Abstract
Compact transmitter and receiver optical sub-assemblies (TOSA and
ROSA) are fabricated in our laboratory and have an aggregated capacity of
100 Gb/s. Specially, directly modulated laser (DML) drivers with two
layers of electrical circuit boards are designed to inject RF signals and
bias currents separately. For all the lanes, the 3 dB bandwidth of the
cascade of the TOSA and ROSA exceeds 9 GHz, which allows the 12.5 Gb/s
operation. With the 12.5 Gb/s × 8-lane operation, clear eye diagrams for
back-to-back and 30-km amplified transmission with a dispersion
compensation fiber are achieved. Low cost and simple processing technology
make it possible to realize commercial production.
© 2016 Chinese Laser Press
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