Abstract

We report an actively mode-locked fiber ring laser. A simple and low-insertion-loss acousto-optic modulator driven by standing flexural waves, which couples core-to-cladding modes in a standard single-mode optical fiber, is used as an active mechanism for mode locking. Among the remarkable features of the modulator, we mention its high modulation depth (72%), broad bandwidth (187GHz), easy tunability in the optical wavelength, and low insertion losses (0.7dB). The narrowest optical pulses obtained were of 95ps time width, 21mW peak power, repetition rate of 4.758MHz, and 110mW of pump power.

© 2010 Optical Society of America

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