Abstract:
A system and method for measuring propagation delays and other delays in an optical switching system. A transmitter is connected, through a circuit switch, to a receiver. To measure the propagation delay between the transmitter and the receiver, the transmitter sends one or more time-tagged ranging messages and the receiver calculates a propagation delay from the difference between the time of receipt and the time of transmission. In another embodiment, a time delay between message transmission and transition of a CDR of the receiver to a fast acquisition mode is adjusted, by trial and error, to find a range of such time delays for which transmission is successful. A time delay between the transmitter and the switch is measured by establishing or breaking the connection and determining, for various tentative time delay values, whether transmission succeeds.
Abstract:
Example methods and apparatus to implement an electrical/optical transceiver to facilitate data transfer are disclosed. An example apparatus includes an electrical transceiver lane to transfer data at a first bandwidth over an electrical link. The example apparatus also includes a plurality of optical transceiver sub-lanes to transfer data over an optical link. The example apparatus also includes a lane switch to dynamically map the electrical transceiver lane to the plurality of optical transceiver sub-lanes based on an analysis of the first bandwidth and the plurality of optical transceiver sub-lanes to accommodate the first bandwidth with at least a subset of the plurality of optical transceiver sub-lanes to transfer data between the electrical link and the optical link.
Abstract:
L'invention propose u n système d'immersion d'au moins un premier utilisateur (1) dans une réalité virtuelle ou augmentée comprenant un espace d'immersion (2) dans lequel peut se déplacer ledit au moins un premier utilisateur (1). Selon l'invention le système comprend : - un dispositif de réception optique (11) porté par ledit premier utilisateur, - des moyens de traitement (3) comprenant : - des moyens de génération d'un premier flux multimédia immersif destiné audit premier utilisateur (11) en fonction des mouvements de ce dernier, - des moyens de transmission optique (TxO 1 , TxO 2 ... TxO n ) d'un signal optique multiplexé (λ 1 , λ 2 ...λ n ) vers au moins une borne d'accès optique (PAO), ladite borne d'accès optique (PAO) étant disposée dans ledit espace d'immersion (2) de façon à former une cellule optique (CEO) s'étendant dans ledit espace d'immersion (2), ledit dispositif de réception optique (11) comprenant a) des moyens de réception du signal optique multiplexé (λ 1 , λ 2 ...λ n ) depuis ladite borne d 'accès optique (PAO) via une liaison optique sans fil lorsque ledit premier utilisateur (1) se situe dans la cellule optique (CEO), et b) des moyens de filtrage configurés pour extraire le premier flux multimédia immersif destiné au premier utilisateur (1) à partir du signal optique multiplexé (λ 1 , λ 2 ...λ n )·
Abstract:
A method for communication between two endpoints (300), (302) over an optical distribution network (314) where the endpoints are connected to the optical distribution network over optical network units (304), (306). These optical network units are connected to at least one optical routing element (312). The optical network units and the at least one optical routing element are controlled by an optical controller (310). The two endpoints are controlled by a wireless controller (308). A communication request between the two endpoints is created (400) by the wireless controller. The communication request is sent (402) from the wireless controller to the optical controller. Further the optical controller identifies (404) the optical network units connected to the two endpoints. The optical controller checks (406) if the optical network units belong to the same optical distribution network and configures (408) the optical network units to transmit and receive a first wavelength spectrum and the at least one optical routing element to route the first wavelength spectrum. The optical controller requests (410) the wireless controller to establish the communication between the two endpoints over the optical distribution network.
Abstract:
An optoelectronic switch for switching a signal from an input device to an output device includes a plurality of switch modules, each connected or connectable to an optical interconnecting region, wherein: each switch module is configured to output a WDM output signal to the optical interconnecting region, and the optoelectronic switch further includes one or more MZI routers, each configured to direct the WDM output signal from its source switch module towards its destination switch module, wherein the one or more MZI routers are located either on each of the switch modules, or in the interconnecting region.
Abstract:
The embodiments of the invention relate toa line switching component (LSC) separable from a line card of a network node. The line switching component (LSC) contains at least one input port (EIP-1) for receiving an optical input signal from an optical transport network and at least one output port (EOP-1) for transmitting an optical output signal to the optical transport network. The line switching component (LSC) further contains at least one further output port (IOP-2) configured to be connected to an input port of at least one optical interface of the line card and at least one further input port (IIP-2) configured to be connected to an output port of the at least one further optical interface of the line card. The line switching component (LSC) even further contains a switchable optical path system (ICL-1, ICL-2, ICL-3, ICL-4, ICL-5,, SW-1, SW-2) configured to operate the line switching component (LSC) in a first operation mode by receiving the optical input signal at the at least one input port (EIP-1) and by providing the optical input signal via the at least one further output port (IOP-2) to the at least one optical interface for further processing of the optical input signal at the at least one optical interface and by receiving the optical output signal from the at least one further optical interface at the at least one further input port for transmitting the optical output signal via the at least one output port (EOP-1) and to operate the line switching component (LSC) in a second operation mode by forwarding the optical input signal from the at least one input port (EIP-1) to the at least one output port (EOP-1) for transmitting the optical input signal as the optical output signal, when a malfunction has occurred at the line card (LC) or at the network node (NN) or when the second operation mode has been enforced. The embodiments further relate to a method for operating a line switching component(LC), to a line card which contains the line switching component (LC) and to a network node which contains the line card with the line switching component (LC).