Abstract
Tunable wavelength conversion of a 10-Gb/s, return-to-zero on-off-keyed (RZ-OOK) signal has been
carried out in a silicon (Si) nanowire waveguide (Si nanowire) using a
pump-probe configuration and cross-phase modulation (XPM), followed by a
tunable filter. This filter spectrally emulated the pass-band of a
commercial 50-GHz DWDM arrayed waveguide grating (AWG). The tunability of
the wavelength conversion process was demonstrated over a range of 20 nm,
limited only by the amplifiers and the filter, while keeping the $10^{- 9}$-BER receiver sensitivity penalty of the converted signal to a
0.5-dB maximum. A comprehensive model of wavelength conversion by XPM
(XPM-WC) was developed, which took into account two-photon absorption, the
Kerr effect, and free-carrier generation. The results of the model
demonstrate good agreement with the experiment, especially with respect to
the observed spectral broadening. The numerical model was also used to
assess the dominant contribution among the various mechanisms within the
context of XPM-WC, and to investigate the potential of multicasting by XPM
in the nanowire.
© 2010 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