Optics in Astronomy
... Concepts of coherence III • Coherence is a property of the e.m. field vector! • It is important to consider the state of polarisation of the light as orthogonal states of polarisation do not interfere (laws of Fresnel-Arago). • Optical designs of interferometers which change the state of polarisait ...
... Concepts of coherence III • Coherence is a property of the e.m. field vector! • It is important to consider the state of polarisation of the light as orthogonal states of polarisation do not interfere (laws of Fresnel-Arago). • Optical designs of interferometers which change the state of polarisait ...
Optical field profile evaluation on silica high Optical field profile
... from FFP are appared the difference in vicinity of boundary of core and clad of silicon waveguide (x = ±1.0µm). The optical field of NFP, resulting from the conversion of FFP correspond closely with the optical field of NFP simulated using FEM. The difference arises due to the approximation used in ...
... from FFP are appared the difference in vicinity of boundary of core and clad of silicon waveguide (x = ±1.0µm). The optical field of NFP, resulting from the conversion of FFP correspond closely with the optical field of NFP simulated using FEM. The difference arises due to the approximation used in ...
Fiber Optics
... where a and no are the radius and refractive index at the center of the core, respectively. In the case of a parabolic index fiber (α = 2) the total power that can be launched is one half of that of a step-index fiber with the same ∆ (NA). Graded-index fibers are found in most applications for telec ...
... where a and no are the radius and refractive index at the center of the core, respectively. In the case of a parabolic index fiber (α = 2) the total power that can be launched is one half of that of a step-index fiber with the same ∆ (NA). Graded-index fibers are found in most applications for telec ...
Three-Dimensional Simulation of Vertical-Cavity Surface
... wavelength control and narrow optical linewidth. Although VCSELs might improve on some aspects, there is little pressure on this low-volume market to drive the development of cheaper optical sources. However, long wavelength single-mode VCSELs could be more promising than the recent Fabry-Perot lase ...
... wavelength control and narrow optical linewidth. Although VCSELs might improve on some aspects, there is little pressure on this low-volume market to drive the development of cheaper optical sources. However, long wavelength single-mode VCSELs could be more promising than the recent Fabry-Perot lase ...
Simulation of Fiber Fuse Phenomenon in Single
... Ge-doped silica core at 2,293 K was assumed to be 5.6 ×104 m−1 at 0.5 µm [5]. This large α value, however, could not be estimated using their Arrhenius equation [6]. As the focal length F of thermal lense effect is inversely as the α value [63], large α value of 5.6 ×104 m−1 is necessary to obtain s ...
... Ge-doped silica core at 2,293 K was assumed to be 5.6 ×104 m−1 at 0.5 µm [5]. This large α value, however, could not be estimated using their Arrhenius equation [6]. As the focal length F of thermal lense effect is inversely as the α value [63], large α value of 5.6 ×104 m−1 is necessary to obtain s ...
Physical properties of silver oxide thin films by pulsed laser deposition
... tetragonal [5–7]. Silver oxide thin films have been prepared by several techniques: RF and dc sputtering [8, 9], thermal evaporation [10], chemical synthesis [2] and by pulsed laser deposition (PLD) [11]. Our earlier studies [8] on silver oxide thin films prepared by the reactive dc magnetron sputte ...
... tetragonal [5–7]. Silver oxide thin films have been prepared by several techniques: RF and dc sputtering [8, 9], thermal evaporation [10], chemical synthesis [2] and by pulsed laser deposition (PLD) [11]. Our earlier studies [8] on silver oxide thin films prepared by the reactive dc magnetron sputte ...
INFLUENCE OF OPTICAL PROPERTIES AND FIBERSEPARATION ON LASER DOPPLER FLOWMETRY
... theoretically using either a Monte Carlo simulation model4, 5 or a lattice random-walk model6. The latter two reports did not only show that the sampling depth increases with fiber separation but also that the it is affected by the optical properties of the tissue. In addition, Weiss et al. shows th ...
... theoretically using either a Monte Carlo simulation model4, 5 or a lattice random-walk model6. The latter two reports did not only show that the sampling depth increases with fiber separation but also that the it is affected by the optical properties of the tissue. In addition, Weiss et al. shows th ...
guide to thin section microscopy - Mineralogical Society of America
... Example: If an object is placed at a distance of 33 mm in front of a biconvex lens with a focal length of 30 mm, the lens will produce a 10-times magnified image (M = 10:1) at a distance of 330 mm behind the lens. The human eye can modify the focal length by changing the curvature of its lens such t ...
... Example: If an object is placed at a distance of 33 mm in front of a biconvex lens with a focal length of 30 mm, the lens will produce a 10-times magnified image (M = 10:1) at a distance of 330 mm behind the lens. The human eye can modify the focal length by changing the curvature of its lens such t ...
Fiber Optic Lab Manual
... This manual is an action-filled guide for completing nine stimulating activities related to fiber optic communications. The manual is compatible with most classroom texts and is ideal for creating a lab to go with almost any vocational or secondary-education fiber optics course. For best results we ...
... This manual is an action-filled guide for completing nine stimulating activities related to fiber optic communications. The manual is compatible with most classroom texts and is ideal for creating a lab to go with almost any vocational or secondary-education fiber optics course. For best results we ...
Fiber optic Fabry-Perot interferometer for
... A general optical fiber sensors classification differentiates intrinsic and extrinsic types. When light is modified outside fiber´s material then it is called extrinsic, on the other hand when light is modified inside the fiber it is the intrinsic type of sensor. Intrinsic sensors are commonly used ...
... A general optical fiber sensors classification differentiates intrinsic and extrinsic types. When light is modified outside fiber´s material then it is called extrinsic, on the other hand when light is modified inside the fiber it is the intrinsic type of sensor. Intrinsic sensors are commonly used ...
Get PDF - OSA Publishing
... EIT-based nonlinear schemes can be driven by traveling wave beams as well as by a standing wave (SW). The large nonlinearity was obtained in an atomic system driven by two counter propagating coupling fields which form a SW if the two counter propagating coupling fields have the same frequency [11, ...
... EIT-based nonlinear schemes can be driven by traveling wave beams as well as by a standing wave (SW). The large nonlinearity was obtained in an atomic system driven by two counter propagating coupling fields which form a SW if the two counter propagating coupling fields have the same frequency [11, ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.