Abstract
We demonstrate an all-optical retime, reshape, reamplify (3R) burst-mode receiver (BMR) operating error-free
with a 40-Gb/s variable-length asynchronous optical data packets that exhibit up to 9-dB packet-to-packet power
variation. The circuit is completely based upon hybrid integrated Mach–Zehnder interferometric (MZI) switches
as it employs four cascaded MZIs, each one performing a different functionality. The 3R burst-mode reception is
achieved with the combination of two discrete all-optical subsystems. A reshape, reamplify BMR employing a single
MZI is used first to perform power equalization of the incoming bursts and provide error-free data reception. This
novel approach is experimentally demonstrated to operate error-free, even for a 9-dB dynamic range of power
variation between bursty data packets and for a wide range of average input power. The obtained power-equalized data
packets are then fed into a 3R regenerator to improve the signal quality by reducing the phase and amplitude jitter
of the incoming data. This packet-mode 3R regenerator employs three MZIs that perform wavelength conversion, clock
extraction, and data regeneration for every packet separately and operates at 40 Gb/s, exhibiting rms timing jitter
reduction from 4 ps at the input to 1 ps at the output and a power penalty improvement of 2.5 dB.
© 2007 IEEE
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