Bismuth (Bi)-ion doped silica fiber is a new type of active fiber having a gain spectrum at 1100-1400 nm [1,2]. Recently, we have demonstrated a mode-locked Bi-doped fiber laser operating in the soliton regime using a grating pair dispersion compensator [3]. In this work, we demonstrate the first mode-locked Bi-doped all-fiber laser with dispersion compensation provided by a linearly chirped fiber Bragg grating (CFBG). The laser, with a compact and low-loss all-fiber cavity, delivers ~2 ps pulses at a wavelength of ~1.17 μm. The repetition rate of the pulses can be tuned from ~6.3 MHz to ~100.6 MHz by operating the laser at different harmonics of the fundamental frequency of the laser cavity.

© 2009 IEEE

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