Cable television monitoring system based on fiber laser and FBG sensor

2015 ◽  
Author(s):  
Peng-Chun Peng ◽  
Jun-Han Huang ◽  
Shin-Shian Wu ◽  
Wei-Yuan Yang ◽  
Po-Tso Shen
Keyword(s):  
Fiber Laser ◽  
Monitoring System ◽  
Cable Television ◽  
Fbg Sensor ◽  
Television Monitoring

scholarly journals On multi-sensor monitoring of fiber laser fusion cutting

2021 ◽  
Vol 1135 (1) ◽  
pp. 012014
Author(s):  
Nikita Levichev ◽  
Joost R. Duflou
Keyword(s):  
Fiber Laser ◽  
Monitoring System ◽  
Laser Cutting ◽  
High Speed ◽  
Process Zone ◽  
Industrial Process ◽  
Industrial Applications ◽  
Laser Fusion ◽  
Thick Plates ◽  
Sensor Monitoring

Abstract Laser cutting is a well-established industrial process for sheet metal applications. However, cutting thick plates is still accompanied by problems because of the characteristic limited process parameter window. Since cutting by means of fiber lasers has become dominant, tailored solutions are required in such systems for industrial applications. The development of a robust real-time monitoring system, which adapts the process parameters according to a specific quality requirement, implies a significant step forward towards automated laser cutting and increases the process robustness and performance. In this work, a coaxial multi-sensor monitoring system is tested for fiber laser cutting of stainless steel thick plates. A high-speed camera and a photodiode sensor have been selected for this investigation. Experiments at different cutting speeds, representing primary cut quality cases, have been conducted and various features of the obtained process zone signals have been examined. Finally, the feasibility of industrial application of the developed setup for high-power fiber laser cutting is discussed, followed by several implementation recommendations.

Development of damage monitoring system for aircraft structure using a PZT actuator/FBG sensor hybrid system

2004 ◽  
Vol 2004.10 (0) ◽  
pp. 53-54
Author(s):  
Toshimichi Ogisu ◽  
Yoshihiro Saitou ◽  
Masakazu Shimanuki ◽  
Satoshi Kiyoshima ◽  
Yoji Okabe ◽  
...  
Keyword(s):  
Monitoring System ◽  
Hybrid System ◽  
Aircraft Structure ◽  
Pzt Actuator ◽  
Fbg Sensor ◽  
Damage Monitoring

Multiwavelength fiber laser for the fiber link monitoring system

2013 ◽  
Vol 51 ◽  
pp. 62-66 ◽  
Author(s):  
Peng-Chun Peng ◽  
Wei-Yun Lee ◽  
Shin-Shian Wu ◽  
Hsuan-Lun Hu
Keyword(s):  
Fiber Laser ◽  
Monitoring System ◽  
Multiwavelength Fiber Laser ◽  
Fiber Link

Development of damage monitoring system for aircraft structure using a PZT actuator/FBG sensor hybrid system

2004 ◽  
Author(s):  
Toshimichi Ogisu ◽  
Masakazu Shimanuki ◽  
Satoshi Kiyoshima ◽  
Yoji Okabe ◽  
Nobuo Takeda
Keyword(s):  
Monitoring System ◽  
Hybrid System ◽  
Aircraft Structure ◽  
Pzt Actuator ◽  
Fbg Sensor ◽  
Damage Monitoring

scholarly journals Wide and Fast Wavelength-Swept Fiber Laser Based on Dispersion Tuning for Dynamic Sensing

2009 ◽  
Vol 2009 ◽  
pp. 1-12 ◽  
Author(s):  
Shinji Yamashita ◽  
Yuichi Nakazaki ◽  
Ryosei Konishi ◽  
Osamu Kusakari
Keyword(s):  
Fiber Laser ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Laser Cavity ◽  
Sweep Rate ◽  
Fiber Amplifiers ◽  
Fiber Sensing ◽  
Fbg Sensor ◽  
Erbium Doped ◽  
Very High

We have developed a unique wide and fast wavelength-swept fiber laser for dynamic and accurate fiber sensing. The wavelength tuning is based on the dispersion tuning technique, which simply modulates the loss/gain in the dispersive laser cavity. By using wideband semiconductor optical amplifiers (SOAs), the sweep range could be as wide as∼180 nm. Since the cavity contains no mechanical components, such as tunable filters, we could achieve very high sweep rate, as high as∼200 kHz. We have realized the swept lasers at three wavelength bands, 1550 nm, 1300 nm, and 800 nm, using SOAs along with erbium-doped fiber amplifiers (EDFAs), and in two laser configurations, ring and linear ones. We also succeeded in applying the swept laser for a dynamic fiber-Bragg grating (FBG) sensor system. In this paper, we review our researches on the wide and fast wavelength-swept fiber lasers.

Study on the clay weakening characteristics in deep unconsolidated layer using the multi-point monitoring system of FBG sensor arrays

2021 ◽  
Vol 61 ◽  
pp. 102432
Author(s):  
Yi-Wei Ren ◽  
Qiang Yuan ◽  
Jing Chai ◽  
Yong-Liang Liu ◽  
Ding-Ding Zhang ◽  
...  
Keyword(s):  
Monitoring System ◽  
Sensor Arrays ◽  
Fbg Sensor
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