Spider Silk: The Mother Nature`s Biological Superlens
... To summarise, this paper verified that the minor ampullate spider silk, spun from the Nephila edulis spider, has the properties to perform as an optical superlens by utilising photonic nanojets to carry the surface information at a highspatial-frequency, which can resolve 100-nm objects and patterns ...
... To summarise, this paper verified that the minor ampullate spider silk, spun from the Nephila edulis spider, has the properties to perform as an optical superlens by utilising photonic nanojets to carry the surface information at a highspatial-frequency, which can resolve 100-nm objects and patterns ...
Acousto-Optic Modulators
... M2: Figure of Merit Properties and figures of merit M2 for various acousto-optic materials. n is the refractive index, v is the acoustic velocity, and pij is the maximum photoelastic coefficient . (Extracted from I-Cheng Chang, Ch 6, "AcoustoOptic Modulators" in The Handbook of Optics, Vol. V, Ed. ...
... M2: Figure of Merit Properties and figures of merit M2 for various acousto-optic materials. n is the refractive index, v is the acoustic velocity, and pij is the maximum photoelastic coefficient . (Extracted from I-Cheng Chang, Ch 6, "AcoustoOptic Modulators" in The Handbook of Optics, Vol. V, Ed. ...
Use of Optical Coherence Tomography to Assess Variations
... Disclosure: M.C.C. Lim, None; S.-T. Hoh, None; P.J. Foster, None; T.-H. Lim, None; S.-J. Chew, None; S.K.L. Seah, None; T. Aung, None The publication costs of this article were defrayed in part by page charge payment. This article must therefore be marked “advertisement” in accordance with 18 U.S.C. ...
... Disclosure: M.C.C. Lim, None; S.-T. Hoh, None; P.J. Foster, None; T.-H. Lim, None; S.-J. Chew, None; S.K.L. Seah, None; T. Aung, None The publication costs of this article were defrayed in part by page charge payment. This article must therefore be marked “advertisement” in accordance with 18 U.S.C. ...
A Study on Rayleigh Backscattering Noise in Single Fiber
... optical loss in acrylic polymers by theoretical modification [17] and also in bidirectional optical communication and wavelength-reuse fiber systems [18-22]. In a bidirectional system, data is transmitted in both directions over a single fiber (Figure 2). If we compared with the unidirectional syste ...
... optical loss in acrylic polymers by theoretical modification [17] and also in bidirectional optical communication and wavelength-reuse fiber systems [18-22]. In a bidirectional system, data is transmitted in both directions over a single fiber (Figure 2). If we compared with the unidirectional syste ...
Diagnosing Early Keratoconus - Haag
... than normal corneas; (2) keratoconic corneas have a much thicker epithelium overall; and (3) keratoconus suspects have a thicker epithelium as well. These findings may help us develop guiding parameters to detect early, subtle cases of keratoconus. By using Optovue’s ETM routinely, in addition to wh ...
... than normal corneas; (2) keratoconic corneas have a much thicker epithelium overall; and (3) keratoconus suspects have a thicker epithelium as well. These findings may help us develop guiding parameters to detect early, subtle cases of keratoconus. By using Optovue’s ETM routinely, in addition to wh ...
Imaging the Division Process in Living Tissue Culture Cells
... shuttering, we have been able to double the practical image acquisition efficiency of our microscopes. While a 100- ms exposure actually requires about a 250- ms light exposure using the original turn-key system, through our customization we have reduced this to ~112 ms. As a result, we can now reco ...
... shuttering, we have been able to double the practical image acquisition efficiency of our microscopes. While a 100- ms exposure actually requires about a 250- ms light exposure using the original turn-key system, through our customization we have reduced this to ~112 ms. As a result, we can now reco ...
Optical fibers are not affected by interference
... Optical repeaters are purely optical devices that are used simply to combat attenuation in the fiber; typically spans of 80km upwards are now possible. The recent introduction of soliton transmission methods has increased the allowed distance between repeaters and systems spanning 130km without a r ...
... Optical repeaters are purely optical devices that are used simply to combat attenuation in the fiber; typically spans of 80km upwards are now possible. The recent introduction of soliton transmission methods has increased the allowed distance between repeaters and systems spanning 130km without a r ...
Orbits, Vision, and Visual Loss - isabelle m. germano, md, facs, faans
... inflammatory fibromyotendinitis) may appear on CT and MR imaging as a diffuse infiltrate or focal mass. In the diffuse form, there is inflammatory infiltrate of the orbital fat, extraocular muscles, and adnexal structures, particularly in the orbital apex. The more focal forms of IOS commonly involv ...
... inflammatory fibromyotendinitis) may appear on CT and MR imaging as a diffuse infiltrate or focal mass. In the diffuse form, there is inflammatory infiltrate of the orbital fat, extraocular muscles, and adnexal structures, particularly in the orbital apex. The more focal forms of IOS commonly involv ...
Slide 1
... [5] A. Leung, P. M. Shankar, and R. Mutharasan, "A review of fiber-optic biosensors," Sensors and Actuators B-Chemical, vol. 125, pp. 688-703, 2007. [6] K. E. Sapsford, T. Pons, I. L. Medintz, and H. Mattoussi, "Biosensing with luminescent semiconductor quantum dots," Sensors, vol. 6, pp. 925-953, 2 ...
... [5] A. Leung, P. M. Shankar, and R. Mutharasan, "A review of fiber-optic biosensors," Sensors and Actuators B-Chemical, vol. 125, pp. 688-703, 2007. [6] K. E. Sapsford, T. Pons, I. L. Medintz, and H. Mattoussi, "Biosensing with luminescent semiconductor quantum dots," Sensors, vol. 6, pp. 925-953, 2 ...
Full Text PDF
... In the last few years it has been discovered that films consisting of small metallic particles embedded in a dielectric host material have optical properties that might be useful in a variety of technological applications, e.g. as coatings for solar energy absorbers [1]. Calculations relating to the ...
... In the last few years it has been discovered that films consisting of small metallic particles embedded in a dielectric host material have optical properties that might be useful in a variety of technological applications, e.g. as coatings for solar energy absorbers [1]. Calculations relating to the ...
Governing the speed of light and its application to the
... phase shift imposed upon the detected RF subcarrier can be changed. Another approach to obtain tunable SFL effects, without requiring the change in the frequency of the optical signal, is focused on the modification by external means of the spectrum of the resonance. For example, in a medium showing ...
... phase shift imposed upon the detected RF subcarrier can be changed. Another approach to obtain tunable SFL effects, without requiring the change in the frequency of the optical signal, is focused on the modification by external means of the spectrum of the resonance. For example, in a medium showing ...
Interferometric back focal plane microellipsometry
... from the interferograms. In Eq. ~13!, In is the measured intensity at each pixel in the nth frame. Two sets of interferogram data are recorded per d measurement: The first has input polarization orthogonal to that of the second. The difference in the two resulting phase maps is calculated to obtain ...
... from the interferograms. In Eq. ~13!, In is the measured intensity at each pixel in the nth frame. Two sets of interferogram data are recorded per d measurement: The first has input polarization orthogonal to that of the second. The difference in the two resulting phase maps is calculated to obtain ...
Efficient visible light detection using individual germanium nanowire
... polarization-sensitive nanoscale light detector in the visible range. It is also found that the PC shows sensitive optical response especially in the low intensity regime. We observe a high internal gain in PC in conjunction with strong saturation behavior, which is attributed to the filling of surf ...
... polarization-sensitive nanoscale light detector in the visible range. It is also found that the PC shows sensitive optical response especially in the low intensity regime. We observe a high internal gain in PC in conjunction with strong saturation behavior, which is attributed to the filling of surf ...
Imaging Laboratory Exercise Scanning Electron Microscope
... of the illuminating light. As a result of this limitation, the optical microscope's resolution is roughly 0.1 m - too large to let us see even viruses, let alone atoms. To read more about this limitation, visit the pages on Limiting Vision. This limit is roughly the size of the wavelength of the pro ...
... of the illuminating light. As a result of this limitation, the optical microscope's resolution is roughly 0.1 m - too large to let us see even viruses, let alone atoms. To read more about this limitation, visit the pages on Limiting Vision. This limit is roughly the size of the wavelength of the pro ...
Optical measurement of the axial eye length by laser Doppler
... At the position where the fringes are seen, d is measured and OL = d ± CL/2. Actually, the first measurements of the eye length, with the use of a precursor of the technique described here, were carried out in this manner.910 An electronic detection of interference fringes to indicate the balance of ...
... At the position where the fringes are seen, d is measured and OL = d ± CL/2. Actually, the first measurements of the eye length, with the use of a precursor of the technique described here, were carried out in this manner.910 An electronic detection of interference fringes to indicate the balance of ...
optical fiber communication
... A semiconductor laser emits light through stimulated emission rather than spontaneous emission, which results in high output power (~100 mW) as well as other benefits related to the nature of coherent light. ...
... A semiconductor laser emits light through stimulated emission rather than spontaneous emission, which results in high output power (~100 mW) as well as other benefits related to the nature of coherent light. ...
Optical Fiber Communication
... allowing high coupling efficiency (~50 %) into single-mode fiber. The narrow spectral width also allows for high bit rates since it reduces the effect of chromatic dispersion. Furthermore, semiconductor lasers can be modulated directly at high frequencies because of short recombination time. ...
... allowing high coupling efficiency (~50 %) into single-mode fiber. The narrow spectral width also allows for high bit rates since it reduces the effect of chromatic dispersion. Furthermore, semiconductor lasers can be modulated directly at high frequencies because of short recombination time. ...
Deliverable 9: Blueprints of ICT relevant demonstrators As pointed
... as thin-film optical isolators. In addition, we have proposed to use photonic metamaterials that can be used as tunable switches at THz frequencies, and finally we have proposed to use photonic metamaterials for electro-optic modulation. Chirality only exists in truly three-dimensional structures, i ...
... as thin-film optical isolators. In addition, we have proposed to use photonic metamaterials that can be used as tunable switches at THz frequencies, and finally we have proposed to use photonic metamaterials for electro-optic modulation. Chirality only exists in truly three-dimensional structures, i ...
Transfer of Light Helicity to Nanostructures
... interaction of structured light, such as radially polarized beams, with plasmonic or metallic structures [13–15]. However, these previous studies mostly focused on optical properties, such as mode selection, plasmon focusing, etc., of plasmonic or metallic structures, including photonic crystals as ...
... interaction of structured light, such as radially polarized beams, with plasmonic or metallic structures [13–15]. However, these previous studies mostly focused on optical properties, such as mode selection, plasmon focusing, etc., of plasmonic or metallic structures, including photonic crystals as ...
Introduction
... directs it on the grating. The second mirror gathers the light from the grating and directs the multiple images of the input slit onto the detector. The concave mirrors are carefully arranged to minimize the optical aberrations introduced by the mirrors. The range of wavelengths detected can be vari ...
... directs it on the grating. The second mirror gathers the light from the grating and directs the multiple images of the input slit onto the detector. The concave mirrors are carefully arranged to minimize the optical aberrations introduced by the mirrors. The range of wavelengths detected can be vari ...
Unit 1.7 Optical networking and processing
... OFG selects which, if any, of the add wavelengths are reflected forward to port 1 of the OC along with the pass-through wavelengths. At port 1 of the OC the selected add wavelengths and pass-through wavelengths are passed to the output at port 2. ...
... OFG selects which, if any, of the add wavelengths are reflected forward to port 1 of the OC along with the pass-through wavelengths. At port 1 of the OC the selected add wavelengths and pass-through wavelengths are passed to the output at port 2. ...
2 Theory (2 pages)
... situation where this information is necessary one may apply two beams of differing frequency. Assuming that the frequency of the second beam is S2 = 0 + 2, this results in; ...
... situation where this information is necessary one may apply two beams of differing frequency. Assuming that the frequency of the second beam is S2 = 0 + 2, this results in; ...
II. Material and methods - HAL
... (c) The impulse spectral analysis The combination of these three elements allows: - A contactless and noninvasive measurement (obtained by (a)), consequently possible without medical intervention. - A strongly increased simplicity in the optical adjustments required (obtained by (b)). - A significan ...
... (c) The impulse spectral analysis The combination of these three elements allows: - A contactless and noninvasive measurement (obtained by (a)), consequently possible without medical intervention. - A strongly increased simplicity in the optical adjustments required (obtained by (b)). - A significan ...
Optical forces through guided light deflections
... contrast to perfect reflection, the partial refractions and reflections at the material interfaces is a less efficient way of transferring momentum. For example, light reflection on silver microbeads at NA = 1.25 can produce axial forces with efficiencies up to Q ~3.5. Reflections off metallic beads ...
... contrast to perfect reflection, the partial refractions and reflections at the material interfaces is a less efficient way of transferring momentum. For example, light reflection on silver microbeads at NA = 1.25 can produce axial forces with efficiencies up to Q ~3.5. Reflections off metallic beads ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.