基于带有螺旋相位微盘的四芯光纤的集成法布里-珀罗干涉仪的数值分析

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2024-10-03 DOI:10.1109/JPHOT.2024.3474422

Yuhan Geng;Shengnan Wu;Sailing He

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引用次数: 0

摘要

本文提出了基于四芯光纤（FCF）和螺旋相位调制微盘（HPMD）结构的集成法布里-珀罗（FP）干涉仪结构。HPMD 的设计目的是在 FCF 端面的相邻纤芯之间产生 π/2 相位差。HPMD 和另一个垂直于光纤的反射镜形成了四个外 FP 腔。推导出正交相位解调理论，并可通过 FCF 的反射强度直接计算 FP 腔的长度。分析了四个纤芯之间的串扰效应。此外，仿真结果还表明，该结构对温度波动具有很强的抗干扰能力，相位差与温度的敏感度仅为 0.009°/K。相位解调结果表明，相位盘厚度为 765 nm 时，解调效果较好，平均相对误差为 0.58%。此外，还分析了 FCF 的加工误差对解调结果的影响。当对准误差达到 100 μm 时，相位解调相对误差为 0.65%。

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Numerical Analysis of Integrated Fabry–Perot Interferometers Based on Four Core Fiber With a Helical Phase Microdisk

The integrated Fabry-Perot (FP) interferometers structure based on four core fiber (FCF) and a helical phase-modulation microdisk (HPMD) structure is proposed. The HPMD is designed to generate π/2 phase difference between adjacent fiber cores at the end face of the FCF. Four extrinsic FP cavities are formed by the HPMD and another reflected mirror perpendicular to the fiber. The quadrature phase demodulation theory is derived and the FP cavities length can be directly calculated by the reflected intensity of the FCF. The crosstalk effect between the four cores is analyzed. In addition, the simulation results also show that the structure has strong anti-interference ability to temperature fluctuations, the sensitivity of phase difference and temperature is only 0.009 °/K. The results of phase demodulation show that the demodulation effect is better when the thickness of the phase disk is 765 nm, and the mean relative error is 0.58%. The influence of machining error of FCF on demodulation results is also analyzed. The phase demodulation relative error is 0.65% when the alignment mismatch is reach 100 μm.

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.