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Bragg fiber design for linear polarization

机译:布拉格光纤设计可实现线性极化

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摘要

A new design is presented for Bragg fibers that allows low-loss propagation for linearly polarized light. Predictions based on a simple ray model show that approximately doubling the thickness of the first wall layer results in low losses at TM-like boundaries while keeping TE-like boundary losses manageable. This contrasts sharply with conventional quarter-wave designs that are extremely low loss for TE_(01) modes but very high loss for linear polarization. We fabricate Bragg fibers based on this design concept in a Si/SiO_(2) system and verify experimentally that they propagate linearly polarized light with losses less than 6 dB/cm over a 60-nm spectral range.
机译:提出了一种针对布拉格光纤的新设计,该设计允许线性偏振光的低损耗传播。基于简单射线模型的预测表明,将第一壁层的厚度大约加倍会导致在TM类边界处的损失小,而使TE类边界损失可控。这与传统的四分之一波设计形成了鲜明的对比,传统的四分之一波设计对于TE_(01)模式损耗极低,而对于线性极化损耗则非常高。我们基于此设计概念在Si / SiO_(2)系统中制造布拉格光纤,并通过实验验证了它们在60 nm光谱范围内传播的线性偏振光的损耗小于6 dB / cm。

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