Abstract
We analyze an active mode-locked laser under the influence of asynchronous
spontaneous emission (ASE) noise by using eight mathematical series ${\rm S} _{n}$, ${\rm Q} _{n}$, ${\rm
R} _{n}$, ${\rm a}_{n}$, ${\rm b} _{n}$, ${\rm c} _{n}$, ${\rm r} _{n}$, and ${\rm
P} _{n}$ to trace the evolution of the noise. The series are
easily calculated from the laser parameters and are used to determine the
steady-state pulse of the active mode-locked laser operating in both exactly
tuned and detuned conditions. Series analysis results of ideal noiseless laser
models are consistent with that of classical self-consistence methods. The
advantage of our series approach is that it can be used for studying laser
model even in the presence of the inline optically amplified noise. Analysis
of the laser model with ASE noise reveals that the large noise figure amplifier
and high cavity loss degrade the signal-to-noise ratio (SNR). Large decrease
of SNR caused by detuning limits the locking range of the laser. The series
method can be used not only to determine the characteristics of the steady
state pulse but also to study the transient process of the noise inside the
laser and to determine the locking range of the laser when the ASE noise is
considered. Our analytical results are visualized by simulation results.
© 2008 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription