Optical waveguide mode control by nanoslit-enhanced
... The idea of controlling light with another optical wave has received much attention in the past decades. Nonlinear interactions in suitable optical materials are employed to transfer information from one electromagnetic wave to another, and form the basis of most nonlinear optics. Of special interes ...
... The idea of controlling light with another optical wave has received much attention in the past decades. Nonlinear interactions in suitable optical materials are employed to transfer information from one electromagnetic wave to another, and form the basis of most nonlinear optics. Of special interes ...
New imaging modes for lenslet-array tandem scanning microscopes
... and hence is similar to that obtained in traditional Nipkow disc systems, i.e. about 4% for the particular disc used. A simple explanation of this fact can be obtained by considering the individual images of the light source created by the lenslets on the pinhole disc. These images are found to be m ...
... and hence is similar to that obtained in traditional Nipkow disc systems, i.e. about 4% for the particular disc used. A simple explanation of this fact can be obtained by considering the individual images of the light source created by the lenslets on the pinhole disc. These images are found to be m ...
Non-invasive ophthalmic imaging of adult zebrafish eye using
... suitable bandpass filter or lock-in detection system. Twodimensional cross-sectional images and three-dimensional tomograms of the backscattered intensity distribution within the sample can be obtained by recording the interference signals from various axial and transverse positions on the sample. T ...
... suitable bandpass filter or lock-in detection system. Twodimensional cross-sectional images and three-dimensional tomograms of the backscattered intensity distribution within the sample can be obtained by recording the interference signals from various axial and transverse positions on the sample. T ...
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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. ...
Proposal and testing of dual-beam dynamic light
... Figure 1共b兲 shows the experimental setup and optical arrangement. Incident laser beam LB from a solidstate laser 共Coherent Verdi兲 of wavelength ⫽ 532 nm is directed through Bragg cell BC. The incident beam becomes multiple diverging beams when passing through the Bragg cell, which acts as an optic ...
... Figure 1共b兲 shows the experimental setup and optical arrangement. Incident laser beam LB from a solidstate laser 共Coherent Verdi兲 of wavelength ⫽ 532 nm is directed through Bragg cell BC. The incident beam becomes multiple diverging beams when passing through the Bragg cell, which acts as an optic ...
Beam shaping based on intermediate zone diffraction of a micro
... We further evaluated the beam focusing of the 0th-order maxima for wider slits of interest (up to ten wavelengths). It was found, as shown in Fig. 5, that the focal length (distance of maxima to slit screen) can extend to a range of tens of wavelengths, while the focal width (defined with full-width ...
... We further evaluated the beam focusing of the 0th-order maxima for wider slits of interest (up to ten wavelengths). It was found, as shown in Fig. 5, that the focal length (distance of maxima to slit screen) can extend to a range of tens of wavelengths, while the focal width (defined with full-width ...
History of Fiber Optics
... idea of using arrays of hollow pipes or transparent rods to transmit images for television or facsimile systems. However, the first person known to have demonstrated image transmission through a bundle of optical fibers was Heinrich Lamm, than a medical student in Munich. His goal was to look inside ...
... idea of using arrays of hollow pipes or transparent rods to transmit images for television or facsimile systems. However, the first person known to have demonstrated image transmission through a bundle of optical fibers was Heinrich Lamm, than a medical student in Munich. His goal was to look inside ...
The Optics of the Compound Eye of the Honeybee
... investigated the fine structure of the ommatidia of the worker honeybee (Apis mellifera), and with the help of their data we examined the optics of the honeybee's eye as a representative of the closed-rhabdom type. Morphology The optical apparatus of a bee's ommatidium (Fig. 1) consists of a cuticul ...
... investigated the fine structure of the ommatidia of the worker honeybee (Apis mellifera), and with the help of their data we examined the optics of the honeybee's eye as a representative of the closed-rhabdom type. Morphology The optical apparatus of a bee's ommatidium (Fig. 1) consists of a cuticul ...
S.72-227 Digital Communication Systems
... – like stripe geometry lasers but no optical feedback – easy coupling into multimode and single mode fibers Superluminescent LEDs: (SLD) 30 40 nm – spectra formed partially by stimulated emission – higher optical output than with ELEDs or SLEDs For modulation ELEDs provides the best linearity ...
... – like stripe geometry lasers but no optical feedback – easy coupling into multimode and single mode fibers Superluminescent LEDs: (SLD) 30 40 nm – spectra formed partially by stimulated emission – higher optical output than with ELEDs or SLEDs For modulation ELEDs provides the best linearity ...
Chapter 12: Optical Communications
... occurs when kxd = π, as suggested by Figure 12.2.3; ωTE3 can be determined by solving (12.2.12) for this case. This and all higher modes cannot be trapped at low frequencies because then the plane waves that comprise them impact the slab wall at angles beyond θc that permit escape. As ω increases, m ...
... occurs when kxd = π, as suggested by Figure 12.2.3; ωTE3 can be determined by solving (12.2.12) for this case. This and all higher modes cannot be trapped at low frequencies because then the plane waves that comprise them impact the slab wall at angles beyond θc that permit escape. As ω increases, m ...
focusing of light by corneal lenses in a reflecting superposition eye
... focuses the light (Iga, 1980). Interference fringes, demonstrating the existence of a refractive-index gradient, can be seen in Fig. 3. In the reflecting superposition eyes described by Vogt and Land, parallel rays incident on an ommatidium are not focused by that ommatidium (except perhaps for the ...
... focuses the light (Iga, 1980). Interference fringes, demonstrating the existence of a refractive-index gradient, can be seen in Fig. 3. In the reflecting superposition eyes described by Vogt and Land, parallel rays incident on an ommatidium are not focused by that ommatidium (except perhaps for the ...
Structure of Optical Vortices
... lated wavefront is transferred by a telescope to the back aperture of a 100 × NA 1.4 oil immersion objective lens mounted in a Zeiss Axiovert S100TV inverted optical microscope. The objective lens focuses the light into optical traps, in this case a single optical vortex. The same lens also forms im ...
... lated wavefront is transferred by a telescope to the back aperture of a 100 × NA 1.4 oil immersion objective lens mounted in a Zeiss Axiovert S100TV inverted optical microscope. The objective lens focuses the light into optical traps, in this case a single optical vortex. The same lens also forms im ...
Lec03 - nptel
... fact the skew rays go on spiralling around the axis of the optical fiber. The light energy carried by them is effectively confined to an annular region around the axis 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 ...
... fact the skew rays go on spiralling around the axis of the optical fiber. The light energy carried by them is effectively confined to an annular region around the axis 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 ...
Ultrafast and High Resolution Crack Detection Using Fully
... interrogation of fiber Bragg grating (FBG) sensors with unprecedented measurement speed of tens of MHz [2]. This is made possible by using chromatic dispersion to largely stretch an ultrashort broadband optical pulse such that the FBG wavelength change can be mapped to a temporal waveform shift, whi ...
... interrogation of fiber Bragg grating (FBG) sensors with unprecedented measurement speed of tens of MHz [2]. This is made possible by using chromatic dispersion to largely stretch an ultrashort broadband optical pulse such that the FBG wavelength change can be mapped to a temporal waveform shift, whi ...
Concepts of optical signal processing and optical communications
... remarkable because light appears a more natural choice as a carrier of information given the fact that – unlike radio waves – it did not have to be discovered. The lack of light sources with the capability of switching on and off radiation at a high rate and the lack of low-loss transmission systems ...
... remarkable because light appears a more natural choice as a carrier of information given the fact that – unlike radio waves – it did not have to be discovered. The lack of light sources with the capability of switching on and off radiation at a high rate and the lack of low-loss transmission systems ...
Calculation of surface optical properties: from qualitative
... where L is the bilayer thickness and xyy are parallel to the 110y110 direction. The difference Eq. (6) approaches zero only below the seventh atomic layer beneath the surface (cf. Fig. 3). Obviously, the surface-induced anisotropy of the microscopic electric fields reaches far into the bulk. It ther ...
... where L is the bilayer thickness and xyy are parallel to the 110y110 direction. The difference Eq. (6) approaches zero only below the seventh atomic layer beneath the surface (cf. Fig. 3). Obviously, the surface-induced anisotropy of the microscopic electric fields reaches far into the bulk. It ther ...
Full-field refractive index measurement with simultaneous phase
... phase-shift methods have the advantages of high measurement sensitivity and real-time image capture, they have complicated structures and high cost. Therefore, this paper presents a technique of simultaneous phase-shift interferometry for the measurement of the full-field refractive index. This techn ...
... phase-shift methods have the advantages of high measurement sensitivity and real-time image capture, they have complicated structures and high cost. Therefore, this paper presents a technique of simultaneous phase-shift interferometry for the measurement of the full-field refractive index. This techn ...
