The effects of polarization of the incident light-modeling and analysis of a SPR multimode optical fiber sensor

Theoretical Analysis of Gold-deposited Optical Fiber Sensor and Characterization of the Gold Film

“…3,[6][7][8][9][10][11]14,15 Jorgenson and Yee 3 replaced the prism by a multi-mode optical fiber and applied the traditional SPR theory to the silver-deposited optical fiber sensor. Trouillet et al 6 and Lin et al 7 developed a threedimensional model of a multi-mode optical fiber covered with a silver or gold film, and concluded that the light energy transmitted out of the fiber is not affected by the polarization of the incident light. Liu et al 14 calculated the reflectance curves of a multi-mode optical fiber covered with a silver film using a multiple-reflection theory, and also considering an angle range of incident light.…”

“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16] A typical type of the optical fiber sensor based on SPR has a thin (several tens of nanometers) deposited silver or gold film around an exposed core of a multi-mode optical fiber, and the core is used instead of a coupling prism of the SPR sensor system. [3][4][5][6][7] These systems are constructed by modifying a traditional SPR sensor system, and scan the wavelength 3 or change the angle of incident light. [4][5][6][7] Another type of the sensor based on SPR in a thin deposited gold film on the core of a side polished single-mode optical fiber implanted in a silica block has been developed.…”

“…[3][4][5][6][7] These systems are constructed by modifying a traditional SPR sensor system, and scan the wavelength 3 or change the angle of incident light. [4][5][6][7] Another type of the sensor based on SPR in a thin deposited gold film on the core of a side polished single-mode optical fiber implanted in a silica block has been developed. [8][9][10][11] Though this type of sensor has high resolution, probably because of an optimum bend of the singlemode optical fiber, and no need to change the incident angle, fabrication of the sensing element and the optics of the system are complicated.…”

“…3,[6][7][8][9][10][11][12][13][14][15][16] However, these analyses were made for the sensors in a restricted range of the refractivity (less than 1.45 RI units), and thus a theoretical investigation concerning the response of the gold-deposited optical fiber sensor in a wider range of the refractivity is necessary to understand the mechanism of the response. Morphology observations of gold films deposited on glass by a scanning tunneling microscope (STM) and atomic force microscope (AFM) have been carried out.…”

Analytical sensitivity and reflected power through a D-shape optical fibre sensor

“…W.B. Lin et al [13] have investi− gated the effect of polarization of the incident light−mode− lling and analysis of a SPR multimode optical fibre sensor.…”