Optimum design of erbium-ytterbium codoped fibres for large-signal, high-pump-power applications

被引：1

作者：

Karásek, M ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Radio Engn & Elect, CR-18251 Prague 8, Czech Republic

来源：

CZECHOSLOVAK JOURNAL OF PHYSICS | 1999年 / 49卷 / 05期

关键词：

D O I：

10.1023/A:1021265913452

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A comprehensive numerical fibre amplifier model has been used to optimise erbium-ytterbium codoped active fibre for maximum gain and quantum conversion efficiency at large signal operation. The optimum cut-off wavelength of the LP11 mode has been found to increase from 800 nm at low pump powers (approximate to 50 mW) to 1400 nm at pump powers higher than 500 mW. While at low pump powers fibres with higher numerical aperture give higher quantum conversion efficiency, at high pump levels better large signal performance is achieved with fibres having lower numerical aperture.

引用

页码：895 / 907

页数：13

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