Gain-flattening filter using long-period fiber gratings

被引：67

作者：

Harumoto, M ^{[1
]}

Shigehara, M ^{[1
]}

Suganuma, H ^{[1
]}

机构：

[1] Sumitomo Elect Ind Ltd, Yokohama R&D Labs, Yokohama, Kanagawa 2448588, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2002年 / 20卷 / 06期

关键词：

bandstop filters; coupled mode analysis; equalizers;

D O I：

10.1109/JLT.2002.1018814

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a novel structure for a gain-flattening filter, in which a conventional long-period fiber grating (LPFG) and a phase-shifted LPFG are written closely. The transmission characteristics are investigated in the case of a closely arranged configuration. For the fabrication of a phase-shifted LPFG, a UV-trimming method to control the amount of the phase shift is examined theoretically and experimentally. Finally, a 67-mm-long LPFG gain-flattening filter designed for an erbium-doped fiber amplifier is fabricated and the measured spectrum is shown.

引用

页码：1027 / 1033

页数：7

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