摘要:
The present invention relates to a semiconductor optical amplifier device (10). According to the invention the semiconductor optical amplifier device (10) comprises - a plurality of active units (12, 14), each active unit (12, 14) comprising an active stripe structure (16, 18) of an optical amplifying medium and a current circuit (42) for injecting current into the corresponding active stripe structure (16, 18), wherein each active stripe structure (16, 18) extends from an input end (20) to an output end (22); and - an optical splitter device (34) for splitting incoming signal light and for distributing corresponding parts of the incoming signal light into the different input ends (20) of the active stripe structures (16, 18), wherein the optical splitter device (34) is configured to supply each active stripe structure (16, 18) with the same signals.
The present invention further relates to a corresponding optical matrix switch (54).
摘要:
The present document relates to a method for transmitting client data included in a client signal via an optical transmission path of an optical transport network, the optical transport network using transport frames comprising a transport frame period (T server ) for transmitting client data, the method comprising the steps of: - receiving multiple client entities comprising multiple client data bits; - determining the number of client data entities received during a transport frame period (T server ) in order to establish a mean number of client data entities (C n ) to be included in a transport frame, said mean number of client data entities (C n ) corresponding to a mean number of client data bits; - mapping multiple client data entities into the transport frame wherein mapping comprises alternately adding and subtracting an amount of client data bits to/from said mean number of client data bits for at least two consecutive transport frames; - transmitting the transport frames comprising said client data via the optical transport network.
摘要:
In order to improve the efficiency of optical data transmission between network interfaces (NIC1-NIC6) over a shared transmission medium (OR), one or more traffic channels (λt) and at least one control channel (λc) are provided. All network interfaces (NIC1-NIC6) will be synchronized to an absolute time reference (PTR1, PTR2). Data to be transmitted are assembled in the network interfaces into chunks. These chunks are scheduled for transmission by determining the availability of a selected one of said traffic channels at a scheduled transmit time. The scheduled transmit time and the selected traffic channel are announced to the other network interfaces via the control channel. At the scheduled transmit time, the scheduled chunk is transmitted over the shared transmission medium on the selected traffic channel.
摘要:
The present invention provides a high capacity switching system for use in a transport network, which contains a number of input/output subsystems and a central interconnection means configurably interconnecting the input/output subsystems. The subsystems have input/output line modules for receiving and transmitting data signals to and from transmission lines of the network, one or more link modules connecting the subsystems to the interconnection means, and local switching means switching data signals in time and space domain between the input/output modules and the one or more link modules within one subsystems. The link modules are adapted to aggregate data signals from different input/output line modules of the same input/output subsystems and destined to input/output line modules of another one of said input/output subsystems into signal bursts and add a payload gap to each signal burst. The switching system further has a scheduler which configures the interconnection means during the payload gaps to switch the signal bursts to their destination subsystems.
摘要:
The embodiments of the invention relate to a method for maximizing a payload data rate on a communication link (CL). The method contains determining a current transmission capacity of the communication link (CL) based on state information (CP-INFO, OP-INFO, E-INFO) about at least one current operating condition of the communication link (CL). The method further contains adapting based on the current transmission capacity the payload data rate and a forward error correction data rate for payload data of the payload data rate by maximizing the payload data rate. The embodiments of the invention further relate to a line card (LC) for maximizing a payload data rate on a communication link (CL). The line card (LC) contains a control unit (CU) which is configured to determine a current transmission capacity of the communication link (CL) based on state information (CP-INFO, OP-INFO, E-INFO) about at least one current operating condition of the communication link (CL). The control unit (CU) is further configured to adapt based on the current transmission capacity the payload data rate and a forward error correction data rate for payload data of the payload data rate by maximizing the payload data rate.
摘要:
It is proposed a method for operating an optical transport network node of an optical transport network to provide Shared Mesh Protection on an optical data unit level or to provide m:n linear protection on an optical data unit level. An analysis means (2) determines a memory address (4) of pre-calculated configuration data (6) residing on a memory (8) of the optical transport network node. A transmission means (10) of the optical transport network node is reconfigured with the pre-calculated configuration data (6) at the memory address (4) such that a normal traffic signal is transported via a protection transport entity.
摘要:
A method and related apparatus for transmitting an asynchronous transport signal over an optical fiber section of an Optical Transport Network is described. Higher order Optical Data Units (20) of an asynchronous transport signal to be transmitted will be encapsulated into outer transport frames (30) that offer a payload rate higher than a nominal bit rate of the asynchronous transport signal. An output optical signal, which contains the outer transport frames (30) with the encapsulated asynchronous transport signal, is generated at a locally generated clock rate (44) and transmitted over an optical fiber section. To encapsulate the asynchronous transport signal, its bit rate is adapted to the payload rate of the outer transport frames (30), which is derived from the locally generated clock (44) through a justification and stuffing process. This eliminates any frame phase or frequency transients occasionally appearing in the received asynchronous transport signal. The rate adapted transport signal is then synchronously mapped into the outer transport frames (30) at the rate of the locally generated clock (44).