cpqd at optical communication ecosystem - last/next 10 years and r&d&i opportunities

Last/Next 10 years and R&D&I opportunitiesCPqD at Optical Communication Ecosystem

14/05/2016Juliano R. F. de Oliveira, Ph.D

Optical Communication Division Manager

AGENDA

• Motivation

• Optical communication history @ CPQD

• Last 10 years of optical communications R&D&I @ CPqD

• Last/Next 10 years technological standpoint

• Next 10 years of optical communications R&D&I @ CPqD Roadmap

• Optical Hardware, Algorithms, Networks and Emerging technologies;

• Remarks

MOTIVATION

• Today advanced communications demand

• Industries, business/banks, transportation, people and global knowledge;

• Fiber capacity crunch

• SSMF Tx/Rx of 100Tb/s hero experiments, (limit ~200Tb/s due nonlinear effects);

• CMOS ASICs limitations

• Processor frequency Moore law (i7 runs at 3.5GHz), CMOS process at 14nm (limit of 0.5nm gate size is coming);

• Tomorrow advanced communications demand

• Medical diagnosis and treatment, traffic safety and Internet of Things;

• New solutions have to meet not just capacity demand, but all economical perspective

• More capacity, reduced cost/bit, increased energy efficiency, smaller sizes;

• Emerging Technologies: Integrated electronics & photonics convergence;

MOTIVATION: TOMORROW DEMAND

M2M and IoT Smart

Cities Market

▪ Devices: +capacity, -cost/bit, +energy efficiency, -sizes;▪ Integrated electronics & photonics convergence;▪ Submarine, long-haul, metro and data center networks;

OPTICAL COMMUNICATION R&D&I HISTORY AT CPQD

• 1976 – CPqD Birth (Telebras national carrier action)

• 1976-1997 – R&D&I for import substitution

• Lasers, photodetectors, TIA, thin film devices, optical amplifiers, optical networks, etc;

• 1997-2001 – CPqD Privatization (inter. competitive integration)

• Creation of companies (optical communication: PADTEC);

• 2002-2005

• Optical communication technological transfer to PADTEC (2.5G transponders, static EDFAs and fixed WDM systems);

LAST 10 YEARS: OPTICAL COMMUNICATION R&D&I AT CPQD

2005-2010

• Optical transmission 10G, 40Gb/s (OOK), RS-FECs FPGA IPs;

• Optical amplifier (EDFA) for dynamic WDM networks (AGC) with transient suppression;

• Intelligent WDM System monitoring (IWDM);

• Eye diagram (BER) asynchronous estimation;


2005-2010

• WDM system optimization

• Manual system alingment;

• Dispersion management;

• Optimized fiber WDM net.;

• Optical cross-connect (OXC) sub-systems;

• Planar lightwave circuit (PLC) ROADMs (for ring topologies)


2010-2015

• Hybrid optical amplifiers

• EDFA + Dist. 1st orderRaman

• WSS ROADM sub-systems

• Linecards

• CDC add/drops

• Mesh networks architecture


2010-2015

• Tx/Rx Coherent DSP algorithms 100/200/400Gb/s (DP-QPSK, DP-16QAM, and400G DP-64QAM)

• Tx DSP: pulse shapping, econders, interpolators

• Rx DSP: Deskew, IQ imb., CD equalizer, time recovery, dynamicequalizer, phase andfrequency estimation

LAST 10 YEARS TECHNOLOGICAL STANDPOINT

• System and subsystem Research/Development/Innovation

• Optical design and optimization IP developed @ CPqD(applied research to innovation);

• Optics and electronics devices from international companies;

• Economical standpoint

• Very fragmented market (lots of device companies);

• No local manufacturers (taxes benefits available);

• Economic growth (local R&D big investment);

NEXT 10 YEARS TECHNOLOGICAL STANDPOINT

• System and subsystem Research/Development/Innovation

• Optical design and optimization must be continually improved @ CPqD (state-of-the-art knowledge to innovation);

• Optics and electronics must be co-designed @ CPqD and local/international partners (BrPhotonics emerges);

• Economical standpoint

• Verticalized market (improve aggregated value);

• Local manufacturers (taxes benefits available, more competitive);

• Low economic growth (foreign R&D investment);

NEXT 10 YEARS R&D&I CPQD ROADMAP

• Hardware – Fibers (systems)

• Multi-Core fiber (MCF)

• Inter core interference

• Few-mode fiber (FMF)

• Coupled core fiber (CCF);

• Hybrid between MCF & FMF;

• Photonic bandgap fiber (FBGF)

• 0.1% SSMF non-linearity, and ultimately low loss (<0.1dB/km) @ 2000nm λ;

doi:10.1088/2040-8978/18/6/063002

From: Roadmap of optical communications


• Hardware – Amplifiers

• EDFA (low cost, high energy efficiency, spectral limitation)

• Raman (high cost, low energy efficiency, no spectral limitation)

• Hybrid Amplifiers (Raman/EDFA)

• Efficient @ new modulation formats

• Dynamic operation (SDN)

• Faster controls (no power transients);

• Rare earth amplifier for FBGF


• Hardware – SDM

• Spatial division multiplexing is required to attend 40% traffic growth up to 2024 (1Pb/s);

• Arrayed integration

• Transponders, amplifiers, ROADMs, splices/connectors/ fibers;

• Initially amortize overhead cost and energy w/o sacrifice performance;

• Performance issues (induced xtalkin arrayed transceivers);

doi:10.1088/2040-8978/18/6/063002

From: Roadmap of optical communications

Integrated photonics arrayed transciever


• Hardware – Coherent transceivers• Optical modulator (LiNbO3, GaAs, InP,

or Si) non-linear effects understanding• Novel modulator design• Co-design modulator/DSP to maximize

performance

• Implementable non-linear compensation (power and area optimize);• Newer DSP or optimized ASIC IP• DBP, Volterra and evaluate NFT

• Integration DSP+FEC+non-linearcompensation (power optimized)

NEXT 10 YEARS R&D&I CPQD ROADMAP• Algorithms – Modulation formats

• Submarine and long-haul (coherent)• Performance (spectral efficiency X

distance product)

• Low implementation penalty

• Flexible transponders (rate adaptive codes/symbol/flow)

• Modulation format design (coded) aim NL mitigation;

• Inter/Intra data center (PM IM/DD)• Application dependent trade-off:

devices cost, power, simplified DSP (same access networks challenges)

56G PAM4

Submarine and long-haul with recirculation loop


• Algorithms – DSP• Bring actual systemic IPs to ASIC

(RTL and GDSII)• Power optimization to meet metro-

data center demands;• Maximum performance for

submarino/long-haul applications

• OTN and SD-FEC integratedtogether with DSP (poweroptimized)

• Co-design DSP + photonics (cost)• Best (sub) and non-ideal devices

(data-center);

• Intelligent/elastic DSP (dynamic)

DSPOTN


• Networks – long haul

• Optical automatized links (SDN like)

• Layer-0 optimization algorithms• Global WSS

equalization scheme

• Optical links auto-alignment strategies• OSNR, BER, NL

mitigation;Homemade Network

Elements

5 dB

WSS Global equalization

1

2

TOTAL

N

i

i TAA

][minTOTAL wAA TOTALw

Apply Γ

T ≤ allowed tilt?

EndYes

No

Given: N ≥ 2, W, A{1, …, N - 1} , T


• Silicon photonics

• Photonics IPs design & validation for basicbuilding blocks• Coherent receiver (3rd tapeout)

• Coherent transmitter (2nd tapeout)

• Unit cell optics (laser+tx+rx)

• Narrow LW Laser (InP + cavity design)

• Hybrid III/V-Si integration for tunnable lasers

• Hybrid Polymer (active)-Si (passive) integration for high speed + low loss + smallsize modulators

• Fabless model => great flexibility

Coherent Receiver

Coherent Transmitter

Narrow LW Laser


• Silicon photonics - Alingment• Edge coupling spot size

converter;• 1 dB tolerance misalignment

(+/- 2 um);• Wavelength independent;

• Butt coupling for hybrid III-V laser integration with passive Si photonics

• Fiber array v-groove strategies to minimize quantity of fiber alignment

2 3 4 5 6-2.5

-2

-1.5

-1

-0.5

0

X: 3.1

Y: -0.4007

Fiber MFD [m]

Tota

l eff

icie

ncy [

dB

]

TE

TM

high-efficiency edge couplers in 300-nm SOI

-4 -2 0 2 4-4

-2

0

2

4

-4 -2 0 2 4-4

-2

0

2

4

TE (log) TM (log)


• Silicon photonics - Packaging• Need to leverage what has

been done in electronics industry

• BGA + optical port can be a enabler• Size reduction (smaller io)• Higher integration• Uncooled/non-hermetic• Proximity optics/electronics

• Challenge: high temperature fiber attach (~270º)

+

REMARKS

• CPqD must be prepared for the verticalization era of opticalcommunications (partner technology support)

• R&D in optical system and sub-system optimization IP;

• SDN coherent transcievers, DSP/FEC evolution;

• Co-design integrated photonics & electronics;

• Optical system & sub-system design/optimization

• D&I regarding the basic devices are needed to this new era

• Integrated photonics modulator, receiver and laser devices;

• ASIC IPs for OTN, DSP, FEC and non-linear mitigation (poweroptimized);

TRANSFORMANDOEM REALIDADE

w w w . c p q d . c o m . b r

cpqd at optical communication ecosystem - last/next 10 years and r&d&i opportunities

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