Theoretical design and optimization of combination tapered optical fiber SERS probes

Abstract

Abstract: The structural parameters of combination tapered optical fiber surface enhanced Raman scattering（SERS）probes have been designed and optimized. By building the excitation light attenuation coefficient model based on evanescent wave excitation the nanoparticles on the surface of combination tapered optical fiber, and considering the total refraction theory of the excited light in the gradient core section and the mode-matching principle between the probe straight core section and the excitation fiber, the structure parameters design and optimization method of the combination tapered SERS probe have been presented. With given fiber, nanoparticle structure, surrounding environment and input excitation power, an example of simulation design for the structural parameters of such optical fiber SERS probes are carried out by using our presented method.

Key words: fiber and waveguide optics, combination tapered optical fiber probe, light attenuation effect, mode-matching conditions, surface enhanced Raman scattering

CLC Number:

O439
TN253

ZHANG La-mei, LIAO Yan-lin, FAN Qun-fang, CAO Jie, LIU Ye, MAO Qing-he. Theoretical design and optimization of combination tapered optical fiber SERS probes[J]. J4, 2013, 30(3): 354-359.

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