Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF

Hsuan Yun Kao; Cheng Ting Tsai; Shan Fong Leong; Chun Yen Peng; Yu Chieh Chi; Huai Yung Wang; Hao-Chung Kuo; Chao Hsin Wu; Wood Hi Cheng; Gong Ru Lin

doi:10.1364/PRJ.6.000666

Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF

Hsuan Yun Kao, Cheng Ting Tsai, Shan Fong Leong, Chun Yen Peng, Yu Chieh Chi, Huai Yung Wang, Hao-Chung Kuo, Chao Hsin Wu, Wood Hi Cheng, Gong Ru Lin^*

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article

11 Scopus citations

Abstract

A 850 nm single-mode vertical cavity surface emitting laser (VCSEL)-based data transmission is demonstrated, enabling four-level pulse amplitude modulation (PAM-4) at 64 Gbit∕s over 100–300 m in an OM4 multi-mode fiber (MMF). By optimizing the bias of the single-mode VCSEL with a differential resistance of 159 Ω, the related electrical return loss of −5.7 dBis determined to provide an analog modulation bandwidth of 18.9 GHz. After pre-emphasizing the waveform of the PAM-4 format, the PAM-4 data stream can be successfully delivered by the single-mode VCSEL at 64 Gbit∕s under back-to-back and 100 m long OM4 MMF conditions. Lengthening the transmission distance worsens the signal-to-noise ratio (SNR) of PAM-4 data to the FEC criterion, as the waveform pre-emphasis of the PAM-4 data stream inevitably induces spectral power compensation from low to high frequencies. Therefore, increasing the OM4 MMF distance from 200 to 300 m significantly reduces the peak-to-peak amplitude of data to suppress the SNR and reduce the transmission capacity from 52 to 48 Gbit∕s.

Original language	English
Pages (from-to)	666-673
Number of pages	8
Journal	Photonics Research
Volume	6
Issue number	7
DOIs	https://doi.org/10.1364/PRJ.6.000666
State	Published - 1 Jul 2018

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Kao, H. Y., Tsai, C. T., Leong, S. F., Peng, C. Y., Chi, Y. C., Wang, H. Y., Kuo, H-C., Wu, C. H., Cheng, W. H., & Lin, G. R. (2018). Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF. Photonics Research, 6(7), 666-673. https://doi.org/10.1364/PRJ.6.000666

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title = "Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF",

abstract = "A 850 nm single-mode vertical cavity surface emitting laser (VCSEL)-based data transmission is demonstrated, enabling four-level pulse amplitude modulation (PAM-4) at 64 Gbit∕s over 100–300 m in an OM4 multi-mode fiber (MMF). By optimizing the bias of the single-mode VCSEL with a differential resistance of 159 Ω, the related electrical return loss of −5.7 dBis determined to provide an analog modulation bandwidth of 18.9 GHz. After pre-emphasizing the waveform of the PAM-4 format, the PAM-4 data stream can be successfully delivered by the single-mode VCSEL at 64 Gbit∕s under back-to-back and 100 m long OM4 MMF conditions. Lengthening the transmission distance worsens the signal-to-noise ratio (SNR) of PAM-4 data to the FEC criterion, as the waveform pre-emphasis of the PAM-4 data stream inevitably induces spectral power compensation from low to high frequencies. Therefore, increasing the OM4 MMF distance from 200 to 300 m significantly reduces the peak-to-peak amplitude of data to suppress the SNR and reduce the transmission capacity from 52 to 48 Gbit∕s.",

author = "Kao, {Hsuan Yun} and Tsai, {Cheng Ting} and Leong, {Shan Fong} and Peng, {Chun Yen} and Chi, {Yu Chieh} and Wang, {Huai Yung} and Hao-Chung Kuo and Wu, {Chao Hsin} and Cheng, {Wood Hi} and Lin, {Gong Ru}",

year = "2018",

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doi = "10.1364/PRJ.6.000666",

language = "English",

volume = "6",

pages = "666--673",

journal = "Photonics Research",

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Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF. / Kao, Hsuan Yun; Tsai, Cheng Ting; Leong, Shan Fong; Peng, Chun Yen; Chi, Yu Chieh; Wang, Huai Yung; Kuo, Hao-Chung; Wu, Chao Hsin; Cheng, Wood Hi; Lin, Gong Ru.

In: Photonics Research, Vol. 6, No. 7, 01.07.2018, p. 666-673.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Single-mode VCSEL for pre-emphasis PAM-4 transmission up to 64 Gbit/s over 100–300 m in OM4 MMF

AU - Kao, Hsuan Yun

AU - Tsai, Cheng Ting

AU - Leong, Shan Fong

AU - Peng, Chun Yen

AU - Chi, Yu Chieh

AU - Wang, Huai Yung

AU - Kuo, Hao-Chung

AU - Wu, Chao Hsin

AU - Cheng, Wood Hi

AU - Lin, Gong Ru

PY - 2018/7/1

Y1 - 2018/7/1

N2 - A 850 nm single-mode vertical cavity surface emitting laser (VCSEL)-based data transmission is demonstrated, enabling four-level pulse amplitude modulation (PAM-4) at 64 Gbit∕s over 100–300 m in an OM4 multi-mode fiber (MMF). By optimizing the bias of the single-mode VCSEL with a differential resistance of 159 Ω, the related electrical return loss of −5.7 dBis determined to provide an analog modulation bandwidth of 18.9 GHz. After pre-emphasizing the waveform of the PAM-4 format, the PAM-4 data stream can be successfully delivered by the single-mode VCSEL at 64 Gbit∕s under back-to-back and 100 m long OM4 MMF conditions. Lengthening the transmission distance worsens the signal-to-noise ratio (SNR) of PAM-4 data to the FEC criterion, as the waveform pre-emphasis of the PAM-4 data stream inevitably induces spectral power compensation from low to high frequencies. Therefore, increasing the OM4 MMF distance from 200 to 300 m significantly reduces the peak-to-peak amplitude of data to suppress the SNR and reduce the transmission capacity from 52 to 48 Gbit∕s.

AB - A 850 nm single-mode vertical cavity surface emitting laser (VCSEL)-based data transmission is demonstrated, enabling four-level pulse amplitude modulation (PAM-4) at 64 Gbit∕s over 100–300 m in an OM4 multi-mode fiber (MMF). By optimizing the bias of the single-mode VCSEL with a differential resistance of 159 Ω, the related electrical return loss of −5.7 dBis determined to provide an analog modulation bandwidth of 18.9 GHz. After pre-emphasizing the waveform of the PAM-4 format, the PAM-4 data stream can be successfully delivered by the single-mode VCSEL at 64 Gbit∕s under back-to-back and 100 m long OM4 MMF conditions. Lengthening the transmission distance worsens the signal-to-noise ratio (SNR) of PAM-4 data to the FEC criterion, as the waveform pre-emphasis of the PAM-4 data stream inevitably induces spectral power compensation from low to high frequencies. Therefore, increasing the OM4 MMF distance from 200 to 300 m significantly reduces the peak-to-peak amplitude of data to suppress the SNR and reduce the transmission capacity from 52 to 48 Gbit∕s.

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