Abstract
The polarization-insensitive data transfer of 10-Gb/s return-to-zero ON-OFF
keying (RZ-OOK) to RZ-binary phase-shift keying (RZ-BPSK) has been successfully carried
out for the first time, in a passive birefringent nonlinear Al0.18
Ga0.82As waveguide, utilizing polarization-insensitive
cross-phase-modulation (PI-XPM). A 10-9 bit-error-rate (BER) pre-amplified receiver
sensitivity penalty of ≈2.2 dB relative to baseline RZ-BPSK was measured for
PI-XPM, when the RZ-OOK pump was polarization-scrambled and the RZ-probe was launched at
40°. The probe's optimal launch angle for PI-XPM was significantly influenced
by the anisotropy of the Al0.18
Ga0.82As waveguide.
© 2013 IEEE
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