We propose a new magneto-optical optical Tamm state (MOOTS) sensor in fluid detection. The device consists of a dielectric magneto-optical thin film of Ce-doped Y₃Fe₅O₁₂ (CeYIG), a metallic film of Ag and a periods of the distributed Bragg reflector (DBR). Finite element method (FEM) and 4 × 4 transfer matrix method are employed to calculate the figure of merit (FOM) of sensitivity. Calculation results indicate that a FOM of 1224.21/RIU for gas refractive index variation from 1.0000 to 1.0006 can be obtained when the incident wavelength is 1064 nm, which is much larger than the FOM of magneto-optical surface plasmon resonance (MOSPR) device. Meanwhile, our MOOTS sensor is insusceptible to the influence of smoothness of the interface of deposited layers and can provide the great error tolerance, which is more conducive to the manufacture, production and actual performance. In addition, the experiment route to detect the refractive index of air and NaCl solution has been revealed.

我们提出了一种用于流体检测的新型磁光光学塔姆状态（MOOTS）传感器。该装置由掺杂Ce的Y ₃ Fe ₅ O ₁₂的介电磁光薄膜组成（CeYIG），Ag的金属膜和一定周期的分布式布拉格反射器（DBR）。采用有限元法（FEM）和4×4传递矩阵法来计算灵敏度的品质因数（FOM）。计算结果表明，当入射波长为1064 nm时，气体折射率从1.0000到1.006的FOM为1224.21 / RIU，远大于磁光表面等离子体共振（MOSPR）器件的FOM。同时，我们的MOOTS传感器不受沉积层界面光滑度的影响，并且可以提供很大的误差容限，更有利于制造，生产和实际性能。另外，揭示了检测空气和NaCl溶液的折射率的实验路线。