Pan, S;
Zhang, H;
Liu, Z;
Liao, M;
Tang, M;
Wu, D;
Hu, X;
... Chen, S; + view all
(2022)
Multi-wavelength 128 Gbit s^{−1} λ^{−1} PAM4 optical transmission enabled by a 100 GHz quantum dot mode-locked optical frequency comb.
Journal of Physics D: Applied Physics
, 55
(14)
, Article 144001. 10.1088/1361-6463/ac4365.
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Abstract
Semiconductor mode-locked lasers (MLLs) with extremely high repetition rates are promising optical frequency comb (OFC) sources for their usage as compact, high-efficiency, and low-cost light sources in high-speed dense wavelength-division multiplexing transmissions. The fully exploited conventional C- and L- bands require the research on O-band to fulfil the transmission capacity of the current photonic networks. In this work, we present a passive two-section InAs/InGaAs quantum-dot (QD) MLL-based OFC with a fundamental repetition rate of ∼100 GHz operating at O-band wavelength range. The specially designed device favours the generation of nearly Fourier-transform-limited pulses in the entire test range by only pumping the gain section while with the absorber unbiased. The typical integrated relative intensity noise of the whole spectrum and a single tone are −152 and −137 dB Hz^{−1} in the range of 100 MHz–10 GHz, respectively. Back-to-back data transmissions for seven selected tones have been realised by employing a 64 Gbaud four-level pulse amplitude modulation format. The demonstrated performance shows the feasibility of the InAs QD MLLs as a simple structure, easy operation, and low power consumption OFC sources for high-speed fibre-optic communications.
| Type: | Article |
|---|---|
| Title: | Multi-wavelength 128 Gbit s^{−1} λ^{−1} PAM4 optical transmission enabled by a 100 GHz quantum dot mode-locked optical frequency comb |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6463/ac4365 |
| Publisher version: | https://doi.org/10.1088/1361-6463%2Fac4365 |
| Language: | English |
| Additional information: | © 2022 IOP Publishing. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10141268 |
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