Department of Applied Physics and Electromagnetism, University of Valencia, Dr. Moliner 50, Burjassot 46100, Spain.
Opt Lett. 2011 Apr 15;36(8):1518-20. doi: 10.1364/OL.36.001518.
We present an experimental demonstration of energy transfer between counterpropagating cladding modes in a fiber Bragg grating (FBG). A strong FBG written in a standard photosensitive optical fiber is illuminated with a single cladding mode, and the power transferred between the forward propagating cladding mode and different backward propagating cladding modes is measured by using two auxiliary long period gratings. Resonances between cladding modes having 30 pm bandwidth and 8 dB rejection have been observed.
我们展示了光纤布拉格光栅（FBG）中反向传播包层模式之间能量转移的实验演示。用单个包层模式对标准光敏光纤中写入的强 FBG 进行照明，并使用两个辅助长周期光栅测量前向传播包层模式和不同反向传播包层模式之间的功率转移。观察到具有 30 pm 带宽和 8 dB 抑制的包层模式之间的共振。
