140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity

Estaran, Jose; Mardoyan, H.; Jorge, F.; Ozoliņš, Oskars; Udaļcovs, Aleksejs; Konczykowska, A.; Riet, M.; Duval, B.; Nodjiadjim, Virginie; Dupuy, Jean-Yves; Pang, Xiaodan; Westergren, Urban; Chen, Jiajia; Popov, Sergei; Bigo, S.

doi:10.1109/jlt.2018.2876732

Cited by 59 publications

(35 citation statements)

References 36 publications

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“…The EML has a 3 dB bandwidth beyond 100 GHz with less than 2 dB ripple in the passband, which indicates high phase linearity [39]. These figures of merits make this EML considered an excellent candidate for four optical lanes-based 800 GbE solution [19,20,36]. We use a current of 120 mA for the DFB and a voltage of −1.85 V for the TWEAM, resulting in around a 5 dB extinction ratio.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

“…Eight optical lanes-based 400 GbE solutions are already being deployed [8,9]. Solutions based on eight optical lanes [10][11][12][13][14][15], or even four optical lanes [16][17][18][19][20][21][22][23][24][25][26][27], for 800 GbE are more appealing thanks to the use of using high bandwidth components. This allows reducing of costs, power consumption, and complexity of parallelism.…”

Section: Introductionmentioning

confidence: 99%

“…The current industrial solution for 400 GbE is based on four-level pulse amplitude modulation (PAM4) [8,9] instead of on-off keying (OOK) [19,28]. PAM4 reduces bandwidth requirements without excessive costs for sensitivity, digital signal processing (DSP), and transceiver complexity [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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100 Gbaud On–Off Keying/Pulse Amplitude Modulation Links in C-Band for Short-Reach Optical Interconnects

et al. 2021

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We experimentally evaluate the high-speed on–off keying (OOK) and four-level pulse amplitude modulation (PAM4) transmitter’s performance in C-band for short-reach optical interconnects. We demonstrate up to 100 Gbaud OOK and PAM4 transmission over a 400 m standard single-mode fiber with a monolithically integrated externally modulated laser (EML) having 100 GHz 3 dB bandwidth with 2 dB ripple. We evaluate its capabilities to enable 800 GbE client-side links based on eight, and even four, optical lanes for optical interconnect applications. We study the equalizer’s complexity when increasing the baud rate of PAM4 signals. Furthermore, we extend our work with numerical simulations showing the required received optical power (ROP) for a certain bit error rate (BER) for the different combinations of the effective number of bits (ENOB) and extinction ratio (ER) at the transmitter. We also show a possibility to achieve around 1 km dispersion uncompensated transmission with a simple decision feedback equalizer (DFE) for a 100 Gbaud OOK, PAM4, and eight-level PAM (PAM8) link having the received power penalty of around 1 dB.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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100 Gbaud On–Off Keying/Pulse Amplitude Modulation Links in C-Band for Short-Reach Optical Interconnects

et al. 2021

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“…Despite the challenges, an increase of the symbol rate would be a favored solution for DCI and has been subject of much recent research. A 204 Gb/s On-Off keying (OOK) transmitter has been demonstrated using InP platforms for both the optics and electronics in combination with offline DSP [5,6]. Similarly, an EAM integrated with a DFB laser (EADFB) was used to demonstrate 214 Gb/s PAM-4 transmission [7].…”

Section: :1 Silicon Photonic Serializer For Data Centermentioning

confidence: 99%

4:1 Silicon Photonic Serializer for Data Center Interconnects Demonstrating 104 Gbaud OOK and PAM4 Transmission

Verbist

Vanhoecke

Lillieholm

et al. 2019

J. Lightwave Technol.

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“…Two transmission experiments were realised with SEL generating electrical signals driving electro‐optical modulators. In [8], the 204‐Gbaud OOK (204 Gbit/s) intensity modulation direct detection (IM‐DD) transmission for data‐centre communication was demonstrated over 20 km distance. In [9], 180‐GBaud (720 Gbit/s) all‐ETDM single‐carrier polarisation multiplexed QPSK with the coherent receiver was investigated.…”

Section: Applicationsmentioning

confidence: 99%

212‐Gbit/s 2:1 multiplexing selector realised in InP DHBT

et al. 2019

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In this Letter, the authors report on the design, optimisation and electrical measurements of a new fully integrated multiplexing selector fabricated in 0.7-µm indium phosphide (InP) double-heterojunction bipolar transistor technology. All parts of the circuit were optimised to obtain 200-Gbit/s class of operation. They present electrical performances at 140 and to a record speed of 212 Gbit/s, highlighting their respective measurement challenges. The power consumption of the circuit is 0.5 and 0.8 W for a differential output amplitude of 240 and 730 mV, respectively. This selector has been successfully used as modulator driver in optical transmission experiments up to 204 Gbit/s.

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140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity

Cited by 59 publications

References 36 publications

100 Gbaud On–Off Keying/Pulse Amplitude Modulation Links in C-Band for Short-Reach Optical Interconnects

100 Gbaud On–Off Keying/Pulse Amplitude Modulation Links in C-Band for Short-Reach Optical Interconnects

4:1 Silicon Photonic Serializer for Data Center Interconnects Demonstrating 104 Gbaud OOK and PAM4 Transmission

212‐Gbit/s 2:1 multiplexing selector realised in InP DHBT

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