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Plastic optical fiber transmission loss nondestructive detection method

A plastic optical fiber, transmission loss technology, applied in the direction of testing optical properties, etc., can solve the problems of online detection of plastic optical fiber transmission loss, etc., achieve good stability, high optical coupling efficiency, and simple design structure

Inactive Publication Date: 2012-08-22
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 method for plastic optical fiber transmission loss, which mainly solves the problem that the existing detection method must cut off the plastic optical fiber to detect and cannot carry out online detection of plastic optical fiber transmission loss

Method used

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  • Plastic optical fiber transmission loss nondestructive detection method
  • Plastic optical fiber transmission loss nondestructive detection method
  • Plastic optical fiber transmission loss nondestructive detection method

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Embodiment Construction

[0042] Principle of the present invention is as follows:

[0043] Select any section of the plastic optical fiber as the optical fiber to be tested, inject and extract optical energy efficiently at its two nodes, and ensure that the optical power information with sufficient intensity can be detected by the optical power meter, and use the extracted optical power information 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 the fiber, without truncation during the entire measurement process Optical fiber, it will not damage or damage the plastic optical fiber, so as to realize the non-destructive measurement of optical fiber transmission loss; because this method can realize the non-destructive detection of plastic optical fiber, it can be applied to the continuous opera...

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Abstract

The invention provides a plastic optical fiber transmission loss nondestructive detection method which comprises the following steps that light signal injection and light signal extraction are respectively realized by a light injection module and a light extraction module at any one section of proper length of two optical fiber nodes on a production line, wherein the light injection module and the light extraction module are respectively and mainly formed by a refractive index matching block, refractive index matching liquid and an optical fiber bending clamper; optical fiber transmission loss coefficients are obtained through treating detected optical power information; and further, the real-time measurement of the transmission loss coefficients on the production line is realized, and the all-weather online monitoring production process is realized. Meanwhile, the method has the beneficial effects that optical fibers does not need to be cut off, and no any damage can be generated to the optical fibers in the processes of light injection and light extraction, so that the nondestructive measurement can also be realized.

Description

technical field [0001] The invention relates to a method for non-destructive real-time detection of 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 methods can be applied to the production line for real-time measurement. Optical energy is injected and extracted on the cross-section of the optical fiber, and the transmission loss coefficient of the optical fiber is obtained by processing the injected an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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