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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
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Improved Numerical Calculation of the Single-Mode-No-Core-Single-Mode Fiber Structure Using the Fields Far from
Wei Xu1,2,3, Jia Shi4,5, Xianchao Yang6,7
1Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China. xuwei@tjpu.edu.cn.
Sensors (Basel, Switzerland)
|September 30, 2017
Summary
This study introduces a refined model for single-mode-no-core-single-mode fiber structures, improving theoretical understanding of their sensing mechanisms. The new model accurately predicts performance for cladding refractive index and temperature sensing applications.
Area of Science:
- Optoelectronics and Photonics
- Fiber Optic Sensing
Background:
- Single-mode-no-core-single-mode fiber (SNCS) structures are utilized as functional devices and sensors.
- Existing theoretical models have limitations in explaining the sensing mechanisms, particularly concerning cladding refractive index response.
Purpose of the Study:
- To propose a modified theoretical model for no-core fiber (NCF) structures.
- To investigate the spectral characteristics and sensing mechanisms of SNCS structures.
- To enhance the understanding of cladding refractive index and temperature responses in SNCS devices.
Main Methods:
- Development of a modified no-core fiber (NCF) model using the far from cut-off approximation.
- Application of Guided-mode Propagation Analysis (MPA) to study the self-image effect.
- Analysis of spectral responses to variations in cladding refractive index and temperature.
Main Results:
- The proposed model provides a theoretical basis for understanding SNCS spectral characteristics.
- The model accurately analyzes the self-image effect and spectral responses.
- Experimental verification confirms the model's effectiveness in estimating SNCS performance.
Conclusions:
- The modified NCF model offers a specific and accessible method for evaluating SNCS structures.
- This research improves the theoretical foundation for SNCS-based sensors.
- The findings facilitate easier and more accurate performance estimation of SNCS devices.
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