A novel optical waveguide sensor utilizing surface plasmon resonance (SPR) that enables the measurement of optical absorption and the thickness of a thin film was proposed. A BK-7 glass slide was used as a waveguide core, and an Ag/Au film of 5 mm width and transparent polymethyl methacrylate-co-methacrylic acid (PMMA-co-PMAA) were consecutively deposited to develop the sensor. The PMMA-co-PMAA film was used to control the SPR wavelength. This sensor allows us to measure the optical absorption and thickness of the deposited film using the evanescent wave from the waveguide and the SPR phenomena, respectively. In order to demonstrate this, a layer-by-layer deposit of a film of water-soluble phthalocyanine dye (Alcian blue, pyridine variant, AB) and polystyrenesulfonate was observed. Additionally, adsorptions from a mixed solution of AB and polydiallyldimethylammonium chloride were observed.

中文翻译：

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使用表面等离振子共振的光波导传感器对酞菁层层薄膜的光吸收和沉积进行原位和同时评估

提出了一种利用表面等离子体共振（SPR）的新型光波导传感器，该传感器能够测量光吸收和薄膜的厚度。使用BK-7玻片作为波导芯，并依次沉积5mm宽的Ag / Au膜和透明的聚甲基丙烯酸甲酯-共-甲基丙烯酸（PMMA-co-PMAA），以开发传感器。PMMA-co-PMAA膜用于控制SPR波长。该传感器使我们能够分别使用来自波导的e逝波和SPR现象来测量沉积膜的光吸收和厚度。为了证明这一点，观察到了水溶性酞菁染料（阿尔辛蓝，吡啶变体，AB）和聚苯乙烯磺酸盐的逐层沉积。另外，