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 IPand amplifier section current IAare depicted. For relative small IA, the period doubling evolution to chaos is presented with the increase of IP. For the relative large IA, a high-frequency mode-beating (M-B) pulsation can be observed under suitable value of IP. 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.
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Yu et al. (2014) studied this question.
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