Fiber coupled laser source pump with wavelength division multiplexer

A pump laser package may include an input fiber to send signal light on a first optical path. A first lens may be arranged on the first optical path. The pump laser package may include a source to send pump light on a second optical path. A second lens and a negative lens may be arranged on the second optical path. The first lens and the negative lens may be arranged to create a virtual image associated with the pump light. The pump laser package may include an output fiber on a third optical path. The first lens may be arranged on the third optical path. The pump laser package may include a combiner to receive the signal light on the first optical path, receive the pump light on the second optical path, and send the signal light and the pump light on the third optical path. 种泵浦激光器封装体，可包括在第光路上发送信号光的输入光纤。第透镜可布置在该第光路上。该泵浦激光器封装体可包括在第二光路上发送泵浦光的源。第二透镜和负透镜可布置在该第二光路上。该第透镜和该负透镜可布置为产生与该泵浦光相关的虚像。该泵浦激光器封装体可包括在第三光路上的输出光纤。该第透镜可布置在该第三光路上。该泵浦激光器封装体可包括在该第光路上接收该信号光、在该第二光路上接收该泵浦光，并且在该第三光路上发送该信号光和该泵浦光的组合器。