A49-034-MY3  and 112-2740-M-A49-001-) 

主　　题：Photonic crystals 

摘      要：Free-space optical communications hold promising advantages, including a large bandwidth, access to license-free spectrum, high data rates, quick and simple deployment, low power consumption, and relaxed quality requirements. Nevertheless, key technical challenges remain, such as a higher transmission efficiency, a lower transmission loss, and a smaller form factor of optical systems. Here, we demonstrate the viability of circular-polarization-multiplexed multi-channel optical communication using metasurfaces alongside a photonic-crystal surface-emitting laser (PCSEL) light source at wavelength of 940 nm. Through the light manipulation with metasurface, we split the linearly polarized incidence into left and right circular polarizations with desired diffraction angles. Such orthogonal polarization states provide a paradigm of polarization division multiplexing technique for light communication. The PCSEL light source maintains a low divergence angle of about 0.373 degrees after passing through an ultra-thin metasurface without further bulky collimator or light guide, making end-to-end (E2E) and device-to-device (D2D) communications available in a compact form. Both light source and modulated polarized light exhibit a − 3 dB bandwidth over 500 MHz, with successful 1 Gbit/s transmission demonstrated in eye diagrams. Our results affirm that metasurface effectively boosts transmission capacity without compromising the light source s inherent properties. Future metasurface designs could expand channel capacity, and its integration with PCSEL monolithically holds promise for reducing interface losses, thereby enhancing efficiency. © 2023, The Author(s).