Testing method for optical fiber

Details Testing method for optical fiber Testing method for optical fiber

1998-03-27

1999-08-03

Pham, Hoa Q.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2100

Patent

active

059332271

ABSTRACT:
A testing method for an optical fiber is disclosed which is able to measure a loss distribution and a loss at a connection point based on a received first light signal waveform. The method comprises a step of extracting and storing the duration of the first light signal waveform when the difference of the level between the start and the end of the waveform from the specified starting point exceeds the specified criterion, a step of generating a second light signal waveform by adding the fixed values corresponding to each of the duration of the extracting result mentioned above, a step of judging if a value of connection loss calculated using the first light signal waveform exceeds the specified criterion and a step of decision of a point exceeding the criterion specified above is a discontinuous point existing in the optical fiber to be tested.

REFERENCES:
patent: 5731869 (1998-03-01), Minami

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