Mergo Pawel, Martynkien Tadeusz, Urbanczyk Waclaw
Opt Lett. 2014 May 15;39(10):3018-21. doi: 10.1364/OL.39.003018.
We report on the fabrication of a birefringent microstructured PMMA fiber with polystyrene stress-applying elements located in the solid part of the cladding. A microstructured part of the cladding composed of three rings of holes was made of a technical-grade PMMA by a drilling method. The fiber shows a relatively high birefringence of the order of 4×10(-5), which weakly depends upon wavelength in the investigated spectral range from 0.6 to 1 μm. The cross talk between polarization modes is lower than -20 dB for a 1 m long fiber, while the fiber loss is about 8 dB/m at 0.83 μm. We also studied the fiber response to temperature in the range from 20°C to 60°C. The temperature induced birefringence change is negative and shows a significant hysteresis in the first cycle, which gradually disappears in successive cycles.
我们报道了一种双折射微结构聚甲基丙烯酸甲酯（PMMA）光纤的制造方法，该光纤在包层的固体部分设有聚苯乙烯应力施加元件。包层的微结构部分由三排孔组成，采用钻孔法由工业级PMMA制成。该光纤显示出相对较高的双折射，约为4×10⁻⁵，在0.6至1μm的研究光谱范围内，其对波长的依赖性较弱。对于1米长的光纤，偏振模式之间的串扰低于-20dB，而在0.83μm处光纤损耗约为8dB/m。我们还研究了该光纤在20°C至60°C范围内对温度的响应。温度引起的双折射变化为负，并且在第一个循环中显示出明显的滞后现象，该现象在后续循环中逐渐消失。
