Abstract
We present an experimental and computing analysis of the nonlinear
distortions of an all-optical radiofrequency mixer based on cross-gain
modulation (XGM) in a semiconductor optical amplifier (SOA). Such an
all-optical mixer is well suited for radio-over-fiber (RoF) applications.
The simulation results are based on a SOA model developed under
ADS™ software and are compared to experimental results in various
cases. The good correlation between experimental and simulation results
permits to demonstrate the ability of our SOA model to study mixing
phenomenon by using a Harmonic Balance (HB) simulation method. Optical
third-order input intercept point (IIP3) and its electrical equivalent are
determined experimentally and by simulation with a good concordance. An
optical IIP3 of -5 dBm and a spurious free dynamic range (SFDR) of 85.7 dB/Hz<sup>2/3</sup> are obtained for a radiofrequency signal at 1 GHz. Moreover,
simulations show that the IIP3 increases, all other parameters being equal,
when the SOA active zone is
shortened.
© 2011 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