Energy efficiency measures for future core networks

  • Dong X.
  • El-Gorashi T.
  • Elmirghani J.
  • Hinton K.
  • Klein T.
  • Lawey A.
  • Musa M.
  • Nonde L.

We summarize the various techniques developed by the GreenTouch consortium over the past 5 years to minimize core network power consumption. Adopting GreenTouch techniques can potentially improve the energy efficiency by 316× in a 2020 reference network compared to the state of the art in 2010.

QoS-aware protection in flexgrid optical networks

  • Bigo S.
  • Bisson A
  • Dupas A.
  • Layec P

We propose a protection scenario for flexgrid networks whereby premium traffic survives cuts with just-enough bandwidth. We demonstrate a novel two-wavelength Baudrate-switchable optical transmitter reconfiguring in <2.8ms. We compute typical spectral usage boosted by 80%.

Quasi frequency drift suppression for burst mode operation in low-cost thermally-tuned TWDM-PON

  • Barbet S.
  • Bonk R.
  • Borkowski R.
  • Brenot R.
  • Debregeas H.
  • Pfeiffer T.
  • Poehlmann W.
  • Provost J.

To solve the problem of thermally-induced frequency drift in burst-mode transmitters for TWDM access networks, we propose a laser with reduced self-heating, and a simple counter-heating method that demonstrates clear improvement in burst-mode BER measurements.

5Tb/s transmission over 2.2 km of multimode OM2 fiber with direct detection thanks to wavelength and mode group multiplexing

  • Barre N.
  • Benyahya K.
  • Charlet G.
  • Ghazisaeidi A.
  • Jian P.
  • Labroille G.
  • Morizur J.
  • Renaudier J.
  • Sillard P.
  • Simonneau C.

We demonstrate 5Tb/s bidirectional transmission (2.5Tb/s in each direction) over 2.2km of OM2 fiber using selective excitation of 4 mode groups and WDM multiplexing with DMT modulation and direct detection.

Small form factor hybrid Ill-V/Si wavelength-tunable push-pull microring based transmitter

  • Brenot R.
  • Chang C.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Kim K.
  • Lee J.
  • Maho A.

We demonstrate a compact low-chirp and energy-efficient integrated hybrid Ill-V/Si transmitter based on a Vernier tunable laser that covers the entire C-band, and a low drive voltage push-pull ring modulator that provides large extension ratio and low chirp.

80Gb/s PDM-QPSK PIC-to-PIC transmission based on integrated hybrid silicon/III-V wavelength-tunable transmitter and monolithic silicon coherent receiver

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

We reported the first hybrid Ill-V/Si integrated QPSK wavelength-tunable transmitter based on high-speed ring modulators (BWâ?¼23GHz). 80 Gbit/s PDM-QPSK signal transmission over 100 km with said integrated hybrid transmitter as well as a fully packaged silicon-based coherent receiver is demonstrated.

Switching and multiplexing technologies for mode-division multiplexed networks

  • Ryf R.

¢ Mode-multiplexing over multimode fibers has the potential to scale WDM networks by a factor of 10 or more â?¢ Multimode components like wavelength selective switches and optical amplifiers can scale to large number of modes â?¢ Wavelength selective switches, which are the basic building block for WDM network can ...

A high loss budget 400-Gbps WDM-OFDM long-reach PON over 60 km transmission by 10G-class EAM and PIN without in-line or pre-amplifier

  • Chen J.
  • Chen Y.
  • Chuang C.
  • Liu J.
  • Lu S.
  • Nguyen H.
  • Wang C.
  • Wei C.
  • Wu H.

A 400-Gbps WDM-OFDM LR-PON over 60-km SMF is demonstrated with a 10G-class EAM and PIN. 25-dB loss budget is realized without in-line or pre-amplifier to economically support 128 ONUs with 3.1-Gbps/ONU capacity.

Single carrier 1.2 Tbit/s transmission over 300 km with PM-64 QAM at 100 GBaud

  • Altenhain L.
  • Buchali F.
  • Dumler U.
  • Engenhardt K.
  • Eriksson T.
  • Idler W.
  • Moller M.
  • Schmalen L.
  • Schmid R.
  • Schuh K.
  • Templ W

We experimentally demonstrate Dual Polarization 64 QAM at 100 GBaud performing below the 20% soft FEC threshold of 4×10â?'2 over 300 km of ultra large effective area fiber at a record line rate of 1.2-Tbit/s.

Integrated 5-channel WDM hybrid III-V/Si transmitter enabling 100Gb/s and beyond

  • Brenot R.
  • Chandrasekhar S.
  • Chang C.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Maho A.

We report the demonstration of an ultra-compact 5-channel hybrid integrated III-V/Si transmitter. We successfully achieved modulation up to 40 Gbit/s/channel providing a total aggregated capacity of 200 Gbit/s and transmission over 10 km at 21.4 Gbit/s/channel for 100Gbit/s.

Real-time demonstration of 28 Gbit/s electrical duobinary TDM-PON extension using remote nodes

  • Bauwelinck J.
  • Bonk R.
  • Borkowski R.
  • Chase C.
  • De Keulenaer T.
  • Houtsma V.
  • Lucas R.
  • Pfeiffer T.
  • Poehlmann W.
  • Van Kerrebrouck J.
  • Van Veen D.
  • Yin X.

An experimental real-time reach and split extension of a 28 Gbit/s electrical duobinary TDM-PON is demonstrated. 50 dB budget is achieved using either remote nodes based on SOA or based on a distributed OLT concept.

Safety of Information and Communication Technology Equipment Used in Smart Grid Applications

  • Gies D.

This paper explores the merger of power utility circuits with that of the information and communication technology (ICT) equipment under the smart grid and the safety implications that this poses, and determines what is the maximum voltage that ICT equipment, designed in accordance with IEC 62368-1 can directly access power-grid ...

An Empirical Outdoor-to-Indoor Path Loss Model From Below 6 GHz to cm-Wave Frequency Bands

  • Kovacs I.
  • Mogensen P.
  • Nguyen H.
  • Rodriguez I.
  • Tbsã¸Rensen

This letter presents an empirical multifrequency outdoor-to-indoor path loss model. The model is based on measurements performed on the exact same set of scenarios for different frequency bands ranging from traditional cellular allocations below 6 GHz (0.8, 2, 3.5, and 5.2 GHz), up to centimeter (cm)-wave frequencies (10, 18, and ...

Multidimensional Resource Allocation in NFV Cloud

  • Goldstein M.
  • Raz D.
  • Segall I.

Network Function Virtualization (NFV) is a new networking paradigm in which network functionality is implemented on top of virtual infrastructure deployed over COTS servers. One of the main motivations for the shift of telco operators into this paradigm is cost reduction, thus the efficient use of resources is an important ...

The Actual Cost of Software Switching for NFV Chaining

  • Caggiani Luizelli M.
  • Raz D.
  • Saar Y.
  • Yallouz J.

Network Function Virtualization (NFV) is a novel paradigm allowing flexible and scalable implementation of network services on cloud infrastructure. An important enabler for the NFV paradigm is software switching, which needs to satisfy rigid network requirements such as high throughput and low latency. Despite recent research activities in the field ...

Order-Optimal Rate of Caching and Coded Multicasting With Random Demands

  • Caire G.
  • Ji M.
  • Llorca J.
  • Tulino A.

We consider the canonical shared link caching network formed by a source node, hosting a library of $m$ information messages (files), connected via a noiseless multicast link to $n$ user nodes, each equipped with a cache of size $M$ files. Users request files independently at random according to an a-priori ...

5G Radio Access Protocols with Multi-User Detection for URLLC

  • Marco Centenaro
  • Saur S.

In this paper we present both collision-free and contention-based radio access protocols for sporadic small data packet transmissions in the uplink of 5G. We compare them by computer simulations with respect to throughput and a joint latency plus reliability metric. Based on that we analyze the tradeoff between number of ...

Power Fluctuations of Intermodal Four-Wave Mixing in Few-Mode Fibers

  • Esmaeelpour M.
  • Essiambre R.
  • Fontaine N.
  • Lingle R.
  • Ryf R.
  • Sun Y.
  • Toulouse J.

We demonstrate the full bandwidth measurement of the intermodal four-wave mixing efficiency for a 4.7-km three-spatial-mode few-mode fiber. Large fluctuations of intermodal four-wave mixing between the LP $_{01}$ and LP$_{11}$ modes are experimentally observed. These fluctuations exhibit a strong wavelength dependence that can be persistent in time. The fluctuations are ...

Large-Signal Modeling of Multi-finger InP DHBT Devices at Millimeter-Wave Frequencies

  • Dupuy J.
  • Johansen T.
  • Konczykowska A.
  • Midili V.
  • Nodjiadjim V.
  • Riet M.
  • Squartecchia M.
  • Zhurbenko V.

A large-signal modeling approach has been developed for multi-finger devices fabricated in an Indium Phosphide (InP) Double Heterojunction Bipolar Transistor (DHBT) process. The approach utilizes unit-finger device models embedded in a multi-port parasitic network. The unit-finger model is based on an improved UCSD HBT model formulation avoiding an erroneous RciCbci ...

Low Conversion Loss 94 GHz and 188 GHz Doublers in InP DHBT Technology

  • Dupuy J.
  • Johansen T.
  • Konczykowska A.
  • Midili V.
  • Nodjiadjim V.
  • Riet M.
  • Rybalko Oleksandr
  • Squartecchia M.
  • Zhurbenko V.

An Indium Phosphide (InP) Double Heterojunction Bipolar Transistor (DHBT) process has been utilized to design two doublers to cover the 94 GHz and 188 GHz bands. The 94 GHz doubler employs 4-finger DHBTs and provides conversion loss of 2 dB. A maximum output power of nearly 3 dBm is measured ...