A Computationally Efficient Integrated Coupled Opto-Electronic Oscillator Model
| Autor: | Lars Peter Nielsen, Martijn J. R. Heck |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry Bandwidth (signal processing) microwave oscillators Coupled opto-electronic oscillators Spectral efficiency semiconductor lasers Communications system Laser Topology Opto-electronic oscillator photonic integrated circuits Atomic and Molecular Physics and Optics law.invention Semiconductor law Phase noise timing jitter business Jitter |
| Zdroj: | Nielsen, L & Heck, M 2020, ' A Computationally Efficient Integrated Coupled Opto-Electronic Oscillator Model ', Journal of Lightwave Technology, vol. 38, no. 19, 9040598, pp. 5430-5439 . https://doi.org/10.1109/JLT.2020.2981768 |
| DOI: | 10.1109/JLT.2020.2981768 |
| Popis: | Coupled opto-electronic oscillators can generate microwave signals with very low phase noise. Several approaches for modelling these oscillators exist, but none of them include the fast carrier dynamics of the mode-locked laser, due to computational limitations. In this work, we present a new model, that is based on a computationally efficient model for semiconductor mode-locked lasers, which is capable of simulating both the fast laser dynamics and the long term phase stability. We use it to model the phase noise of a hybridly integrated coupled opto-electronic oscillator. The results show that a timing jitter of down to $\mathbf {\sim} \text{0.2}$ $\text{ps}$ in the integration range from $\text{10}$ $\text{kHz}$ to $\text{10}$ $\text{MHz}$ is achievable when using an integrated delay line of $\text{10.2}$ $\text{m}$ in the opto-electronic feedback path. It is also shown that by increasing both gain and bandwidth of the opto-electronic feedback link, the timing jitter is reduced. Together, these results present a path towards low phase noise performance of hybridly integrated coupled opto-electronic oscillators, and the model serves as a new design tool. Such oscillators might increase, for example, the spectral efficiency in future data communication systems and thus enable higher data rates. |
| Databáze: | OpenAIRE |
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