A 70 Gbps NRZ optical link based on 850 nm band-limited VCSEL for data-center intra-connects

Zhongwei Tan; Chuanchuan Yang; Yixiao Zhu; Zhaopeng Xu; Kaiheng Zou; Fan Zhang; Ziyu Wang

doi:10.1007/s11432-017-9276-y

A 70 Gbps NRZ optical link based on 850 nm band-limited VCSEL for data-center intra-connects

Zhongwei Tan, Chuanchuan Yang^*, Yixiao Zhu, Zhaopeng Xu, Kaiheng Zou, Fan Zhang, Ziyu Wang

^*Corresponding author for this work

Peking University

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

14 Citations (Scopus)

Abstract

Short-reach optical interconnects among servers in data centers have attracted extensive studies recently. High capacity and low cost are two key problems for optical link. In this paper, we demonstrate a band-limited 850 nm vertical cavity surface emitting laser (VCSEL) based optical transmission system. The optical link realizes 70 Gb/s (65 Gb/s net rate) non-return-to-zero (NRZ) signal transmission over 11 m and 20 m OM4 multimode fiber (MMF), with the help of equalization for time domain interference elimination. The utilized VCSEL has a bandwidth of only 18 GHz, meeting the principle of low cost. The data baud rate in this paper reaches the highest value for an 18-GHz-class 850 nm VCSEL based optical link, to our best knowledge.

Original language	English
Article number	080406
Journal	Science China Information Sciences
Volume	61
Issue number	8
DOIs	https://doi.org/10.1007/s11432-017-9276-y
Publication status	Published - 1 Aug 2018
Externally published	Yes

Keywords

70 Gb/s NRZ
850 nm VCSEL
OM4 MMF
band-limited
equalization

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10.1007/s11432-017-9276-y

Cite this

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title = "A 70 Gbps NRZ optical link based on 850 nm band-limited VCSEL for data-center intra-connects",

abstract = "Short-reach optical interconnects among servers in data centers have attracted extensive studies recently. High capacity and low cost are two key problems for optical link. In this paper, we demonstrate a band-limited 850 nm vertical cavity surface emitting laser (VCSEL) based optical transmission system. The optical link realizes 70 Gb/s (65 Gb/s net rate) non-return-to-zero (NRZ) signal transmission over 11 m and 20 m OM4 multimode fiber (MMF), with the help of equalization for time domain interference elimination. The utilized VCSEL has a bandwidth of only 18 GHz, meeting the principle of low cost. The data baud rate in this paper reaches the highest value for an 18-GHz-class 850 nm VCSEL based optical link, to our best knowledge.",

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note = "Publisher Copyright: {\textcopyright} 2018, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.",

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AU - Tan, Zhongwei

AU - Yang, Chuanchuan

AU - Zhu, Yixiao

AU - Xu, Zhaopeng

AU - Zou, Kaiheng

AU - Zhang, Fan

AU - Wang, Ziyu

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Short-reach optical interconnects among servers in data centers have attracted extensive studies recently. High capacity and low cost are two key problems for optical link. In this paper, we demonstrate a band-limited 850 nm vertical cavity surface emitting laser (VCSEL) based optical transmission system. The optical link realizes 70 Gb/s (65 Gb/s net rate) non-return-to-zero (NRZ) signal transmission over 11 m and 20 m OM4 multimode fiber (MMF), with the help of equalization for time domain interference elimination. The utilized VCSEL has a bandwidth of only 18 GHz, meeting the principle of low cost. The data baud rate in this paper reaches the highest value for an 18-GHz-class 850 nm VCSEL based optical link, to our best knowledge.

AB - Short-reach optical interconnects among servers in data centers have attracted extensive studies recently. High capacity and low cost are two key problems for optical link. In this paper, we demonstrate a band-limited 850 nm vertical cavity surface emitting laser (VCSEL) based optical transmission system. The optical link realizes 70 Gb/s (65 Gb/s net rate) non-return-to-zero (NRZ) signal transmission over 11 m and 20 m OM4 multimode fiber (MMF), with the help of equalization for time domain interference elimination. The utilized VCSEL has a bandwidth of only 18 GHz, meeting the principle of low cost. The data baud rate in this paper reaches the highest value for an 18-GHz-class 850 nm VCSEL based optical link, to our best knowledge.

KW - 70 Gb/s NRZ

KW - 850 nm VCSEL

KW - OM4 MMF

KW - band-limited

KW - equalization

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A 70 Gbps NRZ optical link based on 850 nm band-limited VCSEL for data-center intra-connects

Abstract

Keywords

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