| 摘要 |
An optical amplifier comprises, an optical fibre 6 for temperature compensation inserted between an excitation light source 7 and an optical fibre I for optical amplification. The optical fibre 6 for temperature compensation changes the supply quantity of the excitation light with temperature change, to thereby compensate for variations in gain with temperature change of the optical fibre for optical amplification. The optical fibre 6 for temperature compensation may be a rare earth element-doped optical fibre. The rare earth element may be for example, samarium (Sm), thulium (Tm), neodymium (Nd), erbium (Er),or praseodymium (Pr). The optical fibre for temperature compensation may have a core doped with an amount of Er ranging from 1000 to 2000 ppm. A temperature compensation method for an optical amplifier is also disclosed. |
