LiNbO3 high-Speed optical FSK modulator
... Introduction: In previous works, frequency-shift-keying (FSK) modulation for coherent optical systems was investigated to obtain enhanced receiver sensitivity [ I , 2]. Recently, optical packet systems using FSK technique have received considerable attention. FSK is an effective scheme for optical l ...
... Introduction: In previous works, frequency-shift-keying (FSK) modulation for coherent optical systems was investigated to obtain enhanced receiver sensitivity [ I , 2]. Recently, optical packet systems using FSK technique have received considerable attention. FSK is an effective scheme for optical l ...
Visible Wavelength Fiber Bragg Grating Arrays for
... resolution in one instrument. Spectrometer acquisition speeds are not fast enough to generate multispectral data at rates that avoid spatial impairments due to the movements of living biological samples. In this paper we show that spectra can be acquired for each pixel in a confocal spatial scan by ...
... resolution in one instrument. Spectrometer acquisition speeds are not fast enough to generate multispectral data at rates that avoid spatial impairments due to the movements of living biological samples. In this paper we show that spectra can be acquired for each pixel in a confocal spatial scan by ...
Metal surface structuring with spatiotemporally focused femtosecond
... The results given above show that the STF scheme can help improve the quality for metal surface structuring particularly under high peak laser intensities, a condition frequently required for highthroughput surface structuring. One of the physical reasons behind this is shown in Fig. 2. One can real ...
... The results given above show that the STF scheme can help improve the quality for metal surface structuring particularly under high peak laser intensities, a condition frequently required for highthroughput surface structuring. One of the physical reasons behind this is shown in Fig. 2. One can real ...
lens theory - Laser Components
... and full angle divergence specifications. Single-stage excimer and copper vapor lasers are even more divergent, even when using unstable resonator optics. (Here, the beam divergence actually varies during the pulse, with the brightness increasing with round trip number.) For these lasers, the diverg ...
... and full angle divergence specifications. Single-stage excimer and copper vapor lasers are even more divergent, even when using unstable resonator optics. (Here, the beam divergence actually varies during the pulse, with the brightness increasing with round trip number.) For these lasers, the diverg ...
Optical Interferometers
... of interferometer has extremely high resolution, much better than, for example, a Michelson interferometer. For that reason Fabry-Perot interferometers are widely used in telecommunications, lasers and spectroscopy to control and measure the wavelengths of light. In this experiment we will take adva ...
... of interferometer has extremely high resolution, much better than, for example, a Michelson interferometer. For that reason Fabry-Perot interferometers are widely used in telecommunications, lasers and spectroscopy to control and measure the wavelengths of light. In this experiment we will take adva ...
optical fibre communication
... transferring that light to the optical fibre. This demands COUPLING light from core to the fibre, in a efficient way. Larger light sources are generally easy to align with fibres, but their lower intensity generally delivers less light. Transferring light between fibres requires careful alignment an ...
... transferring that light to the optical fibre. This demands COUPLING light from core to the fibre, in a efficient way. Larger light sources are generally easy to align with fibres, but their lower intensity generally delivers less light. Transferring light between fibres requires careful alignment an ...
Optical Nonlinearities in the Transparency Region of Bulk Semiconductors . W
... have been in semiconductors (Miller and Duncan, 1987; Hill et al., 1982) and involve near-gap excitation. However, these resonant nonlinearities, by their nature, involve significant linear absorption (see Chap. 1 in this volume and Chap. 5 in Vol. 59), which is undesirable in many applications. In ...
... have been in semiconductors (Miller and Duncan, 1987; Hill et al., 1982) and involve near-gap excitation. However, these resonant nonlinearities, by their nature, involve significant linear absorption (see Chap. 1 in this volume and Chap. 5 in Vol. 59), which is undesirable in many applications. In ...
Template BR_Rec_2002.dot
... wavelength. The single ray transmitted down the 8 to 10 micron core experiences different propagation delay at each wavelength within the 10 nm maximum spectral line width output of the laser (Table 1). The cliff effect point of single-mode fibre, many kilometres further than for multimode fibre, is ...
... wavelength. The single ray transmitted down the 8 to 10 micron core experiences different propagation delay at each wavelength within the 10 nm maximum spectral line width output of the laser (Table 1). The cliff effect point of single-mode fibre, many kilometres further than for multimode fibre, is ...
New approach to pulse propagation in nonlinear
... [7–9]. Although the FDTD method solves the pulse propagation problem with the least approximations, it is relatively time-consuming and is typically useful only for propagation distances shorter than 1 mm. In this paper, we propose a novel intuitive approach for studying propagation of optical pulse ...
... [7–9]. Although the FDTD method solves the pulse propagation problem with the least approximations, it is relatively time-consuming and is typically useful only for propagation distances shorter than 1 mm. In this paper, we propose a novel intuitive approach for studying propagation of optical pulse ...
Slowdown of light due to exciton-polariton propagation in ZnO
... transmitted through a 0.55-mm-thick Cermet ZnO sample in the α-measurement geometry (kc, E⊥c). Several important features can be noticed. First of all, the light could only be transmitted when photon energies are below 3.360 eV, which indicates strong near-band-edge absorption at the higher energie ...
... transmitted through a 0.55-mm-thick Cermet ZnO sample in the α-measurement geometry (kc, E⊥c). Several important features can be noticed. First of all, the light could only be transmitted when photon energies are below 3.360 eV, which indicates strong near-band-edge absorption at the higher energie ...
Molten-core fabrication of novel optical fibers
... the United States. The European Physical Society, representing the 41 national physical societies in Europe, is coordinating a proposal for the proclamation by the United Nations for an International Year of Light in 2015. This proposal received enthusiastic support from UNESCO. The technological ut ...
... the United States. The European Physical Society, representing the 41 national physical societies in Europe, is coordinating a proposal for the proclamation by the United Nations for an International Year of Light in 2015. This proposal received enthusiastic support from UNESCO. The technological ut ...
Optical fiber communication
... The leading edge causes the R.I of the fiber to rise, resulting in a blue shift. The falling edge causes the R.I of the fiber fall causing a red shift ...
... The leading edge causes the R.I of the fiber to rise, resulting in a blue shift. The falling edge causes the R.I of the fiber fall causing a red shift ...
16-level differential phase shift keying (D16PSK)
... 4 are input to a pre-coder, which output the pre-coded signals [Pa (t), Pb (t), Pc (t), Pd (t)] also at a bit rate B4 . These pre-coded signals drive the modulators to generate a 16-level differential phase modulated optical signal at a symbol rate of B4 . As each symbol carries four bits, the signa ...
... 4 are input to a pre-coder, which output the pre-coded signals [Pa (t), Pb (t), Pc (t), Pd (t)] also at a bit rate B4 . These pre-coded signals drive the modulators to generate a 16-level differential phase modulated optical signal at a symbol rate of B4 . As each symbol carries four bits, the signa ...
Single-frequency continuous-wave optical parametric oscillator
... and 2%), respectively. The signal is emitted as only a tiny leakage through the four highly reflecting resonator mirrors, and nearly all of the generated signal power (which can be inferred from the emitted idler power) is dissipated in the nonlinear crystal. It should therefore be possible to obtai ...
... and 2%), respectively. The signal is emitted as only a tiny leakage through the four highly reflecting resonator mirrors, and nearly all of the generated signal power (which can be inferred from the emitted idler power) is dissipated in the nonlinear crystal. It should therefore be possible to obtai ...
Absorption Enhancement in Ultrathin Crystalline Silicon Solar Cells
... where n is the real part of the refractive index. The absorption spectrum of our optimized structure is much higher than the single-pass absorption spectrum given by eq 1, and it is very close to the Yablonovitch-limit spectrum given by eq 2. The short circuit current of 34.6 mA/cm2 in our optimized ...
... where n is the real part of the refractive index. The absorption spectrum of our optimized structure is much higher than the single-pass absorption spectrum given by eq 1, and it is very close to the Yablonovitch-limit spectrum given by eq 2. The short circuit current of 34.6 mA/cm2 in our optimized ...
Fabrication and characterization of silicone-based - lammp
... To begin, 25 ml curing agent is retrieved with a disposable pipette and placed in a 25 ml plastic beaker. TiO2 is measured by weight and added to the curing agent. This is manually mixed and placed in an ultrasonic bath (BR1200-R-1, Branson) for 30 minutes. This solution should be stirred several ti ...
... To begin, 25 ml curing agent is retrieved with a disposable pipette and placed in a 25 ml plastic beaker. TiO2 is measured by weight and added to the curing agent. This is manually mixed and placed in an ultrasonic bath (BR1200-R-1, Branson) for 30 minutes. This solution should be stirred several ti ...
3D optical data storage
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120mm). Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.No commercial product based on 3D optical data storage has yet arrived on the mass market, although several companies are actively developing the technology and claim that it may become available ""soon"".