A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 μm

Koudai Harako; Masato Yoshida; Toshihiko Hirooka; Masataka Nakazawa

doi:10.1587/elex.14.20170829

This article has now been updated. Please use the final version.

A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 μm

Koudai Harako, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa

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Keywords: Mode-locked laser, erbium fiber laser

JOURNAL FREE ACCESS Advance online publication

Article ID: 14.20170829

DOI https://doi.org/10.1587/elex.14.20170829

The final version of this article is now available: Vol. 14 (2017), No. 19 pp. 20170829-20170829

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Abstract

We report a 40-GHz harmonically and regeneratively FM mode-locked erbium fiber laser with a phase-locked loop (PLL) circuit operating in the 1.6 μm region. The oscillation wavelength was extended to the L-band by using a 15 m erbium-doped fiber with an Er³⁺ concentration of 3500 ppm as a gain medium. As a result, a 770 fs transform-limited Gaussian pulse with a 14 mW output power was successfully generated with a timing jitter as low as 88 fs. The wavelength is tunable over 20 nm between 1583 and 1603 nm.

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