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All-fiber wavelength-swept laser near 2 µm

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All-fiber wavelength-swept laser near 2 µm

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  • Author: Jihong Geng, Qing Wang, Jiafu Wang, Shibin Jiang, Kevin Hsu
We report, for the first time to our knowledge, an all-fiber wavelength-swept Tm-doped laser based on a fiber Fabry– Perot tunable filter in the 2 μm spectral region. The laser wavelength can be continuously tuned over 200 nm from 1840 to 2040 nm in a short period of time. The demonstrated tuning speed was 12:5 μm=s with a tuning efficiency of 17:5 nm=V. The spectral linewidth of the laser was measured to be approximately 300 MHz. Laser sources near 2 μm based on Tm3þ and Ho3þ ions have attracted intense interest in recent decades for their potential applications.

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