Patent ID: 6943872
Filing Date: 2005-09-13
Classification: G01M

Abstract:
1. An optical fiber selecting method for selecting an optical fiber through a use of a waveform of a power of a light beam in the time domain, the light beam being measured by inputting a pulsed light beam to an optical fiber to be selected and detecting the light beam returned from said optical fiber, the method comprising: an approximated linear line calculating step of determining an approximated linear line for said waveform; a deviation waveform calculating step of determining a deviation waveform based on a difference between said waveform and said approximated linear line; a difference value calculating step of determining a first reference value of the maximum or a local maximum of the deviation and a second reference value of the minimum or a local minimum of the deviation for said deviation waveform, and calculating a value of a difference between the first reference value and the second reference value; and a selecting step of selecting said optical fiber based on a result of a determination, the result of the determination being obtained by determining whether or not a value of a difference meets a specific condition.