Experimental device for measuring numerical apertures and attenuation coefficients of light-guide fibers

A technology of experimental equipment and numerical aperture, applied in the direction of testing optical performance, etc., can solve the problems of complex steps, long testing time, and inefficient use of instruments and equipment, and achieve the effect of easy integration and simplification of the testing process.

Active Publication Date: 2014-02-05
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There are many measuring devices, the steps are complicated, t

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  • Experimental device for measuring numerical apertures and attenuation coefficients of light-guide fibers
  • Experimental device for measuring numerical apertures and attenuation coefficients of light-guide fibers
  • Experimental device for measuring numerical apertures and attenuation coefficients of light-guide fibers

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Embodiment Construction

[0034] figure 1 and figure 2 The working schematic diagrams of an embodiment of the present invention in numerical aperture mode and attenuation coefficient mode are respectively shown.

[0035] Such as figure 1 As shown, the experimental equipment of this embodiment includes: light source ( figure 1 Only the light beam 1) emitted by the light source, focusing device 2, multiple light intensity sensors 4, 7, 10 and 14, collimator 5, light-shielding box 8, half mirror 9, processor 11, angle Sensor 12 , first actuating means 17 , second actuating means 16 . figure 1 Also shown in the diaphragm 3, the wire 15. Those skilled in the art should understand that the diaphragm 3 can be omitted if the focusing effect of the focusing device 2 is good enough.

[0036] Because the experimental equipment among the present invention will take into account both the mensuration of optical fiber numerical aperture and attenuation coefficient, therefore, during measurement, will adopt ...

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Abstract

The invention provides an experimental device for measuring the numerical apertures and the attenuation coefficients of light-guide fibers. The experimental device comprises a light source, a focusing device (2), a plurality of light intensity sensors, a collimator (5), a shading box (8), a semi-reflexivity semi-transparent lens (9), a processor (11), an angle sensor (12), a first actuating device (16) and a second actuating device (17). The experimental device measures a first optical fiber (6) to be measured and a second optical fiber (14) to be measured which are the same in structure and different in length. The experimental device has two working modes, namely the numerical aperture mode and the attenuation coefficient mode, is capable of being conveniently switched between the two modes, and then measures the numerical apertures and the attenuation coefficients of the optical fibers to be measured.

Description

technical field [0001] The invention relates to the field of parameter measurement, in particular to an experimental device for parameter measurement of an optical fiber. Background technique [0002] With the rapid development of optical communication technology, the application of optical fiber, that is, optical fiber, has become very popular. The numerical aperture characterizes the light-collecting ability of the fiber, and the attenuation coefficient reflects the transmission loss of the fiber. The accurate determination of these two parameters plays a very important role in the evaluation of the quality of the optical fiber and the determination of the transmission distance of the optical fiber communication system. In university physics experiments, two sets of instruments are usually used for measurement due to the different measurement methods and instruments of numerical aperture and attenuation coefficient. There are many measuring devices, complicated steps, lo...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 支珊王启银石慧赵锐王晓强李学勤赵飞
Owner STATE GRID CORP OF CHINA
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