• Photonics Research
  • Vol. 9, Issue 8, 08001470 (2021)
Youpeng Xie1, Ting Lei1, Dawei Wang2, Jianxin Ren3, Yanmeng Dai1, Yanjun Chen2, Luping Du1, Bo Liu3、4、*, Zhaohui Li2、5、*, and Xiaocong Yuan1、6、*
Author Affiliations
  • 1Nanophotonics Research Centre, Shenzhen University, Shenzhen 518060, China
  • 2State Key Laboratory of Optoelectronic Material and Technologies and School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, China
  • 3Institute of Optics and Electronics, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 4e-mail: bo@nuist.edu.cn
  • 5e-mail: lzhh88@mail.sysu.edu.cn
  • 6e-mail: xcyuan@szu.edu.cn
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    Abstract

    Stokes vector direct detection is a promising, cost-effective technology for short-distance communication applications. Here, we design and fabricate a spin-dependent liquid crystal grating to detect light polarization states. By separating the circular and linear components of incident light, the polarization states can be resolved with accuracy of up to 0.25°. We achieved Stokes vector direct detection of quadrature phase-shift keying (QPSK), 8PSK, and 16-ary quadrature amplitude modulation signals with 32, 16, and 16 GBd rates, respectively. We integrated the system, including the grating, photodetectors, and optical elements, on a miniaturized printed circuit board and demonstrated high-speed optical communications with 16 GBd rate QPSK signals.
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    Youpeng Xie, Ting Lei, Dawei Wang, Jianxin Ren, Yanmeng Dai, Yanjun Chen, Luping Du, Bo Liu, Zhaohui Li, Xiaocong Yuan. High-speed Stokes vector receiver enabled by a spin-dependent optical grating[J]. Photonics Research, 2021, 9(8): 08001470
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    Category: Fiber Optics and Optical Communications
    Received: Dec. 7, 2020
    Accepted: Apr. 13, 2021
    Posted: May. 27, 2021
    Published Online: Jul. 19, 2021
    The Author Email: Bo Liu (bo@nuist.edu.cn), Zhaohui Li (lzhh88@mail.sysu.edu.cn), Xiaocong Yuan (xcyuan@szu.edu.cn)