搜索结果: 1-13 共查到“光学工程 Fiber Bragg gratings”相关记录13条 . 查询时间(0.106 秒)
Sensing With Slow Light in Fiber Bragg Gratings
Bragg gratings fi ber gratings optical fi ber sensors slow light
2012/8/7
On the edge of the bandgap in a fiber Bragg grating(FBG) narrow peaks of high transmission exist at frequencies where light interferes constructively in the forward direction.
Strong fiber Bragg gratings in Bi-Al co-doped H 2 -loaded optical fibers using CW-Ar + laser
Fiber Bragg gratings photosensitivity Lasers fiber
2011/5/22
Bragg gratings with reflectivity >93% were fabricated in Bi-Al co-doped H 2 -loaded optical fibers. Average index changes as high as +2.5×10 -3 were obtained. Positive core stress changes indicate a c...
Developments and Applications of Microstructured Fiber Bragg Gratings
Fiber optics components Fiber Bragg gratings Microstructured fibers
2011/5/22
Nowadays, fiber Bragg gratings (FBGs) indisputably represent one of the most powerful in-fiber tools for the development of effective sensing and communication devices.Within this fiber technology, th...
Intensity-Modulated Optical Fiber Sensors Based on Chirped-Fiber Bragg Gratings
Optical fiber sensors fiber Bragg gratings intensity-modulated sensors
2010/11/27
Intensity-modulated fiber Bragg grating (FBG) sensors, compared with normal wavelength-encoding FBG sensors, can reduce the cost of sensor system significantly by using cost-efficient optical power...
Temperature-insensitive 2-D tilt sensor by incorporating fiber Bragg gratings with a hybrid pendulum.
Fiber Bragg gratings (FBGs) Fiber-optic sensors Tilt measureme nt Temperature insensitive Hybrid pendu lum
2010/7/27
A novel two-dimensional (2-D) tilt sensor is demonstrated by incorporating only twofiber Bragg gratings (FBGs) with a hybrid pendulum transducer. The pendulum transducer is specially designed with hol...
Hybrid technique based on chirp effect and phase shifts for spectral Talbot effect in sampled fiber Bragg gratings (FBGs)
fiber Bragg gratings Talbot effect dispersion optical fiber communication
2010/7/15
To implement the spectral Talbot effect in sampled fiber Bragg gratings (SFBGs), a hybrid
technique based on a chirp effect and phase shifts is proposed. Firstly, the general phase condition
is deri...
Temperature-Insensitive 2-D Pendulum Clinometer Using Two Fiber Bragg Gratings
Clinometer fiber Bragg gratings (FBGs) fiber-optic sensors temperature-insensitive.
2010/6/27
A novel two-dimensional (2-D) clinometer has been demonstrated by attaching two fiber Bragg gratings (FBGs) on a deliberately designed pendulum composed of a tapered cylin-drical beam and a mass. Due ...
Fabrication of fiber Bragg gratings in 40 μ μm diameter low GeO 2 silica fiber using cw-Ar + -laser
Fiber Bragg gratings photosensitivity Fiber optics components
2010/6/4
Mean index changes >10 -3 were obtained in non-hydrogen-loaded ~3% GeO 2 -doped silica fibers with a 9/40 μm core/cladding diameter using a cw 244-nm-Ar + -laser. Core stress changes are positive indi...
Temperature-insensitive 2D tilt sensor with three fiber Bragg gratings.
fiber Bragg gratings fiber-optic sensors tilt measurement
2010/1/27
A two-dimensional (2D) tilt sensor based on three optical fiber Bragg gratings (FBGs) isproposed and demonstrated. Experimental results show that a high measurement sensitivity of 192 pm/◦ and r...
3.Free-spectral range tunable Fabry-Perot filter with superimposed fiber Bragg gratings
Fabry–Perot Free-spectral range Superimposed fiber Bragg grating
2009/9/24
A novel free-spectral range (FSR) tunable Fabry–Perot filter (FPF) with two superimposed fiber Bragg gratings (SFBGs) is proposed and experimentally demonstrated. The SFBGs, initially uniform in perio...
Fiber Bragg Gratings Made in Highly Nonlinear Bismuth Oxide Fibers Using IR Ultrafast Radiation
Fiber Bragg Gratings Made Highly Nonlinear Bismuth Oxide Fibers IR Ultrafast Radiation
2009/7/20
We have written for the first time high quality Bragg grating structures in highly nonlinear single mode bismuth oxide fibers . The grating inscription method is presented along with the annealing beh...
A Novel Tunable ROADM Concept Based on Tilted Fiber Bragg Gratings and MEMS Technology
ROADM Concept Tilted Fiber Bragg Gratings MEMS Technology
2008/8/4
A novel concept enabling ultra low-loss tunable ROADM is proposed and demonstrated. Wavelength selection is achieved using tilted fiber Bragg gratings in a MEMS controlled mirror cavity.
Package for fiber Bragg gratings (FBG) and a comparative study on their polarization mode dispersion (PMD) at varying temperature
optical fiber communication fiber Bragg grating negative thermal-expansion material
2005/2/26
A temperature-compensated material of fiber Bragg grating (FBG), which has negative thermal-expansion coefficient has been presented. The temperature coefficient of FBGs’ center wavelength is less tha...