Spatial-Division Multiplexed Mach–Zehnder Interferometers in Heterogeneous Multicore Fiber for Multiparameter Measurement
We propose and demonstrate a novel spatial-division multiplexed Mach–Zehnder interferometer (MZI) structure in heterogeneous multicore fiber (MCF) for simultaneous measurement of temperature and strain. The MZI structure is constituted of dual-tapered regions along heterogeneous MCF by us...
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7377003/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | We propose and demonstrate a novel spatial-division multiplexed Mach–Zehnder interferometer (MZI) structure in heterogeneous multicore fiber (MCF) for simultaneous measurement of temperature and strain. The MZI structure is constituted of dual-tapered regions along heterogeneous MCF by using electrical arc discharge. Different spatial channels (cores) in heterogeneous MCF have dissimilar responses to the outer environment. With our in-house developed low-loss fan-in/fan-out devices, we experimentally achieved the temperature sensitivity of 47.37 pm/°C for the central core and 53.20 pm/°C for the outer core and strain sensitivity of 1.10 <inline-formula> <tex-math notation="LaTeX">$\text{pm}/\mu\varepsilon$</tex-math></inline-formula> for the central core and 0.84 <inline-formula> <tex-math notation="LaTeX">$\text{pm}/\mu\varepsilon$</tex-math></inline-formula> for the outer core. Using the temperature–strain joint matrix, the cross sensitivity is eliminated, and the relative measurement error is less than 5%. The spatial-division multiplexed interferometric sensors embedded in the telecommunication-grade MCF show great potential for multiparameter sensing. |
|---|---|
| ISSN: | 1943-0655 |