Abstract
In this study, a phase-preserving limiter based on injection locking a
semiconductor laser is fully investigated as an amplitude limiter for 10
Gb/s constant envelope phase encoded signals. A theoretical analysis on the
modulation bandwidth and the modulation transfer function of the injection
locked laser is carried out targeting to identify the operational
characteristics and the regeneration properties of the proposed amplitude
limiter. The theoretical analysis demonstrates the potential of the specific
limiter to amplify 25 Gbaud phase modulated signals with simultaneous
regeneration of its amplitude properties. Subsequently an experimental
investigation demonstrates the performance of the proposed regenerator and
addresses its potential exploitation in future optical networks. The
specific limiter exhibits significant amplitude noise squeezing capability
and extreme implementation simplicity.
© 2011 IEEE
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