Stories
Slash Boxes
Comments

SoylentNews is people

Method Of Angular Momentum Multiplexing And Demultiplexing For High-Capacity Optical Communications

posted by Fnord666 on Tuesday March 24 2020, @10:19AM   Printer-friendly
from the mux-demux dept.

Arthur T Knackerbracket has found the following story:

Optical multiplexing and demultiplexing utilizing the intrinsic physical properties of light has played a crucial role in high-capacity data storage and high-speed communications.

[...] A research team led by Prof. Dr. Zhang Wenfu from Xi'an Institute of Optics and Precision Mechanics (XIOPM) of the Chinese Academy of Sciences (CAS) proposed a method for AM multiplexing and demultiplexing based on a dielectric metasurface. Employing the off-axis technique and spin photonic Hall effect, the orbital angular momentum (OAM) and spin angular momentum (SAM) multiplexing and demultiplexing can be achieved. The result was published in Advanced Optical Materials.

The OAM multiplexing and demultiplexing is via the off-axis technique and the SAM multiplexing and demultiplexing is based on the based on photonic spin Hall Effect in the anisotropic medium, which are integrated on a single-layer metasurface.

Moreover, the function of focusing for the output light has been integrated on the demultiplexer directly, which effectively improves the compactness of the system.

The proposed metadevice for AM multiplexing and demultiplexing shows a great potential for high-efficiency and high-capacity optical communication and can be integrated with other miniature system.

More information: Siqi Li et al. Efficient Optical Angular Momentum Manipulation for Compact Multiplexing and Demultiplexing Using a Dielectric Metasurface, Advanced Optical Materials (2020). DOI: 10.1002/adom.201901666

Original Submission

 
This discussion has been archived. No new comments can be posted.
Method Of Angular Momentum Multiplexing And Demultiplexing For High-Capacity Optical Communications | Log In/Create an Account | Top | 10 comments | Search Discussion
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.

  • (Score: 3, Insightful) by c0lo on Tuesday March 24 2020, @10:46AM (4 children)

    by c0lo (156) Subscriber Badge on Tuesday March 24 2020, @10:46AM (#974888) Journal

    It said:

    If Trump calls covid19 the 'Chinese Virus' one more time, we're gonna sell you a technology that increases the bandwidth of a single fibre by one or more orders of magnitude only after we're already selling the equipment for some years to everyone 'xcept US; and then the selling price will be yuuuge.

    Signed,

    Xi'an Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences

    I.e. the Chinese are juggling with COVID19, building 2 hospitals in a week, and do this without losing their balls in technological research.
    Meanwhile, the American researchers "work" from home - very likely on their grant applications; against the 2024 budget, no less, they just don't know it yet.

    --
    https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
    Starting Score:    1  point
    Moderation   +1  
       Insightful=1, Total=1
    Extra 'Insightful' Modifier   0  
    Karma-Bonus Modifier   +1  
    Total Score:   3  

  • (Score: 2) by takyon on Tuesday March 24 2020, @11:16AM (2 children)

    by takyon (881) <takyonNO@SPAMsoylentnews.org> on Tuesday March 24 2020, @11:16AM (#974902) Journal

    Publication History

    Version of Record online:
    19 February 2020
    Manuscript revised:
    18 January 2020
    Manuscript received:
    07 October 2019

    --
    [SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]

    • (Score: 2) by c0lo on Tuesday March 24 2020, @11:33AM (1 child)

      by c0lo (156) Subscriber Badge on Tuesday March 24 2020, @11:33AM (#974904) Journal

      Version of Record online:
      19 February 2020
      Manuscript revised:
      18 January 2020

      SARS-CoV-2 outbreak - Dec 2019. So at least the revision and publication were done during the outbreak.

      --
      https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford

  • (Score: 1, Touché) by Anonymous Coward on Tuesday March 24 2020, @03:59PM

    by Anonymous Coward on Tuesday March 24 2020, @03:59PM (#975041)

    Meanwhile, the American researchers Chinese researchers in America "work" from home - very likely on their grant applications; against the 2024 budget, no less, they just don't know it yet.

    FTFY... but you're right about doing grant applications. The best minds wasting their most productive years writing proposals to get money to hire cheap labor to do some actual research.