Fabrication of photonic crystal fiber optical attenuators with air hole diameter control using CO2 laser irradiation technique

被引：2

作者：

Yokota, Hirohisa ^{[1
]}

Ushiroda, Kosuke ^{[1
]}

Inoue, Naoya ^{[1
]}

Imai, Yoh ^{[1
]}

Sasaki, Yutaka ^{[1
]}

机构：

[1] Ibaraki Univ, Grad Sch Sci & Engn, Hitachi, Ibaraki 3168511, Japan

来源：

OPTICAL FIBER TECHNOLOGY | 2015年 / 23卷

基金：

日本学术振兴会;

关键词：

Photonic crystal fiber; Optical attenuator; Confinement loss; Mode field diameter mismatch loss; Cladding mode; CO2 laser irradiation;

D O I：

10.1016/j.yofte.2015.01.017

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：

Photonic crystal fiber (PCF) optical attenuators with air hole diameter control were fabricated by PCF fusion using CO2 laser irradiation technique. The diameters of air holes in the PCF cross-section were equally decreased by laser irradiation with a PCF rotation. We demonstrated that the air hole diameter or the air hole diameter ratio to pitch could be adjusted by the irradiated laser power. It was clarified that the larger attenuation could be obtained for the smaller air hole diameter ratio to pitch. The attenuation was controlled from 5 dB to 20 dB at 1550 nm-wavelength for the air hole diameter ratio to pitch from 0.35 to 0.225, where the length of air hole diameter controlled region was 10 mm. It was also clarified that the fabricated PCF optical attenuators exhibited good wavelength independent characteristics for 980 nm-, 1310 nm-, and 1550 nm-wavelengths. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：37 / 41

页数：5

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