发明名称 |
OPTICAL AMPLIFIER CONTROLLER HAVING ADJUSTABLE SLEW-RATE LIMITER |
摘要 |
A method and apparatus is provided for controlling the optical output power from an optical amplifier arrangement. The arrangement includes a rare-earth doped fiber for imparting gain to an optical input signal propagating therethrough, a pump source for supplying pump power to the rare-earth doped fiber, and a tap for receiving a portion of the output power generated by the rare-earth doped fiber and converting it to a control signal. A controller is also provided for receiving the control signal and generating a bias current in response thereto for driving the pump source. The method begins by receiving an optical input signal that is being amplitude modulated at a prescribed frequency. The slew-rate of the controller is adjusted so that the bias current drives the pump source to generate pump power that cannot vary at a rate greater than a slew-rate limit established by the controller. In this way resonance between the input signal and the frequency of the feedback control loop can be avoided. |
申请公布号 |
CA2474664(A1) |
申请公布日期 |
2003.08.07 |
申请号 |
CA20032474664 |
申请日期 |
2003.01.28 |
申请人 |
GENERAL INSTRUMENT CORPORATION |
发明人 |
DONALDSON, CHARLES JOHN;CIAFFA, DAVID;CONVERSE, ERIC JAMES |
分类号 |
H01S3/10;H01S3/067;H01S3/13;H01S3/131;(IPC1-7):H04B10/17 |
主分类号 |
H01S3/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|