Beugin V, Bigot L, Niay P, Lancry M, Quiquempois Y, Douay M, Mélin G, Fleureau A, Lempereur S, Gasca L
Laboratoire de Physique des Lasers, Atomes et Molécules, Universités des Sciences et Technologies de Lille, Villeneuve d'Ascq, France.
Appl Opt. 2006 Nov 10;45(32):8186-93. doi: 10.1364/ao.45.008186.
We present ArF laser-induced dynamics of Bragg grating (BG) growths in phosphosilicate-doped or germanosilicate-doped core photonic crystal fibers (PCFs). To this end, we have adapted the technique of H2 loading, usually used in conventional fiber, to the case of microstructured fiber, allowing both the concentration of hydrogen in the PCFs to be kept nearly constant for the time of the exposure and the BG spectra to be easily recorded. We compared the characteristics of BG growths in the two types of PCF to those in conventional step-index fibers. We then conducted a study of the thermal stability of the BGs in PCFs through 30 min of isochronal annealing. At the same time we discuss the role played by the microstructuration and the doping with regard to the grating contrast and the Bragg wavelength stability.
我们展示了在掺磷硅酸盐或掺锗硅酸盐纤芯光子晶体光纤（PCF）中，ArF激光诱导的布拉格光栅（BG）生长动力学。为此，我们将通常用于传统光纤的氢气加载技术应用于微结构光纤的情况，使得在曝光期间PCF中的氢气浓度几乎保持恒定，并且易于记录BG光谱。我们将两种类型PCF中BG生长的特性与传统阶跃折射率光纤中的特性进行了比较。然后，我们通过30分钟的等时退火对PCF中BG的热稳定性进行了研究。同时，我们讨论了微结构和掺杂在光栅对比度和布拉格波长稳定性方面所起的作用。
