Automatic gain control for Raman fiber amplifiers

2002 ◽  
Author(s):  
Jingping Ning ◽  
Xiaochun Lu ◽  
Zhiqiang Chen
Keyword(s):  
Automatic Gain Control ◽  
Gain Control ◽  
Fiber Amplifiers ◽  
Raman Fiber Amplifiers

scholarly journals Measuring Current in a Power Converter Using Fuzzy Automatic Gain Control

2021 ◽  
Vol 11 (13) ◽  
pp. 5793
Author(s):  
Bartosz Dominikowski
Keyword(s):  
High Resolution ◽  
Fuzzy Controller ◽  
Automatic Gain Control ◽  
Gain Control ◽  
Measurement Range ◽  
Power Converter ◽  
Current Measurement ◽  
Dc Power ◽  
Programmable Gain ◽  
Electric Loads

The accuracy of current measurements can be increased by appropriate amplification of the signal to within the measurement range. Accurate current measurement is important for energy monitoring and in power converter control systems. Resistance and inductive current transducers are used to measure the major current in AC/DC power converters. The output value of the current transducer depends on the load motor, and changes across the whole measurement range. Modern current measurement circuits are equipped with operational amplifiers with constant or programmable gain. These circuits are not able to measure small input currents with high resolution. This article proposes a precise loop gain system that can be implemented with various algorithms. Computer analysis of various automatic gain control (AGC) systems proved the effectiveness of the Mamdani controller, which was implemented in an MCU (microprocessor). The proposed fuzzy controller continuously determines the value of the conversion factor. The system also enables high resolution measurements of the current emitted from small electric loads (≥1 A) when the electric motor is stationary.

Correction to "pump to signal RIN transfer in Raman fiber amplifiers"

2002 ◽  
Vol 20 (2) ◽  
pp. 316-316 ◽  
Author(s):  
C.R.S. Fludger ◽  
V. Handerek ◽  
R.J. Mears
Keyword(s):  
Fiber Amplifiers ◽  
Raman Fiber Amplifiers

Dual cavity optical automatic gain control for EDFAs

2003 ◽  
Author(s):  
M.F. Krol ◽  
Yongqian Liu ◽  
J.J. Watkins ◽  
D.W. Lambert
Keyword(s):  
Automatic Gain Control ◽  
Gain Control
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