OPTICAL FAULT LOCATOR TESTER WHICH

Brand	Owner	Address	Description
FIBERSCAN	Dynatech	20410 Observation Drive Germantown MD 20876	optical fault locator tester which when attached to a fiber optic cable, locates breaks or faults;Fiber Scan;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A transmission system is provided that recognizes occurrence of a fault efficiently so that the workability and quality of service can be improved. An optical amplifier part amplifies an optical main signal. A fault occurrence recognizing part detects a pump light used for an opposing device via an optical fiber transmission line to which an optical main signal is sent by the repeater. If the pump light is not detected, the fault occurrence recognizing part recognizes occurrence of a fault. A light cutoff control part stops the optical amplifying part outputting an amplified signal so that the light cutoff control in only one of two directions is performed when a fault occurs.