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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Tapered and linearly chirped fiber Bragg gratings with co-directional and counter-directional resultant chirps
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Tapered and linearly chirped fiber Bragg gratings with co-directional and counter-directional resultant chirps

机译：锥形和线性fiber光纤布拉格光栅，具有同向和反向合成resultant

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摘要

A method of spectral width tailoring of tapered fiber Bragg gratings is theoretically analyzed and experimentally verified. This concept is based on inscription grating structures in which synthesis of chirps comes from both taper profile and a linearly chirped phase mask used for grating inscription. It is shown that under UV exposure and depending on the orientation of the optical fiber taper relative to the variable-pitch phase mask, tapered and linearly chirped fiber Bragg gratings (TCFBG) with resultant co-directional or counter-directional chirps are achieved. Thus, both effects, those of reduction and enhancement of the grating chirp, as well as their influence on the grating spectral response, are presented. In particular, using the above approach TCFBG with significantly narrowed spectral width are shown. Moreover, fused tapered chirped FBG with relatively large waist diameter are shown having broad spectrum, something that prior to now was not attainable using previously developed techniques. (C) 2015 Elsevier B.V. All rights reserved.
机译：从理论上分析和实验验证了锥形光纤布拉格光栅的谱宽调整方法。这个概念基于铭刻光栅结构，其中chi的合成来自锥度轮廓和用于光栅铭刻的线性phase相位掩模。结果表明，在紫外线照射下，根据光纤锥度相对于变螺距相位掩模的取向，可以实现具有最终同向或反向chi声的锥形和线性chi光纤布拉格光栅（TCFBG）。因此，提出了减小和增强光栅chi的两种效果，以及它们对光栅光谱响应的影响。特别地，示出了使用上述方法具有明显变窄的光谱宽度的TCFBG。此外，显示出腰围直径较大的熔融锥形FBG具有宽光谱，这是以前使用以前开发的技术无法实现的。 （C）2015 Elsevier B.V.保留所有权利。

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