搜索结果: 1-15 共查到“工学 Grating”相关记录75条 . 查询时间(0.078 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...
Improving the Quality of Liquid-Crystal Projection Image by Multilevel Diffractive Grating Technique
liquid-crystal projection system multilevel diffractive grating VLSI process plastic molding pixel depixelization
2011/11/30
A technique using multilevel diffractive gratings to suppress the discrete nature of liquid crystal display (LCD) projection images is demonstrated. The multilevel diffractive gratings, having a cross...
Temperature-Independent Fiber Bending Sensor Based on a Superimposed Grating
Bending measurement fiber-optic sensor super-imposed grating tilted fiber Bragg grating (TFBG)
2013/5/27
A compact fiber bending sensor has been presented by superimposing a uniform fiber Bragg grating (FBG) into a tilted fiber Bragg grating (TFBG). The reflection of FBG is modulated by the same bandwidt...
Power-referenced optical fiber refractometer based on a hybrid fiber grating
Fiber Bragg gratings (FBG s) power referenced refractometer tilted- fi ber Bragg gratings (TFBGs)
2013/5/27
An in-fi ber structure for power-referenced re-fractometry based on a hybrid fi ber grating is proposed and demonstrated experimentally. The hybridfi ber grating is formed by superimposing a shortfi b...
Binary Phase Micro-Grating and Polarization Beam Splitter for Free-Space Micro Optical Pickups
2011/11/24
A pop-up binary-phase micrograting and a pop-up micro polarization beamsplitter, for potential use in micro-optical pickups, have been realized on a single silicon chip using a two-layer polysilicon a...
Optimization of Duty Ratio of Metallic Grating Arrays for Infrared Photodetectors
Metallic Gratings, Duty Ratio, Infrared Waveband, QWIP
2013/1/30
Influence of duty ratio of metallic gratings applied in quantum well infrared photodetector (QWIP) with detection ranging from 3 μm to 5 μm was studied in this paper. The influence on longer enhanced ...
A sensor head cons is t in g of a photonic cr ystalfiber ( PCF)-b ased Mac h –Zehnderinterferometer(MZI) anda fiber Bragg grating (F BG) i s proposed and experimentally demo nstrated for simultaneous ...
Temperature dependence of surface phonon polaritons from a quartz grating
Temperature dependence surface phonon polaritons quartz grating
2015/8/10
We report the temperature dependence of the surface phonon polariton (SPhP) spectra of a-SiO2(quartz), propagated to the far-field by a grating, in the temperature range between 300 K and 800 K....
Polyvinyl alcohol–coated hybrid fiber grating for relative humidity sensing
fiber Bragg grating tilted-fiber Bragg grating humidity sensing polyvinyl alcohol
2013/5/27
A relative humidity (RH) sensor based on a hybrid fiber grating coated with polyvinyl alcohol is proposed and demonstrated experimentally. The hybrid fiber grating is formed by superimposing a normal ...
A fiber loop mirror temperature sensor demodulation technique using a long-period grating in a photonic crystal fiber and a band-pass filter
fiber loop mirror temperature sensor demodulation technique a long-period grating in a photonic crystal fiber a band-pass filter
2013/5/27
A fiber loop mirror (FLM) temperature sensor using a long-period grating (LPG) written in a photonic crystal fiber (PCF) and a band-pass filter as a demodulator is proposed. By utilizing the stable fi...
Novel temperature-insensitive fiber Bragg grating sensor for displacement measurement
Displacement Fiber Bragg grating Sensor
2013/5/27
A novel temperature-insensitive displacement sensor based on a fiber Bragg grating (FBG) is presented. A FBG is glued onto the surface of a specially designed cantil...
Compact refractometer based on extrinsic-phase-shift fiber Bragg grating
Refractometer Extrinsic-phase-shift Fiber Bragg grating Compact sensing structure Large measurement range
2013/5/27
A novel method to measure refractive index of liquids by using an extrinsic-phase-shift fiber Bragg grating(EPS-FBG) is proposed and experimentally demonstrated. The EPS-FBG is obtained by separating ...
CWDM Planar Concave Grating Multiplexer/Demultiplexer and Application in ROADM
CWDM Planar Concave Grating Multiplexer/Demultiplexer ROADM
2015/5/15
We report a SOI based 1×4 coarse wavelength-division-multiplexer (CWDM) planar concave grating multiplexer/demultiplexer and applications in re-configuration optical add/drop multiplexer (ROADM) syste...
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...
Design and Development of an Apparatus for Grating and Peeling Fruits and Vegetables
Apparatus Grating and Peeling Fruits and Vegetables
2010/11/8
Fruit grater and peeler are needed in the processing of fruits in order to reduce the time required for fruits grating and peeling. Grating is important especially to make salad and for decoration pur...