Coexistence of 5G With the Incumbents in the 28 and 70 GHz Bands

  • Bechta K.
  • Dietrich C.
  • Ghosh A.
  • Kim S.
  • Moorut P.
  • Visotsky E.

A promising way of realizing the fifth generation (5G) wireless systems is to operate 5G deployments at higher frequency bands, specifically in the millimeter-wave (mmW) spectrum (30â?"300 GHz). Access to such spectrum bands will enable future 5G wireless systems to meet the 5G requirements of peak rate greater than 10 ...

Efficient Fast-Convolution-Based Waveform Processing for 5G Physical Layer

  • Levanen T.
  • Pajukoski K.
  • Pirskanen J.
  • Renfors M.
  • Valkama M.
  • Valkonen S.
  • Yli-Kaakinen J.

This paper investigates the application of fast-convolution (FC) filtering schemes for flexible and effective waveform generation and processing in the fifth generation (5G) systems. FC-based filtering is presented as a generic multimode waveform processing engine while, following the progress of 5G new radio standardization in the Third-Generation Partnership Project, the ...

Transmit Filter Optimization for Improved Performance of Time-Frequency Packing System

  • Aref V.
  • Buchali F.
  • Buelow H.
  • Dischler R.
  • Hu Q.
  • Idler W.
  • Schmalen L.

The performance of time-frequency packing system is improved with an optimization of transmit filter. 0.2 dB gain in OSNR penalty and 4.5% increase in reach is experimentally demonstrated at spectral efficiency of 6.98 bits/s/Hz at the same system complexity.

Demonstration of a SDN-based Spectrum Monitoring of Elastic Optical Networks

  • Bigo S.
  • Boitier F.
  • Castoldi P.
  • Dallaglio M.
  • Delezoide C.
  • Dupas A.
  • Layec P.
  • Pham Van Q.
  • Sambo N.
  • Verchere D.
  • Zeghlache D.

This demo shows applications of SDN extensions for spectrum monitoring. To ensure a required quality of transmission, diagnostic is performed by dynamically setting monitor and adjusting their polling rate to manage optical frequency shift.

Flexible Optical Transmission close to the Shannon Limit by Probabilistically Shaped QAM

  • Buchali F.
  • Hu Q.
  • Idler W.
  • Schmalen L.

We are reviewing the application of probabilistic shaping in long haul optical transmission system and investigate the linear, nonlinear and implementation limits for this format in comparison to pragmatic QAM formats.

Extreme speed Power-DAC: leveraging InP DHBT for ultimate capacity single-carrier optical transmissions

  • Dupuy J.
  • Jorge F.
  • Konczykowska A.
  • Nodjiadjim V.
  • Riet M.

With 100-Gbaud operation and 4-Vpp swing, InP DHBT Power-DAC enabled experiments with different types E/O modulators. Highest single-carrier transmission capacities were shown like 1.08 Tb/s transmitter with single modulator using 90GBd PDM-64QAM format.

Real-Time Burst-Mode Operation of an Integrated SOA-PIN/TIA Receiver for 25 Gbit/s/lambda and Beyond TWDM-PON

  • Achouche M.
  • Angelini P.
  • Blache F.
  • Bonk R.
  • Borkowski R.
  • Brenot R.
  • Caillaud C.
  • Dupuy J.
  • Duval B.
  • Goix M.
  • Mekhazni K.
  • Paret J.
  • Pfeiffer T.
  • Poehlmann W.

First real-time 25 Gbit/s burst-mode operation of an integrated SOA-PIN/TIA receiver for future generation T(W)DM-PON is presented. The device has a 2.7-dB better sensitivity than APD photoreceiver and 13-dB better than PIN photoreceiver at this bitrate.

Digital Subcarrier Multiplexing in Optically Routed Networks

  • Dar R.
  • Winzer P.

We examine the benefit of digital subcarrier multiplexing in optically routed networks. We show that optimizing the number of subcarriers not only improves system tolerance to nonlinearities, but also induces smaller performance variations in network scenarios.

How learning processes allows reducing uncertainties on network parameters and design margins

  • Delezoide C.
  • Pesic J.
  • Pointurier Y.
  • Seve E.

We show that, using a set of monitored physical parameters (received SNR, powers), the network planning tool can learn to reduce the uncertainties on system margins thanks to a more accurate estimation of the input parameters used in the Quality of Transmission (QoT) predictor tool.

Electronically Subcarrier Multiplexed PM-32QAM with Optimized FEC Overhead

  • Buchali F.
  • Eriksson T.
  • Idler W.
  • Schmalen L.

Variable-rate coding is essential for electronic subcarrier multiplexed systems. We study PM-32QAM with up to 16 subcarriers per wavelength and demonstrate that at a net bitrate of 350 Gbit/s, the distance can be increased by 300 km in WDM transmission.

Nonlinear Equalizer for 112-Gb/s SSB-PAM4 in 80-km Dispersion Uncompensated Link

  • Chen Y.
  • Kaneda N.
  • Lee S.

We present a blindly adaptive nonlinear channel equalizer that effectively compensates nonlinearity in SSB-PAM4 transceiver components. The proposed scheme is demonstrated over 56GBaud PAM4 modulation over 80km of dispersion uncompensated fibers with BER near 1E-4.

Discrete Cosine Transform based Pilot-Aided Phase Noise Estimation for High-Order QAM Coherent Optical Systems

  • Kaneda N.
  • Zhu C.

We present a low-complexity, feed-forward pilot-aided phase noise estimation based on discrete cosine transform low pass filter model for high-order QAM signals. The proposed scheme is experimentally demonstrated in 11-Gbaud dual-polarization 128/256 QAM systems.

Tapless Locking of Silicon Ring Modulators for WDM Applications

  • Chen Y.
  • Dong P.
  • Kim K.
  • Melikyan A.

Novel technique for tapless locking of multiple silicon ring modulators for WDM applications is discussed. Wavelength locking of the dual channel WDM 20 Gbit/s transmitter with an athermal operation over temperature variations of +-10C is demonstrated.

Do elastic transponders with granularity finer than 50 Gb/s make gradual fit of modulation to ageing more profitable?

  • Bigo S.
  • Pesic J.
  • Rossi N.
  • Zami T.

We evaluate the potential benefits of relatively fine granular rate adaptive transponders to better progressively fit the ageing of the margin in WDM networks over a decade. The underlying technology and cost savings are presented for two network core topologies.

On Performance and Complexity of OSD for Short Error Correcting Codes in 5G-NR

  • Alloum A.
  • Boutros J.
  • Moeneclaey M.
  • Van Wonterghem J.

We compare the performance of a selection of short and very short length linear binary codes on the binary-input Gaussian channel. We use the probabilistic Ordered Statistics Decoder, that is universal to any code construction. As such we compare codes and not decoders. The word error rate versus the channel ...

Four-Core Coupled-Core Optical Amplifier

  • Amezcua-Correa R.
  • Burrows E.
  • Chen H.
  • Essiambre R.
  • Eznaveh Z.
  • Fontaine N.
  • Hasegawa T.
  • Hayashi T.
  • Lopez J.
  • Ryf R.
  • Schulzgen A.
  • Tamura Y.
  • Taru T.
  • Zaharias J.

We demonstrate a fiber amplifier that has strongly coupled cores at both the pump and signal wavelengths. Strong mode-coupling minimizes the mode dependent loss and simplifies pump distribution.

Integrated ultra-wide band wavelength-tunable hybrid external cavity silicon-based laser

  • Brenot R.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Verdier A.

We demonstrate a novel hybrid III-V/Si laser, which includes a broadband RSOA and an silicon-based photonic integrated circuit. The device shows high output power (up to +15 dBm) and wide tuning range (> 95nm) covering the C and L band with side mode suppression ratio greater than 35 dB.

218-Gb/s Single-Wavelength, Single-Polarization, Single-Photodiode Transmission Over 125-km of Standard Singlemode Fiber Using Kramers-Kronig Detection

  • Antonio Mecozzi
  • Chen X.
  • Cristian Antonelli
  • Mark Shtaif
  • Raybon G.
  • Sethumadhavan C.
  • Sinsky J.
  • Winzer P.

We demonstrate a 218-Gb/s direct detection receiver using Kramers-Kronig optical phase reconstruction and chromatic dispersion compensation based on a single photodiode and achieve single-span transmission over 125 km of standard singlemode fiber at 1550 nm.

Fast DAC Solutions for Future High Symbol Rate Systems

  • Chen X.
  • Pupalaikis P.
  • Sethumadhavan C.
  • Winzer P.

We review electronic digital-to-analog converter (DAC) technologies with sampling rates beyond 200 GSa/s and analog electrical bandwidths of 100 GHz using digital bandwidth interleaving. These allow the all-electronic generation of up to 195-GBaud electrical and 180-Gbaud optical modulation formats.

Hybrid III-V/Silicon Integration: Enabling the Next Generation of Advanced Photonic Transmitters

  • Brenot R.
  • Chang C.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Kim K.
  • Lee S.
  • Maho A.
  • Melikyan A.
  • Sethumadhavan C.
  • Simsarian J.
  • Sinsky J.
  • Zhu C.

We review recent advances in hybrid integration of III-V and Silicon devices using edge coupling. Advanced design of external silicon cavity allows the realization of a broad range of on-chip functionalities. Finally, advanced hybrid transmitters and their applications for the next generation of datacenter, access, metropolitan and long haul optical ...