Waveguide electro-optic modulation in micro-engineered
... driving voltage. These applications of domain inversion techniques might be even more important and commercially valuable than those in nonlinear optics (e.g. quasi-phase-matched optical parametric devices). With respect to standard single-domain structures, larger bandwidths and lower driving volta ...
... driving voltage. These applications of domain inversion techniques might be even more important and commercially valuable than those in nonlinear optics (e.g. quasi-phase-matched optical parametric devices). With respect to standard single-domain structures, larger bandwidths and lower driving volta ...
Engineering nonlinearities in nanoscale optical systems
... air or ncladding ⬃ 1.45 for silica), results in very tight light confinement. Such strong light confinement lets Si guided-wave devices be scaled down to ultrasmall cross sections, i.e., ⬍0.1 µm2. These devices are termed Si photonic wires (SPWs). This reduction to nanoscale cross section, which is ...
... air or ncladding ⬃ 1.45 for silica), results in very tight light confinement. Such strong light confinement lets Si guided-wave devices be scaled down to ultrasmall cross sections, i.e., ⬍0.1 µm2. These devices are termed Si photonic wires (SPWs). This reduction to nanoscale cross section, which is ...
Nonlinear Phase Noise in Fiber Optical Communication
... generated from inversion of electrons from the Meta stable state to the stable state. These spontaneously generated photons are also amplified within the amplifier and thus act as noise source in the system. The power spectral density of ASE noise is given by [1 p.188-189] ...
... generated from inversion of electrons from the Meta stable state to the stable state. These spontaneously generated photons are also amplified within the amplifier and thus act as noise source in the system. The power spectral density of ASE noise is given by [1 p.188-189] ...
Development of a Tm3+-doped Fluoride Glass - DORAS
... constructed in this work has an operating wavelength of X = 2.3 n.m, which corresponds to an absorption band of many hydrocarbon gases. The thulium-doped fibre has been fully characterised in terms of absorption, fluorescence and fluorescence lifetimes. These data were then used to choose a pump las ...
... constructed in this work has an operating wavelength of X = 2.3 n.m, which corresponds to an absorption band of many hydrocarbon gases. The thulium-doped fibre has been fully characterised in terms of absorption, fluorescence and fluorescence lifetimes. These data were then used to choose a pump las ...
Vertical Cavity Surface Emitting Laser (VCSEL) Technology
... 1970s at the Tokyo Institute of Technology by Kenichi Iga and his colleagues. The device was first suggested in 1977, and in order to operate they indicated that VCSEL should have a very small cavity volume, high optical gain, and mirrors with a very high reflectively. At this time one of the major ...
... 1970s at the Tokyo Institute of Technology by Kenichi Iga and his colleagues. The device was first suggested in 1977, and in order to operate they indicated that VCSEL should have a very small cavity volume, high optical gain, and mirrors with a very high reflectively. At this time one of the major ...
Fiber Accelerating Structures
... From: http://ab-initio.mit.edu/photons/tutorial/, Retrieved 8/12/09 ...
... From: http://ab-initio.mit.edu/photons/tutorial/, Retrieved 8/12/09 ...
A minimally invasive in-fibre Bragg grating sensor
... For any optical fibre, the birefringence in the fibre core can be expressed as the sum of three contributions [26]: ...
... For any optical fibre, the birefringence in the fibre core can be expressed as the sum of three contributions [26]: ...
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.