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1.6-Tb/s 10-km Transmission in O-Band Using 400-Gb/s/Lane SDM Channels Enhanced by Trellis Path-Limitation MLSE
To economically manage the rapid traffic growth in data center networks, transmission technologies need to be studied for next-generation high-speed Ethernet, such as 1.6 TbE and beyond. This article describes a demonstration of 1.6 Tb/s (4 × 400-Gb/s/lane) O-band transmission over 10 km of installe...
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Published in: | Journal of lightwave technology 2024-06, Vol.42 (12), p.4338-4346 |
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creator | Taniguchi, Hiroki Nakamura, Masanori Hamaoka, Fukutaro Mori, Takayoshi Shibahara, Kohki Matsui, Takashi Yamada, Yusuke Jyo, Teruo Nagatani, Munehiko Mutoh, Miwa Shiratori, Yuta Wakita, Hitoshi Kobayashi, Takayuki Yamamoto, Shuto Takahashi, Hiroyuki Nakajima, Kazuhide Kisaka, Yoshiaki Miyamoto, Yutaka |
description | To economically manage the rapid traffic growth in data center networks, transmission technologies need to be studied for next-generation high-speed Ethernet, such as 1.6 TbE and beyond. This article describes a demonstration of 1.6 Tb/s (4 × 400-Gb/s/lane) O-band transmission over 10 km of installed four-core fiber. Since chromatic dispersion limits the transmission distance of the high-speed intensity-modulated direct detection (IM-DD) signals, a space division multiplexed technology using the 10-km four-core fiber is suitable to parallelly transmit 400-Gb/s/lane signals at near-zero dispersion wavelengths. A net-rate of 400 Gb/s/lane IM-DD signals with 155-GBd pulse amplitude modulation-8 (PAM-8) is generated by using an in-house broadband amplifier based on an InP double hetero-junction bipolar transistor (InP-DHBT). Our nonlinear maximum likelihood sequence estimation (NL-MLSE) enhances the performance of the 400-Gb/s/lane signals. We also introduce a technique called trellis path-limitation MLSE (TL-MLSE) for reducing computational complexity with temporarily decided results and a truncated trellis diagram. The trellis path-limitation MLSE with nonlinear calculation function (TL-NL-MLSE) achieves 1.6-Tb/s 10-km transmission in the O-band with the same performance as and lower computational complexity than the NL-MLSE. |
doi_str_mv | 10.1109/JLT.2024.3407973 |
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This article describes a demonstration of 1.6 Tb/s (4 × 400-Gb/s/lane) O-band transmission over 10 km of installed four-core fiber. Since chromatic dispersion limits the transmission distance of the high-speed intensity-modulated direct detection (IM-DD) signals, a space division multiplexed technology using the 10-km four-core fiber is suitable to parallelly transmit 400-Gb/s/lane signals at near-zero dispersion wavelengths. A net-rate of 400 Gb/s/lane IM-DD signals with 155-GBd pulse amplitude modulation-8 (PAM-8) is generated by using an in-house broadband amplifier based on an InP double hetero-junction bipolar transistor (InP-DHBT). Our nonlinear maximum likelihood sequence estimation (NL-MLSE) enhances the performance of the 400-Gb/s/lane signals. We also introduce a technique called trellis path-limitation MLSE (TL-MLSE) for reducing computational complexity with temporarily decided results and a truncated trellis diagram. The trellis path-limitation MLSE with nonlinear calculation function (TL-NL-MLSE) achieves 1.6-Tb/s 10-km transmission in the O-band with the same performance as and lower computational complexity than the NL-MLSE.</description><identifier>ISSN: 0733-8724</identifier><identifier>EISSN: 1558-2213</identifier><identifier>DOI: 10.1109/JLT.2024.3407973</identifier><identifier>CODEN: JLTEDG</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Broadband amplifiers ; Complexity ; Ethernet ; Heterojunction bipolar transistors ; High speed ; Intensity modulation ; maximum likelihood decoding ; Maximum likelihood estimation ; nonlinear filters ; Optical attenuators ; Optical fiber amplifiers ; optical fiber communication ; Optical fiber devices ; Optical fiber dispersion ; Optical fibers ; Optical receivers ; Optical transmitters ; Pulse amplitude modulation ; Semiconductor devices ; space division multiplexing</subject><ispartof>Journal of lightwave technology, 2024-06, Vol.42 (12), p.4338-4346</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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This article describes a demonstration of 1.6 Tb/s (4 × 400-Gb/s/lane) O-band transmission over 10 km of installed four-core fiber. Since chromatic dispersion limits the transmission distance of the high-speed intensity-modulated direct detection (IM-DD) signals, a space division multiplexed technology using the 10-km four-core fiber is suitable to parallelly transmit 400-Gb/s/lane signals at near-zero dispersion wavelengths. A net-rate of 400 Gb/s/lane IM-DD signals with 155-GBd pulse amplitude modulation-8 (PAM-8) is generated by using an in-house broadband amplifier based on an InP double hetero-junction bipolar transistor (InP-DHBT). Our nonlinear maximum likelihood sequence estimation (NL-MLSE) enhances the performance of the 400-Gb/s/lane signals. We also introduce a technique called trellis path-limitation MLSE (TL-MLSE) for reducing computational complexity with temporarily decided results and a truncated trellis diagram. The trellis path-limitation MLSE with nonlinear calculation function (TL-NL-MLSE) achieves 1.6-Tb/s 10-km transmission in the O-band with the same performance as and lower computational complexity than the NL-MLSE.</description><subject>Broadband amplifiers</subject><subject>Complexity</subject><subject>Ethernet</subject><subject>Heterojunction bipolar transistors</subject><subject>High speed</subject><subject>Intensity modulation</subject><subject>maximum likelihood decoding</subject><subject>Maximum likelihood estimation</subject><subject>nonlinear filters</subject><subject>Optical attenuators</subject><subject>Optical fiber amplifiers</subject><subject>optical fiber communication</subject><subject>Optical fiber devices</subject><subject>Optical fiber dispersion</subject><subject>Optical fibers</subject><subject>Optical receivers</subject><subject>Optical transmitters</subject><subject>Pulse amplitude modulation</subject><subject>Semiconductor devices</subject><subject>space division multiplexing</subject><issn>0733-8724</issn><issn>1558-2213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpNkD1PwzAURS0EEqWwMzBYYnb6_BU7I5RSQKmK1HSOnMShLqkDcTr035OqHZjeHc69TzoI3VOIKIVk8pFmEQMmIi5AJYpfoBGVUhPGKL9EI1CcE62YuEY3IWwBqBBajVBLo5hkxSRgCuR7h7PO-LBzIbjWY-fxkjwbX-F1cP4LCwAyH9hJarzFq5cFnm6M97YJeOaHVNoKF4dhwzaNC_jT9BuSup3rTX-cW6Sr2S26qk0T7N35jtH6dZZN30i6nL9Pn1JSUiV7IquiYlQlUsRQc2mNjiuIy1IZLSppikrTWLBCKmGBJraWSU3rItF1XDMtGeNj9Hja_ena370Nfb5t950fXuYclBRUikQOFJyosmtD6Gyd_3RuZ7pDTiE_as0HrflRa37WOlQeThVnrf2HS8GBxfwPNAJvzA</recordid><startdate>20240615</startdate><enddate>20240615</enddate><creator>Taniguchi, Hiroki</creator><creator>Nakamura, Masanori</creator><creator>Hamaoka, Fukutaro</creator><creator>Mori, Takayoshi</creator><creator>Shibahara, Kohki</creator><creator>Matsui, Takashi</creator><creator>Yamada, Yusuke</creator><creator>Jyo, Teruo</creator><creator>Nagatani, Munehiko</creator><creator>Mutoh, Miwa</creator><creator>Shiratori, Yuta</creator><creator>Wakita, Hitoshi</creator><creator>Kobayashi, Takayuki</creator><creator>Yamamoto, Shuto</creator><creator>Takahashi, Hiroyuki</creator><creator>Nakajima, Kazuhide</creator><creator>Kisaka, Yoshiaki</creator><creator>Miyamoto, Yutaka</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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This article describes a demonstration of 1.6 Tb/s (4 × 400-Gb/s/lane) O-band transmission over 10 km of installed four-core fiber. Since chromatic dispersion limits the transmission distance of the high-speed intensity-modulated direct detection (IM-DD) signals, a space division multiplexed technology using the 10-km four-core fiber is suitable to parallelly transmit 400-Gb/s/lane signals at near-zero dispersion wavelengths. A net-rate of 400 Gb/s/lane IM-DD signals with 155-GBd pulse amplitude modulation-8 (PAM-8) is generated by using an in-house broadband amplifier based on an InP double hetero-junction bipolar transistor (InP-DHBT). Our nonlinear maximum likelihood sequence estimation (NL-MLSE) enhances the performance of the 400-Gb/s/lane signals. We also introduce a technique called trellis path-limitation MLSE (TL-MLSE) for reducing computational complexity with temporarily decided results and a truncated trellis diagram. 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subjects | Broadband amplifiers Complexity Ethernet Heterojunction bipolar transistors High speed Intensity modulation maximum likelihood decoding Maximum likelihood estimation nonlinear filters Optical attenuators Optical fiber amplifiers optical fiber communication Optical fiber devices Optical fiber dispersion Optical fibers Optical receivers Optical transmitters Pulse amplitude modulation Semiconductor devices space division multiplexing |
title | 1.6-Tb/s 10-km Transmission in O-Band Using 400-Gb/s/Lane SDM Channels Enhanced by Trellis Path-Limitation MLSE |
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