Abstract: A method for efficient utilization of a transport capacity provided by an optical transport network includes mapping client signals comprising lower order optical data units into optical data tributary units, each requiring a number of tributary slots of an aggregate payload area having a size corresponding to the available aggregated OPU payload areas of Nx independent higher order optical data units to be transported. The method further includes multiplexing the optical data tributary units into the aggregate payload area. The method further includes mapping the tributary slots of the aggregate payload area into tributary slots provided by the OPU payload areas of the Nx independent higher order Optical data units according to a predefined mapping rule. The method further includes multiplexing the Nx independent optical data units containing the payload areas or transmitting them as optical transport units.

Abstract: A method for removing static differential delays resulting from an independent transport of the client signals of a client signal bundle through an optical transport network, OTN, which comprises OTN mappers mapping received client signals to ODU signals transported to OTN demappers demapping received ODU signals to client signals, wherein a process slave, PS, at the OTN mapper end of said OTN network supplies continuously or in response to a received request information about timing relations between the client signals of said client signal bundle to a process master, PM, at the OTN demapper end of said OTN network used by the process master, PM, to remove the static differential delays between the client signals of the respective client signal bundle.

Abstract: An invention provides a method for efficient utilization of a transport capacity provided by an Optical Transport Network, OTN, the method comprising the steps of: (a) mapping (S1) client signals comprising Lower Order, LO, Optical Data Units, LO ODUk, into Optical Data Tributary Units, ODTU, each requiring a number of Tributary Slots, TS, of an aggregate OPU_N payload area having a size corresponding to the available aggregated OPU payload areas of Nx independent Higher Order, HO, Optical Data Units, HO ODUk, to be transported; (b) multiplexing (S2) the Optical Data Tributary Units, ODTU, into the aggregate OPU_N payload area; (c) mapping (S3) the Tributary Slots, TS, of the aggregate OPU_N payload area into Tributary Slots, TS, provided by the OPU payload areas of the Nx independent Higher Order, HO, Optical Data Units, HO ODUk, according to a predefined mapping rule, MR; and (d) further multiplexing the Nx independent Optical Data Units, ODUk, containing the OPU payload areas or transmitting them as Optica

Abstract: A method for removing static differential delays resulting from an independent transport of the client signals of a client signal bundle through an optical transport network, OTN, which comprises OTN mappers mapping received client signals to ODU signals transported to OTN demappers demapping received ODU signals to client signals, wherein a process slave, PS, at the OTN mapper end of said OTN network supplies continuously or in response to a received request information about timing relations between the client signals of said client signal bundle to a process master, PM, at the OTN demapper end of said OTN network used by the process master, PM, to remove the static differential delays between the client signals of the respective client signal bundle.

Abstract: The invention relates to a method for the transmission of a digital signal in inverse multiplexing, particularly via an Optical Transport Network (OTN), in which a digital signal to be transmitted, which is split into a certain number M of several sub-signals, where each sub-signal of a transmit side of a transmission line assigned exclusively to this sub-signal is transmitted to a reception side of the assigned transmission line, and in which, on the reception side of the transmission lines, the sub-signals are reassembled to a digital reception signal.

Abstract: Provided are methods and devices for determining the assignment of subsignals (S1, S2, S3, S4) transmitted by inverse multiplexing, particularly via an Optical Transport Network (OTN), to the transmission links (5a, 5b, 5c, 5d) carrying said subsignals. After a synchronization for the correct assembly of the subsignals (S1, S2, S3, S4) into the digital reception signal (E), the signal transmission via at least one transmission link (5a, 5b, 5c, 5d) is interrupted for a detection process in which the subsignal assigned to the interrupted link is determined. The process may be repeated to determine all subsignal assignments.

Abstract: An optical transceiver unit for an optical WDM transmitting and receiving device is taught, with a transmitting unit to which a data signal can be fed to a specified channel input port of a multiplexer unit, wherein a separate channel wavelength is allocated to each channel input port, and the transmitting unit can be tuned with respect to optical carrier wavelength across a specified range of wavelengths. The transmitting unit is constructed so that, within the specified range of wavelengths, discrete wavelengths can be set that correspond to the channel wavelengths. In tuning mode, the controller unit can drive the transmitting unit so that the possible channel wavelengths are scanned through. The controller unit evaluates the reception signal fed to it from the receiving unit for whether abort criteria for tuning mode have been fulfilled or not, wherein the scanning process is continued until the abort criteria are fulfilled.

Abstract: Schemes are provided for starting up optical transmission links where, after a link interruption, endpoints switch into a startup mode original detection state, and a query-transmit pulse goes out at both end points at given time intervals. In a “TRANSMITTED” handshake mode, in a loop to be passed through n times, and at least once, after the transmission of a transmit pulse, it is detected whether a received pulse is received within a given time span. If no received pulse is received, then the mode is ended and the system is returned to the original detection state. If a received pulse is received, it is answered with another transmit pulse. After the last transmit pulse, if another received pulse occurs within a given time span, the link is activated. If not, the “TRANSMITTED” handshake mode ends and the system enters the original detection state.

Abstract: The invention pertains to a method for determining the assignment of subsignals (S1, S2, S3, S4) transmitted by inverse multiplexing, particularly via an Optical Transport Network (OTN), to the transmission links (5a, 5b, 5c, 5d) carrying said subsignals with the following steps: a digital transmission signal (S) to be transmitted is divided into a certain number M of subsignals (S1, S2, S3, S4), wherein each subsignal of a transmitting end of a transmission link (5a, 5b, 5c, 5d) that is assigned exclusively to this subsignal is transmitted to a receiving end of the assigned transmission link; the subsignals (S1, S2, S3, S4) are once again assembled into a digital reception signal (E) on the receiving ends of the transmission links (5a, 5b, 5c, 5d); after a synchronization for the correct assembly of the subsignals (S1, S2, S3, S4) into the digital reception signal (E) has been carried out on the receiving end, the signal transmission via at least one transmission link (5a, 5b, 5c, 5d) is interrupted for a de

Abstract: The invention relates to a method for the transmission of a digital signal in inverse multiplexing, particularly via an Optical Transport Network (OTN), in which a digital signal to be transmitted, which is split into a certain number M of several sub-signals, where each sub-signal of a transmit side of a transmission line assigned exclusively to this sub-signal is transmitted to a reception side of the assigned transmission line, and in which, on the reception side of the transmission lines, the sub-signals are reassembled to a digital reception signal.

Abstract: An optical transceiver unit for an optical WDM transmitting and receiving device is taught, with a transmitting unit to which a data signal can be fed to a specified channel input port of a multiplexer unit, wherein a separate channel wavelength is allocated to each channel input port, and the transmitting unit can be tuned with respect to optical carrier wavelength across a specified range of wavelengths. The transmitting unit is constructed so that, within the specified range of wavelengths, discrete wavelengths can be set that correspond to the channel wavelengths. In tuning mode, the controller unit can drive the transmitting unit so that the possible channel wavelengths are scanned through. The controller unit evaluates the reception signal fed to it from the receiving unit for whether abort criteria for tuning mode have been fulfilled or not, wherein the scanning process is continued until the abort criteria are fulfilled.

Abstract: The invention relates to a method for starting up an optical transmission link, in which, after the detection of an interruption, the system is switched into a startup mode in which initially in a original detection state, a query-transmit pulse (P1T,#1) is fed to the transmission link at both end points at given time intervals (TRP); (A) after transmission of a query-transmit pulse (P1T,#1), the following actions are performed at the relevant end point in a “TRANSMITTED” handshake mode: in a loop that is to be passed through n times and at least once (loop counter i, where 1?i?n) and that is begun with the query-transmit pulse (P1T,#1) as the first transmit pulse, after the transmission of a transmit pulse (PiT,#1), it is detected whether a received pulse (PiR,#1) is received within a given time span (T2P); if no received pulse (PiR,#1) is received, then the “TRANSMITTED” handshake mode is ended and the system is returned to the original detection state; if a received pulse (PiR,#1) is received, then the rec

Abstract: A received binary signal (BS) is sampled with different thresholds, the sampling results are integrated and stored. The measured probability distributions or probability density distributions can be used to draw conclusions concerning the signal quality (for example, the bit error rate) and to optimize the system.

Abstract: The invention is directed to a wavelength-division multiplex system and to a method for measuring the individual crosstalk of a specific, of a plurality or of all channels onto a payload channel in wavelength-division multiplex systems. The invention is characterized in that n identification frequencies f(n) (5) with a modulation factor m(n) are modulated onto a payload signal and the current crosstalk is calculated.

Abstract: A ferrule container for holding a plurality of ferrules retaining a multiplicity of optical fibers. The ferrule container includes outer walls defining a plurality of parallel ferrule passageways for holding a plurality of ferrules, and a ferrule holder including a spring holder and a compression spring. The spring holder and one of the outer walls are formed with mutually cooperating structure including a latching nose and a latching nose opening cooperating to orient and hold the spring holder in at least one of the ferrule passageways. A connecting configuration is also provided for connecting a multiplicity of optical fibers including a board housing with a first ferrule and a bushing housing with a second ferrule.

Abstract: A connector for detachable connection of one end region of an optical waveguide to another optical waveguide in a plug-in direction includes a ferrule and a housing. The housing has a holding region for holding and guiding the ferrule such that the ferrule is angularly moveable and guided with respect to the plug-in direction. The housing includes a stress-relief region for firmly connecting the optical waveguide to the housing. In the region between the stress-relief region and the holding region, the connector includes at least one curvature-limiting region for limiting the outward bending of the optical waveguide given an angular displacement of the ferrule with respect to the plug-in direction. The curvature-limiting region limits the movement of the optical waveguide and/or the ferrule. Given the configuration of the curvature-limiting region, outward bending of the optical waveguide beyond a maximum permissible curvature is prevented.