1550nm低损耗单模全固态光子带隙光纤研究

全固态光子带隙光纤由于其独特的带隙和色散特性以及易于和传统光纤熔接的优势,引起了国内外研究人员的广泛关注.本文采用等离子体化学气相沉积工艺结合堆叠拉制法制备了全固态光子带隙光纤,并运用频域有限差分法模拟了其损耗和色散特性.该光纤1550 nm处有较低损耗且单模传输,计算得到1550 nm处的有效模场面积和色散分别为191.81μm2和16.418 ps/(km·nm),在测试范围1500—1650 nm内损耗小于0.15 dB/m.结合实验结果,对光纤参数做了进一步模拟优化.

Study of 1550 nm low loss single mode all-solid photonic bandgap fibers

All-solid photonic bandgap fiber shave attracted great attention of researchers due to their particular band gap and dispersion character as well as the merit of easily splicing the traditional optical fiber. We have fabricated the all-solid photonic bandgap fibers using the plasma chemical vapor deposition (PCVD) and a modified tack and draw technique, and the loss and dispersion characteristics were simulated by the finite-difference frequency-domain (FDFD) method. The fiber obtained by this method has a low-loss region at around 1550 nm and can be used as single-mode; its effective model field area and the dispersion of the fiber at 1550 nm are 191.81 μm² and 16.418 ps/(km·nm), respectively. Combined with the experimental results, the fiber parameters are further optimized by simulation.
Keywords： all-solid photonic bandgap fibers photonic band gap loss