Fiber optic surface plasmon resonance sensor with a Bragg grating

Radan Slavik; Jiri Ctyroky; Jiri Homola

doi:10.1117/12.373614

29 December 1999 Fiber optic surface plasmon resonance sensor with a Bragg grating

Radan Slavik, Jiri Ctyroky, Jiri Homola

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373614
Event: Photonics Prague '99, 1999, Prague, Czech Republic

Abstract

We report a new optical sensor based on excitation of a surface plasmon in an optical fiber Bragg grating (FBG) structure. The sensing device consists of a side-polished single-mode optical fiber with a Bragg grating written into a fiber core and a thin gold overlayer supporting SP. If a coupling between a guided mode of the optical fiber and a SP mode is established, any change in the refractive index of analyte affects propagation constant of the fiber mode producing a change in the amount of light reflected by the FBG. A laboratory prototype of the sensor has been developed and its potential for refractometry has been examined. It has been demonstrated that the sensor's sensitivity to refractive index is as high as 750 dB/RIU.

Citation Download Citation

Radan Slavik, Jiri Ctyroky, and Jiri Homola "Fiber optic surface plasmon resonance sensor with a Bragg grating", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373614

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