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Passive wavelength division mobile fronthaul network system

  • US 10,439,710 B2
  • Filed: 09/11/2018
  • Issued: 10/08/2019
  • Est. Priority Date: 01/25/2017
  • Status: Active Grant
First Claim
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1. A passive wavelength division mobile fronthaul network system, comprising a central office end, a remote end, and a trunk optical fiber, and further comprising a detector, a first wavelength division multiplexing apparatus, a second wavelength division multiplexing apparatus, an optical transport unit, and a reflector, wherein an optical path can be formed between the detector and the first wavelength division multiplexing apparatus, one end of the trunk optical fiber is connected to the first wavelength division multiplexing apparatus, the other end of the trunk optical fiber is connected to the second wavelength division multiplexing apparatus;

  • the optical transport unit can transmit detection light from an output end of the second wavelength division multiplexing apparatus to each branch of the remote end, and the reflector is deployed on an end of each branch of the remote end;

    further comprising a two-stage switcher and a detection device, wherein the two-stage switcher comprises a light extractor, a first-stage light switcher, a wavelength division multiplexer, and a second-stage light switcher, the light extractor is mounted on the trunk optical fiber, the first-stage light switcher receives light output by the light extractor, the wavelength division multiplexer transmits light between the first-stage light switcher and the second-stage light switcher, and the detection device receives light output by the second-stage light switcher; and

    further comprising a second splitter or a third-stage light switcher, wherein the wavelength division multiplexer receives, by using the second splitter or the third-stage light switcher, light output by the first-stage light switcher, and the second-stage light switcher receives light output by the second splitter or the third-stage light switcher.

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