Accurate tuning of mismatched twin-core fiber filters.
Accurate tuning of mismatched twin-core fiber filters.
复制标题
精确调谐不匹配的双芯光纤滤波器。
DOI：
10.1364/ol.23.001277
复制
发表时间：
1998
期刊：
影响因子：
3.6
通讯作者：
L. Dong
中科院分区：
文献类型：
--
作者：
B. Ortega;L. Dong
我们已经证明了一种可重复且准确的调谐不匹配双芯滤波器耦合波长的方法。这种方法允许高品质的全光纤滤波器，以实现在任何期望的波长在几百纳米的范围内从同一光纤的低损耗。一个~500 nm的调谐范围被证明，仅由测量设置，而不是由技术本身的限制。通过调节双芯光纤的长度来高度精确地控制滤波波长并结合控制滤波强度，这允许通过级联几个不同的滤波器来实现复杂的滤波器轮廓。这些过滤器对温度变化（1.55微米时约0.26 nm/100 ℃）和应变（1.55微米时小于0.3 nm/mstrain）也非常稳定，便于包装。
We have demonstrated a reproducible and accurate way of tuning the coupling wavelength of a mismatched twin-core filter. This method allows high quality all-fiber filters to be implemented with low loss at any desired wavelength over a range of few hundred nanometers from the same fiber. An ~500-nm tuning range is demonstrated, limited only by the measurement setup and not by the technique itself. Highly accurate control of the filtering wavelength in combination with control of filtering strength by adjustment of the length of the twin-core fibers allows complex filter profiles to be implemented by cascading of several different filters. These filters are also very stable to a change in temperature (~0.26 nm/100 degrees C at 1.55 microm) and strain (less than 0.3 nm/mstrain at 1.55 microm), permitting easy packaging.