Broadband optically controlled switching effect in a microfluid-filled photonic bandgap fiber

Guo Junqi Liu Yan-Ge Wang Zhi Luo Ming-Ming Huang Wei Han Tingting Liu Xiaoqi · 2016

阅读量：216

纤维光学

光纤器件

光开关

期刊名称：

Journal of Optics (United Kingdom) 2016 年 18 卷 5 期

发表日期：

2016.05.01

摘要：

Broadband optically controlled switching in a microfluid-filled photonic bandgap fiber (MF-PBGF) was observed and investigated. The MF-PBGF was formed by infusing a temperature-sensitive high-index fluid into all of the cladding holes of a microstructured optical fiber (MOF). The fiber was then side pumped with a 532 nm continuous wave laser. An extinction ratio of greater than 20 dB at most of the bandgap wavelengths (more than 200 nm) was obtained with a switching power of ???147 mW. Theoretical and experimental investigations revealed that the effect originated from changes in the temperature gradient induced by heat absorption of the fiber coating with laser illumination. These investigations offer a new and simple approach to achieve wideband and flexible all-optical fiber switching devices without using any photosensitive materials.