搜索结果: 1-15 共查到“光学工程 strain”相关记录19条 . 查询时间(0.062 秒)
Slow-Light Fiber-Bragg-Grating Strain Sensor With a 280- Resolution
Fiber Bragg gratings fi ber optics sensors
2015/8/7
We report a fiber strain sensor based on a single fiber Bragg grating (FBG) with a minimum detectable strain of 280 in the 20-kHz range. This breakthrough was made possible by operating th...
Highly sensitive fiber loop ringdown strain sensor using photonic crystal fiber interferometer
Highly sensitive fiber loop ringdown strain sensor photonic crystal fiber interferometer
2013/5/27
A highly sensitive strain sensor is demonstrated by introducing a photonic crystal fiber (PCF) Mach–Zehnder interferometer (MZI) in a cavity ringdown fiber loop as a sensing element. The MZI is fabric...
Long-Range Distributed Strain and Temperature Sensing with 40-cm Spatial Resolution Based on DPP-BOTDA Employing Optical Pre-Amplification and Simplex Coding
Fiber optics sensors Stimulated scattering
2015/5/25
Sub-meter resolution sensing has been achieved employing linear pre-amplification with Simplex-coded pulses employing DPP-BOTDA. Results demonstrate a spatial resolution of ~40 cm over 56km sensing fi...
Simultaneous measurement of strain and temperature with a long-period fiber grating inscribed Sagnac interferometer
Sagnac interferometer Strain and temperature measurements Polarization maintains fiber Long-period fiber grating
2013/5/27
A Sagnac interferome ter with a long-per iod fiber grating (LPG) inscribed in the polarization-maintainin g fi ber (PMF) is proposed and experime ntally demonstrated for simultaneous measurement of st...
Strain Sensor Realized by Using Low-Birefringence Photonic-Crystal-Fiber-Based Sagnac Loop
Fiber Sagnac loop optical fiber sensor photonic crystal fiber (PCF) strain sensor
2013/5/27
An optical fiber strain sensor by using a low-birefrin-gence photonic crystal fiber (PCF)-based Sagnac loop is demon-strated. A fiber Sagnac loop is formed by the low-birefringence PCF of about 40 cm,...
Measurement of dynamic strain using an optic fibre system in adaptive composite laminates with an integrated piezoelectric sensor/actuator
smart composite materials health monitoring Fabry–Pérot interferometer piezoelectric
2011/5/5
This study seeks the development of adaptive composites capable to monitor and actively damp
vibrations. In the proposed material, vibrations measurements are performed by an embedded
low finesse op...
Intensity measurement based temperature-independent strain sensor using a highly birefringent photonic crystal fiber loop mirror.
Highly birefringent photonic crystal fiber (HiBi-PCF) Fiber loop mirror (FLM) Strain senor Intensity measurement
2013/5/27
A fi ber-optic strain sensor is demons trated by using a short length of highly birefringent phot onic crystal fi ber (HiBi-PCF) as the sensing element inserted in a fi ber loop mirror (FLM). Due to t...
Temperature-insensitive accelerometer based on a strain-chirped FBG
Accelerometers Fiber Bragg gratings Temperature-insensitive measurement
2013/5/27
A novel accelerometer based on a strain-chirped optical fiber Bragg grating (FBG) is proposed. The FBG is glued in a slanted direction onto the lateral side of a right-angled triangle cantilever beam ...
Enhanced long-range distributed strain and temperature sensing using BOTDA and optical pulse coding
Enhanced long-range distributed strain temperature sensing BOTDA optical pulse coding
2015/7/20
Optical pulse coding is successfully applied to long-range sensors based on Brillouin optical time domain analysis, achieving a record of 1 meter spatial resolution over 50 km of SMF with 2.2°C / 44 μ...
Fabry-Perot Lasers in Simultaneous Strain and Temperature Brillouin-based Distributed Sensing
Fabry-Perot Lasers Simultaneous Strain Temperature Brillouin-based Distributed Sensing
2015/7/15
The use of Fabry-Perot lasers is proposed for simultaneous strain and temperature sensing based on spontaneous Brillouin scattering. A significant sensing performance enhancement is achieved compared ...
Reflectometric Measurement of Strain Induced Optical Activity Coefficient in Single-Mode Randomly Birefringent Twisted Fibers
Reflectometric Measurement Strain Induced Optical Activity Coefficient Single-Mode Randomly Birefringent Twisted Fibers
2015/7/15
A novel technique based on polarization-sensitive frequency-domain reflectometry, for non-invasive measurement of optical activity coefficient, in randomly birefringent twisted fibers, is presented. T...
Simultaneous strain and temperature measurement using a highly birefringence fiber loop mirror and a long period grating written in a photonic crystal fiber
Long-period grating Fiber loop mirror Photonic crystal fiber Optical fiber sensor
2013/5/24
We present a new design for simultaneous strain and temperature measurement using a high-birefrin-gence fiber loop mirror (HiBi-FLM) concatenated with a temperature-insensitive long-period grating(LPG...
Fiber-Optic Brillouin Distributed Discrimination of Strain and Temperature with 11-cm Spatial Resolution Using Correlation-Based Continuous-Wave Technique
Fiber-Optic Brillouin Distributed Discrimination Temperature Spatial Resolution Continuous-Wave Technique
2015/8/3
11-cm spatial-resolution distributed discrimination of strain and temperature is realized by measuring the Brillouin frequency shift and the birefringence from monitoring the dynamic grating spectrum ...
Improvement of FWM Conversion Efficiency by SBS-suppressed Highly Nonlinear Dispersion-Decreasing Fiber with a Strain Distribution
FWM Conversion Efficiency SBS-suppressed Nonlinear Dispersion-Decreasing Fiber
2015/7/31
We demonstrated 8dB SBS-suppression and a uniform dispersion simultaneously by down-sized dispersion-decreasing HNLF applying distributed strain. FWM wavelength conversion efficiency of -2dB was achie...
Fiber Bragg grating and long period grating sensor for simultaneous measurement and discrimination of strain and temperature effects
fiber Bragg grating long period grating
2011/5/6
Fiber Bragg grating sensors are novel in the determination of various physical parameters. In the case of fiber Bragg grating, on a single measurement of wavelength shift, it is impossible to differen...