56 Gb/s PAM-4 Directly Modulated Laser for 200G/400G Data-Center Optical Links

Baveja, Prashant P.; Li, Mingshan; Wang, Ding; Hsieh, Chiuhui; Zhang, Huanlin; Ma, Ning; Wang, Yi; Lii, Justin L.; Liang, Yongxuan; Wang, Chong; Ho, I Lung; Zheng, Jun

doi:10.1364/ofc.2017.th4g.6

Cited by 9 publications

(4 citation statements)

References 2 publications

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“…It is anticipated that 400GbE will be rapidly adopted over the next few years [3]. Recently, 400GbE pluggable optics is under development to satisfy the demand on bandwidth-consuming applications, including data-center-based cloud services [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of 400 Gb/s Data Center Interconnect Using Unamplified High-Baud-Rate and High-Order QAM Single-Carrier Signal

2019

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In this article, we review the latest progress on data center interconnect (DCI). We then discuss different perspectives on the 400G pluggable module, including form factor, architecture, digital signal processing (DSP), and module power consumption, following 400G pluggable optics in DCI applications. Next, we experimentally investigate the capacity-reach matrix for high-baud-rate and high-order quadrature amplitude modulation (QAM) single-carrier signals in the unamplified single-mode optical fiber (SMF) link. We show that the 64 GBd 16-QAM, and 64-QAM signals can potentially enable 400 Gb/s and 600 Gb/s DCI application for 40 km and beyond of unamplified fiber link.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of 400 Gb/s Data Center Interconnect Using Unamplified High-Baud-Rate and High-Order QAM Single-Carrier Signal

2019

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“…Whilst coherent optical transmission offers undeniable benefits in terms of receiver sensitivity, enabling longer reaches and higher spectral efficiencies than its direct-detection counterpart, the latter has so far retained favour in many settings owing to its simplicity and affordability. Direct-detection formats in general benefit from reduced hardware requirements compared to coherent formats -modulation can be performed with simple Mach-Zehnder modulators (MZMs) [2], electro-absorption modulators [3,4] or even directly modulated lasers [5], whilst detection can be performed with single photodetectors, requiring no local optical oscillators and in many cases, relatively simple digital signal processing (DSP) requirements. PAM4 is just such a format and is notable for its particularly simple implementation and low DSP requirements leading to low power consumption relative to other direct-detection formats, such as carrier amplitude and phase modulation (CAP) and discrete multi-tone (DMT) [6,7].…”

Section: Introductionmentioning

confidence: 99%

PAM4 transmission over 360 km of fibre using optical phase conjugation

et al. 2019

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“…For 400 GbE over a signal mode fibre (SMF), four-level pulse amplitude modulation (PAM-4) has been started to standardise as the modulation format. In 1300 nm transmission window, 8 × 50 Gb/s (25 Gbaud/s) PAM-4 WDM transmissions over 2 km (400GBASE-FR8) and 10 km (400GBASE-LR8) have been defined [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The 25 Gb/s non-return-to-zero (NRZ) DFB LD TOSA using TO-CAN package [9] and the 50 Gb/s PAM-4 directly modulated DFB LD [7] were presented, but the whole analysis and design of DFB TOSA including PCB were still insufficient. Therefore, in this study, the coaxial DFB LD TOSA module including PCB will be simulated, analysed, and verified to be suitable in high-speed transmission applications through the HFSS and ADS software.…”

Section: Introductionmentioning

confidence: 99%