Serial 100 Gb/s connectivity based on polymer photonics and InP-DHBT electronics

Katopodis, V.; Kouloumentas, Christos; Konczykowska, A.; Jorge, F.; Groumas, Panos; Zhang, Ziyang; Beretta, A.; Dede, Alberto; Dupuy, Jean-Yves; Nodjiadjim, Virginie; Cangini, G.; Buren, G. von; Miller, Eric; Dinu, Raluca; Choi, Jung Han; Pech, D.; Keil, Norbert; Bach, H.-G.; Grote, N.; Vannucci, A.; Avramopoulos, H.

doi:10.1364/oe.20.028538

Cited by 30 publications

(14 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It should be also noted that the total capacity of the transmitter is limited in this work by the performance of our lithium niobate IQMs. Given the high bandwidth of the SPDACs, the symbol rate can be extended to the 50 Gbaud regime, if high-speed modulators based on InP [30] or electro-optic polymers [31][32][33] are available, allowing for a corresponding capacity extension to 600 Gb/s. Given the set of operation cases in Table I, each corresponding FPGA design is associated with the generation of the proper number of binary sequences at the proper rate, and the activation of the proper number of FPGA transmitters in order to feed the SPDACs.…”

Section: Multi-flow Transmitter Programmabilitymentioning

confidence: 99%

Multiflow Transmitter With Full Format and Rate Flexibility for Next Generation Networks

Katopodis

Mardoyan

Tsokos

et al. 2018

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

Abstract-We extend our proof-of-concept demonstration of a novel multi-flow transmitter for next generation optical metro networks. The multi-flow concept is based on the combination of spectrum and polarization sliceability, and its implementation on the combination of a polymer photonic integration platform with high-speed IQ modulators. In this work, we replace the static scheme of our previous demonstration for the definition of the optical flows and the generation of the driving signals, and we unveil the true potential of the transmitter in terms of programmability and network flexibility. Using a software defined optics (SDO) platform for the configuration of the digital and optical parts of the transmitter, and the configuration of the optical switch inside the node, we demonstrate operation with flexible selection of the number and type of the optical flows, and flexible selection of the modulation format, symbol rate, emission wavelength and destination of each flow. We focus on 16 specific cases accommodating 1 or 2 optical flows with modulation format up to 64-quadrature amplitude modulation (64-QAM), and symbol rate up to 25 Gbaud. Through transmission experiments over 100 km of standard single-mode fiber, we validate the possibility of the transmitter to interchange its configuration within this range of operation cases with bit-error rate performance below the forward error correction limit. Future plans for transmitter miniaturization and extension of our SDO platform in order to interface with the software defined networking (SDN) hierarchy of true networks are also outlined.Index Terms -multi-format multi-rate multi-flow transmitters, elastic optical networks, polymers, photonic integration, software-defined optics, FPGA, InP-DHBT circuits.

show abstract

Section: Multi-flow Transmitter Programmabilitymentioning

confidence: 99%

Multiflow Transmitter With Full Format and Rate Flexibility for Next Generation Networks

Katopodis

Mardoyan

Tsokos

et al. 2018

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Scaling per-channel speed to 100 Gb/s is therefore deemed essential for the deployment of efficient 400 Gb/s systems 3 . The feasibility of serial 100 Gb/s connectivity using non-return-to-zero (NRZ) modulation has been demonstrated in 4 based on specialized stateof-the-art photonics and electronics technologies, but, in order to reach the cost and energy consumption targets for future systems, implementation with available CMOS nodes is an outright requirement. With CMOS speeds unable to keep pace with surging interconnect lane speeds, there is growing consensus among academia and industry towards migration to higher-order modulation (HOM) providing more bits-per-symbol 3,5 .…”

Section: Introductionmentioning

confidence: 99%

112 Gb/s sub-cycle 16-QAM Nyquist-SCM for intra-datacenter connectivity

Bakopoulos¹,

Dris²,

Argyris³

et al. 2016

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

Datacenter traffic is exploding. Ongoing advancements in network infrastructure that ride on Moore's law are unable to keep up, necessitating the introduction of multiplexing and advanced modulation formats for optical interconnects in order to overcome bandwidth limitations, and scale lane speeds with energy-and cost-efficiency to 100 Gb/s and beyond. While the jury is still out as to how this will be achieved, schemes relying on intensity modulation with direct detection (IM/DD) are regarded as particularly attractive, due to their inherent implementation simplicity. Moreover, the scaling-out of datacenters calls for longer transmission reach exceeding 300 m, requiring single-mode solutions. In this work we advocate using 16-QAM sub-cycle Nyquist-SCM as a simpler alternative to discrete multitone (DMT), but which is still more bandwidth-efficient than PAM-4. The proposed optical interconnect is demonstrated at 112 Gb/s, which, to the best of our knowledge, is the highest rate achieved in a single-polarization implementation of SCM. Off-theshelf components are used: A DFB laser, a 24.3 GHz electro-absorption modulator (EAM) and a limiting photoreceiver, combined with equalization through digital signal processing (DSP) at the receiver. The EAM is driven by a low-swing (<1 V) arbitrary waveform generator (AWG), which produces a 28 Gbaud 16-QAM electrical signal with carrier frequency at ~15 GHz. Tight spectral shaping is leveraged as a means of maintaining signal fidelity when using low-bandwidth electro-optic components; matched root-raised-cosine transmit and receive filters with 0.1 excess bandwidth are thus employed. Performance is assessed through transmission experiments over 1250 m and 2000 m of SMF.

show abstract

“…However, this approach doesn't meet the vision of reducing module size and power consumption [3]. On the other hand, scaling the bitrate of serial optical systems necessitates specialized state-of-the-art photonics and electronics technologies [4]; however, to reach the cost and energy consumption targets of future interconnect systems, it is necessary to rely on currently-available CMOS nodes. With the speeds of both CMOS electronics and commodity optics unable to keep pace with surging interconnect lane speeds, there is growing consensus among academia and industry towards migration to higher-order modulation providing more bits-per-symbol [5].…”

Section: Introductionmentioning

confidence: 99%

Optical PAM-4 generation through polarization multiplexing in single-polarization single-mode VCSELs

Iliadis

Kanakis

Argyris

et al. 2016

2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS)

Self Cite

View full text Add to dashboard Cite

PAM-4 modulation is considered a key enabler for scaling capacity in datacenter networks, due to its bandwidth efficiency and implementation simplicity. We propose a novel technique for optical generation of four-level signals by means of polarization multiplexing, leveraging the single-polarization operation of a double-mesa single-mode VCSEL with 20.5 GHz 3-dB bandwidth. The scheme obviates the need for linear electronic drivers and circumvents the requirement for driving the VCSEL in its linear regime. Experimental results verify the scheme, exhibiting BER within FEC standards at 28 Gb/s. Comparison with an electrical PAM-4 modulated VCSEL demonstrates superior performance of the proposed concept.

show abstract

Serial 100 Gb/s connectivity based on polymer photonics and InP-DHBT electronics

Cited by 30 publications

References 9 publications

Multiflow Transmitter With Full Format and Rate Flexibility for Next Generation Networks

Multiflow Transmitter With Full Format and Rate Flexibility for Next Generation Networks

112 Gb/s sub-cycle 16-QAM Nyquist-SCM for intra-datacenter connectivity

Optical PAM-4 generation through polarization multiplexing in single-polarization single-mode VCSELs

Contact Info

Product

Resources

About