论文成果
Mid-infrared surface plasmon resonance sensor based on silicon-doped InAs film and chalcogenide glass fiber
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- 论文类型：期刊论文
- 发表时间：2019-12-01
- 发表刊物：OPTICS AND LASER TECHNOLOGY
- 收录刊物：EI、SCIE
- 文献类型：J
- 卷号：120
- ISSN号：0030-3992
- 关键字：Mid-infrared sensor; Surface plasmon resonance; Chalcogenide glass
fiber; Refractive index sensor
- 摘要：A fiber-optic surface plasmon resonance (SPR) sensor working in the mid-infrared (mid-IR) region is present. Based on the chalcogenide glass (2S2G) fiber and a silicon-doped InAs film, this mid-IR SPR sensor can work in the wavelength region of 9-16 mu m theoretically. The dual-tapered fiber tip structure is employed to narrow absorption valley and increase the detection limit. Simulated results show that the proposed fiber-optic mid-IR SPR sensor can detect refractive index changes from 1.0 to 1.7. The sensitivity of the sensor are 1695 nm/RIU and 4470 nm/RIU for vapor and liquid phase detection, respectively.
