Abstract
A high sensitivity refractive index (RI) sensor based on balloon-like singlemode-tapered multimode-singlemode (STMS) fiber structure is proposed. The configuration is formed by bending the tapered multimode fiber (MMF) like a balloon shape, which is sandwiched between two singlemode fibers (SMFs). Taking the advantage of tapering and bending, the sensitivity is dramatically improved. The maximum sensitivity of 6909 nm/RIU at RI = 1.42 is experimentally achieved. The proposed refractometer is promising and attractive in chemical and biological applications for its superior properties, such as high sensitivity, compact size, easy fabrication, and low cost.
| Original language | English |
|---|---|
| Pages (from-to) | 42-47 |
| Number of pages | 6 |
| Journal | Sensors and Actuators A: Physical |
| Volume | 281 |
| DOIs | |
| State | Published - 1 Oct 2018 |
Keywords
- Balloon-like structure
- Fiber optics refractometer
- Singlemode-tapered multimode-singlemode fiber
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