Abstract
The dynamics of monolithically integrated amplified feedback lasers (AFL) is investigated through numerical simulation and experimental verification. The period-doubling route to chaos and high-frequency microwave generation are demonstrated through simulation. Then, we design and fabricate monolithically integrated AFLs. Mappings of dynamic states and oscillation frequency in the parameter space of phase section current
$I_{\rm P}$
and amplifier section current
$I_{\rm A}$
are depicted. For relative small
$I_{\rm A}$
, the period doubling evolution to chaos is presented with the increase of
$I_{\rm P}$
. For the relative large
$I_{\rm A}$
, a high-frequency mode-beating (M-B) pulsation can be observed under suitable value of
$I_{\rm P}$
. The oscillation frequency of period-one is about 10 GHz and the frequency of M-B pulsation is over 40 GHz for the device with a total length of 780 μm.
© 2014 IEEE
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