Title :
Gain-flattened tellurite-based EDFA with a flat amplification bandwidth of 76 nm
Author :
Yamada, M. ; Mori, A. ; Kobayashi, K. ; Ono, H. ; Kanamori, T. ; Oikawa, K. ; Nishida, Y. ; Ohishi, Yasutake
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki, Japan
Abstract :
We describe a tellurite-based Er/sup 3+/-doped fiber amplifier (EDFA) with a flat amplification bandwidth of 76 nm and a noise figure of less than 7 dB. Furthermore, a parallel-type amplifier composed of this EDFA and a 1.45-μm-band Tm/sup 3+/-doped fluoride fiber amplifier achieved a flat amplification bandwidth of 113 nm.
Keywords :
erbium; fibre lasers; laser noise; optical communication equipment; 1.45 mum; Er/sup 3+/-doped fiber amplifier; Tm/sup 3+/-doped fluoride fiber amplifier; flat amplification bandwidth; gain-flattened tellurite-based EDFA; noise figure; parallel-type amplifier; Bandwidth; Doped fiber amplifiers; Equalizers; Erbium; Erbium-doped fiber amplifier; Optical fiber amplifiers; Optical fiber polarization; Optical fibers; Optical materials; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
