Evanescent Field
Preparation of Tapered Optical Fibers to utilize the Evanescent Field for Sensing Applications
... VI FUTURE WORK AND CONCLUSION The tapered fibers with different taper waist sizes around 28 m are achieved and their transmission spectra is characterized for the evanescent field coupling. Observation of ...
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Oriented Collagen and Applications of Waveguide Evanescent Field Scattering (WEFS) Microscopy
... Over the past few years, different versions of waveguide total internal reflection microscopy systems have been reported. Imaging a fixed fibroblast cell on a waveguide interface by utilizing the evanescent ...
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Angular dependence of Evanescent Field Enhancement on a glass air interface
... Figure 7 shows the results for measurements with p-polarised incident light. As can be seen there is a major disagreement with the theory. Several possible causes for this were considered, such as the possible influence ...
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Development and application of evanescent wave cavity ring down spectroscopy for studies of electrochemical and interfacial processes
... an evanescent field is established with the amplitude decaying exponentially with distance from the ...The evanescent field can be exploited to investigate the absorbance properties of the ...
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An investigation of phase mask diffraction patterns and fibre Bragg gratings with scanning near field optical microscopy
... unlocked evanescent field imaging in a vertical plane, in order to extract decay constants from columns of ...electric field, as light could no longer be guided through the ...electric field ...
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Probing the guided modes of a 2D photonic crystal slab using attenuated total reflectance
... This thesis marks the end of my student life, which for me really means the end of an era. I’ve experienced a lot of ups and a few downs, and I’d like to thank a number of people for the role they played in the ups. ...
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An Evanescent Perspective on Cells
... As was seen earlier, confinement of the evanescent field depends significantly on the difference between the index of refraction of the coverslip and that of the specimen. The importance of these ...
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Effect of physisorption and chemisorption of water on resonant modes of rolled up tubular microcavities
... nanomembranes on photoresist sacrificial layers. The in- fluence of surface composition (e.g., coating formed by atomic layer deposition (ALD) and water molecules absorbed from atmosphere) on the mode (including the ...
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Silicon Photonic Biosensors Using Label-Free Detection
... In evanescent field sensors, sensitivity is determined by the strength of interactions between matter and the fraction of light in solution or at the surface ...
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Modeling and characterization of an electrowetting based single mode fiber variable optical attenuator
... the evanescent field of the guided mode, while the EWOD platform electrically controls the stepwise translation of a liquid droplet along the variable-thickness, polished cladding of the ...the ...
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Evanescent Fields inside a Cut off Waveguide as Near Fields
... stance L, it is the probability of photons propagating the distance of L that decays with L. Therefore, though a wavepacket inside a barrier contains an exponentially decay factor such as exp( r ) , it is not implies ...
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Palladium Ultra Thin Layer Profiles Evaluation by Evanescent Light
... The Pd stripe thin films profiles on the glass surface were observed directly by an optical microscope [1-4], obtain- ing characteristic parameters of the evanescent field via the DELI phemenological model ...
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A Discrete Model of the Evanescent Light Emission from Ultra Thin Layers
... of evanescent experiments [10]-[16] including the current work for extremely thin layers of Pd in the range 1 - 10 nm show that such layers located in the evanescent field zone contribute to a ...
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Experimental investigation of the reflection of thermal sodium atoms from a moving evanescent grating
... the evanescent field intensity to increase ...the evanescent field intensity is thus limited by the laser power available in the ...an evanescent grating is dependent upon the atomic ...
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A Detailed Study of a Dielectric Waveguide Structure for an Enhanced Evanescent Wave Atom Mirror
... The multiple reflected wave components interfere with each other. The interference will be constructive if the phase change during traveling across the waveguide plus those due to reflectance from both boundaries of the ...
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Fiber Optics Evanescent Wave Sensor
... Sensors, Evanescent Wave, Evanescent wave for Sensing Application, Evanescent Absorption Coefficient, sensitivity of evanescent sensor, Simplest Evanescent Field Absorption ...
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A review of single-mode fiber optofluidics
... the evanescent field permeating radially from the entire surface of the fiber taper together with an increased penetration of this field into the surrounding environment due to the narrow diameter of ...
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Evanescent wave assist features for optical projection lithography
... of evanescent waves ...a field traveling in the straight waveguide to the ring ...and evanescent field to near-field images of a transmitting ...
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Critique of optical negative refraction superlensing
... enhanced field at the silver film – air ...the evanescent field intensity at the rear ...this field intensity enhancement we show in ...the field intensity across the silver film ...
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Propagative and Evanescent Waves Diffracted by Periodic Surfaces: Perturbation Method
... In the case of a surface with groove depth small compared to its period we have written the propagation equation in a translation coordinate system and we have associated operators to the different coefficients of the ...
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