Abstract
A novel scheme for the suppression of intra- wavelength-channel mode
competition in a multiwavelength SOA-based ring laser is proposed and
experimentally demonstrated. The scheme is based on coupled ring cavities,
which act as mode filters to suppress the side mode frequencies. The
proposed scheme performance is evaluated in terms the output power, long
term stability, and side-mode suppression ratio of the proposed SOA-based
ring laser. A side mode suppression ratio lager than 10 dB is readily
achieved by incorporating a subcavity inside a main ring cavity, due to
Vernier effect induced by the coupled dual cavities. Also is investigated
the possibility of the use of the noise-reduced multiwavelength laser as a
transmitter light source within wavelength division-multiplexed passive
optical network.
© 2010 IEEE
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