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首页> 外文期刊>Journal of the Optical Society of America, B. Optical Physics >Conditions for higher-order resonant modes to be excited in a photonic-crystal fiber Bragg grating
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Conditions for higher-order resonant modes to be excited in a photonic-crystal fiber Bragg grating

机译：在光子晶体光纤布拉格光栅中激发高阶共振模的条件

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摘要

The modal cutoff properties in a germanium-doped solid-core photonic-crystal fiber Bragg grating (PCFBG) are investigated with the beam propagation method. The results show that the normalized frequency V of a PCFBG depends not only on the normalized pitch Lambda/lambda but also on the normalized hole size d/Lambda. In addition, the single-mode-multimode boundary profile of the PCFBG shifts to the low normalized hole-size side in contrast to that of the pure-silica solid-core photonic-crystal fiber (pure-solid PCF). Furthermore, besides the phase-matching condition and the electric field overlapping with the grating region the inequality V-PCF > pi also should be fulfilled for the higher-order resonant modes to be excited in the PCFBG. (c) 2006 Optical Society of America.
机译：利用光束传播方法研究了掺锗固核光子晶体光纤布拉格光栅（PCFBG）的模态截止特性。结果表明，PCFBG的归一化频率V不仅取决于归一化节距Lambda / lambda，而且还取决于归一化孔尺寸d / Lambda。另外，与纯二氧化硅固体芯光子晶体光纤（纯固体PCF）相比，PCFBG的单模多模边界轮廓向低归一化孔尺寸侧移动。此外，除了相位匹配条件和与光栅区域重叠的电场之外，还应满足不等式V-PCF> pi，以便在PCFBG中激发高阶谐振模式。 （c）2006年美国眼镜学会。

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