Abstract

We present an experimental study of tuning characteristics and wavelength stability of a $1490\mathrm{nm}$ doped fiber external cavity laser. The standing wave in the erbium-doped fiber in an external-cavity laser causes spatial hole burning and absorption modulation and forms a dynamic grating. The dynamic grating can effectively suppress side modes and eliminate wavelength fluctuations in the laser. The operating wavelength of this hybrid laser is shown for the first time to our knowledge to be smoothly tunable by changing the semiconductor laser drive current or temperature.

© 2007 Optical Society of America

Side mode suppression using a doped fiber in a long external-cavity semiconductor laser operating at 1490 nm

Runnan Liu, Irina A. Kostko, Ke Wu, and Raman Kashyap
Opt. Express 14(20) 9042-9050 (2006)

Discrete wavelength tuning characteristics of a single-frequency fiber laser with dual-wavelength external frequency-stable light injection

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High-power, ultra-stable, single-frequency operation of a long, doped-fiber external-cavity, grating-semiconductor laser

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Purity of the single frequency mode of a hybrid semiconductor-fiber laser

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