Abstract
A self-started DFBLD-EAM pulsed carrier at 10 GHz is demonstrated to perform the
bi-directional down-stream RZ-BPSK and up-stream reused RZ-OOK transmissions at
10-Gbit/s. Such a pulsed RZ carrier source is delivered from the self-pulsating
DFBLD-EAM driven by using a fiber true-time-delay incorporated self-feedback
optoelectronic oscillator (OEO) in the central office. The pulsewidth and jitter of the
self-started RZ-BPSK carrier optimized with the true-time-delay incorporated OEO
feedback loop with lowest SSB phase noise are theoretically and experimentally
performed. Optimizing the delay SMF length provides the OEO triggered optical RZ-BPSK
carrier with the shortened pulsewidth, the reduced timing jitter, and the enhanced pulse
on/off extinction ratio of 20 ps, 650 fs, and 10.1 dB, respectively. The bi-directional
RZ-BPSK and RZ-OOK transmissions using original and reused RZ carrier require receiving
sensitivities of -20 and -17.5 dBm, respectively, to achieve a requested BER of
10-9. The power penalties after 25-km transmission are 0.5 dB for down-stream BPSK
and 2.5 dB for up-stream OOK with reused RZ carrier are observed. This study explores
the new application of an OEO self-pulsated DFBLD-EAM RZ carrier in the hybrid BPSK-OOK
transmission network and its reusing capability.
© 2012 IEEE
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