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Integrated tester and test method for few-mode fibers

A technology of comprehensive tester and few-mode optical fiber, which is applied in the field of few-mode optical fiber comprehensive tester and test, can solve the problems of inconvenient testing, achieve simple debugging, reduce the number of times of disassembly and assembly, and reduce the workload

Active Publication Date: 2018-02-09
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a few-mode optical fiber comprehensive tester and testing method. This solves the technical problem of multi-function and inconvenient testing under the same conditions

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  • Integrated tester and test method for few-mode fibers
  • Integrated tester and test method for few-mode fibers
  • Integrated tester and test method for few-mode fibers

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Embodiment Construction

[0044]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0045] The few-mode optical fiber comprehensive tester provided by the present invention, figure 1 As shown, it includes a light source unit, a guided mode selection unit, and an oscilloscope sequentially arranged along the optical path, and also includes a detection unit connected to the oscilloscope signal;

[0046] The working wavelength of the light source unit is adjustable, including a pul...

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Abstract

The invention discloses an integrated tester and a test method for few-mode fibers. The tester includes a light source unit, a guide mode selection unit and an oscilloscope arranged in sequence alongthe light path, and further includes a detection unit. The guide mode selection unit includes a narrow-band mode selection module and a wide-band mode selection module. The oscilloscope is used for acquiring the time-domain waveform after a tested few-mode fiber. The detection unit is used for obtaining the time-domain waveforms measured by the oscilloscope in different states according to the detection mode and calculating the differential group delay and dispersion coefficient of the tested few-mode fiber through a pulse delay approach. The method includes the following steps: (1) selectinga tested few-mode fiber, placing the tested few-mode fiber between the guide mode selection unit and the oscilloscope of the tester, and adjusting the light path to make the light path smooth; and (2)comprehensively testing the differential group delay or dispersion coefficient. The tester provided by the invention is simple and reliable, and has a high degree of integration. The test method greatly reduces the workload, and has a high degree of automation.

Description

technical field [0001] The invention belongs to the field of optical fiber testing, and more specifically relates to a few-mode optical fiber comprehensive testing instrument and testing method. Background technique [0002] Optical fiber communication systems based on single-mode fiber mainly use time division multiplexing, wavelength division multiplexing, polarization multiplexing or amplitude-phase orthogonal multiplexing to improve transmission rate and capacity. The optical fiber communication system of optical fiber has approached the Shannon limit, which has become a "bottleneck" restricting the development of optical fiber communication system in the future. [0003] Few-mode fiber is a new type of fiber that allows two or more modes of transmission. Mode division multiplexing technology based on few-mode fiber will become a way to solve the capacity bottleneck of single-mode fiber transmission system. Mode-division multiplexing technology uses different modes in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00
CPCG01M11/33
Inventor 刘亚萍沈磊陈苏孙雪婷张立岩李婧曹蓓蓓何志雄
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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