论文标题
方向耦合器的超高和超低光谱灵敏度同时存在
Simultaneous existence of ultra-high and ultra-low spectral sensitivity for Directional Couplers
论文作者
论文摘要
我们提供了存在两个令人兴奋的波长的实验证据，这些波长称为光纤方向耦合器的透射光谱中的关键和交叉波长，它们的性质彼此共轭。与传输最大值/minima相关的光谱移位突然围绕这些波长翻转，光谱显示最接近临界（在交叉）波长的最大传输最大值/最小值的光谱偏移，对应于相同的扰动参数。还提出了对观察到的实验行为的理论解释，强调了这些波长存在的基本机制是完全不同的。为了避免错误警报，需要了解这些波长的精确光谱位置。
We present the experimental evidence for the existence of two exciting wavelengths, termed critical and cross-over wavelength in the transmission spectrum of fiber-optic directional coupler, whose properties are conjugate to each other. The spectral shift associated with the transmission maxima/minima suddenly flip around these wavelengths and the spectrum shows largest (nil) spectral shift for the transmission maxima/minima closest to the critical ( at the cross-over) wavelength, corresponding to the same perturbation parameter. A theoretical explanation of the observed experimental behavior has also been presented, highlighting that the underlying mechanisms for the existence of these wavelengths are entirely different. The knowledge of the precise spectral location of these wavelengths is necessary to avoid false alarms.
