Abstract:
An apparatus for collecting and distributing data over an optical fiber network includes an instructions for an interface communicable to a computing device enabling the computing device to define bandwidth provisioning information for a service level agreement and to assign the service level agreement to one or more optical network units connected to the apparatus.
Abstract:
Embodiments relate to providing simultaneous digital and analog services in optical fiber-based distributed radio frequency (RF) antenna systems (DASs), and related components and methods. A multiplex switch unit associated with a head-end unit of a DAS can be configured to receive a plurality of analog and digital downlink signals from one or more sources, such as a service matrix unit, and to assign each downlink signal to be transmitted to one or more remote units of the DAS. In one example, when two or more downlink signals are assigned to be transmitted to the same remote unit, a wave division multiplexer/demultiplexer associated with the multiplex switch unit can be configured to wave division multiplex the component downlink signals into a combined downlink signal for remote side transmission and to demultiplex received combined uplink signals into their component uplink signals for head-end side transmission.
Abstract:
Methods, systems, and apparatus, for an external cavity FP laser. In one aspect, an apparatus is provided that includes a FP laser diode; a Faraday rotator (FR) coupled to receive an optical output of the FP laser diode and that rotates a polarization of the optical output; an optical fiber coupled at a first end to receive the output of the FR; a WDM filter coupled to a second end of the optical fiber to receive the optical signal from the optical fiber; and a FRM coupled directly or indirectly to an output of the WDM filter, wherein an optical output of the WDM filter is partially reflected by the FRM such that the polarization of a reflected beam is rotated, and wherein the reflected optical signal then passes through the FR with its polarization being rotated by the FR before it is injected back into the FP laser diode.
Abstract:
La présente invention se rapporte à un dispositif lumineux réfléchissant destiné à un réseau d'accès optique WDM PON comprenant une source lumineuse avec un milieu de gain optique. Le dispositif lumineux (OD) comprend une source lumineuse avec un milieu de gain optique (Opt Gain), dont la longueur d'onde s'auto accorde lors d'un aller retour optique entre le milieu de gain optique et un composant optique réflectif (ORC) délimitant la cavité laser. Le composant optique réflectif est composé d'un amplificateur optique (PA) associé selon un montage optique réflectif à un dispositif polarisant (PD) pour que l'axe de polarisation de la lumière réfléchit soit le même que celui de la lumière émise.
Abstract:
The system of the present invention includes a plurality of ONTs adapted to provide multiple voice and data related services to different subscribers. Each of the plurality of ONTs comprises at least one receiver adapted to receive optical signals, a de-multiplexer to de-multiplex the optical signal into component signals, at least one transmitter and at least one output port. Further, the system includes a plurality of routers operatively coupled to the each of the plurality of ONTs. Furthermore, the system includes a plurality of subscriber devices communicably coupled to each of the plurality of routers. The subscriber devices are adapted to receive the de-multiplexed component signals routed by the corresponding router and provide data and voice services to the particular subscriber. Each of the ONTs configures separate domains for each of the routers operatively coupled thereto so as to enable sharing of the ONT.
Abstract:
A wavelength shifter module and a method therein for tuning an OTDR signal to at least one pre-selected wavelength in a passive optical network (PON). The wavelength of the OTDR signal is shifted to a pre-selected wavelength to enable a remote node in the optical distribution network ODN of the PON to forward the OTDR signal to a specific drop section in the ODN. The invention also includes a remote node and a method in a remote node for receiving a wavelength shifted OTDR signal having a preselected wavelength and outputting the wavelength shifted OTDR signal to a specific drop section. Furthermore, the invention involves a method for determining the location of a fault section in a drop section.