A Fast Responsive Refractometer Based on the Side-opened, Dual-core Photonic Crystal Fiber
For enhancing the sensitivity properties and accelerating the responsive characteristics at the same time, a novel refractometer based on a side-opened, dual-core photonic crystal fiber and dual-beam coupling detecting mechanism is proposed and analyzed here. The improvement is replacing a part of a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IFSA Publishing, S.L.
2013-04-01
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| Series: | Sensors & Transducers |
| Subjects: | |
| Online Access: | http://www.sensorsportal.com/HTML/DIGEST/april_2013/Special_Issue/P_SI_322.pdf |
| Summary: | For enhancing the sensitivity properties and accelerating the responsive characteristics at the same time, a novel refractometer based on a side-opened, dual-core photonic crystal fiber and dual-beam coupling detecting mechanism is proposed and analyzed here. The improvement is replacing a part of air holes of conventional dual-core photonic crystal fiber by one large circular hole, while the laterial segment of this large circular hole is supposed to be side opened. This side-opened fiber configuration makes fast responsive characteristics by allowing fluidic target approaching one of the fiber cores laterally and quickly. The dual-beam coupling mechanism ensures a relative higher optical sensitivity. Numerical simulation results show that a sensitivity of 3.8e-5RIU could be achievable, which reflects its potential value on high sensitive and fast responsive detection applications. Besides, the relation of the optical sensitivity and the dynamic detected index range on this novel dual core photonic crystal fiber structure, optical mode polarization and the transmitting waveband is also analyzed.
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| ISSN: | 2306-8515 1726-5479 |