Extremely Increasing the Operating Frequency Range of Mode-Locked Hybrid Soliton Pulse Source

Numerical simulations show that proper fundamental mode-locking repetition range of hybrid soliton pulse source where transform-limited pulses are obtained is extremely increased with the use of linearly chirped tanh apodized fibre Bragg grating. Near transform-limited pulses are generated over a frequency range of 1.6GHz (1.9--3.4GHz) around a system operating frequency of 2.5GHz.