IOSR Journal of Applied Physics (IOSR-JAP)
... Glasses containing Bi2O3 have attracted considerable attention because of their wide applications in the field of glass-ceramics, thermal and mechanical sensors, reflecting windows, radiation shielding. They can be used as layers for optical and opto-electronic devices [1, 2]. Bismuthate glasses con ...
... Glasses containing Bi2O3 have attracted considerable attention because of their wide applications in the field of glass-ceramics, thermal and mechanical sensors, reflecting windows, radiation shielding. They can be used as layers for optical and opto-electronic devices [1, 2]. Bismuthate glasses con ...
P2SF: Physically-based Point Spread Function for
... The scaling factor s is equal to λ/NA. The user could specify the resolution and the number of sample (NPSF) for the PSF. The number of sample for the pupil function (NPUPIL) is, at least, 2 times NPSF to satisfy the Nyquist limit. In addition, the NPSF has to be a multiple of 2 in order to exploit ...
... The scaling factor s is equal to λ/NA. The user could specify the resolution and the number of sample (NPSF) for the PSF. The number of sample for the pupil function (NPUPIL) is, at least, 2 times NPSF to satisfy the Nyquist limit. In addition, the NPSF has to be a multiple of 2 in order to exploit ...
Semiconductor optical amplifier-based all-optical gates
... 168 Gb/s [57]. High-speed operation has also been achieved, using nonlinear loop mirrors with SOAs demonstrating demultiplexing from 250 Gb/s [58]. For demultiplexing of OTDM signals, the semiconductor-based interferometers do not yet achieve the speed of fiber-based NOLMs (e.g., [59]), but they hav ...
... 168 Gb/s [57]. High-speed operation has also been achieved, using nonlinear loop mirrors with SOAs demonstrating demultiplexing from 250 Gb/s [58]. For demultiplexing of OTDM signals, the semiconductor-based interferometers do not yet achieve the speed of fiber-based NOLMs (e.g., [59]), but they hav ...
1.1 Objectives
... of the laser beam. Self-focusing is self-induced (Kerr) lens effect. In the case of long pulses or continuous wave laser radiation, self-focusing phenomenon is responsible for the damage of optical elements [2] and appears to be the main limiting factor in the development and production of high powe ...
... of the laser beam. Self-focusing is self-induced (Kerr) lens effect. In the case of long pulses or continuous wave laser radiation, self-focusing phenomenon is responsible for the damage of optical elements [2] and appears to be the main limiting factor in the development and production of high powe ...
PPT
... Fiber Optics The field of fiber optics depends upon the total internal reflection of light rays traveling through tiny optical fibers. Once the light is introduced into the fiber, it will continue to reflect almost losslessly off the walls of the fiber and thus can travel long distances in the fibe ...
... Fiber Optics The field of fiber optics depends upon the total internal reflection of light rays traveling through tiny optical fibers. Once the light is introduced into the fiber, it will continue to reflect almost losslessly off the walls of the fiber and thus can travel long distances in the fibe ...
Use of Broadband, Continuous-Wave Diode Lasers in Cavity Ring
... issue that the current diode laser operates at a single wavelength, either by employing a tunable diode or by coupling m any diodes at once using ber optics. RESULTS AND DISCUSSION In this study we use a broadband, continuous-wave diode laser as the light source for CRDS. The measured ring-down li ...
... issue that the current diode laser operates at a single wavelength, either by employing a tunable diode or by coupling m any diodes at once using ber optics. RESULTS AND DISCUSSION In this study we use a broadband, continuous-wave diode laser as the light source for CRDS. The measured ring-down li ...
Optical processes
... where α is the angle between the initial and final photon polarization. • The scattered photon direction is perpendicular to the new photon’s polarization in such a way that the final direction, initial and final polarization are all in one plane. • Rayleigh scattering attenuation coefficient is cal ...
... where α is the angle between the initial and final photon polarization. • The scattered photon direction is perpendicular to the new photon’s polarization in such a way that the final direction, initial and final polarization are all in one plane. • Rayleigh scattering attenuation coefficient is cal ...
Ultra-thin plasmonic optical vortex plate based on phase
... plates,8 spatial light modulators,9 or holograms.10 This type of beam can also be directly generated by lasers as an intrinsic transverse mode11 or when an incident beam diffracts from fork-shaped intensity masks.10 Optical vortices are of great fundamental interest since they carry optical singular ...
... plates,8 spatial light modulators,9 or holograms.10 This type of beam can also be directly generated by lasers as an intrinsic transverse mode11 or when an incident beam diffracts from fork-shaped intensity masks.10 Optical vortices are of great fundamental interest since they carry optical singular ...
Plancks_Constant_Red_Tide
... A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting. Introduced as a practical electronic component in 1962, early LEDs emitted low-intensity red light, but modern versions are available across the vis ...
... A light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting. Introduced as a practical electronic component in 1962, early LEDs emitted low-intensity red light, but modern versions are available across the vis ...
All-Optical THz OFDM Communications using Photonic
... using a filter and there must be a guard band between them. This is not the case with Orthogonal Frequency Division Multiplexing (OFDM) which is a popular modulation format in present radio communications [10]. An OFDM signal consists of a number of closely spaced modulated carriers. Although the si ...
... using a filter and there must be a guard band between them. This is not the case with Orthogonal Frequency Division Multiplexing (OFDM) which is a popular modulation format in present radio communications [10]. An OFDM signal consists of a number of closely spaced modulated carriers. Although the si ...
Welcome to BME 495: Advanced Physical and Applied Optics
... optics. Coverage includes wave optics, Gaussian optics, Fourier optics, light propagation in continuous and turbid media, light scattering, statistical optics, and fiber optics. The course will consist of lectures, case studies and student presentations. The grading will be based on student presenta ...
... optics. Coverage includes wave optics, Gaussian optics, Fourier optics, light propagation in continuous and turbid media, light scattering, statistical optics, and fiber optics. The course will consist of lectures, case studies and student presentations. The grading will be based on student presenta ...
Wavelength Converters in Optical Communication Systems
... wavelength to another without entering the electrical domain. A simple technique for the realization of this function is the use of cross gain modulation (XGM) in semiconductor optical amplifiers (SOA’s). The principle is depicted in Fig. 3.4.1(a)[9] [11] showing an intensity modulated input signal ...
... wavelength to another without entering the electrical domain. A simple technique for the realization of this function is the use of cross gain modulation (XGM) in semiconductor optical amplifiers (SOA’s). The principle is depicted in Fig. 3.4.1(a)[9] [11] showing an intensity modulated input signal ...
Attenuation in Left-handed Waveguide Structure by Equivalent
... methods are complex and are not easy to use in calculations and designs. The propagation attenuation of a metal-clad optical waveguide for TE waves is different from that TM waves and recently this large TM to TE loss ratio is used to produce a polarizer or mode analyzer for integrated-optics circui ...
... methods are complex and are not easy to use in calculations and designs. The propagation attenuation of a metal-clad optical waveguide for TE waves is different from that TM waves and recently this large TM to TE loss ratio is used to produce a polarizer or mode analyzer for integrated-optics circui ...
Default Normal Template
... displacement, pressure, electric currents, magnetic fields and various other material and environmental properties. Fiber optic sensors provide several advantages over their electrical counterparts, namely, high bandwidth, small size, light weight, corrosion resistance, geometrical flexibility and a ...
... displacement, pressure, electric currents, magnetic fields and various other material and environmental properties. Fiber optic sensors provide several advantages over their electrical counterparts, namely, high bandwidth, small size, light weight, corrosion resistance, geometrical flexibility and a ...
Ohmic Contacts With Ultra-Low Optical Loss on Heavily Doped n
... Over the past decade, membrane photonics has emerged as a promising platform technology for hybrid integration of III-V materials with Si chips [1]–[5]. It has also brought new technological challenges for fabricating devices with good performance. For example, ohmic contacts with good electrical an ...
... Over the past decade, membrane photonics has emerged as a promising platform technology for hybrid integration of III-V materials with Si chips [1]–[5]. It has also brought new technological challenges for fabricating devices with good performance. For example, ohmic contacts with good electrical an ...
Silicon photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups such as that of Prof. Michal Lipson, who see it is a means for keeping on track with Moore's Law, by using optical interconnects to provide faster data transfer both between and within microchips.The propagation of light through silicon devices is governed by a range of nonlinear optical phenomena including the Kerr effect, the Raman effect, two photon absorption and interactions between photons and free charge carriers. The presence of nonlinearity is of fundamental importance, as it enables light to interact with light, thus permitting applications such as wavelength conversion and all-optical signal routing, in addition to the passive transmission of light.Silicon waveguides are also of great academic interest, due to their ability to support exotic nonlinear optical phenomena such as soliton propagation.