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Opt Express. 2010 Aug 30;18(18):18906-11. doi: 10.1364/OE.18.018906.

All-fiber passively mode-locked femtosecond laser using a 45º-tilted fiber grating polarization element.

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Photonics Research Group, School of Engineering and Applied Science, Aston University, Birmingham, UK.


We report on the demonstration of an all-fiber femtosecond erbium doped fiber laser passively mode-locked using a 45º tilted fiber grating as an in-fiber polarizer in the laser cavity. The laser generates 600 fs pulses with output pulse energies ~1 nJ. Since the 45° tilted grating has a broad polarization response, the laser output has shown a tunabilty in wavelength from 1548 nm to 1562 nm by simply adjusting the polarization controllers in the cavity.

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