Generation of dark pulse using fiber laser and mode-locking technique

Fiber laser gained recognition in various fields of research in recent years. Its ease of realization, compactness and a large number of advantages facilitate its numerous field of applications. Therefore, the pulsed operation has been widely investigated and the result evidenced for the fiber laser as efficient tools for the study of pulse evolution. The pulse evolution came up with the idea for understanding the dynamics in fiber lasers. Experimentally it is found that, under appropriate conditions and with a polarizer in the cavity apart from the bright pulse the fiber could emit single or multiple dark pulses. It can be explained based on numerical simulation that the dark pulse generation in the fiber laser is an outcome of the creation of the dark soliton using mode-locking technique.