| 摘要 |
PROBLEM TO BE SOLVED: To accurately adjust the connection loss of a welding connection part by measuring the correlation of a push-in amount at the time of optical fiber welding connection and the connection loss of a welding connection part beforehand and controlling the push-in amount based on it. SOLUTION: The correlation of a push-in amount and a connection loss in the welding connection of an optical fiber is in a relation which is qualitatively approximates almost secondary curve and the connection loss decreases as the push-in amount increases and thereafter increases. The correlation is different by the kind of a coated optical fiber quantitatively but the correlation is almost fixed for the same optical fiber. Therefore, the correlation is quantitatively measured for the individual every optical fibers and the push-in amount required of realizing the prescribed connection loss is determined from the correlation. By controlling the push-in amount, the required connection loss of the welding connection part is realized accurately. Also, the push-in amount is simply and easily performed by push-in control in the normal welding connection. |
