%0 Journal Article %T Highly sensitive tapered optical fiber coupler-based gas refractive index sensor enhanced by the Vernier effect %A Hao, Jinqing %A Han, Bingchen %J Optical Engineering %V 59 %N 6 %P 066102-066102 %@ 0091-3286 %D 2020-06-01 %I SPIE %~ DeepDyve