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- W3203942435 abstract "Summary form only given. We numerically model the Lang-Kobayashi equation (1980) for a semiconductor laser with a short external cavity, with 200ps roundtrip time. We identify those laser operating conditions and feedback parameters yielding the desired emission. Even in presence of laser noise, we find that there is an extended parameter space suitable to obtain such behavior. For a specific selection of a parameter set, the first harmonic is obtained at 4.4248GHz, along with higher harmonics at multiples of this frequency, leading to periodic patterns with a period of 226ps. The power spectral density of the higher harmonics is decaying with frequency, resulting in a periodic temporal signal. By attenuating the low-order harmonics and amplifying the high-order ones in the microwave domain, we are able to tune their relative power and generate periodic patterns with various intra-pattern structures. To evaluate their diversity, we employ a permutation entropy metric that relates the large variations of neighboring samples of the pattern with high metric values. Finally, by sampling the physically generated repetitive patterns, we can obtain sequences of values that are repetitive, but with an increased diversity." @default.
- W3203942435 created "2021-10-11" @default.
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- W3203942435 date "2021-06-21" @default.
- W3203942435 modified "2023-10-14" @default.
- W3203942435 title "Generation of fast physical periodic patterns with high intra-pattern diversity using semiconductor lasers with optical feedback" @default.
- W3203942435 cites W2066545822 @default.
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- W3203942435 doi "https://doi.org/10.1109/cleo/europe-eqec52157.2021.9541805" @default.
- W3203942435 hasPublicationYear "2021" @default.
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