Fiber Optics: How Fused Fiber Optic Couplers Work
... Up to this point we have tacitly assumed that a single transfer of energy has occurred from one fiber to the other. In reality, energy transfers back and forth between the two fibers many times over the coupling region (also called the Interaction Length). The transfer rate is a function of waveleng ...
... Up to this point we have tacitly assumed that a single transfer of energy has occurred from one fiber to the other. In reality, energy transfers back and forth between the two fibers many times over the coupling region (also called the Interaction Length). The transfer rate is a function of waveleng ...
L. Koechlin Optical principles of diffraction focusing
... High angular resolution: as a solid aperture the size of the array. High dynamic range: 108 on compact objects, more with coronagraphy & postprocessing. Large tolerance in positioning of subapertures: for λ/50 wavefront quality in the UV on a 30 meters membrane array: 50 μm in the plane of the membr ...
... High angular resolution: as a solid aperture the size of the array. High dynamic range: 108 on compact objects, more with coronagraphy & postprocessing. Large tolerance in positioning of subapertures: for λ/50 wavefront quality in the UV on a 30 meters membrane array: 50 μm in the plane of the membr ...
Performance of synchronous optical receivers using atmospheric
... system performance. Later analyses have attempted to overcome these limitations and fully characterize the statistics of heterodyne optical systems by assuming a highly simplified model of atmospheric effects [3,4]. An alternate approach, aimed at overcoming the limitations of previous work, is base ...
... system performance. Later analyses have attempted to overcome these limitations and fully characterize the statistics of heterodyne optical systems by assuming a highly simplified model of atmospheric effects [3,4]. An alternate approach, aimed at overcoming the limitations of previous work, is base ...
Types of polarization
... Natural or unpolarized light from an ordinary source such as a discharge lamp consists of the total output from a very large number of randomly oriented atomic emitters. Each excited atom radiates a linearly polarized wave train for ~ 10 -8 s and new wave trains are constantly emitted so that the ov ...
... Natural or unpolarized light from an ordinary source such as a discharge lamp consists of the total output from a very large number of randomly oriented atomic emitters. Each excited atom radiates a linearly polarized wave train for ~ 10 -8 s and new wave trains are constantly emitted so that the ov ...
Technological Education Institute (TEI) of Piraeus
... Fiber optic sensors: distributed fiber sensors Raman and stimulated Brillouin scatter distributed optical sensors - Modification of the spectral content of the light propagating through the fiber in response to an external measurand - The measurand is determined by evaluating the spectral content ...
... Fiber optic sensors: distributed fiber sensors Raman and stimulated Brillouin scatter distributed optical sensors - Modification of the spectral content of the light propagating through the fiber in response to an external measurand - The measurand is determined by evaluating the spectral content ...
Ellipsometer Manual
... and amplitude change of the light upon reflection are now also influenced by the optical properties of the substrate and the thickness of the thin film. So now we have suddenly 6 parameters that can influence and , i.e. nsub, ksub, nfilm, kfilm, , t (=film thickness). As each ellipsometric measu ...
... and amplitude change of the light upon reflection are now also influenced by the optical properties of the substrate and the thickness of the thin film. So now we have suddenly 6 parameters that can influence and , i.e. nsub, ksub, nfilm, kfilm, , t (=film thickness). As each ellipsometric measu ...
A nanometer notch filter with high rejection and throughput
... of ruby laser light), is for z lo6 rejection at the ruby laser wavelength, (AL = 694.3 nm), and > 50% transmission within -0.5 nm of /zL and a throughput beam product of f/50X 1 cm. Dielectric filters are available with - lo6 attenuation but with bandwidths of 2 10 nm, too broad in the context of fo ...
... of ruby laser light), is for z lo6 rejection at the ruby laser wavelength, (AL = 694.3 nm), and > 50% transmission within -0.5 nm of /zL and a throughput beam product of f/50X 1 cm. Dielectric filters are available with - lo6 attenuation but with bandwidths of 2 10 nm, too broad in the context of fo ...
1.5 MB
... of the vectors n sense is arbitrary, however, the whole vector field along singular lines must be continuous. The phase circulation splits vortex lines into two classes: left and right handed. As it was mentioned in many previous papers, the fields containing such singular lines are studied in a giv ...
... of the vectors n sense is arbitrary, however, the whole vector field along singular lines must be continuous. The phase circulation splits vortex lines into two classes: left and right handed. As it was mentioned in many previous papers, the fields containing such singular lines are studied in a giv ...
Sample manuscript showing specifications and style
... with blue light. But the lateral position of the reconstructed points in space remains unchanged for red green an blue. There is only a small z-shift of the object points with wavelength. That also means that in principle LED light sources can be used for each color instead of a laser, as has been d ...
... with blue light. But the lateral position of the reconstructed points in space remains unchanged for red green an blue. There is only a small z-shift of the object points with wavelength. That also means that in principle LED light sources can be used for each color instead of a laser, as has been d ...
Third-harmonic Rayleigh scattering: theory and experiment
... just one particle. The presence of the index-matching liquid removes the possibility of particle trapping in the focal spot of the laser beam and facilitates the comparison of experimental results with theory. The laser beam was focused approximately 200 m below the surface of the cell wall. At thi ...
... just one particle. The presence of the index-matching liquid removes the possibility of particle trapping in the focal spot of the laser beam and facilitates the comparison of experimental results with theory. The laser beam was focused approximately 200 m below the surface of the cell wall. At thi ...
Drawing Ray Diagrams for Concave Mirrors
... FOCAL POINT (F) - A point half-way between the centre of curvature and the vertex where all parallel light rays come together. ...
... FOCAL POINT (F) - A point half-way between the centre of curvature and the vertex where all parallel light rays come together. ...
Fast Algorithms for Estimating Aerosol Optical Depth and Correcting Thematic Mapper Imagery
... as before. We nd the optical depth of each pixel (not a window), and therefore we expect to generate more accurate estimates. It turns out with this modi cation, there are no window e ects and the tested images were corrected much more accurately than before (Figure 2.d). A major problem with our m ...
... as before. We nd the optical depth of each pixel (not a window), and therefore we expect to generate more accurate estimates. It turns out with this modi cation, there are no window e ects and the tested images were corrected much more accurately than before (Figure 2.d). A major problem with our m ...
Decoherence: Phases washed out or smeared recoil drift
... integration of emitted photons to those that are registered by a detector covering the solid angle ∆Ω (as seen from the atom) thereby selecting a particular subensemble of atoms [6]. The validity of this representation has not only been shown theoretically [6] but also in experiment [4, 5]. To compa ...
... integration of emitted photons to those that are registered by a detector covering the solid angle ∆Ω (as seen from the atom) thereby selecting a particular subensemble of atoms [6]. The validity of this representation has not only been shown theoretically [6] but also in experiment [4, 5]. To compa ...
The Four-Quadrant Phase-Mask Coronagraph. I. Principle
... example is related to the problem of the direct imaging of extrasolar planets, a question which is now becoming of paramount importance ; a coronagraphic device appears absolutely mandatory since the contrast between the star and an orbiting planet, even as bright as Jupiter, is 109 in the visible a ...
... example is related to the problem of the direct imaging of extrasolar planets, a question which is now becoming of paramount importance ; a coronagraphic device appears absolutely mandatory since the contrast between the star and an orbiting planet, even as bright as Jupiter, is 109 in the visible a ...
an edge following algorithm and its application
... Fig. 4). The signal flights to a point of the object and back. The appliance measures the transit time of the signal from the radar transmitter to the reflecting object and back to the radar receiver. The speed of the signal propagation is known, so we can calculate the roundtrip distance, the dista ...
... Fig. 4). The signal flights to a point of the object and back. The appliance measures the transit time of the signal from the radar transmitter to the reflecting object and back to the radar receiver. The speed of the signal propagation is known, so we can calculate the roundtrip distance, the dista ...
AOK2-UP01 - February 2, 2015
... immediate interaction with the AO Kit Deformable Mirror and Shack-Hartmann Wavefront Sensor. This software is ideal for research, development, and educational applications. Additionally, the demo software provides pop-up tooltips containing detailed information pertaining to specific function calls ...
... immediate interaction with the AO Kit Deformable Mirror and Shack-Hartmann Wavefront Sensor. This software is ideal for research, development, and educational applications. Additionally, the demo software provides pop-up tooltips containing detailed information pertaining to specific function calls ...
t ln 2 ln Xt −ln X0 = t log 2 log Xt −log X0
... The sample is placed in a special test tube called a "cuvette", which fits the spectrophotometer snugly. Cuvettes are very expensive and care should be exercised in handling them. To cut down on the costs, we use regular small test tubes in place of cuvettes. If the cuvette is rotated within its hol ...
... The sample is placed in a special test tube called a "cuvette", which fits the spectrophotometer snugly. Cuvettes are very expensive and care should be exercised in handling them. To cut down on the costs, we use regular small test tubes in place of cuvettes. If the cuvette is rotated within its hol ...
Michelson Interferometer
... 4. Turn the laser on and adjust the laser beam height using lab jack lifting knob until the beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be p ...
... 4. Turn the laser on and adjust the laser beam height using lab jack lifting knob until the beam is approximately parallel with the top of the interferometer and strikes the mirror at the centre. 5. Set the viewing screen opposite of the adjustable mirror M2. Note that the viewing screen should be p ...