Theoretical and experimental investigation of direct detection optical
... where several SSB-OFDM signals are transmitted over different wavelengths, the aggregate per-fiber capacity can be increased. In [17], a beat interference cancellation receiver (BICR) that mitigates SSMI in Reduced GB SSB-OFDM (RSSB-OFDM) systems where the GB is less than the bandwidth of the OOFDM ...
... where several SSB-OFDM signals are transmitted over different wavelengths, the aggregate per-fiber capacity can be increased. In [17], a beat interference cancellation receiver (BICR) that mitigates SSMI in Reduced GB SSB-OFDM (RSSB-OFDM) systems where the GB is less than the bandwidth of the OOFDM ...
Multiple-wavelength operation of electroabsorption intensity
... on a single InGaAs/InGaAsP chip using a one-step quantum well intermixing process. This technique was demonstrated for tailoring the intensity modulator operating wavelength by incorporating low-energy 共360 keV兲 phosphorus ions implantation induced disordering process with gray-mask lithography tech ...
... on a single InGaAs/InGaAsP chip using a one-step quantum well intermixing process. This technique was demonstrated for tailoring the intensity modulator operating wavelength by incorporating low-energy 共360 keV兲 phosphorus ions implantation induced disordering process with gray-mask lithography tech ...
Lecture 11: Semiconductor lasers and light
... • Power-conversion (wall-plug) efficiency c – efficiency of converting electrical power to optical power (c ≤ ext) • Coupling efficiency couple – only a fraction of the light emitted from the LED can be coupled (e.g. to an optical fiber) ...
... • Power-conversion (wall-plug) efficiency c – efficiency of converting electrical power to optical power (c ≤ ext) • Coupling efficiency couple – only a fraction of the light emitted from the LED can be coupled (e.g. to an optical fiber) ...
Chapter 7- Components of Optical Instruments
... often for quantitative analysis. Direct-line fluorescence: Occurs when an electron in an excited state emits radiation upon falling, to an electron level that is above the level that is above from which the electron originally absorbed radiation. The wavelength of the emitted radiation is longer tha ...
... often for quantitative analysis. Direct-line fluorescence: Occurs when an electron in an excited state emits radiation upon falling, to an electron level that is above the level that is above from which the electron originally absorbed radiation. The wavelength of the emitted radiation is longer tha ...
Fifty years of laser: world and Latvian experience
... Stimulated Emission of Radiation) refers also to light amplifiers not only to light oscillators. As known, every amplifier can be turned in oscillator by appropriate feedback. This presentation is an attempt to give a brief history of laser including operation principles and main applications. Speci ...
... Stimulated Emission of Radiation) refers also to light amplifiers not only to light oscillators. As known, every amplifier can be turned in oscillator by appropriate feedback. This presentation is an attempt to give a brief history of laser including operation principles and main applications. Speci ...
N. Qureshi, H. Schmidt, A. Hawkins, “Near
... the material has different refractive indices for the two circularly polarized components of the light. This effect is used extensively in research and in industry as a non-invasive probe of magnetization in reflective thin films. Light is often focused using a microscope objective in order to obtai ...
... the material has different refractive indices for the two circularly polarized components of the light. This effect is used extensively in research and in industry as a non-invasive probe of magnetization in reflective thin films. Light is often focused using a microscope objective in order to obtai ...
Optical Components and Devices for Next-Generation
... electrical-to-optical (E/O) bandwidth of over 30 GHz. However, there is a tradeoff between the E/O bandwidth and drive voltage, both of which depend on the parameters of the CPW electrodes. Conventionally, CPW electrodes with a narrow gap and short interaction length have been used, resulting in a d ...
... electrical-to-optical (E/O) bandwidth of over 30 GHz. However, there is a tradeoff between the E/O bandwidth and drive voltage, both of which depend on the parameters of the CPW electrodes. Conventionally, CPW electrodes with a narrow gap and short interaction length have been used, resulting in a d ...
arXiv:quant-ph/0602132 v2 20 Feb 2006
... the diffraction limit of the read-out optics that prevents data storage densities beyond those of present day systems. The trend of compacting more information into an optical disc therefore primarily relies on the use of shorter wavelength lasers to achieve smaller diffraction limited spot sizes. O ...
... the diffraction limit of the read-out optics that prevents data storage densities beyond those of present day systems. The trend of compacting more information into an optical disc therefore primarily relies on the use of shorter wavelength lasers to achieve smaller diffraction limited spot sizes. O ...
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.