Orange S.A.

About: Orange S.A. is a company organization based out in Paris, France. It is known for research contribution in the topics: Terminal (electronics) & Signal. The organization has 6735 authors who have published 9190 publications receiving 156440 citations. The organization is also known as: Orange SA & France Télécom.

Spin splitting in the electron subband of asymmetric G a A s / A l x Ga 1 − x As quantum wells: The multiband envelope function approach

Abstract: The dependence on carrier concentration of the anisotropic spin splitting of the lowest electron subband in asymmetrically doped ${\mathrm{G}\mathrm{a}\mathrm{A}\mathrm{s}/\mathrm{A}\mathrm{l}}_{x}{\mathrm{Ga}}_{1\ensuremath{-}x}\mathrm{As}$ quantum wells is determined. We employ the multiband envelope function approach based on 8\ifmmode\times\else\texttimes\fi{}8 and $14\ifmmode\times\else\texttimes\fi{}14\mathbf{k}\ensuremath{\cdot}\mathbf{p}$ Hamiltonians. Our self-consistent calculations yield results in quantitative agreement with experimental data obtained from inelastic light scattering.

Measurement-based admission control for elastic traffic

Abstract: We propose and evaluate an implicit measurement-based scheme for elastic flow admission control in the Internet. We first discuss the nature of IP traffic and present a simple fluid flow model of statistical bandwidth sharing on an isolated bottleneck link. This model is used to guide our choice of admission control algorithms. The main contribution of the paper is to demonstrate by means of detailed packet level simulations that the proposed scheme is efficient and perfectly feasible.

Wavelength-tunable, distributed bragg reflector laser having selectively activated, virtual diffraction gratings

Abstract: A wavelength-tunably distributed Bragg reflector laser having selectively activated virtual diffraction gratings including a semiconductor guide layer (4) between two other semiconductor confinement layers (6,8) of opposite dopings A passive part of the laser has sections (SC1, SC2, SC3), each of which include a periodic arrangement (A) spatially modulating the distribution of the carriers or the electric field in the guide layer when a current is injected into the p-n junction formed by the two other layers or where the junction is reverse biased to create a diffraction grating Each section has an effective optical index cooperating with the corresponding diffraction grating in order to give a predetermined Bragg wavelength for the section

Activities on next-generation networks under Global Information Infrastructure in ITU-T

Abstract: Next-generation networks (NGN) is a new concept commonly used by network designers to depict their vision of future telecommunications networks. However, various views on NGN have been expressed so far by operators, manufacturers, and service providers, and the general wish is now to come to a common understanding on NGN and to prepare standards on it. This is the reason why the ITU-T has decided to start the standardization process on NGN under the form of a new ITU-T Project prepared by Study Group 13. This new Project is in line with results from the existing ITU-T Project on Global Information Infrastructure (GII) because NGN is seen as a concrete realization of the GII. The NGN 2004 Project is a coordination structure led by Study Group 13, with the role of organizing studies on NGN in ITU-T. The target for the NGN 2004 Project is to prepare Recommendations in 2004.

Method for dynamic management of a prepaid terminal subscription

Abstract: The invention concerns a method for the dynamic management of a prepaid terminal subscription data in a telecommunication network, whereby the client possessing such a terminal, acquires two numbers, and whereby, on first accessing the network from this terminal, the following two steps are carried out: requesting remote customisation from said terminal by inputting the first number followed by the network uploading an identity for identifying the latter; calling the network server from the terminal which indicates its identity and dialling by the user of the second number, followed, if authentication is correct, by the network sending to the terminal a voice memo indicating the call number associated with said terminal and the credit balance.