Shamir Avishay, Ishaaya Amiel A
Opt Lett. 2016 Feb 15;41(4):765-8. doi: 10.1364/OL.41.000765.
Pre- and post-treatment of optical fibers is typically used to improve the fiber Bragg grating (FBG) fabrication process. Here, we investigate experimentally the effects of femtosecond photo-treatment on the ability to inscribe and erase FBGs in standard, non-sensitized, silica SMF fibers. We observe "immunity" to inscription after applying a suitable pre-treatment to the fiber and full "erasure" of the FGB after applying a suitable post-treatment. We characterize the required photo-treatment parameters and compare to FBG inscription on an untreated fiber. We believe that pre/post-photo-treatment of the fibers with fs pulses may have practical advantages such as modifying standard grating structures or observing ultrafast transient effects more clearly.
光纤的预处理和后处理通常用于改善光纤布拉格光栅（FBG）的制造工艺。在此，我们通过实验研究了飞秒光处理对在标准、未敏化的二氧化硅单模光纤（SMF）中写入和擦除FBG能力的影响。我们观察到，在对光纤进行适当的预处理后出现写入“免疫”现象，以及在进行适当的后处理后FBG完全“擦除”。我们对所需的光处理参数进行了表征，并与未处理光纤上的FBG写入情况进行了比较。我们认为，用飞秒脉冲对光纤进行预处理/后处理可能具有实际优势，比如修改标准光栅结构或更清晰地观察超快瞬态效应。
