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COST 270 Thessaloniki, 20/21. 6. 2002 Reliability of Optical Components and Devices in Communications Systems and Networks COST Action 270 Reliability.

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Presentation on theme: "COST 270 Thessaloniki, 20/21. 6. 2002 Reliability of Optical Components and Devices in Communications Systems and Networks COST Action 270 Reliability."— Presentation transcript:

1 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks COST Action 270 Reliability of Optical Components and Devices in Communications Systems and Networks Vice chairman: Aleksandar Opacic Huber and Suhner, SWITZERLAND

2 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Overview Structure Objectives for the action and WGs Free Space Communication Results of each WG High Optical Power Issues Future issues

3 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks COST 270 MC Working group 1Working group 2 Study group 1 Study group 2 Study group 3 COST Action 270: today's structure Network Availability Components Reliability

4 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Transmission Network Aerial Manhole Direct Burried Handhole Vault or Basement Premise cabling Wall Street cabinets

5 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Action objectives methods to ascertain and improve the reliability of new types of optical components, transmission network and component costs based on performance and installation requirements, trunk, core, access and in-house networks, failure mechanisms, life tests and lifetime estimation methods collaboration: manufacturers and research institutes/universities technical background for ETSI, CENELEC, IEC, and ITU-T

6 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Working Group 1 Reliability of optical networks and systems including transport and access network and free space communication Chairman: Lena Wosinska Royal Inst. of Technology, SWEDEN

7 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Investigation of availability performance of optical networks in order to define the weak points in the network and develop a methodology for designing optical networks that are robust to failures. WG1 objective

8 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Results WG1 Availability of the optical networks –Limitations caused by reliability requirements on network design and size –Limiting factors for scalability of optical networks –Efficiency of a reparation process (fibre cable) Reliability of access networks –Review of technologies for LAN and MAN based on Ethernet and ATM Gathered reliability data for components –Rel. handbook RDF2000, France Telecom (FIT numbers of components for optical networks)

9 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Free Space Laser Communication Alternative and Supplement / Extension to existing Broadband Communication Techniques Cost effective and fast installation Broadband solution for Last Mile Access! Availability evaluation of existing systems Reliability and Availibilty is mainly determined by local wheather (fog, rain and snow )

10 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Free Space Laser Communication (cont.) Outside plant! Summer months: Availibility better than 99.9 % Fog and rain: total signal loss

11 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Working Group 2 reliability of passive components including jumper cables effects of high optical power application Chairman: Francis Berghmans SCK.CEN, BELGIUM

12 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Results WG2 Polyimide coated Fibre Bragg gratings (FBG) –Humidity transducer/ Enhanced sensitivity to temperature Connectors in outside plant –UV-light when re-connecting/ Corrosion/Re- connecting and cleaning Optical fibres –Aged fibre surface in various conditions –OLCR characterisation of standard acrylate coated fibres Optical power splitters –Present lifetime predictions are too conservative at low humidity

13 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Results WG2 (cont.) 3 Study groups were established Reliability of FBGs –state of the art of FBG reliability –Round-robin campaign on FBG measurements Life testing of polymeric fibre materials –general approach of increasing impact of natural variables (temperature, solar irradiation, moisture) to induce faster degradation A complete study plan for connectors was presented Informal liaison with standardisation bodies for passive components was set up

14 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks High Power Issues Rationale –DWDM and fibre amplifier technology networks carrying a significant amount of optical power (2 W !) High Power Effects –Raman-gain and fibers, splices and connectors? –Damage threshold, –Intrinsic or extrinsic damage, –Improvement possibilities against extrinsic damage, –New field of reliability – standardization bodies needs, –Need for new manufacturing procedures and design rules Table of components and associated high power failure modes and mechanisms was established

15 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks FP6 EoI Proposal: CHOPIN Title Coping with High Power In optical communication Networks Participation 5 institutes and 3 private companies Principle objective assess the reliability under high optical power support scientific and laboratory work contribute to world-wide standardization, network of excelence

16 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Study Group 1 optical connectors and patchcords high optical power applications reliability based on reasonable mathematical model and tailored testing procedures accepted by manufacturers, OEM/system suppliers and end users implementation in international standardization bodies. Special rapporteur: Peter Krausse Diamond SA, Switzerland

17 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Reliability/FIT Connectors Patchcords Failures - mode - mechanism Reliability/ accelerated test models - FIT Similarity effects - materials - types Field data Existing standards IEC, Telcordia Performance/ Functionality Requirements Accelerated tests - FIT Work area SG1

18 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Study Group 2: Fibres Special rapporteur: Prof. Frederique de Fornel, Univ. Bourgogne, France Study Group 3: Fibre Bragg Gratings Special rapporteur: Dr. Hans Limberger, IOA-EPFL, Switzerland Other study groups

19 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Future activities COST 270: meeting in Kista/Sweden 28/30 June 2002 (4 new participants and 1 STM) workshop (with SPIE) Oct./Nov in Brugge/Belgium WG1: models for survivability, cost studies, network optimisation weak points in the network, components reliability data requirements for components, study of FTTH networks WG2: Determination/interface within new structure Create network for high optical power impact Test activities, close liaison to standardization bodies

20 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Summary 13 signatories combination of manufacturer and institutes science based on extensive theoretical and laboratory work some results up to now high optical power issues through the whole action splitting into smaller SGs for better FoI FP6 as supporting activity liaison to standardization bodies

21 COST 270 Thessaloniki, 20/ Reliability of Optical Components and Devices in Communications Systems and Networks Thank you for your attention!


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