Abstract: An optical transmission device includes a reception unit that receives a first signal light and a second signal light, the first and second lights having power levels that respectively correspond to transmission distances and being transmitted; an amplification unit that amplifies the first signal light and the second signal light in accordance with a signal light having a high power level from among the received first signal light and second signal light; and a transmission unit that performs transmission of the amplified first signal light and second signal light.

Abstract: A bidirectional data communications cable is disclosed. The cable includes first connector, second connector, and cable housing coupled to the first and second connectors. The first connector includes a controller configured to determine whether the first connector is connected to a data source or data sink. If connected to a data source, the controller configures a switch circuit to route a data signal from the data source to an optical modulator for modulating an optical signal for transmission from the first to the second connector via an optical fiber. If connected to a data sink, the controller configures the switch circuit to route a data signal from an optical demodulator to the data sink, the optical demodulator receiving an optical signal modulated with the data signal from the second connector via an optical fiber. The second connector is configured similar to the first connector. The cable housing encloses the optical fibers.

Abstract: Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Systems and methods for determining where to place and how to configure nodes in an optically connected network across a geographic region are provided. Various factors concerning the region may be collected, including, e.g.,: building locations and height, building types, population densities, backbone connection locations, recurring weather factors, geographic elevation, etc. The algorithm may iteratively place nodes based upon the accessible range of a preceding contemplated node position.

Abstract: Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Particularly, systems and methods are provided for aligning nodes in a line-of-sight communication network with their peers. The nodes may be placed and passively aligned with one another as position information is passed between peers. The elevation indicated in the position information may be refined based upon relative barometric pressure readings between peers. In a next phase, isolated networks of nodes may be integrated with the network of nodes contacting the Internet backbone. Finally, routing algorithms may be implemented to address weather effects (e.g., fog) and congestion to optimize network service.

Abstract: Systems and methods for detecting laser transmission bursts in a CATV network.

Abstract: A digital optical transmitter of the present invention comprises an optical modulator, pre-equalization factor computation means for generating transform functions for compensating waveform distortion to occur in the optical modulator, and pre-equalization signal generation means for outputting third data and fourth data after creating them by performing a pre-equalization process on first data and second data. Here, through the transform functions, the first data is added to the fourth data, in a manner depending on a characteristic of the optical modulator, and the second data is added to the third data, in a manner depending on a characteristic of the optical modulator.

Abstract: An integrated apparatus with optical/electrical interfaces and protocol converter on a single silicon substrate. The apparatus includes an optical module comprising one or more modulators respectively coupled with one or more laser devices for producing a first optical signal to an optical interface and one or more photodetectors for detecting a second optical signal from the optical interface to generate a current signal. Additionally, the apparatus includes a transmit lane module coupled between the optical module and an electrical interface to receive a first electric signal from the electrical interface and provide a framing protocol for driving the one or more modulators. Furthermore, the apparatus includes a receive lane module coupled between the optical module and the electrical interface to process the current signal to send a second electric signal to the electrical interface.

Abstract: A vehicle communication system may include a first vehicle node, a second vehicle node, and a fiber optic node connection. The first vehicle node includes an electronic processing unit coupled to a first communication circuit that includes a plurality of self-configuring optical cells. The fiber optic node connection couples the first vehicle node to the second vehicle node using at least some of the self-configuring optical cells. In response to a trigger event, the electronic processing unit is adapted to configure the plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the fiber optic node connection.

Abstract: An optical receiver comprises a package provided with an input window; a polarization-maintaining optical fiber fixable to the input window; a polarization beam splitter, disposed on the package, for inputting light outputted from the polarization-maintaining optical fiber and outputting first output light and second output light having respective polarization directions different from each other; a beam splitter, disposed on the package, for splitting the first output light; a first light-receiving element, optically coupled to the beam splitter, having two light-receiving parts corresponding to two kinds of the output light split by the beam splitter; and a second light-receiving element, disposed on the package, for receiving the second output light.

Abstract: An optical receiver comprises a package provided with an input window; a polarization-maintaining optical fiber fixable to the input window; a polarization beam splitter, disposed on the package, for inputting light outputted from the polarization-maintaining optical fiber and outputting first output light and second output light having respective polarization directions different from each other; a beam splitter, disposed on the package, for splitting the first output light; a first light-receiving element, optically coupled to the beam splitter, having two light-receiving parts corresponding to two kinds of the output light split by the beam splitter; and a second light-receiving element, disposed on the package, for receiving the second output light.

Abstract: A bidirectional optical fiber path includes a primary optical fiber path; a secondary optical fiber path coupled to the primary optical fiber path; an optical coupler coupled to both the primary optical fiber path and the secondary optical fiber path; an optical switch coupled to both the primary optical fiber path and the secondary optical fiber path, the optical switch selecting a path of lower optical loses; an optical cross-bar switch coupled to both the primary optical fiber path and the secondary optical fiber path and located between the optical coupler and the optical switch; a primary upstream light detector coupled to the primary optical path between the optical cross bar switch and the optical switch; a secondary upstream light detector coupled to the secondary optical path between the optical cross bar switch and the optical switch; a primary downstream light detector coupled to the primary optical path between the optical cross bar switch and the optical switch; a secondary downstream light detec

Abstract: The present invention is directed, in part, to a receiver for an infrared light source. The receiver comprises a substantially transparent body; a sensor for receiving infrared light; and a substantially planar first surface on the transparent body. The first surface is configured to direct light from the infrared light source to the sensor. The substantially planar first surface comprises the end of the substantially transparent body. The substantially planar first surface provides an internally reflective surface that directs light into the interior of the substantially transparent body so it will make contact with the sensor.

Abstract: A method for optical network termination (ONT) configuration is provided. The method includes: obtaining, by an optical line terminal (OLT), service types supported by an ONT and management methods available for each of the service types; and negotiating, by the OLT, with the ONT according to the management methods available for each of the service types, so as to determine a management method to be adopted for each of the service types, and configuring the ONT according to the determined management method.

Abstract: A software-defined passive optical network includes a set of optical network terminals, a set of passive optical network ports, and a plurality of splitters. Each of the optical network terminals is connected to a single one of the passive optical network ports through a given one of the splitters, and the network is divided into a plurality of areas, each of which is assigned a given fraction of the passive optical network ports. Passive optical network port utilization is monitored for each of the plurality of areas; for those of the areas determined to have passive optical network port overutilization, the number of the passive optical network ports assigned thereto is increased; and for those of the areas determined to have passive optical network port underutilization, the number of the passive optical network ports assigned thereto is reduced.

Abstract: A transmission device includes: a payload generator configured to generate a payload; and an adding unit configured to add payload information on the payload to the payload, wherein the payload to which the payload information is added is transmitted via a first lane, and management information on the first lane is transmitted via a second lane.

Abstract: Systems for a PLM configured active optical module (AOM) with native and non-native-network element support are provided. A system includes a non-native network element having a first port with a first inventory interface; a first pluggable AOM installed in the first port and coupled to the first inventory interface, where in response to a request to read a standard table entry the first pluggable AOM provides PLM information to the non-native network element in a format complying with a MSA or a standard for the inventory interface; an extended network element having a second port with a second inventory interface; and a second pluggable AOM installed in the second port and coupled to the second inventory interface, where in response to a request to read a non-standard table entry, processing devices provide PLM information to the extended network element in a format for a physical layer management system.

Abstract: A mini-optical line termination (OLT) includes at least one management card for providing control and management functions. A plurality of network cards having a predetermined number of ports are configured to support a predetermined number of subscribers by providing a gigabit passive optical network to the subscribers. At least one network device is coupled to an upstream device and the plurality of network cards. The at least one network device is configured to control the forwarding of data between the upstream device and the subscribers.

Abstract: A light transmitter to transmit multiple light packets, each formatted to include a same message comprising a series of bits, each bit represented as light that is intensity modulated over a bit period at a frequency indicative of the bit. The light packets are transmitted at different start-times to establish different phases, one for each of the light packets, to permit a light receiver to sample each message at a different phase of a fixed sample timeline that is asynchronous to the bit period and the frequency. The light receiver samples the multiple light packets based on the sample timeline, to sample each received message at one of the different sample phases, then constructs a best series of bits based on the multiple demodulated messages.

Abstract: The invention relates to a switch that can be checked, which comprises a housing, an optical conductor (10) arranged in the housing, a deflecting device (16) for the optical conductor, which deflecting device is arranged in the housing, and a triggering device, which initiates a switching process of the switch and actuates the deflecting device at least at times. The deflecting device is designed in such a way that, when the deflecting device is actuated, the optical conductor is deflected in a defined manner such that the bending radius of the optical conductor changes in a defined manner. According to the invention, the switch that can be checked also has a restoring mechanism (34) for the deflecting device, and the restoring mechanism has a restoring delay, which returns the deflecting device to the original position of the deflecting device with a defined delay after the triggering device has been restored.

Abstract: A system and method for processing an input signal includes a non-linear material component for receiving the signal. The non-linear material component is selected to mix the input signal with an optical pump wave to output an optical signal. The system also includes a parametric amplifier coupled to the non-linear material to obtain the optical signal and to amplify the optical signal to generate an amplified signal and an amplified idler which is a conjugate image of the amplified signal. The system also includes a frequency converter, to obtain the amplified signal and the amplified idler from the parametric amplifier and to convert the amplified signal and the amplified idler into a first output and a second output. The system also includes a first spectral sampling and processing apparatus to obtain and process the first output.