| Download | - View final version: Performance of quantum-dash mode-locked lasers (QD-MLLDs) for high-capacity coherent optical communications (PDF, 5.6 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1364/OE.509643 |
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| Author | Search for: Khalil, MostafaORCID identifier: https://orcid.org/0000-0003-4578-8535; Search for: Xie, YuxuanORCID identifier: https://orcid.org/0000-0002-9110-9874; Search for: Berikaa, EssamORCID identifier: https://orcid.org/0000-0002-2782-2341; Search for: Liu, Jiaren1; Search for: Lu, Zhenguo1; Search for: Poole, Philip J.1ORCID identifier: https://orcid.org/0000-0001-5163-7640; Search for: Liu, Guocheng1; Search for: Weber, John1; Search for: Plant, David V.; Search for: Chen, Lawrence R.ORCID identifier: https://orcid.org/0000-0002-3760-4719 |
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| Affiliation | - National Research Council of Canada. Advanced Electronics and Photonics
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| Funder | Search for: National Research Council Canada; Search for: Natural Sciences and Engineering Research Council of Canada; Search for: Fonds de recherche du Québec – Nature et technologies |
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| Format | Text, Article |
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| Subject | optical communication; phase noise; quadrature amplitude modulation; silicon compounds; silicon photonics; semiconductor laser; quantum dot |
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| Abstract | We investigate the capabilities and limitations of quantum-dash mode-locked lasers (QD-MLLDs) as optical frequency comb sources in coherent optical communication systems. We demonstrate that QD-MLLDs are on par with conventional single-wavelength narrow linewidth laser sources and can support high symbol rates and modulation formats. We manage to transmit 64 quadrature amplitude modulation (QAM) signals up to 80 GBd over 80 km of standard single-mode fiber (SSMF), which highlights the distinctive phase noise performance of the QD-MLLD. Using a 38.5 GHz (6 dB bandwidth) silicon photonic (SiP) modulator, we achieve a maximum symbol rate of 104 GBd with 16QAM signaling and a maximum net rate of 416 Gb/s per carrier in a single polarization setup and after 80 km-SSMF transmission. We also compare QD-MLLD performance with commercial narrow-linewidth integrable tunable laser assemblies (ITLAs) and explore their potential for use as local oscillators (LOs) and signal carriers. The QD-MLLD has 45 comb lines usable for transmission at a frequency spacing of 25 GHz, and an RF linewidth of 35 kHz. |
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| Publication date | 2024 |
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| Publisher | Optica Publishing Group |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d595f18d-2df6-4582-a189-386aec789d53 |
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| Record created | 2024-07-15 |
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| Record modified | 2024-07-15 |
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