Abstract
A 10-Gb/s optical transceiver using the Yuen 2000 (Y-00) encryption protocol was
developed. The key device in the transceiver, a 10-GS/s, 10-bit digital-to-analog converter
(DAC) LSI, was fabricated using 0.25-$\mu$m SiGe BiCMOS technology. Circuit techniques such as segmented architecture,
parasitic capacitance separation using the base-common transistor, and the usage of a common
mode logic (CML) driver were employed to minimize glitches. The Y-00 transceiver equipped with
the DAC LSI operated at 10 Gb/s. Moreover, a 300-km transmission experiment performed at a
data rate of 10 Gb/s proved that the developed transceiver can be used in a practical
application when forward error correction is applied.
© 2010 IEEE
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