kth cost 268,thessaloniki 2002 /a. karlsson cost 268 wavelength scale photonic components for...

KTH

COST 268,Thessaloniki 2002 /A. Karlsson

COST 268 COST 268 Wavelength Scale Photonic Wavelength Scale Photonic

Components for Components for TelecommunicationsTelecommunications

Final report presentationFinal report presentationAnders Karlsson, Chairman

Dep. Microelectronics & Kista Photonics Research Center Royal Institute of Technology-KTH,

Kista, Sweden

KTH


OutlineOutline• COST 268 scientific backgroundCOST 268 scientific background

• COST 268 accomplishmentsCOST 268 accomplishments

• COST 268 ”offsprings”COST 268 ”offsprings”- new COST proposals & FP6 EoI- new COST proposals & FP6 EoI

KTH


Photonics & market?Photonics & market?

http://www.lightreading.com/

Nasdaq

10 optical companies

IT backlash has hit photonics

But, only photonics can provide long term

infrastructurerecovery when?

Flexibleall-opticalnetwork

IT backlash has hit photonics

But, only photonics can provide long term

infrastructurerecovery when?

Flexibleall-opticalnetwork

KTH


COST 268 foresight…COST 268 foresight…

Wavelength Scale Photonics- Reduced power consumption

- Potentially low cost

- Increased device speed

- Higher level of integration

What is seen today:•VCSELs dominating for datacom(VCSEL= Vertical Cavity Surface Emitting Laser)

• LW VCSELs for access network

• High refractive index contrast & photonic crystals for integrated optics

• Novel gain materials for new wavelengths => new applications

Photonic R&D gives huge paybacks Swedish VINNOVA agency:

- IT, Telecom and biotech R&D =>10-30 time return over 5-10 years

Photonic R&D gives huge paybacks Swedish VINNOVA agency:

- IT, Telecom and biotech R&D =>10-30 time return over 5-10 years

KTH


COST 268 in briefCOST 268 in brief

Our aim: “to investigate and promote the use of (optical)

wavelength scale photonics in telecommunications”

•Our work:- work on joint technical topics, discussed in WG sessions - sponsor “short term missions”- arrange or co-assist with workshops - assist with coordination and dissemination of research

KTH


COST 268 COST 268 OrganisationOrganisation

WG3Novel gain materialsChair:Alfred Forchel,

Univ. Wurtzburg,

Andrea Fiore, Roma& EPFLEli Kapon,

EPFL, Switzerland

WG2Photonic CrystalsChairs:Richard M De La RueGlasgow Univ.,Rene DeRiddersTwenteGeorge Kiriakidis,

FORTH, Greece

WG1 Vertical cavitiesChair:Jan Danckaert, VuBRoel Baets, Peter Bienstmann,

Univ. Gent

Karl-Heinz Gulden

CSEM, Zurich,

ManagementCommittee

COST TCT& TC secretariat

Chair, vice-chair

+administration

KTH


Participation in COST Participation in COST 268268

Large community

-19 member countries

- 3 associated members

- more than 40 groups

- Universities and industries

KTH


COST 268 sample COST 268 sample resultsresults

Modulation properties of RED 670 nm

VCSELs for plastic optical fiber (POF)

- 3-dB bandwidth = 4.5GHz

- 1 Gbit/s “error-free” transmission through 50m GI-POF KTH&Zarlink (MITEL) invited paper Photonics West 2000

KTH


VCSEL modeling I...VCSEL modeling I...

Resonance wavelength (d=8 um)

978,5

979,0

979,5

980,0

980,5

981,0

981,5

2 3 4 5position

GentChalmersAir ForceCSEMPlanarTorinoTorino LPBerlinIllinois

Investigate position dependent effectof thin oxide window

nm

25 period DBR

30 period DBR

5 nm QW

Oxide

• 9 group did modeling comparisons• 7 groups compared oxidation rate from joint wafers

KTH


VCSEL modeling II...VCSEL modeling II...

10-5

0,0001

0,001

0,01

0,1

1

0 0,5 1 1,5 2 2,5 3 3,5 4

Turn-on 1-3 Ith

Pow

er (

mW

)

Time (ns)

Politecnico di Torino

KTH, Stockholm

Santander

Total

Side mode

Develop & compare in-depth models for VCSEL design and for e.g. transmission modelling

5 lab-comparison

Develop & compare in-depth models for VCSEL design and for e.g. transmission modelling

5 lab-comparison

KTH


WG 2 Modeling ExerciseWG 2 Modeling Exercise

26 28 30 32 34 36 38

1

1.5

2

2.5

3

3.5

4

4.5

5

x [m ]

y [

m]

t= 200 fs

d

ng

ns

na

x

y

dg

Goal: understand role of lossesin deeply etched gratings

Importance: compact integrated opticsfor DWDM

COST 268:Comparative modeling byPrague, Hagen, Twente, Gent, and Glasgow

KTH


STMs an important STMs an important vehiclevehicle“High speed properties of tunnel-junction VCSELs”

“Photonic Crystal cavities”“Agreement between numerical modelling and experimental results on

the coupling constants in multicore Photonic crystal fibers”"Ultrafast carrier dynamics in 1.3 m quantum dot amplifiers »

“Optical pumping experiments on VCSEL cavities with GIRO gratings”

“Modeling of multimode behavior of VCSELs.”

"Modelling of vertical cavity resonances in photonic crystal films"

"Recent insights in the polarisation behaviour of VCSELs: experiments and theory",

“Analog distortion measurements of VCSELs”

"High Speed Modulation Characteristics of 1.55 µm InP-based VCSELs with buried tunnel junction"

"Experimental-theoretical comparison of polarization instabilities in VCSELs"

"Modelling of electronic states in InAs/GaAs quantum dots emitting around 1.3 m""Linewidth measurements of 1.5 µm VCSELs"

"Inclusion of distortion and noise in rate equations for VCSELs" "Experimental study of the dynamics of polarisation switching in VCSELs"

15 STMsSo far

Twomorethis

summer

15 STMsSo far

Twomorethis

summer

KTH


COST 268 meetingsCOST 268 meetings• WG/MC meeting, 981019, Brussels 20 participants

• WORKSHOP +WG/MC MEETING, 990315-17, Stockholm, 70 participants workshop: “Wavelength scale photonics”.

• WG/MC, 991018-19 at FORTH, Crete, Greece 40 participants

• WG/MC, 000316-17, University College, Cork, Ireland 50 participants

• WORKSHOP and WG/MC,000828-30, Brussel 90 participantsworkshop: “European workshop on VCSELs: from physics to applications”

• WORKSHOP and WG/MC Würzburg, 010225-28 50 participants workshop: “International workshop on novel gain materials”

• WORKSHOP and MC/WG meetings, Lecce, 010916-19, 2001 50 participantsworkshop: “GaAs based light emitters for 1300nm”

• COST 268 MC/WG meetings, Warsaw, 020425-26, 2002. 180 participants coorganised with ICTON, ESPC, COST 266 and COST 267Workshops: “Transparent optical networks”, “European Photonic Crystal Symposia”

KTH


COST 268 self evaluation COST 268 self evaluation

• Scientific work has been running well- WG1 very active with many publications- WG2 relatively active with good collaborations- WG3 started sub-critical mass and took time to get running

• COST 268 efficient in using COST modalities- Short term missions, workshops, WG meetings

• COST 268 has contributed to coordination & dissemination- links with IST & individual IST projects

• Preparation of FP6- EoI generated from COST 268 (at least two)

KTH


Nano- and ultrafast Nano- and ultrafast photonicsphotonics- a proposal to COST TIST- a proposal to COST TIST

Top-down need

Flexible networkcapable to

handle very high speedtraffic

Top-down need

Flexible networkcapable to

handle very high speedtraffic

COST 267 COST 268

IST

Beyond 40 Gb/soptical signal processingsmart integrated opticsharness nano-photonics

…Preparing for

next & next-nextphotonic infrastructure

KTH


Linear and non-linear optical Linear and non-linear optical properties of photonic crystalsproperties of photonic crystals – for – for COST PhysicsCOST Physics

Compact integrated optics

Tailored light emitters

Efficient non-linear optics

Quantum effects

Compact integrated optics

Tailored light emitters

Efficient non-linear optics

Quantum effects

1510 1520 1530 1540 1550 1560 1570 1580 1590 1600 1610 16200

0.001

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0.006

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0.01

Wavelength ()T

ran

smis

sio

n

Ultra-compact Ultra-compact filterfilter

KTH


SummarySummary• COST 268, we believe, worked very well

• Technical work well in focus to current worldwide research interest

• Follow-up action(s) planned

• COST 268 paving the way for NoE and IP in FP6

- Strongly motivated from scientific need & expected commercial need

The web-site remains open http://www.ele.kth.se/COST268/

The web-site remains open http://www.ele.kth.se/COST268/

kth cost 268,thessaloniki 2002 /a. karlsson cost 268 wavelength scale photonic components for...

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