A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO<sub>2</sub> Laser Pluses

WANG Yi-ping; RAO Yun-jiang

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A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO₂ Laser Pluses

更新时间：2025-07-16

- A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO₂ Laser Pluses
- Acta Electronica Sinica Vol. 32, Issue 8, Pages: 1322-1325(2004)
- 作者机构：
  
  1. 上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海,200030
  2. 重庆大学光电工程学院,重庆,400030
  3. 上海交通大学区域光纤通信网与新型光通信系统国家重点实验室上海,200030
  4. 重庆大学光电工程学院重庆,400030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN253
- Published：2004
- 稿件说明：
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WANG Yi-ping, RAO Yun-jiang. A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO₂ Laser Pluses[J]. Acta Electronica Sinica, 2004, 32(8): 1322-1325.
DOI：

WANG Yi-ping, RAO Yun-jiang. A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO₂ Laser Pluses[J]. Acta Electronica Sinica, 2004, 32(8): 1322-1325. DOI：

摘要

在国际上首次提出了高频CO

激光脉冲写入长周期光纤光栅的方法.该方法与低频CO

激光脉冲写入法或紫外光等其它写入法相比具有许多独特的优点——效率高、成本低

重复曝光容易、激光加热区域的周期性变化通过扫描振镜的偏振来实现而光纤固定不动

因此特别适合于研制具有特殊用途的新型LPFG.详细分析了单侧CO

激光入射导致LPFG横截面折射率分布不均匀的形成机理并提出了降低LPFG双折射的方法.

Abstract

A technique fabricating long period fiber gratings (LPFGs) by high-frequency CO

laser pulses is proposed and demonstrated

for the first time

to our knowledge.In comparison with other fabrication techniques of LPFG

such as using low-frequency CO

laser and UV laser

such a technique has many unique advantages

including high efficiency

low cost

low insert loss

and repetitive exposal being easy.Exposing area of the fiber is transferred periodically by means of the scan lens turning.Then

it is especially propitious to developing novel LPFGs using the fabrication technique.It is analyzed that the single side incident CO

laser resulted in an asymmetric refractive-index distribution

within the cross-section of the LPFG.

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A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO2 Laser Pluses

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摘要

Abstract

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A Technique Fabricating Long Period Fiber Gratings by High-Frequency CO₂ Laser Pluses