Generation of lattices of optical vortices
... for perpendicular propagating probe beam. This effective lens is modulated by the dark-vortex structure. In our experiment the probe beam of a single-mode He-Ne laser was aligned to cross the pump beam 1 cm inside the NLM. The input profile is shown in Fig. 4a and its circular symmetry is evident. W ...
... for perpendicular propagating probe beam. This effective lens is modulated by the dark-vortex structure. In our experiment the probe beam of a single-mode He-Ne laser was aligned to cross the pump beam 1 cm inside the NLM. The input profile is shown in Fig. 4a and its circular symmetry is evident. W ...
Silicon-on-Insulator Grating Duplexer for Fiber-to-the
... power diffracted upwards by the grating to the total diffracted power when excited from the SOI waveguide) for the 1310nm wavelength channel and the 1490nm wavelength channel. This led to an optimal grating overlay thickness of 140nm and a grating duty cycle (defined as the ratio of the slit width t ...
... power diffracted upwards by the grating to the total diffracted power when excited from the SOI waveguide) for the 1310nm wavelength channel and the 1490nm wavelength channel. This led to an optimal grating overlay thickness of 140nm and a grating duty cycle (defined as the ratio of the slit width t ...
L/f 1
... The largest distance that can clearly be seen is called the far-point FP. a good human eye can visualize objects that are extremely far away (moon/stars) and the far point is then close to infinity. ...
... The largest distance that can clearly be seen is called the far-point FP. a good human eye can visualize objects that are extremely far away (moon/stars) and the far point is then close to infinity. ...
Theory of relativistic optical harmonic generation
... case of third-harmonic generation relates the polarization of the medium to the third power of the electric field amplitude of the incident laser beam. Harmonic light is then radiated as a consequence of the time-varying polarization of the medium. The standard calculational procedure presupposes th ...
... case of third-harmonic generation relates the polarization of the medium to the third power of the electric field amplitude of the incident laser beam. Harmonic light is then radiated as a consequence of the time-varying polarization of the medium. The standard calculational procedure presupposes th ...
3 Introduction to Add
... bypassing faulty connections, allowing minimal service disruption and the ability to adapt or upgrade the optical network to different WDM technologies. Configurations presented in the literature to perform the required add or drop functions use both planar and fibre technology. Planar devices [28-3 ...
... bypassing faulty connections, allowing minimal service disruption and the ability to adapt or upgrade the optical network to different WDM technologies. Configurations presented in the literature to perform the required add or drop functions use both planar and fibre technology. Planar devices [28-3 ...
Laser tweezers and their applications
... hologram produces a three-dimensional light field, when illuminated by a suitable laser. This allows several traps to be created simultaneously[25], from one laser source and controlled without the need for moving mirrors or acousto-optical deflectors. Suitably high-resolution hologram projection te ...
... hologram produces a three-dimensional light field, when illuminated by a suitable laser. This allows several traps to be created simultaneously[25], from one laser source and controlled without the need for moving mirrors or acousto-optical deflectors. Suitably high-resolution hologram projection te ...
Construction of a femtosecond mode
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
Multimode or Single-Mode Optical Fiber
... OM1 multimode optical fiber is virtually obsolete and is relegated for use with extensions or repairs of legacy, low bandwidth systems. 62.5 µm OM1 fiber supports only 33 meters at 10G, and is not even recognized as an option for faster speeds. 50 µm multimode optical fibers were first deployed in t ...
... OM1 multimode optical fiber is virtually obsolete and is relegated for use with extensions or repairs of legacy, low bandwidth systems. 62.5 µm OM1 fiber supports only 33 meters at 10G, and is not even recognized as an option for faster speeds. 50 µm multimode optical fibers were first deployed in t ...
Molten-core fabrication of novel optical fibers
... enhanced performance from fibers. Historically, new materials with properties not available in conventional optical glasses (like silica) are developed. Examples include fluoride glasses for reduced losses and more efficient light emissions from active dopants, or tellurite and chalcogenide glasses ...
... enhanced performance from fibers. Historically, new materials with properties not available in conventional optical glasses (like silica) are developed. Examples include fluoride glasses for reduced losses and more efficient light emissions from active dopants, or tellurite and chalcogenide glasses ...
Michelson interferometer
... only at discrete, well defined wavelengths. A filter F is employed to suppress light of wavelengths other than the green line of the mercury spectrum. Further requirements on the source that will not be discussed in detail here, is that of spatial coherence, meaning that the wave entering the interf ...
... only at discrete, well defined wavelengths. A filter F is employed to suppress light of wavelengths other than the green line of the mercury spectrum. Further requirements on the source that will not be discussed in detail here, is that of spatial coherence, meaning that the wave entering the interf ...
Refractive indexes of (Al,Ga,In)As epilayers on InP for optoelectronic
... continuously varied from 1.47 eV (Alo,4xIno,52As) to 0.75 eV (Gao.471no,53As)while maintaining a lattice constant matched to InP. The two ternary endpoints have a relatively large 0.5 eV conduction band offset, an attractive feature for electron confinement in quantum well structures. The material s ...
... continuously varied from 1.47 eV (Alo,4xIno,52As) to 0.75 eV (Gao.471no,53As)while maintaining a lattice constant matched to InP. The two ternary endpoints have a relatively large 0.5 eV conduction band offset, an attractive feature for electron confinement in quantum well structures. The material s ...
Optical amplifier
An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers are important in optical communication and laser physics.There are several different physical mechanisms that can be used to amplify a light signal, which correspond to the major types of optical amplifiers. In doped fibre amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light. In semiconductor optical amplifiers (SOAs), electron-hole recombination occurs. In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons. Parametric amplifiers use parametric amplification.