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Frequency synthesis-based optical frequency domain reflectometry method and system

  • US 10,461,850 B2
  • Filed: 01/05/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 01/05/2016
  • Status: Active Grant
First Claim
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1. A frequency synthesis-based optical frequency domain reflectometry method to implement optical frequency reflectometry, comprising:

  • performing an electro-optic modulation and an acousto-optic modulation on a local light to obtain an optical pulse;

    inputting the optical pulse as a detection pulse optical signal to a test optical fiber; and

    detecting an obtained Rayleigh backscattered optical signal under coherent detection with the local light, and then performing a photoelectric conversion and a demodulation, wherein;

    the electro-optic modulation is performed by using a single frequency signal;

    the acousto-optic modulation is performed by using a pulse signal; and

    the optical pulse is obtained by simultaneously sweeping multiple frequency components of an optical comb signal which is obtained by the electro-optic modulation.

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