ETM4106Tutorial3
... (d) Ans. (a) 16 dB, (b) 2.0 dB, (c) 29 dB Q.2 The numerical input/ output mean optical power ratio in 1 km length of fiber is found to be 2.5. Calculate the received mean optical power if 1 m W is launched into a fiber of 5 Km length (assuming no joints and connectors). Ans. 10.0 W. Q.3 A 15 Km li ...
... (d) Ans. (a) 16 dB, (b) 2.0 dB, (c) 29 dB Q.2 The numerical input/ output mean optical power ratio in 1 km length of fiber is found to be 2.5. Calculate the received mean optical power if 1 m W is launched into a fiber of 5 Km length (assuming no joints and connectors). Ans. 10.0 W. Q.3 A 15 Km li ...
F1 The ray approximation in optics assumes that light travels from
... The ray approximation in optics assumes that light travels from one point to another along a narrow path called a ray that may be represented by a directed line (i.e. a line with an arrow on it). In a uniform medium (where the refractive index is the same everywhere) the rays are straight lines, tho ...
... The ray approximation in optics assumes that light travels from one point to another along a narrow path called a ray that may be represented by a directed line (i.e. a line with an arrow on it). In a uniform medium (where the refractive index is the same everywhere) the rays are straight lines, tho ...
(k) and Refractive Index
... Light waves that are in phase with each other undergo constructive interference, and their amplitudes are additive. Light waves exactly out of phase with each other (by 180°) undergo destructive interference, and their amplitudes cancel. It is through the principle of optical interference that thin ...
... Light waves that are in phase with each other undergo constructive interference, and their amplitudes are additive. Light waves exactly out of phase with each other (by 180°) undergo destructive interference, and their amplitudes cancel. It is through the principle of optical interference that thin ...
Why The Sky Is Blue
... By now the alert reader may be thinking, “So why isn’t the sky violet, since that has a shorter wavelength than blue light?” The reasons depend on both external and internal factors; firstly, sunlight is not uniformly intense at all wavelengths (otherwise it would be pure white before entering the ...
... By now the alert reader may be thinking, “So why isn’t the sky violet, since that has a shorter wavelength than blue light?” The reasons depend on both external and internal factors; firstly, sunlight is not uniformly intense at all wavelengths (otherwise it would be pure white before entering the ...
Optics 101 for non-optical engineers
... Refraction = The bending of oblique incident rays as they pass from a medium having one refractive index into a medium with a different refractive index ...
... Refraction = The bending of oblique incident rays as they pass from a medium having one refractive index into a medium with a different refractive index ...
No Slide Title
... The fluorescence detector is based on the principle that some compounds fluoresce when bombarded with UV light. If the compound of interest fluoresces this is a very sensitive detector. The analyte is excited by light commonly at 253.7 nm from a low pressure mercury lamp. The light is absorbed and t ...
... The fluorescence detector is based on the principle that some compounds fluoresce when bombarded with UV light. If the compound of interest fluoresces this is a very sensitive detector. The analyte is excited by light commonly at 253.7 nm from a low pressure mercury lamp. The light is absorbed and t ...
1. Modern Optics: Introduction - University of Toronto Physics
... Prisms disperse white light into its various colors. ...
... Prisms disperse white light into its various colors. ...
COLORIMETRY AND SPECTROPHOTOMETRY
... Colorimetry is the use of the human eye to determine the concentration of coloured solution Spectrophotometry is the use of instruments to make the same measurements. It extends the range of possible measurements beyond those that can be determined by the eye alone. ...
... Colorimetry is the use of the human eye to determine the concentration of coloured solution Spectrophotometry is the use of instruments to make the same measurements. It extends the range of possible measurements beyond those that can be determined by the eye alone. ...
reflection and refraction
... different oscillation directions If light only oscillates in one direction, it is polarised Non-polarised light at the Brewster angle reflects polarised light: ...
... different oscillation directions If light only oscillates in one direction, it is polarised Non-polarised light at the Brewster angle reflects polarised light: ...
1 Introduction to Electromagnetic Waves 2 Speed of an
... where Imax is the maximum intensity of the light transmitted (at φ = 0) and I is the amount transmitted at angle φ. This is known as Malus’s Law. plane of incidence: the plane containing the incident and reflected rays and the normal to the surface. ~ is perpendicular to the plane of incidence (and ...
... where Imax is the maximum intensity of the light transmitted (at φ = 0) and I is the amount transmitted at angle φ. This is known as Malus’s Law. plane of incidence: the plane containing the incident and reflected rays and the normal to the surface. ~ is perpendicular to the plane of incidence (and ...
Chapter 23 notes
... where Imax is the maximum intensity of the light transmitted (at φ = 0) and I is the amount transmitted at angle φ. This is known as Malus’s Law. plane of incidence: the plane containing the incident and reflected rays and the normal to the surface. ~ is perpendicular to the plane of incidence (and ...
... where Imax is the maximum intensity of the light transmitted (at φ = 0) and I is the amount transmitted at angle φ. This is known as Malus’s Law. plane of incidence: the plane containing the incident and reflected rays and the normal to the surface. ~ is perpendicular to the plane of incidence (and ...
Invisibility Cup - Purdue Engineering
... is that metals absorb light more strongly than microwaves, because they have a much greater electrical resistance at visible light frequencies. Cai et al.2 get round this problem by designing their wires to have as little resistance as possible. The wires resemble the structures they applied in thei ...
... is that metals absorb light more strongly than microwaves, because they have a much greater electrical resistance at visible light frequencies. Cai et al.2 get round this problem by designing their wires to have as little resistance as possible. The wires resemble the structures they applied in thei ...
light reflection plane mirror
... light is represented as straight lines called rays ray diagrams are drawings that show the path that light takes after it leaves its source light travels in straight lines until it strikes something some materials absorb light and other materials reflect light Regular Reflection light rays ...
... light is represented as straight lines called rays ray diagrams are drawings that show the path that light takes after it leaves its source light travels in straight lines until it strikes something some materials absorb light and other materials reflect light Regular Reflection light rays ...
Full-Spectrum, Angle-Resolved Reflectance and
... in both the optics and glass industries. For instance, stacks of alternating high- and lowrefractive-index layers are used to form Bragg mirrors in laser cavities, and magnesium fluoride layers are used as antireflection coatings on display screens. In the last two decades, however, the range of ava ...
... in both the optics and glass industries. For instance, stacks of alternating high- and lowrefractive-index layers are used to form Bragg mirrors in laser cavities, and magnesium fluoride layers are used as antireflection coatings on display screens. In the last two decades, however, the range of ava ...
Light Waves
... a.It bends light inward and can create either a virtual or a real image. b.It bends light inward and can only create a real image. c.It bends light outward and can create either a virtual or a real image. d.It bends light outward and can only create a virtual image. ...
... a.It bends light inward and can create either a virtual or a real image. b.It bends light inward and can only create a real image. c.It bends light outward and can create either a virtual or a real image. d.It bends light outward and can only create a virtual image. ...
Physics 476LW Advanced Physics Laboratory Polarization
... reflectance, R (=r2) versus θ and compare this with the Fresnel equation for reflected light for s-polarized light. You will now repeat these measurements for p-polarized light. To make p-polarized light, rotate the polarizer so that it is at ~ 45o. Place the second polarizer immediately after the ...
... reflectance, R (=r2) versus θ and compare this with the Fresnel equation for reflected light for s-polarized light. You will now repeat these measurements for p-polarized light. To make p-polarized light, rotate the polarizer so that it is at ~ 45o. Place the second polarizer immediately after the ...
Optical Fiber communication
... used in Fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication. Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. ...
... used in Fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication. Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. ...
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.