منابع مشابه
Noiseless Optical Amplification of Images
We used a spatially broadband optical parametric amplifier for image amplification. In the phasesensitive configuration of the amplifier, we observed noiseless amplification of input images. For a gain of 2.5, we measured noise-figure values of (0.2 6 0.6) and (0.4 6 0.5) dB, respectively, for two amplifiers of different lengths. These experimental values agree with theory (for an ideal noisele...
متن کاملUniversal optical amplification without nonlinearity
Vincent Josse, 2 Metin Sabuncu, Nicolas J. Cerf, Gerd Leuchs, and Ulrik L. Andersen ∗ Institut für Optik, Information und Photonik, Max-Planck Forschungsgruppe, Universität Erlangen-Nürnberg, Günther-Scharowsky str. 1, 91058, Erlangen, Germany LCFIO, UMR8501 du CNRS, Bâtiment 503 Centre Universitaire, 91403 Orsay Cedex, France QuIC, Ecole Polytechnique, CP 165, Universitè Libre de Bruxelles, 10...
متن کاملNear-Nyquist optical pulse generation with fiber optical parametric amplification.
A novel method using optical fiber parametric amplification and phase modulation is proposed in order to generate Nyquist pulses. Using parabolic pulses as a pump, we show theoretically that it is possible to generate Nyquist pulses. Furthermore, we show that by using a sinusoidal pump (pump intensity modulated by an RF tone), it is possible to obtain pulses with characteristics that are close ...
متن کاملPeriodic amplification and conjugation of optical solitons.
Nondegenerate optical parametric amplifiers can be used to simultaneously phase conjugate and amplify a pulse in a nonlinear optical fiber. The gain in the amplifiers compensates the linear loss in the fiber, while the phase conjugation effectively neutralizes second-order dispersion, self-phase modulation, the Raman self-frequency shift, and Gordon-Haus jitter. If the remaining third-order and...
متن کاملParametric image amplification in optical cavities
We show the possibility of noiseless amplification of an optical image in cavities containing a parametric oscillator. We consider a confocal ring cavity with plane mirrors and compare with the case of planar cavity. In the latter case the system operates with severe spatial limitations, while in the confocal case, there is the possibility of preserving the signal-to-noise ratio while amplifyin...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2011
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.11564