文献类型：期刊文献

英文题名：Programmable anisotropic soft matrix enabling robust active waveguide film

作者：Wang, Zhaoyi[1];Sun, Peizhi[1];Yuan, Conglong[1];Hu, Honglong[1];Heng, Hongbo c[1];Shen, Ning[2];Zheng, Zhi-gang[1]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：32

期号：26

起止页码：47173

外文期刊名：OPTICS EXPRESS

收录：;EI(收录号：20245217587481);WOS:【SCI-EXPANDED(收录号:WOS:001390515400010)】；

语种：英文

外文关键词：Fiber optic sensors - Light propagation - Optical anisotropy - Photonic devices

摘要：In soft matrix, liquid crystals (LCs) enable low-temperature integration of multiple optical modules, owing to their remarkable programmability and anisotropicity. However, achieving efficient coupling of light source to waveguide remains challenging, primarily due to their refractive index mismatches and alignment deviations. Herein, we developed a robust waveguide film with an integrated active light source, utilizing a laser-dye-doped LC soft matrix, where efficient coupling is achieved by precisely controlling the LC alignment and careful positioning of the external pump spot to induce amplified spontaneous emission within the waveguide. This active waveguide film provides efficient light conduction with optical loss coefficients as low as 0.08 dB/mm. The special design LC arrangement in waveguide enables the manipulation of light propagation direction such as linear propagation and 180 degrees turns. Furthermore, a four-channel equal-power splitter is established for multi-channel light output. This robust active waveguide film device demonstrates remarkable stability under high temperatures, humidity, and harsh chemical environments, along with excellent fatigue resistance. This study lays a solid foundation for the development of optical chips optimized for programmable integrated photonic systems. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement