| Download | - View final version: InAs/InP quantum dash semiconductor coherent comb lasers and their applications in optical networks (PDF, 4.7 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1109/JLT.2020.3043284 |
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| Author | Search for: Lu, Zhenguo1ORCID identifier: https://orcid.org/0000-0002-2162-7502; Search for: Liu, Jiaren1; Search for: Poole, Philip J.1ORCID identifier: https://orcid.org/0000-0001-5163-7640; Search for: Mao, Youxin1ORCID identifier: https://orcid.org/0000-0002-5086-2296; Search for: Weber, John1; Search for: Liu, Guocheng1ORCID identifier: https://orcid.org/0000-0002-7643-3852; Search for: Barrios, Pedro1 |
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| Affiliation | - National Research Council of Canada. Advanced Electronics and Photonics
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| Funder | Search for: National Research Council of Canada; Search for: Secure Networks |
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| Format | Text, Article |
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| Subject | coherent comb lasers; coherent terabit/s networking systems; data center networks; integrated optics devices; optical communications; phase noise; quantum dash; quantum dot semiconductor mode-locked lasers; relative intensity noises; timing jitter; laser noise; waveguide lasers; optical device fabrication; high-speed optical techniques; laser mode locking; optical fibers; optical noise |
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| Abstract | We report on the design, growth, and fabrication of InAs/InP quantum dash (QD) gain materials and their use in lasers for optical network applications. A noise performance comparison between QD and quantum well (QW) Fabry–Perot (F-P) lasers has been made. By using the QD gain material we have successfully developed and assembled C-band coherent comb laser (CCL) modules with an electrical fast feedback loop control system to ensure a targeted mode frequency spacing. The frequency spacing was maintained within ±100 ppm and the operation wavelengths locked on the desired ITU grid within 0.01 nm over a period of several months. We also investigated a 25-GHz C-band QD CCL with an external cavity self-injection feedback locking (SIFL) system to reduce the optical linewidth of each individual channel to below 200 kHz in the wavelength range from 1537.55 nm to 1545.14 nm. The RF mode beating signal 3-dB bandwidth was also reduced from 9 kHz to approximately 500 Hz with this SIFL system. These QD CCLs with ultra-low relative intensity noise (RIN), ultra-narrow optical linewidth, and ultra-low timing jitter are excellent laser sources for multi-terabit optical networks. Using a 34.2 GHz QD CCL we demonstrate 10.8 Tbit/s (16QAM 48 × 28 GBaud PDM) coherent data transmission over 100 km of standard single mode fiber (SSMF) and 5.4 Tbit/s (PAM-4 48 × 28 GBaud PDM) aggregate data transmission capacity over 25 km of SSMF with error-free operation. |
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| Publication date | 2020-12-08 |
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| Publisher | IEEE |
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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 | 6a4a8b24-9e38-4d66-8bf6-3b74cc8ed02b |
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| Record created | 2022-10-17 |
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| Record modified | 2023-03-16 |
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