研究目的
Demonstrating an in-fiber axial micro-strain sensing head combined with a Mach-Zehnder interferometer based on the concentric multilayer elliptical-core fiber.
研究成果
An axial micro-strain sensing head combined with a tiny in-fiber MZI based on distinct dual-mode CMECFs has been demonstrated. It achieves stable interference, high extinction ratio (~15 dB), and experimental sensitivity of ~1.78 pm/με in the range of 0 με to 1250 με, with intensity fluctuations below 0.38 dB. The sensor has potential applications in remote sensing systems.
研究不足
The stretch region in simulation is not consistent with the experiment, leading to deviations. The axial strain exerted on the sensing head is not uniform due to imperfect fiber clamps. The effect of multi-variable cases (e.g., temperature) is ignored.
1：Experimental Design and Method Selection:
The experiment involves designing an in-fiber MZI using a CSC (CMECF-SMF-CMECF) structure. The theoretical basis includes MZI sensor theory, resonance demodulation technology, and finite element method (FEM) for mode analysis.
2：Sample Selection and Data Sources:
The sensing head is fabricated using CMECF and SMF-28 fiber. Measurements are taken at room temperature with controlled axial micro-strain.
3：List of Experimental Equipment and Materials:
CMECF, SMF-28 fiber, fiber fusion splicer (Fujikura FSM-100M/P), broadband light source (KOHERAS superK uersa), spectrometer (YOKOGAWA AQ6375), optical spectrum analyzer (OSA), fiber clamps, micro-adjuster.
4：Experimental Procedures and Operational Workflow:
The CSC structure is fabricated by splicing CMECF and SMF segments. The sensing head is fastened and elongated stepwise using a micro-adjuster. Transmission spectra are recorded as strain is varied.
5：Data Analysis Methods:
Data analysis includes monitoring wavelength shifts, linear fitting of strain vs. wavelength, and using FFT for spatial frequency analysis.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
optical fiber analyzer
NR9200
EXFO
Measuring the refractive index distribution of the CMECF.
暂无现货
预约到货通知
-
fiber fusion splicer
FSM-100M/P
Fujikura
Splicing the CMECF and SMF segments to construct the CSC structure.
暂无现货
预约到货通知
-
broadband light source
superK uersa
KOHERAS
Providing injection light for the sensing system.
暂无现货
预约到货通知
-
spectrometer
AQ6375
YOKOGAWA
Detecting the transmission spectrum of the sensing head.
立即获取同款设备 -
single mode fiber
SMF-28
Corning
Used as the central arm in the CSC structure and for input/output connections.
暂无现货
预约到货通知
-
concentric multilayer elliptical-core fiber
CMECF
Acts as mode generator and coupler in the MZI sensing head, supporting dual-mode operation.
暂无现货
预约到货通知
-
登录查看剩余4件设备及参数对照表
查看全部
