2. Spectral Stray Light
... measurements (Damm 2007) are illustrated in fig. 3. It can be seen that the spectral stray light can span 60 or more channels. The gap around channel 0 is due to the fact that only the out-of-band channels are shown (Damm 2007). While this method quantifies the stray light over “long ranges”, it is ...
... measurements (Damm 2007) are illustrated in fig. 3. It can be seen that the spectral stray light can span 60 or more channels. The gap around channel 0 is due to the fact that only the out-of-band channels are shown (Damm 2007). While this method quantifies the stray light over “long ranges”, it is ...
Lec03 - nptel
... as shown in figure 3.6. Consequently, at the output, skew rays will have minimum energy at the axis of the optical fiber and it will gradually increase towards the periphery of the core. Thus when light energy is launched into an optical fiber, there arises two possible energy distributions; one, wh ...
... as shown in figure 3.6. Consequently, at the output, skew rays will have minimum energy at the axis of the optical fiber and it will gradually increase towards the periphery of the core. Thus when light energy is launched into an optical fiber, there arises two possible energy distributions; one, wh ...
lab sheet - Faculty of Engineering
... In the atmosphere, diffracted light is actually bent around atmospheric particles -- most commonly, the atmospheric particles are tiny water droplets found in clouds. Diffracted light can produce fringes of light, dark or colored bands. An optical effect that results from the diffraction of light is ...
... In the atmosphere, diffracted light is actually bent around atmospheric particles -- most commonly, the atmospheric particles are tiny water droplets found in clouds. Diffracted light can produce fringes of light, dark or colored bands. An optical effect that results from the diffraction of light is ...
The Influence of Air-hole Filling Fraction of Photonics Crystal Fibers
... Setting PCF length L is 50 m. A 125 mW-power pump pulse with 1550 nm center wavelength and a full width at half maximum (FWHM) of 100 ns is injected in the fiber. Brillouin gain bandwidth is about 40 MHz, the gain coefficient is g0 = 5 × 10−11 m/W. Near the G = 14, the gain reaches saturation. The i ...
... Setting PCF length L is 50 m. A 125 mW-power pump pulse with 1550 nm center wavelength and a full width at half maximum (FWHM) of 100 ns is injected in the fiber. Brillouin gain bandwidth is about 40 MHz, the gain coefficient is g0 = 5 × 10−11 m/W. Near the G = 14, the gain reaches saturation. The i ...
Laser and its applications
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
... refractive index. Pure silica has a refractive index of 1.45 at 1 mm and B2O3 can be used to lower the refractive index, whilst other additives such as GeO2 raise it. Thus a typical fiber may consist of an SiO2 : GeO2 core with a pure Si0 cladding. Glass fibers can be made with a wide range of refra ...
An accurate technique to record the angular distribution of
... of the sample surface, mirrored with respect to the plane of the beamsplitter. Figure 2(b) shows the setup after rotation. The incoming beam is directed at C, so after rotation it still arrives at the center of the sample surface C’. With respect to the frame, the incoming direction has changed and ...
... of the sample surface, mirrored with respect to the plane of the beamsplitter. Figure 2(b) shows the setup after rotation. The incoming beam is directed at C, so after rotation it still arrives at the center of the sample surface C’. With respect to the frame, the incoming direction has changed and ...
Polarimetric imaging of crystals - Werner Kaminsky
... this is contained within several review articles2,40,44 but will not be addressed here in order to ground this work in recent history. The development of differential polarization imaging by Maestre, Tinoco, Bustamante and coworkers in the 1980s serves as an adequate introduction to the tools that w ...
... this is contained within several review articles2,40,44 but will not be addressed here in order to ground this work in recent history. The development of differential polarization imaging by Maestre, Tinoco, Bustamante and coworkers in the 1980s serves as an adequate introduction to the tools that w ...
Accurate predictive model for twisted nematic liquid crystal devices. Application
... 1.1 Spatial light modulators and diffractive optics This thesis mainly deals with two research topics: spatial light modulators and diffractive optics. The first one, spatial light modulators is by now a well established technology that generates a very important volume of business every year. It is ...
... 1.1 Spatial light modulators and diffractive optics This thesis mainly deals with two research topics: spatial light modulators and diffractive optics. The first one, spatial light modulators is by now a well established technology that generates a very important volume of business every year. It is ...
High luminance hybrid light guide plate for
... could control the light field well in one dimension. We could effectively make the rays be collimated without much energy loss. For the conventional backlight module [22], most rays do recycling between the two BEFs and the light-guide, so there is more energy loss coming from the absorption and th ...
... could control the light field well in one dimension. We could effectively make the rays be collimated without much energy loss. For the conventional backlight module [22], most rays do recycling between the two BEFs and the light-guide, so there is more energy loss coming from the absorption and th ...
Chapter 35
... largest m without making d larger than the separation on the right edge, and then add 1, because m begins with zero.) Small alternating concentric dark and bright rings can also be observed near the contact point of a spherical lens placed on top of a flat glass plate. One is again using the gap bet ...
... largest m without making d larger than the separation on the right edge, and then add 1, because m begins with zero.) Small alternating concentric dark and bright rings can also be observed near the contact point of a spherical lens placed on top of a flat glass plate. One is again using the gap bet ...
The Physics of the Optical Fibre
... bed. In fact, the link from the UK to the English Channel Islands is achieved directly without any submerged regenerators. The world's first international optical fibre submarine cable was laid by BT in 1986 between the UK and Belgium. It is 112Km in length and has only 3 regenerators. BT was a majo ...
... bed. In fact, the link from the UK to the English Channel Islands is achieved directly without any submerged regenerators. The world's first international optical fibre submarine cable was laid by BT in 1986 between the UK and Belgium. It is 112Km in length and has only 3 regenerators. BT was a majo ...
Photonics Workshop Program and Worksheets
... You should now see the laser beam reflecting off the top and bottom surfaces of the light guide in a zig~zag pattern. Change the angle between the laser beam and the end face of the acrylic bar. Notice how the laser beam continues to bounce up and down inside the light guide. Do you understand why t ...
... You should now see the laser beam reflecting off the top and bottom surfaces of the light guide in a zig~zag pattern. Change the angle between the laser beam and the end face of the acrylic bar. Notice how the laser beam continues to bounce up and down inside the light guide. Do you understand why t ...
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of the Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles creating colorful glowing skies at dusk and dawn. Scattering off of ice crystals and other particles in the atmosphere are responsible for halos, afterglows, coronas, rays of sunlight, and sun dogs. The variation in these kinds of phenomena is due to different particle sizes and geometries.Mirages are optical phenomena in which light rays are bent due to thermal variations in the refraction index of air, producing displaced or heavily distorted images of distant objects. Other optical phenomena associated with this include the Novaya Zemlya effect where the sun appears to rise earlier or set later than predicted with a distorted shape. A spectacular form of refraction occurs with a temperature inversion called the Fata Morgana where objects on the horizon or even beyond the horizon, such as islands, cliffs, ships or icebergs, appear elongated and elevated, like ""fairy tale castles"".Rainbows are the result of a combination of internal reflection and dispersive refraction of light in raindrops. Because rainbows are seen on the opposite side of the sky as the sun, rainbows are more prominent the closer the sun is to the horizon due to their greater distance apart.