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Study on Micro-nano Fiber Coupled Ring Mirror and Its Spectral Controllability
- Study on Optical Communications Issue 1, (2025)
- 作者机构：
1.铁正检测科技有限公司，济南 250014
2.山东科技大学 电子信息工程学院，山东 青岛 266590
3.青岛诺克通信技术有限公司，山东 青岛 266499
- 作者简介：
- 基金信息：
DOI：10.13756/j.gtxyj.2025.230161
CLC： TN303Published：10 February 2025，
Received：30 October 2023，
Revised：23 November 2023，
- 稿件说明：
移动端阅览
郭传臣，杨敏，崔倩倩，等. 微纳光纤耦合环镜及其光谱调控特性研究[J]. 光通信研究，2025(1): 230161.
Guo C C, Yang M, Cui Q Q, et al. Study on Micro-nano Fiber Coupled Ring Mirror and Its Spectral Controllability[J]. Study on Optical Communications, 2025(1): 230161.
郭传臣，杨敏，崔倩倩，等. 微纳光纤耦合环镜及其光谱调控特性研究[J]. 光通信研究，2025(1): 230161. DOI： 10.13756/j.gtxyj.2025.230161.
Guo C C, Yang M, Cui Q Q, et al. Study on Micro-nano Fiber Coupled Ring Mirror and Its Spectral Controllability[J]. Study on Optical Communications, 2025(1): 230161. DOI： 10.13756/j.gtxyj.2025.230161.
摘要
【目的】
2
在微纳光纤耦合器的基础上，文章提出了一种微纳光纤耦合环镜结构，对其光谱与环镜内光偏振态、锥区微纳光纤长度以及周围介质折射率之间的关系开展了理论仿真与实验研究。
【方法】
2
理论上，分析了微纳光纤耦合器的基本原理，仿真了弱耦合和强耦合情况下的微纳光纤耦合器光场分布特性以及微纳光纤环镜的光谱偏振可调控特性。实验验证了光谱偏振可调控特性、自由光谱范围调控特性以及波长调控特性。
【结果】
2
结果显示，当圆环形偏振控制器的1/2波片角度在－90～90°调谐过程中，干涉光谱的周期和峰值波长保持不变，消光比随波片角度的改变呈现规律性变化且在波片偏转45°时达到最小，90°时达到最大；随着腰锥长度的增加，微纳光纤耦合器环镜梳状谱的通道间隔和自由光谱范围逐渐减小；周围折射率在1.332 0～1.335 5范围内变化，波长随折射率的增大而发生红移，灵敏度可达18 350 nm/RIU。
【结论】
2
可见，通过对微纳光纤耦合器内部耦合的光偏振态、微纳锥区长度和耦合器结构周围介质折射率等的调控，可以实现相应输出光谱的改变，这为构建新型全光纤器件提供了一种新的途径，其不仅可以作为激光器中的波长选择和调控元件应用于激光器，优化激光输出特性，还可应用于生物医学等传感领域来实现液体成分的高精度检测等。
Abstract
【Objective】
2
Based on the micro-nano fiber coupler
this paper proposes a micro-nano fiber coupled ring mirror structure. Theoretical simulations and experimental studies are conducted to investigate the relationship between its spectrum and the polarization state of light within the ring mirror
the length of the micro-nano fiber in the tapered region
and the refractive index of the surrounding medium.
【Methods】
2
Theoretically
the basic principle of micro-nano fiber coupler is analyzed
and the optical field distribution of micro-nano fiber coupling and the spectral polarization of micro-nano fiber ring mirror are simulated. Experimentally
the spectral controllability is verified.
【Results】
2
The results show that when the half-wave plate angle of the circular polarization controller is adjusted at －90～90°
the period and the peak wavelength remains constant. The extinction ratio changes regularly with the angle and reaches the minimum at 45°
as well as the maximum at 90°. As the length of the waist cone increases
the channel interval and the free spectral range of the ring mirror comb spectrum presents gradually decrease. As the surrounding refractive index varies in the range of 1.332 0 to 1.335 5
the output interference wavelength is red-shift with 18 350 nm / RIU sensitivity.
【Conclusion】
2
In summary
by adjusting the polarization state of the coupled light inside the micro-nano fiber coupler
the length of the micro-nano tapered region
and the refractive index surrounding the coupler structure
corresponding changes in the output spectrum can be achieved. This provides a new approach for constructing novel all-fiber devices. These devices can not only be used as wavelength selection and regulation components in lasers to optimize laser output characteristics
but also applied in sensing fields such as biomedicine for high-precision detection of liquid components.
关键词
Keywords
references
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