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Non-destructive testing device for transmission loss of plastic optical fibre

A technology of plastic optical fiber and transmission loss, which is applied in the direction of testing optical performance, etc. It can solve the problems of inability to detect the transmission loss of plastic optical fiber online, and achieve good stability and reliability, low environmental requirements, and high optical coupling efficiency.

Inactive Publication Date: 2012-09-12
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0004] The invention provides a non-destructive detection device for plastic optical fiber transmission loss, which mainly solves the problem that the existing detection device must cut off the plastic optical fiber to detect and cannot perform online detection of the plastic optical fiber transmission loss

Method used

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  • Non-destructive testing device for transmission loss of plastic optical fibre
  • Non-destructive testing device for transmission loss of plastic optical fibre
  • Non-destructive testing device for transmission loss of plastic optical fibre

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Embodiment Construction

[0028] Principle of the present invention is as follows:

[0029] At the two nodes of any appropriate length of plastic optical fiber on the continuously running production line, the optical energy is injected and extracted efficiently respectively, and the optical power information of sufficient intensity can be detected by the optical power meter, and the extracted optical power information is used Obtain the transmission loss coefficient of the fiber. At the same time, this scheme couples the light energy outside the fiber cladding to the fiber core through the fiber cladding, and then extracts the optical signal in the fiber core through the cladding to extract the fiber. The fiber does not need to be cut off during the entire measurement process, and it will not be damaged. , damage the plastic optical fiber, thus realizing the non-destructive, real-time and online measurement of optical fiber transmission loss.

[0030] Below in conjunction with specific technical schem...

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Abstract

The invention provides a non-destructive testing device for transmission loss of a plastic optical fibre, mainly solving the problems that a conventional testing device can only detect by cutting off the plastic optical fibre, and the transmission loss of the plastic optical fibre cannot be subjected to online detection. The non-destructive testing device for transmission loss of the plastic optical fibre comprises a light source for emitting a light signal into the tested plastic optical fibre, and a light injection module, a light extraction module and a data collecting device which are sequentially arranged along the light transmission direction of the emergent light of the light source, wherein the data collecting device is used for recording optical power of the radiated plastic optical fibre. The device does not generate any damage or injury to the optical fibre in the processes of injecting light and extracting light without cutting off the optical fibre, thereby achieving non-destructive measurement.

Description

technical field [0001] The invention relates to a plastic optical fiber transmission loss non-destructive detection device, which can realize the non-destructive detection of the plastic optical fiber transmission loss, and can also be directly applied to the material optical fiber production line to realize the online non-destructive detection of the plastic optical fiber transmission loss. Background technique [0002] The transmission loss coefficient of plastic optical fiber is an important parameter to measure the quality of plastic optical fiber, but there are not many means to measure it at present. As mentioned in the document "Discussion on the Attenuation Test Method of Plastic Optical Fiber", there are three main measurement methods: truncation method, insertion loss method and backscattering method. Among them, there is a measuring instrument based on the truncation method on the market (FibKey WF6803 of Beijing Wanfeng Tongda Company), but none of the above meth...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 任立勇林霄
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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