Journal
IEEE PHOTONICS JOURNAL
Volume 5, Issue 6, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2013.2292302
Keywords
Yb3+ doped PCF; PCF-laser-based sensing; sensor of refractive index; surface plasmon resonance (SPR)
Funding
- National Basic Research Program of China (973 Program) [2010CB327801]
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We propose a surface plasmon resonance (SPR) refractive index (RI) sensor based on an active Yb3+-doped photonic crystal fiber (PCF) in this paper. With the proposed sensor, using the pump light at 976 nm can produce laser at 1060 nm. In addition, the sensitivity can be influenced obviously by a bit change of the refraction index of analyte in the air holes to achieve the intra-cavity fiber sensing. It is found that not only the different air-filling ratios but also the different analyte RIs of n(a) > 1.45 or n(a) < 1.45 have different effects on the output power and confinement loss, and lead to different trends. The intra-cavity PCF sensing system has great practical value and significance for their advantages of compact structure and high sensitivity.
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