3&times;3光纤耦合器解调方法

张晓峻; 康崇; 孙晶华

doi:10.3788/fgxb20133405.0665

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3×3光纤耦合器解调方法

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 3×3光纤耦合器解调方法
- Demodulation Method Based on The 3×3 Optical Fiber Coupler
- 发光学报 2013年34卷第5期页码：665-671
- 作者机构：
  
  哈尔滨工程大学理学院,黑龙江哈尔滨,150001
- 作者简介：
- 基金信息：
  
  国家自然科学基金(61174192)资助项目()
- DOI：10.3788/fgxb20133405.0665
  中图分类号： TN929.11
- 收稿日期：2013-01-13，
  
  修回日期：2013-04-02，
  
  纸质出版日期：2013-05-10
- 稿件说明：
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张晓峻, 康崇, 孙晶华. 3×3光纤耦合器解调方法[J]. 发光学报, 2013,34(5): 665-671

ZHANG Xiao-jun, KANG Chong, SUN Jing-hua. Demodulation Method Based on The 3×3 Optical Fiber Coupler[J]. Chinese Journal of Luminescence, 2013,34(5): 665-671
张晓峻, 康崇, 孙晶华. 3×3光纤耦合器解调方法[J]. 发光学报, 2013,34(5): 665-671 DOI： 10.3788/fgxb20133405.0665.

ZHANG Xiao-jun, KANG Chong, SUN Jing-hua. Demodulation Method Based on The 3×3 Optical Fiber Coupler[J]. Chinese Journal of Luminescence, 2013,34(5): 665-671 DOI： 10.3788/fgxb20133405.0665.

摘要

介绍了33光纤耦合器输出解调方法的原理

推导出了33光纤耦合器输出解调信号的数学表达式

给出了33光纤耦合器输出解调算法的解调频率范围

分析了外界干扰信号、耦合器的不对称性、以及信号中存在高次谐波对解调结果的影响。分析结果表明:该方法有比较宽的频率解调范围

能够克服温度变化等外界因素的干扰

能够消除33耦合器3个输出端存的偏差对解调结果的影响以及在信号中存在高次谐波的影响。该方法具有性能稳定、不需要载波、不需要稳定的工作点以及抗干扰能力强等优点

具有较强的实用性和可行性

对解调电路的数字化设计具有理论指导意义。

Abstract

The principle of 33 fiber coupler output demodulation is introduced

and its mathematical expression is derived. The demodulation frequency range of its algorithm is exploited. The effects from interference signals

asymmetry of coupler and higher harmonic on demodulation result are analyzed. The results show that this method has a wide range of frequency demodulation

and can avoid the interference of outside factors such as temperature

and eliminate the effects which are from deviation of three output sides of 33 coupler on demodulation and higher harmonic. It has advantages of stable performance

carrier and stable working point not needed

and strong anti-jamming capability

etc.

So it has well practicability

feasibility and theoretical guidance meaning for digital demodulation circuit design.

关键词

Keywords

references

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采用3×3耦合器的分布反馈式光纤激光传感器解调技术

3×3光纤耦合器解调方法

Demodulation Method Based on The 3×3 Optical Fiber Coupler

DOI：10.3788/fgxb20133405.0665

摘要

Abstract

关键词

Keywords

references