Fibre core loss measuring method and system of heterogeneous optical fiber fusion welding point

A measurement method and measurement system technology, applied in the direction of testing optical performance, etc., can solve the problems of insufficient measurement and estimation accuracy, loss, etc., and achieve the effect of high precision and wide application range

Inactive Publication Date: 2012-06-20
STARWAY LASER
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Problems solved by technology

[0004] The disadvantages of the above methods are that either the loss can only be measured at the mu

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  • Fibre core loss measuring method and system of heterogeneous optical fiber fusion welding point
  • Fibre core loss measuring method and system of heterogeneous optical fiber fusion welding point
  • Fibre core loss measuring method and system of heterogeneous optical fiber fusion welding point

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Embodiment Construction

[0026] The preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0027] The method for measuring the core loss of the heterogeneous optical fiber fusion point of the present invention firstly takes two different types of optical fibers, respectively connects light sources to one end of the two optical fibers, and connects an optical power meter to the other end of the two optical fibers, which completes the test system. build. During the whole test process, keep the connection between the optical fiber and the light source and the connection between the optical fiber and the optical power meter unchanged, and at the same time keep the optical output power of the two light sources unchanged. First, read the optical power value when the two optical fibers are directly connected; The first direct-connected optical fiber is cut off, and the cross-splicing is performed at the break point to form two dissimilar op...

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Abstract

The invention relates to a fibre core loss measuring method and system of a heterogeneous optical fusion welding point. The loss measuring system mainly consists of two light sources and two optical power meters. The fibre core loss measuring method comprises the following steps of: respectively connecting the light source to one end of each of different types of optical fibres, respectively connecting the optical power meter to the other end of each of the different types of the optical fibres, and obtaining optical power values Ra and Rb when the two optical fibers are directly connected; keeping the connection between the optical fibre tips and the optical power meters unchanged and the output power of the light sources unchanged, respectively cutting off the two optical fibers from the middle parts and carrying out fusion welding in a crossed way, and reading numerical reading of the optical power meters again to obtain optical power values Ras and Rbs after crossed fusion welding; and obtaining the average loss: [(Ra+Rb)-(Ras+Rbs)]/2 at the heterogeneous optical fiber fusion welding point through calculating according to the measured data. The fibre core loss measuring method is simple and effective, and has high precision and active roles and can be used for effectively measuring and estimating the fusion welding loss of different types of optical fibres.

Description

technical field [0001] The invention relates to a method for measuring fiber core loss at an optical fiber fusion splicing point (abbreviated as splicing loss), in particular to measuring the core loss at a splicing point of dissimilar optical fibers. Background technique [0002] We know that in various optical fiber systems such as optical sensors and fiber lasers, the fusion loss of optical fibers is an important factor affecting system performance. Accurate measurement of splice loss plays an important role in evaluating and improving the performance of fiber optic systems. At present, the detection of splicing loss can be carried out by optical time domain reflectometer (OTDR), which is judged by transmitting light pulses in optical fibers to observe the degree of reflected light. Since light not only reflects at the fusion joint, but also has scattering and absorption, there is a large difference between the loss of the fusion joint and the actual loss only by measuri...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 周胜
Owner STARWAY LASER
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