用超短脉冲和可调谐相位掩模写入的啁啾光纤布拉格光栅。

Chirped fiber Bragg gratings written with ultrashort pulses and a tunable phase mask.

作者信息

Voigtländer Christian, Thomas Jens, Wikszak Elodie, Dannberg Peter, Nolte Stefan, Tünnermann Andreas

机构信息

Institute of Applied Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, D-07743 Jena, Germany.

出版信息

Opt Lett. 2009 Jun 15;34(12):1888-90. doi: 10.1364/ol.34.001888.

DOI:10.1364/ol.34.001888

PMID:19529737

Abstract

We report a fabrication technique for chirped fiber Bragg gratings (CFBGs) using a flexible setup based on a poly(methyl-methacrylate) phase mask. The period of the phase mask can be thermally tuned during the inscription process, allowing the grating period of uniform fiber Bragg gratings to be shifted about 7 nm by a temperature change of 74 K. In addition, CFBGs with bandwidths up to 2 nm are demonstrated in non-photosensitive fibers by IR femtosecond inscription.

摘要

我们报告了一种基于聚甲基丙烯酸甲酯相位掩膜的灵活装置制作啁啾光纤布拉格光栅（CFBG）的技术。在写入过程中，相位掩膜的周期可以进行热调谐，通过74 K的温度变化可使均匀光纤布拉格光栅的光栅周期偏移约7 nm。此外，通过红外飞秒写入在非光敏光纤中展示了带宽高达2 nm的CFBG。