Study to improve the specification of the cut off wavelength of optical fibre

Projektinformationen

ID Finanzhilfevereinbarung: MAT1940020

Startdatum 1 August 1994

Enddatum 31 Januar 1997

Finanziert unter

• Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994

Gesamtkosten € 0,00

EU-Beitrag Keine Daten

Koordiniert durch

NPL MANAGEMENT LTD.
United Kingdom

Ziel

Optical fibre is the dominant medium for communications systems. Each length of fibre must meet a specified performance before being incorporated into telecommunications networks. The cut-off wavelength defines the wavelength above which only one mode is guided. This parameter cannot be as yet measured with satisfactory precision, especially in the case of active fibres. The overall objective of the project is to reduce the uncertainty with which cut-off wavelength is measured down to +/- 2 nm.

The project consists of two phases:

1: research in order to:

- carry out a set of studies of the CCITT test method based on the transmitted power technique, to unambiguously identify the nature and cause of spectral anomalies in both passive and active fibres;
- investigate an innovative test method for the determination of the cut-off wavelength based on the variation with wavelength of the mode field diameter. This method is expected to be less sensitive to spectral anomalies for all fibre types.

2: round-robin intercomparison of measurements of cut-off wavelength, incorporating the improvements in measurement techniques defined in phase 1.

Wissenschaftliches Gebiet

• engineering and technology › electrical engineering, electronic engineering, information engineering › information engineering › telecommunications › telecommunications networks
• natural sciences › physical sciences › optics › fibre optics

Programm/Programme

• FP3-MAT - Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994

Thema/Themen

Data not available

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

CSC - Cost-sharing contracts

Koordinator

NPL MANAGEMENT LTD.

• EU-Beitrag: Keine Daten
• Adresse: Queens Road 33 ; TW11 0LW TEDDINGTON ; Vereinigtes Königreich
• Gesamtkosten: Keine Daten

Beteiligte (1)

Centro Studi e Laboratori Telecomunicazioni SpA

Italien

• EU-Beitrag: Keine Daten
• Adresse: Via G. Reiss Romoli, 274 ; 10148 TORINO
• Gesamtkosten: Keine Daten