Abstract
In this work, a novel single-longitudinal-mode (SLM) four-wavelength laser configuration
for sensing applications in the L-band is proposed and experimentally demonstrated. The sensor
system presented here is based on ring resonators, and employs fiber Bragg gratings to select
the operation wavelengths. The stable SLM operation is guaranteed when all the lasing channels
present similar output powers. It is also experimentally demonstrated that when a SLM behavior
is achieved, lower output power fluctuations are obtained. Characterization of the lasing
structure for temperature sensing is also shown.
© 2011 IEEE
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