Ray Model
... 1. A light ray is launched in a plane containing the axis of the fiber. We can then see the light ray after total internal reflection travels in the same plane i.e., the ray is confined to the plane in which it was launched and never leave the plane. In this situation the rays will always cross the ...
... 1. A light ray is launched in a plane containing the axis of the fiber. We can then see the light ray after total internal reflection travels in the same plane i.e., the ray is confined to the plane in which it was launched and never leave the plane. In this situation the rays will always cross the ...
Biochemical sensors based on polymer microrings with sharp
... We performed the experiment to detect the concentration of glucose in an aqueous solution by using a fabricated PS microring resonator. We measured the change in the spectra of the device near one of its resonances ( 0 ⫽1568.97 nm) when it was immersed in glucose solutions of different concentratio ...
... We performed the experiment to detect the concentration of glucose in an aqueous solution by using a fabricated PS microring resonator. We measured the change in the spectra of the device near one of its resonances ( 0 ⫽1568.97 nm) when it was immersed in glucose solutions of different concentratio ...
Introduction - BYU Physics and Astronomy
... of 13.4 nm light at 5° from normal incidence. However, these mirrors suffer from reflectance losses due to oxidation.2 Ruthenium is one material that has been suggested for use as a capping layer to prevent the oxidation of Mo/Si mirrors. 2 Ru is a likely candidate since it is the nearest neighbor o ...
... of 13.4 nm light at 5° from normal incidence. However, these mirrors suffer from reflectance losses due to oxidation.2 Ruthenium is one material that has been suggested for use as a capping layer to prevent the oxidation of Mo/Si mirrors. 2 Ru is a likely candidate since it is the nearest neighbor o ...
A Michelson interferometric technique for measuring refractive index
... that is circles are produced for a fixed value of 111 and d since 0 remains constant (see Fig. 2). So if both the optical path lengths are the same or if these two paths differ by an integral number of wavelengths A ,the condition for constructive interference is met. Thus, bright fringes will be fo ...
... that is circles are produced for a fixed value of 111 and d since 0 remains constant (see Fig. 2). So if both the optical path lengths are the same or if these two paths differ by an integral number of wavelengths A ,the condition for constructive interference is met. Thus, bright fringes will be fo ...
Electromagnetic Radiation (EMR) and Remote Sensing
... Spectral Signature Every natural and artificial object reflects and emits EMR over a range of wavelengths in its own chemical composition and physical state. The distinctive reflectance and emission properties of objects are called spectral signature. Within some limited wavelength region, a partic ...
... Spectral Signature Every natural and artificial object reflects and emits EMR over a range of wavelengths in its own chemical composition and physical state. The distinctive reflectance and emission properties of objects are called spectral signature. Within some limited wavelength region, a partic ...
1 PHYS:1200 LECTURE 31 — LIGHT AND OPTICS (3) In lecture 30
... plane and curved mirrors. In this lecture we will use the law of refraction to describe how images are formed by lenses – curved pieces of glass or transparent plastic. The law of refraction allows us to determine how a light ray is bent when it travels from air into glass or clear plastic. We wil ...
... plane and curved mirrors. In this lecture we will use the law of refraction to describe how images are formed by lenses – curved pieces of glass or transparent plastic. The law of refraction allows us to determine how a light ray is bent when it travels from air into glass or clear plastic. We wil ...
Optical Properties of Lithium - Zinc – Boro- MolybdateGlass
... The importance of glass in optical applications cannot be over emphasized, particularly as a host for optically active ions. Several applications of optical processes are known, such as inter-ionic electronic transitions, inter-ionic transitions or excitations which takes place within the electronic ...
... The importance of glass in optical applications cannot be over emphasized, particularly as a host for optically active ions. Several applications of optical processes are known, such as inter-ionic electronic transitions, inter-ionic transitions or excitations which takes place within the electronic ...
Detailed Study Of AlAs-Oxidized Apertures in VCSEL Cavities for
... model, based on the vectorial solution of Maxwell’s equations, that is able to handle diffraction effects and that can calculate threshold material gain directly. Our approach also differs from that of [13] and [14] in the sense that we enclose the structure under study in a metallic cylinder and us ...
... model, based on the vectorial solution of Maxwell’s equations, that is able to handle diffraction effects and that can calculate threshold material gain directly. Our approach also differs from that of [13] and [14] in the sense that we enclose the structure under study in a metallic cylinder and us ...
To determine the wavelength of a monochromatic source of light
... The optical bench consists of two metal rails graduated accurately in millimeters. The bench is provided with the three metal uprights which can slide along the rails and their positions can be read accurately by scale attached to each of them. The uprights can also be given transverse displacement ...
... The optical bench consists of two metal rails graduated accurately in millimeters. The bench is provided with the three metal uprights which can slide along the rails and their positions can be read accurately by scale attached to each of them. The uprights can also be given transverse displacement ...
About Optical Fiber - University of Vaasa
... Snew’s Law - Total Internal Reflection Snew’s Law describe the relation between the angles of ...
... Snew’s Law - Total Internal Reflection Snew’s Law describe the relation between the angles of ...
FTS Fourier Transform Spectroscopy 2015S Interim Manual
... Equation 13, which gives IR(δ) will have a constant part and a varying part. The constant part could be determined by measuring IR(0) when the path difference is zero or by measuring IR(∞) which is the constant level to which the signal tends when the path difference becomes very large (see Bell p.4 ...
... Equation 13, which gives IR(δ) will have a constant part and a varying part. The constant part could be determined by measuring IR(0) when the path difference is zero or by measuring IR(∞) which is the constant level to which the signal tends when the path difference becomes very large (see Bell p.4 ...
Chapter 17 A modern optics laboratory for undergraduate students
... course covers advanced topics in optics and photonics for scientists (i.e. laser cooling, superluminal information, light-gravity interaction) and engineers (i.e. fiber optics, storage of information in a bulk of matter, transparency of dielectrics). The primary goal of this laboratory course is to ...
... course covers advanced topics in optics and photonics for scientists (i.e. laser cooling, superluminal information, light-gravity interaction) and engineers (i.e. fiber optics, storage of information in a bulk of matter, transparency of dielectrics). The primary goal of this laboratory course is to ...
Mie theory for light scattering by a spherical
... A computer program has been developed based on the theory presented in Sections 2– 4. A suggestion of Bohren and Huffman5 has been followed to obtain a numerically stable scheme for calculating an, bn, cn, and dn. For the case of a nonabsorbing medium the results from the new program are the same as ...
... A computer program has been developed based on the theory presented in Sections 2– 4. A suggestion of Bohren and Huffman5 has been followed to obtain a numerically stable scheme for calculating an, bn, cn, and dn. For the case of a nonabsorbing medium the results from the new program are the same as ...
Tomographic Interference Microscopy of Living Cells
... lenses. 3, beam splitter. 4, 8, front focal planes of objectives. 5, 9, objectives. 6, sample. 7, mirror; 10, mirror on PZT (piezoelectric transducer). 12, input plane (CCD camera). uation of the projection data. Angular probing in tomography can be realized in two ways: angular scanning of the prob ...
... lenses. 3, beam splitter. 4, 8, front focal planes of objectives. 5, 9, objectives. 6, sample. 7, mirror; 10, mirror on PZT (piezoelectric transducer). 12, input plane (CCD camera). uation of the projection data. Angular probing in tomography can be realized in two ways: angular scanning of the prob ...
Research Article Influence of Thickness on the Holographic Parameters of H-PDLC Materials
... recording. The diffraction behavior looks very similar. At best we can say that the gratings with low values of thickness exhibit slightly better energetic sensitivity. It is important to note that we defined this parameter as the exposure required to achieve the maximum value of DE, or in other wor ...
... recording. The diffraction behavior looks very similar. At best we can say that the gratings with low values of thickness exhibit slightly better energetic sensitivity. It is important to note that we defined this parameter as the exposure required to achieve the maximum value of DE, or in other wor ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.