Repetition rate and wavelength-tunable all-optical actively mode-locked fibre ring laser based on a reflective semi-conductor optical amplifier

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Repetition rate and wavelength-tunable all-optical actively mode-locked fibre ring laser based on a reflective semi-conductor optical amplifier

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A repetition rate- and wavelength-tunable fibre ring laser that utilises a reflective semi-conductor optical amplifier as both a gain and mode-locking element is presented. Moreover, 10.3 ps pulses at 10 GHz repetition rate are obtained across a 30 nm tuning range covering the entire C-band. The repetition rate is tunable up to 30 GHz via rational harmonic mode-locking. A comparison is made using a conventional semi-conductor optical amplifier as the gain and mode-locking element. It is shown that the reflective semi-conductor optical amplifier requires in excess of 5 dB less average pump pulse power in order to achieve the optimum mode-locking condition, for achieving the narrowest output pulse width, thereby relaxing the requirement for a complex and expensive pump pulse source.

Inspec keywords: ring lasers; optical fibre amplifiers

Other keywords: tuning range; repetition rate; reflective semiconductor optical amplifier; optimum mode-locking condition; wavelength-tunable all-optical actively-mode-locked fibre ring laser; time 10.3 ps; rational harmonic mode-locking; mode-locking element; pump pulse power; frequency 10 GHz; C-band

Subjects: Fibre lasers and amplifiers; Fibre lasers and amplifiers; Laser resonators and cavities; Laser resonators and cavities

References

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      • Connelly, M.J., O'Riordan, C.: `Simple model for optical pulse propagation in a reflective semiconductor optical amplifier', Proc. Fourth IEEE Int. Conf. Numerical Simulation of Optoelectronic Devices, 2010, p. 37–38.
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      • Q. Xu , M. Yao . Theoretical analyses on short-term stability of semiconductor fiber ring lasers. IEEE J. Quantum Electron. , 1160 - 1265
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