Abstract
An in-fiber Mach-Zehnder interferometer (MZI) for high-sensitive refractive index (RI) measurement is proposed and experimentally demonstrated. The sensing head is formed by a single-mode fiber (SMF) sandwiched between two short sections of thin-core fibers (TCFs), i.e., TCF-SMF-TCF MZI configuration with a length of 9 mm. A well-defined interference pattern is obtained as the result of fiber-core mismatch and core-cladding modes interference. The selected interference dip is extremely sensitive to ambient RI, providing a stable RI response with sensitivity up to 159 nm/RIU for water-based solutions close to the RI of 1.33, making it a good candidate for bio-chemical measurements.
| Original language | English |
|---|---|
| Article number | 6183456 |
| Pages (from-to) | 2501-2505 |
| Number of pages | 5 |
| Journal | IEEE Sensors Journal |
| Volume | 12 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2012 |
| Externally published | Yes |
Keywords
- Fiber optics
- fiber optics sensors
Fingerprint
Dive into the research topics of 'High-sensitive fiber-optic refractometer based on a core-diameter-mismatch mach-zehnder interferometer'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver