Martti Kauranen , 1182 (2013); DOI: 10.1126/science.1247622
... experiment was performed using four-wave mixing (FWM) instead of the simpler SH generation. The main reason for this is that the structure has a near-zero index only over a narrow wavelength range around 1330 nm. Whereas SH generation involves two very different input and output wavelengths, FWM occ ...
... experiment was performed using four-wave mixing (FWM) instead of the simpler SH generation. The main reason for this is that the structure has a near-zero index only over a narrow wavelength range around 1330 nm. Whereas SH generation involves two very different input and output wavelengths, FWM occ ...
Dynamic Simulation of Optical MEM Switches
... through a free-space gap. The switching system is in the “cross” state when the light is passed straight across the free-space gap. However, to switch to the “bar” state, a micro-mirror is inserted between the fibers at a 45-degree angle, and the light is reflected to the alternate output. Systems b ...
... through a free-space gap. The switching system is in the “cross” state when the light is passed straight across the free-space gap. However, to switch to the “bar” state, a micro-mirror is inserted between the fibers at a 45-degree angle, and the light is reflected to the alternate output. Systems b ...
EE 5551
... – Describe in general the evolution of optical networks – Describe the operating principles of fiber optic systems; identify the capabilities and limitations – Get to know the system components such as laser, detectors, amplifiers, multiplexers, demultiplexers, and describe how they are used – Famil ...
... – Describe in general the evolution of optical networks – Describe the operating principles of fiber optic systems; identify the capabilities and limitations – Get to know the system components such as laser, detectors, amplifiers, multiplexers, demultiplexers, and describe how they are used – Famil ...
485-146 - Wseas.us
... LiNbO3 substrate was fabricated by the standard technique of thermal indiffusion of titanium stripes [5]. The orientation of the waveguide (light propagation direction) was along the optical C axis of the LiNbO3 crystal. The fabricated waveguides had excellent optical quality and low losses (< 1dB). ...
... LiNbO3 substrate was fabricated by the standard technique of thermal indiffusion of titanium stripes [5]. The orientation of the waveguide (light propagation direction) was along the optical C axis of the LiNbO3 crystal. The fabricated waveguides had excellent optical quality and low losses (< 1dB). ...
Optical simulation to enhance PV module encapsulation
... consisting of the solar cell and the surrounding air. Usually the integration of the cell into a module encapsulation boosts the electrical power output by 1–2% due to the better matching of the optical interfaces involved: Antireflection coating (nAR = 1.9–2.3) to EVA (nEVA = 1.45) to glass (nGlass ...
... consisting of the solar cell and the surrounding air. Usually the integration of the cell into a module encapsulation boosts the electrical power output by 1–2% due to the better matching of the optical interfaces involved: Antireflection coating (nAR = 1.9–2.3) to EVA (nEVA = 1.45) to glass (nGlass ...
Content
... ○ an enabler for transparent optical networks ● Tandem Connection Monitoring (TCM) ○ Unlike SDH, OTN has six TCM fields. ○ Allowing each network to be monitored. ...
... ○ an enabler for transparent optical networks ● Tandem Connection Monitoring (TCM) ○ Unlike SDH, OTN has six TCM fields. ○ Allowing each network to be monitored. ...
Chalcogenide glass microphotonics: Stepping into the spotlight
... example, a focusing-dispersive element optical resonators for spectroscopic CaF2 substrates followed by lithographic with tunable focal length was realized by sensing. Their unique ability to store patterning to define sensor structures. attaching a flexible diffractive grating to photons for an ext ...
... example, a focusing-dispersive element optical resonators for spectroscopic CaF2 substrates followed by lithographic with tunable focal length was realized by sensing. Their unique ability to store patterning to define sensor structures. attaching a flexible diffractive grating to photons for an ext ...
Metamaterials at Optical Frequencies: Fabrication and Measurements
... generally) at appropriate wavelengths. Before considering the metamaterial properties of SRR arrays – or more complicated structures that include SRRs as one of several patterns – it is appropriate to cite Soukoulis and co-workers6. Here the properties of ‘real’ metallic photonic crystal structures ...
... generally) at appropriate wavelengths. Before considering the metamaterial properties of SRR arrays – or more complicated structures that include SRRs as one of several patterns – it is appropriate to cite Soukoulis and co-workers6. Here the properties of ‘real’ metallic photonic crystal structures ...
Week4-figs
... Historical Development: Ray Optics → Wave Optics → EM Optics → Quantum Optics. • Ray Optics is an approximation of Wave Optics in which wavelength short compared to other dimensions (focal lengths, diameter of optical components, etc.) so that Diffraction can be ignored. ...
... Historical Development: Ray Optics → Wave Optics → EM Optics → Quantum Optics. • Ray Optics is an approximation of Wave Optics in which wavelength short compared to other dimensions (focal lengths, diameter of optical components, etc.) so that Diffraction can be ignored. ...
Sub-wavelength grating for enhanced ring resonator biosensor
... Silicon photonics is an emerging chip-scale technology focused on manipulating near-infrared light in sub-micron silicon wires [1]. Its compatibility with mainstream CMOS foundry processes facilitates the fabrication of complex chip-scale photonic systems at economies of scale [2, 3] for optical mul ...
... Silicon photonics is an emerging chip-scale technology focused on manipulating near-infrared light in sub-micron silicon wires [1]. Its compatibility with mainstream CMOS foundry processes facilitates the fabrication of complex chip-scale photonic systems at economies of scale [2, 3] for optical mul ...
a) Given the transfer function of a detector (below), label and
... Please use your drawing to illustrate how PMT and APD work and compare the mechanisms which enable them to achieve signal amplification. Also, explain why is it hard to make a detector that has high detectivity while also preserves a high detection speed? ...
... Please use your drawing to illustrate how PMT and APD work and compare the mechanisms which enable them to achieve signal amplification. Also, explain why is it hard to make a detector that has high detectivity while also preserves a high detection speed? ...
Optical amplifiers
... An SOA is based on the same technology as a Fabry-Perot diode laser. The amplification function is achieved by externally pumping the energy levels of the material. In order to get only the amplification function, it is necessary to protect the device against self-oscillations generating the laser e ...
... An SOA is based on the same technology as a Fabry-Perot diode laser. The amplification function is achieved by externally pumping the energy levels of the material. In order to get only the amplification function, it is necessary to protect the device against self-oscillations generating the laser e ...
INTERFERENCE
... Both of these involve splitting the light from a single source into two beams. Division of amplitude This involves splitting a single light beam into two beams, a reflected beam and a transmitted beam, at a surface between two media of different refractive index. ...
... Both of these involve splitting the light from a single source into two beams. Division of amplitude This involves splitting a single light beam into two beams, a reflected beam and a transmitted beam, at a surface between two media of different refractive index. ...
Synopses by Kim Larsen
... Low intensity light incident on a surface will increase its temperature, but usually not enough to significantly deform the object due to its thermal conductivity dissipating the heat such that no significant thermal gradient can develop. However, high-powered lasers are so intense that even for a m ...
... Low intensity light incident on a surface will increase its temperature, but usually not enough to significantly deform the object due to its thermal conductivity dissipating the heat such that no significant thermal gradient can develop. However, high-powered lasers are so intense that even for a m ...
Design and Simulation of DPSS Laser with SHG for Material
... HR, Nd:YVO4 (vanadate), KTP, and OC mirrors are all permanently aligned. For many applications, no additional optics is required. Such systems are used mainly for SHG, which involve two fundamental mode photons [9]. The dimensions of DPM0101 crystal is approximately 1x1x2.5mm. Vanadate doping and th ...
... HR, Nd:YVO4 (vanadate), KTP, and OC mirrors are all permanently aligned. For many applications, no additional optics is required. Such systems are used mainly for SHG, which involve two fundamental mode photons [9]. The dimensions of DPM0101 crystal is approximately 1x1x2.5mm. Vanadate doping and th ...
Light Sources * II The Laser
... effect, i.e., a change in the absorption spectrum caused by an applied electric field, which changes the bandgap energy. Most EAM are made in the form of a waveguide with electrodes for applying an electric field in a direction perpendicular to the modulated light beam. EAM can operate with much low ...
... effect, i.e., a change in the absorption spectrum caused by an applied electric field, which changes the bandgap energy. Most EAM are made in the form of a waveguide with electrodes for applying an electric field in a direction perpendicular to the modulated light beam. EAM can operate with much low ...
Optical frequency standard
... Quite generally, frequency standards with a high oscillation frequency profit from a better stability than those with lower oscillation frequencies. Although optical sources are used for some functionalities (optical pumping, laser cooling of atoms), all present primary and secondary frequency stand ...
... Quite generally, frequency standards with a high oscillation frequency profit from a better stability than those with lower oscillation frequencies. Although optical sources are used for some functionalities (optical pumping, laser cooling of atoms), all present primary and secondary frequency stand ...
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.