Enlarge-Tapered, Micro-Air Channeled Cavity for Refractive Index Sensing in SMF

被引：3
作者：
Dash, Jitendra Narayan [1 ]
Jha, Rajan [2 ]
Das, Ritwick [1 ]
机构：
[1] Homi Bhabha Natl Inst, Natl Inst Sci Educ & Res, Laser Opt & Nonlinear Photon Lab, Sch Phys Sci, Bhubaneswar 752050, Odisha, India
[2] Indian Inst Technol Bhubaneswar, Nanophoton & Plasmon Lab, Bhubaneswar 751003, Orissa, India
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2019年 / 37卷 / 21期
关键词：
Probes; Sensors; Interference; Laser beams; Sensitivity; Cavity resonators; Fabrication; Interferometer; micro air cavity; refractive index; sensing; MACH-ZEHNDER INTERFEROMETER; HIGH-RESOLUTION; TIP SENSOR; FIBER;
D O I：
10.1109/JLT.2019.2935083
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report a compact, highly sensitive all SMF refractive index (RI) sensor based on a waist enlarged tapered (WET) fiber probe with a micro-air cavity (MAC) located at the tip. The fabrication of WET probe has been accomplished using a commercial splicer machine and the MAC has been realized using ultrashort pulsed laser based micromachining. The WET fiber section facilitates excitation of cladding modes while the MAC in conjunction with the curved tip, provides a convenient platform for achieving core mode as well as cladding mode interference within the probe. The probe, with an optimized WET fiber section, exhibited maximum refractive index (RI) sensitivity of 123.7nmRIU with a negligible temperature sensitivity of 15.34 pmC.
引用
收藏
页码：5422 / 5427
页数：6
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