Fiber laser sensing based on mechanically-induced long-period gratings

基于机械感应长周期光栅的光纤激光传感

• 批准号: 21560040
• 负责人: SAKATA Hajime
• 金额: $ 3万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560040/
• 关键词: 光ファイバ; レーザ工学; 応用光学

Pressure-induced long-period fiber gratings(LPFGs) were formed in fibers by three methods, i. e., mechanical pressure, UV-curable adhesive, and magnetic force. Although the LPFG is known as a band-rejection filter, the bandpass filter response was obtained by cladding-to-core modes conversion. By introducing the LPFG into the rare-earth. doped fiber laser resonator, tunable operation of the fiber lasers was attained. By using the change of the laser output power and the wavelength according to the circumstance of LPFG, simultaneous sensing of temperature and pressure was obtained from the laser output characteristics.

采用三种方法在光纤中形成了压力感生长周期光纤光栅（LPFGs）。即，机械压力、UV固化粘合剂和磁力。虽然LPFG被称为带阻滤波器，但带通滤波器响应是通过包层到芯模转换获得的。将长周期光纤光栅引入稀土中。掺杂光纤激光器谐振腔，实现了光纤激光器的可调谐运转。利用激光输出功率和波长随长周期光纤光栅工作环境的变化，从激光输出特性出发，实现了温度和压力的同时传感。

项目成果

Temperature dependent transmittance of cascaded long-period fiber gratings for sensor applications

用于传感器应用的级联长周期光纤光栅的温度相关透射率

• 发表时间: 2009
• 期刊: Microwave and Optical Technology Letters
• 影响因子: 1.5
• 作者: H. Sakata;K. Honda
• 通讯作者: K. Honda

接着固定マイクロベンドLPFGによるファイババンドパスフィルタの作製

使用粘合剂固定微弯长周期光栅制造光纤带通滤波器

• 发表时间: 2010
• 作者: K.Nishio;H.Sakata;斉藤拓也,坂田肇
• 通讯作者: 斉藤拓也,坂田肇

Tunable operation of Tm-doped fiber ring laser controlled by microbend induced fiber grating

微弯诱导光纤光栅控制掺铥光纤环形激光器的可调谐运行

• 发表时间: 2011
• 作者: H. Sakata;M. Ichikawa;S. Araki;H. Nakagami
• 通讯作者: H. Nakagami

圧力印加長周期グレーティングによる1.9μm帯Tmファイバリングレーザのチューナブル化検討

1.9 μm波段Tm光纤环形激光器压力长周期光栅可调谐性研究

• 发表时间: 2010
• 作者: 市川万理恵;仲上宏之;坂田肇
• 通讯作者: 坂田肇

Transmission band pass filters based on force-induced fiber gratings for sensor and tunable laser applications

用于传感器和可调谐激光应用的基于力感光纤光栅的传输带通滤波器

• 发表时间: 2010
• 作者: H. Sakata;T. Saito;K. Nishio
• 通讯作者: K. Nishio