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- Title
Improved Numerical Calculation of the Single-Mode-No-Core-Single-Mode Fiber Structure Using the Fields Far from Cutoff Approximation.
- Authors
Wei Xu; Jia Shi; Xianchao Yang; Degang Xu; Feng Rong; Junfa Zhao; Jianquan Yao
- Abstract
Multimode interferometers based on the single-mode-no-core-single-mode fiber (SNCS) structure have been widely investigated as functional devices and sensors. However, the theoretical support for the sensingmechanismis still imperfect, especially for the cladding refractive index response. In this paper, a modified model of no-core fiber (NCF) based on far from cut-off approximation is proposed to investigate the spectrum characteristic and sensing mechanism of the SNCS structure. Guided-mode propagation analysis (MPA) is used to analyze the self-image effect and spectrumresponse to the cladding refractive index and temperature. Verified by experiments, the performance of the SNCS structure can be estimated specifically and easily by the proposed method.
- Subjects
INTERFEROMETERS -- Design &; construction; NUMERICAL calculations; HYDROFLUORIC acid; PHOTONIC crystal fibers; MODE-coupling theory (Phase transformations)
- Publication
Sensors (14248220), 2017, Vol 17, Issue 10, p2240
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s17102240