Bhadra, Shyamal Kumar and Sen, Ranjan and Pal, Mrinmoy and Paul, Mukul Chandra and Naskar, Milan Kanti and Chatterjee, S and Chatterjee, Minati and Dasgupta, Kamal (2003) Development of rare-earth doped fibres for amplifiers in WDM systems. IEE Proceedings-Circuits Devices and Systems, 150 (6). pp. 480-485. ISSN 1350-2409

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Abstract

Rare-earth (Er, Yb, Nd etc.) doped alumino-germano-silicate preforms and fibres with extensive variation in rare-earth (RE) concentration, composition, and proportion of codopants as well as waveguide parameters were fabricated by the modified chemical vapour deposition (MCVD) process in combination with the solution-doping and sol-gel methods. The fibres were characterised for evaluation of the optical properties including refractive index profile, numerical aperture, spectral attenuation, cut-off wavelength, concentration and distribution of the RE, Giles parameters and also the optical gain. The fabricated fibres had Er ion concentrations varying between 100 and 1000 ppm and numerical apertures in the range 0.17-0.24. Some of the fibres are suitable for use in C-band optical amplifiers.

Item Type:	Article
Additional Information:	6th International Conference on Optoelectronics, Fibre Optics and Photonics, MUMBAI, INDIA, DEC, 2002
Subjects:	Processing Science
Divisions:	UNSPECIFIED
Depositing User:	Subhra Lahiri
Date Deposited:	13 Feb 2012 11:17
Last Modified:	13 Feb 2012 11:17
URI:	http://cgcri.csircentral.net/id/eprint/773

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