Zhefeng Hu

Nov 12, 2024 | opg.optica.org | Hao Zhang |Zhiying Zhao |Zhefeng Hu |Kaixin Chen

AbstractIn this paper, we propose and experimentally demonstrate a highly sensitive liquid refractive index (RI) sensor based on a two-mode interferometer (TMI) formed with a polymer ridge waveguide. Compared with the rectangular waveguide TMI sensor, our proposed ridge waveguide TMI sensor enables a higher waveguide sensitivity and hence device sensitivity.