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KTH COST 268,Thessaloniki 2002 /A. Karlsson COST 268 Wavelength Scale Photonic Components for Telecommunications Final report presentation COST 268 Wavelength Scale Photonic Components for Telecommunications Final report presentation Anders Karlsson, Chairman Dep. Microelectronics & Kista Photonics Research Center Royal Institute of Technology-KTH, Kista, Sweden

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Outline COST 268 scientific backgroundCOST 268 scientific background COST 268 accomplishmentsCOST 268 accomplishments COST 268 ”offsprings” - new COST proposals & FP6 EoICOST 268 ”offsprings” - new COST proposals & FP6 EoI

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Photonics & market? http://www.lightreading.com/ Nasdaq 10 optical companies IT backlash has hit photonics But, only photonics can provide long term infrastructure recovery when? Flexible all-optical network IT backlash has hit photonics But, only photonics can provide long term infrastructure recovery when? Flexible all-optical network

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KTH COST 268,Thessaloniki 2002 /A. Karlsson 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

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KTH COST 268,Thessaloniki 2002 /A. Karlsson COST 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

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KTH COST 268,Thessaloniki 2002 /A. Karlsson COST 268 Organisation WG3 Novel gain materials Chair: Alfred Forchel, Univ. Wurtzburg, Andrea Fiore, Roma & EPFL Eli Kapon, EPFL, Switzerland WG2 Photonic Crystals Chairs: Richard M De La Rue Glasgow Univ., Rene DeRidders Twente George Kiriakidis, FORTH, Greece WG1 Vertical cavities Chair: Jan Danckaert, VuB Roel Baets, Peter Bienstmann, Univ. Gent Karl-Heinz Gulden CSEM, Zurich, Management Committee COST TCT & TC secretariat Chair, vice-chair +administration

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Participation in COST 268 Large community -19 member countries - 3 associated members - more than 40 groups - Universities and industries

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KTH COST 268,Thessaloniki 2002 /A. Karlsson COST 268 sample results lModulation 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 l KTH&Zarlink (MITEL) invited paper Photonics West 2000

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KTH COST 268,Thessaloniki 2002 /A. Karlsson VCSEL modeling I... Resonance wavelength (d=8 um) 978,5 979,0 979,5 980,0 980,5 981,0 981,5 2345 position Gent Chalmers Air Force CSEM Planar Torino Torino LP Berlin Illinois Investigate position dependent effect of 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

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KTH COST 268,Thessaloniki 2002 /A. Karlsson VCSEL modeling II... 10 -5 0,0001 0,001 0,01 0,1 1 00,511,522,533,54 Turn-on 1-3 Ith Power (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

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KTH COST 268,Thessaloniki 2002 /A. Karlsson WG 2 Modeling Exercise Goal: understand role of losses in deeply etched gratings Importance: compact integrated optics for DWDM COST 268: Comparative modeling by Prague, Hagen, Twente, Gent, and Glasgow

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KTH COST 268,Thessaloniki 2002 /A. Karlsson STMs an important vehicle “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 STMs So far Two more this summer 15 STMs So far Two more this summer

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KTH COST 268,Thessaloniki 2002 /A. Karlsson COST 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 participants workshop: “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 participants workshop: “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 267 Workshops: “Transparent optical networks”, “European Photonic Crystal Symposia”

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KTH COST 268,Thessaloniki 2002 /A. Karlsson 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)

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Nano- and ultrafast photonics - a proposal to COST TIST Top-down need Flexible network capable to handle very high speed traffic Top-down need Flexible network capable to handle very high speed traffic COST 267 COST 268 IST Beyond 40 Gb/s optical signal processing smart integrated optics harness nano-photonics … Preparing for next & next-next photonic infrastructure

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Linear and non-linear optical properties of photonic crystals – for COST 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 Ultra-compact filter

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KTH COST 268,Thessaloniki 2002 /A. Karlsson Summary 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/

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