Bidirectional multi-core optical fiber crosstalk calculation method and device and computer readable storage medium

Abstract

The invention discloses a bidirectional multi-core optical fiber crosstalk calculation method and device and a computer readable storage medium. The multi-core optical fiber comprises a first fiber core and a second fiber core. The method comprises the following steps: if the power reflection coupling amount of the reflection amount of the second fiber core at the first fiber core and the energy coupling reflection amount of the second fiber core at the first fiber core are the same at the starting end of the optical fiber, taking two times of the energy coupling reflection amount of the second fiber core at the reflection amount value of the first fiber core as the reflection energy value of the first fiber core at the starting end of the optical fiber; dividing the multi-core optical fiber into a plurality of sections of sub-optical fibers with the same length, and carrying out segmentation processing on propagation constant difference information determined based on the propagationconstant in the fiber core, the longitudinal disturbance factor and the fiber core interval; and calculating the reflection power of the corresponding segment of sub-optical fiber based on the segmented propagation constant difference information, and calculating the crosstalk amount of the multi-core optical fiber in the bidirectional transmission process according to the cumulative sum of the reflection power of each sub-optical fiber, thereby realizing accurate calculation of the crosstalk of the multi-core optical fiber in the bidirectional transmission process.

Description

technical field [0001] The present application relates to the technical field of optical fiber crosstalk calculation, in particular to a bidirectional multi-core optical fiber crosstalk calculation method, device and computer-readable storage medium. Background technique [0002] Since the information transmission capability of single-core single-mode fiber is limited by nonlinear factors and fiber loss, it cannot meet the needs of modern communications, and the application of multi-core fiber (MCF) with efficient spectrum and space utilization is born. . [0003] For multi-core fibers, the transmission signals in adjacent cores will be coupled to generate crosstalk (crosstalk, XT), which will affect the signal transmission performance and reduce the capacity of information transmission. Accurate evaluation of XT is very important to solve the MCF transmission problem. In the actual MCF signal transmission process, the random progress of XT depends on random disturbances, s...

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Problems solved by technology

However, the XT obtained by directly solving the power coupling equations b Appears as XT in homogeneous MCF b The average value cannot show the phase shift caused by random disturbance, which deviates from the actual two-way transmission, and it cannot truly reflect the loss of remote information transmission and other issues.

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