Abstract
We report the calculation of the attenuation coefficient of a probing optical mode due to interaction with metallic nanoparticles randomly distributed in the air holes of a solid core photonic crystal fiber (PCF) for SERS-based sensing and detection. The approach employed is an approximation of the solid core PCF with conventional curricular fiber considering a similar total internal reflection mechanism for mode propagation and almost complete concentration of the mode flux in the core of PCF. Losses due to the absorption and radiative scattering of electromagnetic energy by nanoparticles are examined. The analysis demonstrates a critical dependence of the absorption losses approaching the resonant localized surface plasmon's excitation and very fast rise of radiative losses with the increase of nanoparticle size. The physics of proper integral Raman spectroscopy is also discussed.
Original language | English |
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Article number | 60050F |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 6005 |
DOIs | |
State | Published - 2005 |
Event | Photonic Crystals and Photonic Crystal Fibers for Sensing Applications - Boston, MA, United States Duration: 24 Oct 2005 → 25 Oct 2005 |
Keywords
- Evanescent field
- Mode attenuation coefficient
- Nanoparticles
- PCF
- Proper integral Raman spectroscopy
- SERS