Stable and continuous wavelength tuning of a hybrid semiconductor laser with an erbium-doped fiber external cavity.
We present an experimental study of tuning characteristics and wavelength stability of a 1490 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.
Liu
Runnan
R
Department of Engineering Physics, Ecole Polytechnique de Montréal, Canada.
Kostko
Irina A
IA
Wu
Ke
K
Kashyap
Raman
R