Abstract
Generating radio-frequency signals over the entire spectrum, from 1
to 100 GHz, typically requires the use of multiple oscillators designed
only for specific narrow bands of operation within that spectrum. An optoelectronic
system based on modulation side-band-injection-locked lasers is capable of
generating RF frequencies tunable over a span of more than seven octaves
with low phase noise .
We present the results of our efforts to develop a heterogeneously integrated
version of this system based on a silicon-photonic integrated circuit coupled
to III–V semiconductor gain chips. Towards that end, we have successfully
demonstrated an integrated laser module and achieved tunable RF generation
with a
$\sim$
1 Hz
linewidth.
© 2014 IEEE
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