Abstract
We propose in this paper a self-referenced method based on asynchronous sampling to monitor the waveform of periodic and quasi-periodic signals, with a low number of samples, typically 214 or lower. It provides a high-resolution representation of the signal under test, representative of the analog intensity signal under test. Additionally, the proposed approach is robust to the timing jitter of the signal, as experimentally demonstrated. Such features enable the accurate display of periodic and quasi-periodic signals. The method is applied to the characterization of laser dynamics, such as time series and phase portrait of periodic nonlinear regimes in optically injected lasers.
Highlights
In the field of optics and optical communications, hybrid optical-electrical asynchronous sampling technique is a powerful tool for the monitoring of periodic and digital data stream even at very high symbol rates [1,2,3,4]
In the domain of semiconductor devices, nonlinear dynamical scenario occurring in a laser diode operating with or without external control has been the field of extensive theoretical studies over the last twenty years, leading to the
In this paper we propose a temporal real-time asynchronous sampling scheme associated with proper digital signal processing for a detailed characterization of a dynamical system, such as a laser diode operating under optical injection
Summary
In the field of optics and optical communications, hybrid optical-electrical asynchronous sampling technique is a powerful tool for the monitoring of periodic and digital data stream even at very high symbol rates [1,2,3,4]. In this paper we propose a temporal real-time asynchronous sampling scheme associated with proper digital signal processing for a detailed characterization of a dynamical system, such as a laser diode operating under optical injection. It concatenates a lot of advantages such as a no time reference, real-time acquisition, no interpolation operation, and high robustness against the timing jitter. The proposed technique, which relies on a digital signal processing of an asynchronous sampled signal without any interpolation operation gives clear evidence of typical nonlinear dynamical features, which can be exploited for optical telecommunications networks
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