摘要:
The invention particularly discloses a method of converging a metro network and an access network, a remote node and an optical line terminal, where the method includes: de-multiplexing in wavelength division a downlink transmission signal received from the metro network into at least one public wavelength, a dedicated wavelength downlink signal corresponding to the remote node and other wavelength signals; converting downlink data on the dedicated wavelength downlink signal onto the public wavelength to obtain a public wavelength signal; transmitting the public wavelength signal to the access network; removing downlink data in the dedicated wavelength downlink signal to obtain a dedicated wavelength; converting uplink data on an uplink transmission signal received from the access network onto the dedicated wavelength to obtain a dedicated wavelength upload signal; and uploading the dedicated wavelength upload signal to the metro network.
摘要:
Disclosed are a wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system according to one embodiment comprises: a service-provider device; a local node; and a plurality of subscriber devices. The service-provider device comprises: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers so as to multiplex/demultiplex the light transceived by the plurality of first optical transceivers; and a seed-light source providing seed light. Each of the plurality of subscriber devices comprises a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using a DWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second optical multiplexer/demultiplexer of the local node.
摘要:
A communication system (100) includes a first multiplexer (320a) multiplexing a first optical line terminal signal (SD1) having a first multiplexing group and a second optical line terminal signal (SDn) having a second multiplexing group into a first multiplexed signal (SDM). The communication system includes a second multiplexer (320b) demultiplexing a second multiplexed signal (SUM) into a third optical line terminal signal (SU1) having the first multiplexing group and a fourth optical line terminal signal (SUn) having the second multiplexing group. Moreover, the communication system includes a third multiplexer (310) optically connected with the first and second multiplexers, the third multiplexer configured to multiplex/demultiplex between a feeder optical signal (STa) and the first and second multiplexed signals. The first and second optical line terminal signals include a legacy upstream free spectral range, and the third and fourth optical line terminal signals include a legacy downstream free spectral range.
摘要:
The system of the invention, comprising: - at least one wavelength division multiplexed passive optical network (WDM- PON) with a head-end optical line terminal (OLT) termed as WDM-PON OLT, arranged to a remote node (RN); and - a plurality of optical network units (ONUs), further comprising a: - at least one primary passive assembly installed in a manhole/handhole, adapted to select a WDM downstream optical band and/or a seed signal, to receive a WDM upstream optical band with data to and from a group of said plurality of ONUs, and to let a plurality of other group of signals to be bidirectionally transmitted through a primary single fibre bus, and -at least one secondary passive assembly remotely installed in a manhole/handhole, adapted to demultiplex and multiplex a downstream and/or a seed signal and an upstream band, and provided by a remote primary assembly to which it is connected through a single fibre, to deliver a single pair of wavelengths to each one of said plurality of ONUs of the group.
摘要:
The present invention relates to an optical network system between optical line terminals in a time division passive optical network. The present invention comprises forming an optical network between optical line terminals (OLT), one of which exists in each optical network of multiple members comprised of a time division passive optical network, based on wavelength division multiplexing. According to the invention, more economic and efficient optical network conditions are provided between optical line terminals in a time division passive optical network.
摘要:
An Ethernet access network system for inverse multiplexing can comprise a reconciliation sublayer (RS) transmitter and an RS receiver. The RS transmitter can be configured to retrieve an LLID from a data stream; determine bonded channel connections at an ONU corresponding to the LLID, wherein each bonded channel connection is coupled to a FIFO buffer of a plurality of FIFO buffers; route one or more packets of the data stream to a first FIFO buffer of the plurality of FIFO buffers in response to the first FIFO buffer having a lowest fill rate; and transmit the one or more packets across the bonded channel connections. The RS receiver can be configured to receive the one or more packets; and arrange the one or more packets in order based on a packet order indicator.
摘要:
La presente invención describe un procedimiento, un sistema y un dispositivo de supervisión de un conjunto de fibras ópticas de una Red Óptica (detectando y localizando los fallos de las fibras ópticas desplegadas) los cuales resuelven algunos de los problemas afrontados por la técnica anterior. Las formas de realización de la presente invención proponen un sistema innovador que hace posible detectar y localizar de manera precisa e inequívoca los fallos incluso en redes de fibras ópticas complejas punto a multipunto.