H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/00 (2006.01) H01S 3/067 (2006.01) H04B 10/08 (2006.01) H04B 10/17 (2006.01)
Patent
CA 2126404
- 9 - Abstract Fiber-Optic Amplifier with a Facility for Monitoring the Pump Power and Input Power In fiber-optic amplifiers, various parameters, such as the input power, are measured to obtain information on the operating condition of the transmission link and of the fiber-optic amplifier itself. In prior art fiber- optic amplifiers, a portion of the input power is coupled out for this purpose by means of a coupler (2). If low-power optical signals such as digital signals are transmitted, the coupled-out portion of the input power can only be detected with complicated and costly cir- cuitry. In the novel fiber-optic amplifier, the pump power and inputs power are monitored by coupling out and evaluat- ing the radiation resulting from amplified spontaneous emission (ASE). This provides information on the state of the input signal. (Fig. 1)
Bulow Henning
Otterbach Jurgen
Alcatel Sel Aktiengesellschaft
Robic
LandOfFree
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