公开(公告)号：US06525870B1

公开(公告)日：2003-02-25

申请号：US09916075

申请日：2001-07-26

申请人： Si Hyung Cho ,  Jon Tsou ,  Jun Bao ,  Balakrishnan Sridhar

发明人： Si Hyung Cho ,  Jon Tsou ,  Jun Bao ,  Balakrishnan Sridhar

IPC分类号： H01S300

CPC分类号： H01S3/302 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1312 ,  H01S5/0612 ,  H01S5/146 ,  H01S2301/04

摘要： An exemplary embodiment of the invention is a Raman amplifier for use in an optical communications network. The Raman amplifier includes a plurality of pump lasers and a plurality of wavelength control modules, each associated with one of the pump lasers. Each wavelength control module includes a fiber Bragg grating optically coupled to a respective one of the plurality of pump lasers. The fiber Bragg grating receives a pump laser output from one of the pump lasers and generates a wavelength control module output. A temperature sensor is in thermal contact with the fiber Bragg grating and generates a temperature signal indicative of a temperature of the fiber Bragg grating. A controller is operatively connected to the temperature sensor and generates a control signal in response to the temperature signal. A thermal regulator is in thermal contact with the fiber Bragg grating and adjusts the temperature of the fiber Bragg grating in response to the control signal. The controller adjusts the temperature of the fiber Bragg grating to reduce sensitivity of Raman gain flatness to variation in a wavelength of the pump laser output.

摘要翻译： 本发明的示例性实施例是用于光通信网络的拉曼放大器。 拉曼放大器包括多个泵激光器和多个波长控制模块，每个波长控制模块与泵激光器之一相关联。 每个波长控制模块包括光学耦合到多个泵浦激光器中的相应一个的光纤布拉格光栅。 光纤布拉格光栅从其中一个泵浦激光器接收泵浦激光输出并产生波长控制模块输出。 温度传感器与光纤布拉格光栅热接触，并产生指示光纤布拉格光栅的温度的温度信号。 控制器可操作地连接到温度传感器并响应于温度信号产生控制信号。 热调节器与光纤布拉格光栅热接触，并根据控制信号调节光纤布拉格光栅的温度。 控制器调节光纤布拉格光栅的温度，以降低拉曼增益平坦度对泵浦激光输出波长变化的灵敏度。