fbg

The sensor is constituted by a metal probe and a FBG attached to the center of it's elastic film.

Both EFPI and FBG sensors could be embedded in FOSL and used for monitoring strain and temperature simultaneously.

At present, Fiber Bragg Grating(FBG) is one of the most potential and typical optical passive components.

Nowadays the manufacturing and application research on FBG has gone into a popular field of the fiber optics technology.

By strain sensing experiment, wo got a linear relation expression between the pressure and the central wavelength drift of FBG .

Fiber Bragg Grating (FBG) is one of the most potential and typical optical passive components.

The shape of the film changes under hydraulic pressure and causes the FBG to stretch; as a consequence the centre wavelength of FBG shifts.

FBG temperature compensation experiment certified the feasibility of the method of reference FBG temperature compensation.

A new general prefabricated strain sensor called FBG strain gauge is designed, which can be used as a quadratic transform component.

With displacement sensor experiment, we discover that the accuracy of the FBG sensor is much higher than the resistance strain sensor.

finish the dynamic load test and compare the precision of the FBG Weight-in-Motion system with another existing Weight-in-Motion system.

FBG sensing is one of the important fiber optic sensors.

The stress sensing of the FBG is affected by the embedding method and the characteristics of the interlayer and the matrix.

FWHM. Figure 6 demonstrates both the variation of center wavelength and FWHM of the sensing FBG against the changing hydraulic pressure.

Key Products : Fiber Bragg Grating-line temperature monitoring system, FBG sensor demodulation devices and sensors.

FBG is fabricated directly in the core of the fiber . The grating is small in length, and it has a determined center wavelength.

Compared with other fiber sensors, those sensors based on FBG have their unique merits, and are more widely used in practice.

The experimental results show, that the model is feasible to forecast the transversal stress sensing of embedded FBG.

The experimental result and the application showed that the FBG sensors were working properly and the proposed method was valid.

A novel dual-wavelength fiber Bragg grating(FBG) fabricated by using photosensitivity is experimentally demonstrated.

The results show that the design of The FBG Distributed pressure sensor system is feasible.

After strain transfer conversion, high precision rock deformation test will be achieved by FBG with equivalent accuracy with MTS.

So FBG sensing technology will have widely applicable perspective in vehicle weighing system.

Fiber Bragg Grating is a kind of fiber optic device which is expected to be of great prospect of application in fiber communication.

A high sensitive fiber Bragg grating (FBG) strain sensor with automatic temperature compensation is demonstrated.

But it's difficult to demodulate the light signal and encapsulate the FBG when the dynamic strain inside the concrete is measured.

When the measured strain changes, the stick does not change in length, but the FBG does.

Study a FBG senor system which is accuracy, low cost, stability is of great significance.

The structural large strain monitoring strategy was proposed to ensure the test reliability of FBG.

The theory model of fiber Bragg grating external cavity semiconductor lasers (FBG-ECL) is studied.

A novel fiber Bragg grating (FBG) pressure sensor with the enhanced sensitivity has been demonstrated.

The comparison of frequency spectrum between PZT and FBG in the focused point is taken experimentally.

We present and experiment a new system to interrogate the wavelength shift of fiber Bragg gratings (FBG).

When the temperature changes, the stick changes in length to pull the FBG to realize temperature compensation.

The laser threshold decreases with increasing the reflectivity of output FBG.

Now the FBG sensors in operation mostly make use of its sensing characteristics of axial stress and strain.

Deep research on the fiber grating chromatic dispersion compensator's every aspect, such as the FBG fabrication, encapsulation, measurement.

Rock deformation process can be tested by using the fiber Bragg grating (FBG) surface pasting method.

Figure 5 demonstrates the evolution of the FBG spectra under different hydraulic pressure.

Finally we demonstrated a low-cost FBG sensing system for coal mine security monitoring.

A process for plating metal on fiber Bragg grating (FBG) to protect the fiber grating is put forward.

The result shows that the temperature character of POF Bragg grating is negative, which is opposite to the silica optical FBG.

Methods The fasting blood glucose(FBG) and fibrinogen of 80 cases with acute cerebral infarction were examined.

Rock uniaxial compression experiment on MTS was conducted, and the loading course was tested by using FBG.

FBG sensing technology has become the optical fiber sensing technology in the most vigorous a technology.

Based on a discrete grating model the time-domain transfer matrix and scattering matrix arc deduced.

Feasibility of a fiber ring laser based on FBG based FP filters is studied.

And then the basic design line of FBG composite sensor was summed up.

The main problem which blocks the utility of FBG is how to measure the wavelength shift accurately in Real-time.

Based on the principle of fiber Bragg grating sensor (FBG), the application of FBG in civil engineering is illustrated.

This thesis first studied the characters of FBG strain sensor.

F-P tunable filter demodulation system is choosed by FBG landslide monitoring system.

A new type of in-place inclinometer based on fiber Bragg grating(FBG) sensing technology and the related analysis method are presented.

As a new sensor, pressure sensor based on fiber Bragg grating(FBG) is developed rapidly.

The transverse effect of the fiber Bragg grating(FBG)is analyzed and measured based on the experiment.

Finally, the way of calibration on FBG sensor and some notice was briefly introduced.

A new method of using FBG sensor for detection of pipelines is proposed.

The converted axial strain of FBG accords with MTS displacement gauge with the relative error 3. 2%.

Developed a novel highroad axle identification system based on FBG sensing.

This paper study the principium of FBG load cell.

A novel pressure sensor based on FBG elastic metal film is proposed in this paper.

In FBG sensors technology, it is very important to choose the light source.

Furthmore, EFPI and FBG sensors embedded inside FOSL are performed by using the four-point bending test.

Objective To study the correlation of blood lipid, fasting blood glucose(FBG)and blood uric acid (UA)with incidence of primary hypertension.

Nonlinearly Chirped FBG Used for Compensating the Chromatic Dispersion

An analysis and study of the correlation of temperature and strain of FBG-type fiber sensor

Application Study of FBG Sensing Technology in Bridge Monitoring

Application and research of the multi-parameters simultaneous measurement system in FBG sensors

Characteristic of the FBG External Cavity Semiconductor Laser with Weak Feedback

Strain and Temperature Sensing Characteristics of FBG Packaged by the Titanium Alloy Slice

Study on Encapsulating Technique and Strain Sensing Characteristic of FBG Temperature Sensor

Optimization of Electron-beam-written Step-chirped Phase Masks to Improve Quality of the Chirped FBG

Theoretical and experimental studies on the strain and temperature sensing performance of optical FBG

Study on Optical Power Fluctuation Measurement in FBG Center Wavelength Detecting with Tunable Laser

Study on Aluminum Groove Encapsulating Technique and Sensing Characteristics of FBG Sensor

Application Study of FBG Sensors in Bridge Monitoring

Multichannel demodulation method for FBG temperature sensing

Monitoring of cure strain on the interface between filament wound composites and aluminum plate using FBG

The originality innovation of this article is that we designed a novel experiment system for FBG pressure sensing on C-shaped elastic tube;

Influence of Coupling Agent's Self-Assembly Upon Performance of Polymer Coated FBG Pressure Sensors

An Experiment of Simultaneous Displacement and Temperature Sensing with FBG

Application of FBG Sensing Technology on Inspection of Large-span Bridge Construction

Low-cost high-resolution wavelength demodulator for multi-channel dynamic FBG sensing

Loading effects'FBG monitoring system and safety evaluation of arch bridge suspenders

Pressure and Temperature Sensitivities of FBG Written in Side-hole Fiber with Elliptical Core

Study on FBG Sensing Technology in Bridge Reinforcing Monitoring and Evaluation

Experimental Study on the Application of FBG for Concrete Structure Monitoring

A FBG Sensor Demodulation Method Based on an Amplified Spontaneous Emission Light Source

Improved Algorithm of Wavelength Tuning of FBG by a Freely Supported Beam

Application of FBG filter in submarine optical communication system

Application of FBG filter in submarine optical communication system

Application of FBG sensing technology in structure monitoring

Study of New Type of Automatic Automotive Load Detecting Method Based on FBG

Bridge Structure for FBG Temperature Compensation

Application Research on Surface FBG Sensor in Structure Experiment

Effect of Stress Birefringence on Characteristics of FBG Pressure Sensing

The Designing of Ultra-narrow Bandwidth FBG Filters in Optical Receiving System

Research on stress transferring rules for surfaced FBG sensors on concrete

Vibration measuring system using FBG modulated by blazed grating

Experimental study on models of artificial roller compacted concrete dam by using FBG sensor

Study on the Application of FBG Sensing Technology in Built Bridge Monitoring

Study of FBG Fiber Grating Thin Film Sensors

Study on Application of FBG Sensing Technology for Dam Safety Monitoring

Study on smart FBG sensors and their applications in civil engineering

Study on Application of FBG Sensing Technology in Anchor Monitoring

Monitoring in the Construction of Continuous Beam Turned from Sample Beam on FBG

FBG sensors for on-line temperature measurements of ground-source heat pump

The design of optical interleaver based sampled FBG for all - optical network

Experimental Research of the FBG Stress Sensor

Study on Composite FBG Sensor Prepared by Pre-exposure Technology

FBG Intelligent Monitoring System of the Super Major Bridge on the Wei Canal

Demodulation Technique of FBG Multiplexed Sensing Based on Long Signal Fast Correlative Algorithm

Experiment Study on Monitor of Concrete Shrink in the Cure Period with FBG Sensor

FBG Used in Health Monitor of Timberwork

Distributed Acceleration Measurement System Based on Optical Wavelet Filtering and FBG

Using FBG sensing network monitor the local strain of rectangle flat

Application of FBG sensors in under-water structure project

Application of FBG Sensors in the Structural Test of Tunnel Segments

A Dual-wavelength FBG Based on Photosensitivity and Its Application

The Effect of Refractive Index of Material Overlaid Side Polished Area of FBG on Bragg Wavelength

The multiplexing and demodulation of FBG sensors

Study on Fiber Bragg Grating Pressure Sensor of High Sensitivity Based on Chemical Bonding between Polymer and FBG

Single frequency fiber ring laser with mode selection by FBG F-P etalon

Theoretical and Preliminary Experimental Study for Measuring the Moisture of Wet Steam Based on FBG

Study on Fiber Methane Sensing System Using FBG Filters

The Design and Realization of Spoke FBG Pressure Sensor

Application and Research of Load Cell Based FBG Sensors

Application of VI technology in FBG sensing system

Detecting Techniques of FBG Sensors

A Method for Reconstruction FBG Based on a Simulated Annealing Algorithm

Preliminary Study on Weigh-in-Motion Using Dual-Axis FBG

FBG Wavelength Demodulation Based on Tunable Narrowband Laser

Experimental study on strain effect of chirped FBG

Study on FBG Strain Sensor and Demodulation

Research on All-Fiber FBG SensorBased on Long-Period Fiber Grating Filter

Design and Realization of Temperature and Relative Humidity Sensor Based on FBG

The Prospect of Applying FBG Sensor in Micrometrology

A FBG Pressure Sensor Based on Bourdon and Cantilever Beam of Uniform Strength

Mouse Fibrinogen, Fbg ELISA Kit

FBG Wavelength Demodulation Based on Tunable Er-doped Fiber Ring Laser

FBG sensing array based on chirped grating demodulation

A demodulation technology based on AOTF for FBG sensing system

Study on FBG demodulation technique based on edge filter