Abstract
In this paper, we present a novel device which comprises a DFB laser
with electroabsorption modulators integrated on both sides. This integrated
chip provides two independently modulated optical outputs from a single laser
source and thus cuts the required number of chips for multilane applications
in half. Both outputs can be simultaneously operated with 56 Gb/s NRZ leading
to 112 Gb/s from a single chip. The performance of the chip is further tested
in an optical PAM4 generation experiment. The two NRZ modulated outputs are
combined with a polarization combiner to generate an optical PAM4 signal which
on the receiver side is measured with a polarization insensitive
photodetector.
© 2016 IEEE
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