Modulator device based on novel optical fiber with core on inner wall

ZHAO En-ming; ZHENG Yao; LIU Yan-xin; YUAN Li-bo; TONG Cheng-guo; YANG Xing-hua

doi:10.3788/OPE.20132104.0884

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Modulator device based on novel optical fiber with core on inner wall

更新时间：2020-08-12

- Modulator device based on novel optical fiber with core on inner wall
- Optics and Precision Engineering Vol. 21, Issue 4, Pages: 884-888(2013)
- 作者机构：
  
  哈尔滨工程大学理学院
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132104.0884
  CLC： TN253
- Received：17 October 2012，
  
  Revised：08 January 2013，
  
  Published Online：20 April 2013，
  
  Published：15 April 2013
- 稿件说明：
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赵恩铭郑瑶刘岩鑫苑立波佟成国杨兴华. 基于新型内壁芯光纤的调制器件[J]. 光学精密工程, 2013,21(4): 884-888

ZHAO En-ming ZHENG Yao LIU Yan-xin YUAN Li-bo TONG Cheng-guo YANG Xing-hua. Modulator device based on novel optical fiber with core on inner wall[J]. Editorial Office of Optics and Precision Engineering, 2013,21(4): 884-888
赵恩铭郑瑶刘岩鑫苑立波佟成国杨兴华. 基于新型内壁芯光纤的调制器件[J]. 光学精密工程, 2013,21(4): 884-888 DOI： 10.3788/OPE.20132104.0884.

ZHAO En-ming ZHENG Yao LIU Yan-xin YUAN Li-bo TONG Cheng-guo YANG Xing-hua. Modulator device based on novel optical fiber with core on inner wall[J]. Editorial Office of Optics and Precision Engineering, 2013,21(4): 884-888 DOI： 10.3788/OPE.20132104.0884.

摘要

提出一种基于中空内壁悬挂芯光纤构造而成的光纤集成调制器。该光纤具有孔道结构，纤芯悬挂于孔道内壁。合成了含有超顺磁性Fe

纳米颗粒的磁流体，通过将空心光纤与多模光纤熔融连接，将磁流体封装在空心光纤内部，作为悬挂纤芯的包层。磁流体通过倏逝场对光产生吸收作用

由外磁场控制吸收强度，实现对纤芯的光调制。波长为632.8 nm的光经过拉锥耦合点耦合进入、传出调制元件。实验结果表明，在不同磁场强度下，仅仅2.010

-2

L的磁流体就可以对系统光衰减产生明显影响。当磁场强度为38 914 A/m时，饱和调制深度为43％；系统的响应时间低于120 ms。该系统还可用于光开关，光纤滤波器和磁传感器等。

Abstract

A fiber integrated modulator is proposed based on a new kind of optical fiber with a fiber core on the inner wall. This optical fiber has a pore structure and its core is suspended on the inner wall of the pore. The magnetic fluid containing super paramagnetic Fe

nanoparticles is synthesized

then it is encapsulated in the hollow optical fiber through molten connecting with a multimode optical fiber and used as the cladding of the fiber core. By an evanescent field

the magnetic fluid generates absorption effect on the light and its intensity is controlled by an external magnetic field

so that the light modulation is implemented. Moreover

the light at a wavelength of 632.8 nm is coupled in and out of the modulating element by tapering the coupling point. The experimental results show that only 2.0 10

-2

L of the magnetic fluid in the system can significantly impact the optical attenuation under different magnetic field strengths. When the magnetic field strength is 38 914 A/m

the saturation modulation depth is 43 %

and the system response time is below 120 ms. The system can also be used in light switches

optical fiber filters and magnetic sensors.

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Keywords

references

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