Dynamical power-equalized fiber laser arrays using strain-tunable pump reflectors

By using strain-tunable gratings as pump reflectors for power equalization, both the parallel and serial types, pump-shared linear cavity laser arrays are produced. A 11-channel, parallel type fiber laser arrays are used to s imulate the feasibility. After the central reflected wavelengths of these p ump reflectors are appropriately adjusted, the maximum power variation amon g channels is reduced from 7.2- to 0.1 dB and the average output power is n early 100% increased. (C) 2000 Elsevier Science Ltd. All rights reserved.