https://scholars.lib.ntu.edu.tw/handle/123456789/606957
標題: | Effect of Chirped Dispersion and Modal Partition Noise on Multimode VCSEL Encoded with NRZ-OOK and PAM-4 Formats | 作者: | Lo W.-C Wu W.-L Cheng C.-H Wang H.-Y Tsai C.-T Wu C.-H CHAO-HSIN WU GONG-RU LIN |
關鍵字: | Mode-partition-noise;Multimode fiber (OM5-MMF);Multimode vertical cavity surface emitting laser (MM-VCSEL);Relative intensity noise;Amplitude shift keying;Data streams;Dispersions;Pulse amplitude modulation;Transmissions;Differential resistances;Modal dispersion;Mode partition noise;Optimized operations;Phase variation;Root Mean Square;Spectral line width;Surface emitting lasers | 公開日期: | 2022 | 卷: | 28 | 期: | 1 | 來源出版物: | IEEE Journal of Selected Topics in Quantum Electronics | 摘要: | Chirp-dispersion and data transmission analyses of the multimode vertical-cavity surface-emitting laser (MM-VCSEL) with a 7.5-μm oxide-confined aperture and a root-mean-square spectral linewidth of 1 nm is performed for intra-data-center application. For directly modulating the non-return-to-zero on-off keying (NRZ-OOK) and the 4-level pulse amplitude modulation (PAM-4) data streams, an optimized bias current of 17 mA and a data amplitude of 800 mV are selected to provide the MM-VCSEL with an output optical power of 6.1 mW and a transverse mode number of 17. Such an optimized operation enables the MM-VCSEL with a differential resistance of 45.3 Ω to approach the impedance matching by driving the circuit such that the -3-dB bandwidth can be achieved to 23.8 GHz. The relative intensity noise and mode-partition-noise of the MM-VCSEL are analyzed to perform the optimized NRZ-OOK/PAM4 data encoding. By utilizing the pre-emphasis technique to compensate for the intensity and phase variation, the encoded NRZ-OOK and PAM-4 can be respectively promoted to 61 Gbit/s and 96 Gbit/s in the back-to-back (BtB) case. After passing through the 100-m OM5 multi-mode-fiber (MMF) link to suffer the severe modal dispersion, the data rate would respectively degrade to 45 Gbit/s (or 4.5 Gbit·km/s) and 70 Gbit/s (or 7 Gbit·km/s) for OOK and PAM-4 transmission. ? 1995-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107338360&doi=10.1109%2fJSTQE.2021.3086056&partnerID=40&md5=dc663aacbb2f86fda8c7272b14b545ce https://scholars.lib.ntu.edu.tw/handle/123456789/606957 |
ISSN: | 1077260X | DOI: | 10.1109/JSTQE.2021.3086056 |
顯示於: | 電機工程學系 |
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