Silica Microsphere WGMR-Based Kerr-OFC Light Source and Its Application for High-Speed IM/DD Short-Reach Optical Interconnects
Source abstract
Abstract
Kerr optical frequency combs (OFCs) based on silica microsphere whispering gallery mode resonator (WGMR) have various applications where they are used as a light source. For telecommunication purposes, WGMR-based Kerr-OFC comb generators can be physically realized using silica microsphere resonators and can be used to replace multiple laser arrays. In such a realization, these novel light sources have the potential to demonstrate an attractive solution for intra-datacenter interconnects (DCI). In this paper, we show an experimental demonstration of a silica microsphere WGMR-based Kerr OFC light source where newly generated 400 GHz spaced carriers together with powerful linear equalization techniques, such as a linear symbol-spaced adaptive decision-feedback equalizer (DFE) with feed-forward (FF) and feedback (FB) taps, provide an alternative to individual lasers ensuring low-cost and low-complexity IM/DD scheme for the transmission of NRZ-OOK modulated signals at data rates up to 50 Gbps/λ over 2 km SMF link. Finally, we demonstrate a record 50 Gbps per λ transmission of NRZ-OOK modulated signals with a novel silica microsphere WGMR-based Kerr-OFC as a light source operating in the optical C-band, surpassing the previously demonstrated data rate record by five times.
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Research context
OpenAlex topics: Advanced Fiber Laser Technologies · Photonic and Optical Devices · Optical Network Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Telecommunications, Riga Technical University, 12 Azenes Street, 1048 Riga, Latvia
AFFOC Solutions Ltd., 17 Andrejostas Street, 1045 Riga, Latvia
Institute of Atomic Physics and Spectroscopy, University of Latvia, 3 Jelgavas Street, 1004 Riga, Latvia
Networks Unit, RISE Research Institutes of Sweden, Kista, 164 40 Stockholm, Sweden
Applied Physics Department, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden
Institute of Applied Physics, Russian Academy of Sciences, 46 Ul’yanov Street, 603950 Nizhny Novgorod, Russia
Institute for Experimental Physics, University of Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
Communication Technologies Research Center, Riga Technical University, 12 Azenes Street, 1048 Riga, Latvia
Funding
European Regional Development Fund · Ministry of Science and Higher Education of the Russian Federation · Russian Science Foundation
References (35)
Show source-provided references
1. Optical frequency comb technology for ultra-broadband radio-frequency photonics10.1002/lpor.201300126 ↗
2. Optical atomic clocks10.1103/RevModPhys.87.637 ↗
3. Generation of multiple ultrastable optical frequency combs from an all-fiber photonic platform10.1126/sciadv.aax4457 ↗
4. A 920-km optical fiber link for frequency metrology at the 19th decimal place10.1126/science.1218442 ↗
5. Cavity-enhanced direct frequency comb spectroscopy: Technology and applications. Annu10.1146/annurev-anchem-060908-155248 ↗
6. Guay, P., Hébert, N.B., Michaud-Belleau, V., Lancaster, D.G., and Genest, J. (2019). Free-running optical frequency combs for remote sensing. Optical Sensors and Sensing Congress (ES, FTS, HISE, Sensors), OSA Technical Digest, Optica Publishing Group.10.1364/ES.2019.ETu3A.6 ↗
7. Quantum Information Processing with Frequency-Comb Qudits10.1109/LPT.2019.2942136 ↗
8. Coherent terabit communications with microresonator Kerr frequency combs10.1038/nphoton.2014.57 ↗
9. Demonstration of a fiber optical communication system employing a silica microsphere-based OFC source10.1364/OE.419546 ↗
10. Intra-Datacenter Interconnects With a Serialized Silicon Optical Frequency Comb Modulator10.1109/JLT.2020.2996410 ↗
11. Short Reach Communication Technologies for Client-Side Optics Beyond 400 Gbps10.1109/LPT.2021.3078255 ↗
12. IM/DD WDM-PON Communication System Based on Optical Frequency Comb Generated in Silica Whispering Gallery Mode Resonator10.1109/ACCESS.2021.3076411 ↗
13. Chip-based optical frequency combs for high-capacity optical communications10.1515/nanoph-2020-0561 ↗
14. Generation of very flat optical frequency combs from continuous-wave lasers using cascaded intensity and phase modulators driven by tailored radio frequency waveforms10.1364/OL.35.003234 ↗
15. Kerr optical frequency combs: Theory, applications and perspective10.1515/nanoph-2016-0013 ↗
16. Dissipative Kerr solitons in optical microresonators10.1126/science.aan8083 ↗
17. Towards visible soliton microcomb generation10.1038/s41467-017-01473-9 ↗
18. Anashkina, E.A., Marisova, M.P., Salgals, T., Alnis, J., Lyashuk, I., Leuchs, G., Spolitis, S., Bobrovs, V., and Andrianov, A.V. (2021). Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands. Photonics, 8.10.3390/photonics8090345 ↗
19. Salgals, T., Ostrovskis, A., Ipatovs, A., Bobrovs, V., and Spolitis, S. (2019, January 17–20). Hybrid ARoF-WDM PON Infrastructure for 5G Millimeter-wave Interface and Broadband Internet Service. Proceedings of the Photonics & Electromagnetics Research Symposium-Fall (PIERS-Fall), Xiamen, China.10.1109/PIERS-Fall48861.2019.9021479 ↗
20. Anashkina, E.A., Marisova, M.P., Andrianov, A.V., Akhmedzhanov, R.A., Murnieks, R., Tokman, M.D., Skladova, L., Oladyshkin, I.V., Salgals, T., and Lyashuk, I. (2020). Microsphere-Based Optical Frequency Comb Generator for 200 GHz Spaced WDM Data Transmission System. Photonics, 7.10.3390/photonics7030072 ↗
21. Kerr Optical Frequency Combs With Multi-FSR Mode Spacing in Silica Microspheres10.1109/LPT.2021.3068373 ↗
22. Udalcovs, A., Salgals, T., Zhang, L., Pang, X., Djupsjöbacka, A., Spolitis, S., Bobrovs, V., Popov, S., and Ozolins, O. (2020). Optical Power Budget of 25+ Gbps IM/DD PON with Digital Signal Post-Equalization. Appl. Sci., 10.10.3390/app10176106 ↗
23. Single-mode silica microsphere Raman laser tunable in the U-band and beyond10.1016/j.rinp.2020.103084 ↗
24. Ultimate Q of optical microsphere resonators10.1364/OL.21.000453 ↗
25. Emerging material systems for integrated optical Kerr frequency combs10.1364/AOP.376924 ↗
26. Optical frequency comb generation from a monolithic microresonator10.1038/nature06401 ↗
27. Ideality in a Fiber-Taper-Coupled Microresonator System for Application to Cavity Quantum Electrodynamics10.1103/PhysRevLett.91.043902 ↗
28. Packaged, high-Q, microsphere-resonator-based add–drop filter10.1364/OL.39.005208 ↗
29. Directly pumped 10 GHz microcomb modules from low-power diode lasers10.1364/OL.44.001841 ↗
30. Yu, J., Lewis, E., Farrell, G., and Wang, P. (2018). Compound Glass Microsphere Resonator Devices. Micromachines, 9.10.20944/preprints201806.0241.v1 ↗
31. Coherent suppression of backscattering in optical microresonators10.1038/s41377-020-00440-2 ↗
32. Transmittance and near-field characterization of sub-wavelength tapered optical fibers10.1364/OE.15.013624 ↗
33. Ultra-low-loss tapered optical fibers with minimal lengths10.1364/OE.22.028427 ↗
34. Efficient fiber-optical interface for nanophotonic devices10.1364/OPTICA.2.000070 ↗
35. Jian, Y., Pfister, H.D., Narayanan, K.R., Raghu, R., and Mazahreh, R. (2013, January 9–13). In Iterative hard-decision decoding of braided BCH codes for high-speed optical communication. Proceedings of the 2013 IEEE Global Communications Conference (GLOBECOM), Atlanta, GA, USA.