Abstract
We demonstrate a novel method of wavelength conversion in a periodically
poled lithium niobate (PPLN) waveguide using polarization modulation and amplitude
modulation of its pump. Polarization-insensitive, all-optical, intensity-to-polarization
conversion in a semiconductor optical amplifier (SOA) is used to reduce the
waveguide's polarization sensitivity from $>$30 dB to $<$1
dB. We demonstrate BER measurements of the converted signal at 2.5 Gb/s. We
also demonstrate polarization modulation of the PPLN waveguide pump using
cross-polarization modulation in highly nonlinear fiber (HNLF) at 10 Gb/s.
© 2008 IEEE
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