>100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems

Nikolaos Panteleimon Diamantopoulos; Hiroshi Yamazaki; Suguru Yamaoka; Munehiko Nagatani; Hidetaka Nishi; Hiromasa Tanobe; Ryo Nakao; Takuro Fujii; Koji Takeda; Takaaki Kakitsuka; Hitoshi Wakita; Minoru Ida; Hideyuki Nosaka; Fumio Koyama; Yutaka Miyamoto; Shinji Matsuo

doi:10.1109/JLT.2020.3021727

>100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems

Nikolaos Panteleimon Diamantopoulos^*, Hiroshi Yamazaki, Suguru Yamaoka, Munehiko Nagatani, Hidetaka Nishi, Hiromasa Tanobe, Ryo Nakao, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Hitoshi Wakita, Minoru Ida, Hideyuki Nosaka, Fumio Koyama, Yutaka Miyamoto, Shinji Matsuo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We demonstrate DML-based net 325-Gb/s at back-to-back and 321.24-Gb/s after 2-km standard single-mode fiber transmissions for >300-Gbps/λ short-reach optical interconnects. Our net rate performance denotes an increase of ∼34% compared to our previous works, while the pre-FEC rates are >400 Gbps. The DML transmitter is based on a PPR-enhanced, >100-GHz-bandwidth DML, fabricated by our novel membrane-III-V-on-SiC technology. Also wide-band, entropy-loaded DMT modulation is utilized based on a novel adaptive algorithm and via a digitally-preprocessed analog multiplexer. These results pave the way towards low-cost and energy-efficient Terabit Ethernet and a significant step towards achieving DML-based 400-Gbps/λ IM/DD systems in the future.

Original language	English
Article number	9186796
Pages (from-to)	771-778
Number of pages	8
Journal	Journal of Lightwave Technology
Volume	39
Issue number	3
DOIs	https://doi.org/10.1109/JLT.2020.3021727
Publication status	Published - 2021 Feb 1
Externally published	Yes

Keywords

Adaptive entropy loading
direct-detection
directly-modulated laser

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1109/JLT.2020.3021727

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Diamantopoulos, N. P., Yamazaki, H., Yamaoka, S., Nagatani, M., Nishi, H., Tanobe, H., Nakao, R., Fujii, T., Takeda, K., Kakitsuka, T., Wakita, H., Ida, M., Nosaka, H., Koyama, F., Miyamoto, Y., & Matsuo, S. (2021). >100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems. Journal of Lightwave Technology, 39(3), 771-778. Article 9186796. https://doi.org/10.1109/JLT.2020.3021727

Diamantopoulos, NP, Yamazaki, H, Yamaoka, S, Nagatani, M, Nishi, H, Tanobe, H, Nakao, R, Fujii, T, Takeda, K, Kakitsuka, T, Wakita, H, Ida, M, Nosaka, H, Koyama, F, Miyamoto, Y & Matsuo, S 2021, '>100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems', Journal of Lightwave Technology, vol. 39, no. 3, 9186796, pp. 771-778. https://doi.org/10.1109/JLT.2020.3021727

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abstract = "We demonstrate DML-based net 325-Gb/s at back-to-back and 321.24-Gb/s after 2-km standard single-mode fiber transmissions for >300-Gbps/λ short-reach optical interconnects. Our net rate performance denotes an increase of ∼34% compared to our previous works, while the pre-FEC rates are >400 Gbps. The DML transmitter is based on a PPR-enhanced, >100-GHz-bandwidth DML, fabricated by our novel membrane-III-V-on-SiC technology. Also wide-band, entropy-loaded DMT modulation is utilized based on a novel adaptive algorithm and via a digitally-preprocessed analog multiplexer. These results pave the way towards low-cost and energy-efficient Terabit Ethernet and a significant step towards achieving DML-based 400-Gbps/λ IM/DD systems in the future.",

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AB - We demonstrate DML-based net 325-Gb/s at back-to-back and 321.24-Gb/s after 2-km standard single-mode fiber transmissions for >300-Gbps/λ short-reach optical interconnects. Our net rate performance denotes an increase of ∼34% compared to our previous works, while the pre-FEC rates are >400 Gbps. The DML transmitter is based on a PPR-enhanced, >100-GHz-bandwidth DML, fabricated by our novel membrane-III-V-on-SiC technology. Also wide-band, entropy-loaded DMT modulation is utilized based on a novel adaptive algorithm and via a digitally-preprocessed analog multiplexer. These results pave the way towards low-cost and energy-efficient Terabit Ethernet and a significant step towards achieving DML-based 400-Gbps/λ IM/DD systems in the future.

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>100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems

Abstract

Keywords

ASJC Scopus subject areas

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