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  • Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technologies
  • Technical Digest (CD) (Optica Publishing Group, 2004),
  • paper CWA77

Broadband emissions in Er3+-Tm3+ codoped tellurite glass fibre

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Abstract

Gain flattening techniques are often used to broaden the amplification bandwidth of Er3+-doped fibre amplifiers (EDFA) in order to increase the transmission capacity of wavelength-division-multiplexing (WDM) transmission systems in the 1.5 µm band [1]. The gain flatness of a tellurite fibre based EDFA supersedes those of silica fibre and fluoride fibre EDFAs. In tellurite fibre EDFA, a gain-flattened amplification of 20 dB across a spectrum of 80 nm between 1530 and 1610 nm [2] was demonstrated. By combining a tellurite fibre with Er3+dopant and a fluoride fibre with Tm3+-ion dopant, the maximum gain flatness in two discrete S- and C+L bands is 113 nm [1]. Since the amplifier bandwidth in Tm3+-doped tellurite [3-5] is of the order of 110 nm in the 1410 to 1520 nm, there is an opportunity for developing an Er-Tm doped fibre with a seamless amplification bandwidth and flattened spectrum over 1410 nm to 1610 nm, which will be an ideal device for WDM.

© 2004 Optical Society of America

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