This disclosure presents systems to enable downhole bi-directional communications using a long length of fiber optic cable located within or partially within the internal diameter of a set of lower pipe segments and communicatively coupled to one or more upper pipe segments that utilize pipe cable attached to the outside diameter of each of the upper pipe segments. The long length of fiber optic cable and the one or more pipe cables from the upper pipe segments allow for communication coupling between downhole tools and surface equipment and surface computing systems. In some aspects, the pipe cable attached to the upper pipe segments can be protected from wear using clamps, collars, cages, and other protectors. In some aspects, an optical signal generator and modulator, e.g., a light source, can be located downhole proximate the downhole tools, uphole proximate one of the upper pipe segments, or proximate the surface equipment.

Apparatus and methods are disclosed for communicating between distributed automotive sensors, including radar sensors, wherein sensors transmit a synchronization (SYNC) signal, each SYNC signal transmitted via a substantially equal-length fiber optic link corresponding with each sensor. A central node receives the SYNC signals via the fiber optic links corresponding with each of the sensors and determines a master SYNC signal based on the received SYNC signals. The central node then transmits the master SYNC signal via the fiber optic links to the sensors, which receive the master SYNC signal and transmit, via fiber optic link, sensor data synchronized in accordance with the master SYNC signal. The synchronized sensor data are received at the central node and coherently aggregated, and transmitted to a compute node for post-processing. For radar data, the post-processing may include determination of an angular position of an object within detection range of at least two radar sensors.

An optical transmitter includes: a plurality of client ports configured to receive a client signal from an end user device; a plurality of line ports configured to generate a line signal in which the client signal is stored, and transmit the line signal to an optical receiver; a switch configured to connect the plurality of client ports with the plurality of line ports; and a label provider configured to provide the client signal with a label for identifying a transmission destination in the optical receiver.

In a system for converting digital data into a modulated optical signal, an electrically controllable device having M actuating electrodes provides and optical signal that is modulated in response to binary voltages applied to the actuating electrodes. A digital-to-digital converter provides a mapping of input data words to binary actuation vectors for M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter maps each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.

A light source (12) outputs a light (L1). A branching unit (13) branches the light (L1) output from the light source (12) into a first branched light (L2) and a local oscillation light (LO). A modulator (14) modulates the first branched light (L2) to output an optical signal (LS1). A receiver (15) causes the local oscillation light (LO) to interfere with an optical signal (LS2) to receive the optical signal (LS2). An EDFA (16) amplifies the optical signal (LS1) output from the modulator (14). An excitation light source (17) outputs an excitation light (Le) exciting the EDFA (16) to the EDFA (16). An optical attenuator (18) attenuates optical power of the optical signal (LS1) amplified by the EDFA (16). A control unit (11) controls attenuation of the optical signal (LS1) in the optical attenuator (18). The control unit (11) adjusts the attenuation of the optical signal (LS1) and adjusts an output of the excitation light (Le) from the excitation light source (17).

Technologies for dynamically managing resources in disaggregated accelerators include an accelerator. The accelerator includes acceleration circuitry with multiple logic portions, each capable of executing a different workload. Additionally, the accelerator includes communication circuitry to receive a workload to be executed by a logic portion of the accelerator and a dynamic resource allocation logic unit to identify a resource utilization threshold associated with one or more shared resources of the accelerator to be used by a logic portion in the execution of the workload, limit, as a function of the resource utilization threshold, the utilization of the one or more shared resources by the logic portion as the logic portion executes the workload, and subsequently adjust the resource utilization threshold as the workload is executed. Other embodiments are also described and claimed.

The systems, devices, and techniques discussed herein are directed to commissioning network nodes as they are installed in a network. A commissioning agent can be installed in a network node prior to installing the network node in a network. When coupled to a port of an aggregation network node, the network node and/or the aggregation network node can provide an indication of a generic or private Internet protocol (IP) address to a commissioning node. The commissioning node can determine that the network node is to be initialized, and can provide commissioning files to the network node. Accordingly, the network node can configure the network node based in part on the commissioning files, including updating an IP address of the network node to a public address. Thus, network nodes can be commissioned remotely without requiring a separate provisioning channel and without requiring the network node to be configured prior to installation.

Optical communication modules, optical communication cables, and associated methods of manufacturing are provided. An example optical communication module includes a substrate supporting a first optical transceiver and a second optical transceiver. The first optical transceiver includes a first optical transmitter that generates optical signals having a first wavelength and a first optical receiver that receives optical signals having a second wavelength. The second optical transceiver includes a second optical transmitter that generates optical signals having the second wavelength and a second optical receiver that receives optical signals having the first wavelength. One or more lens assemblies coupled with the respective transceivers may be used to direct optical signal generated by and directed to the respective transceivers.

Selection of equalization coefficients to configure a communications link between a receiver in a host system and a transmitter in an optical or electrical communication module is performed by a management entity with access to management registers in the receiver and transmitter. Continuous modification of the selected equalization coefficients is enabled on the communications link after the communications link is established to handle varying operating conditions such as temperature and humidity.

Methods and systems for waveguide delay based equalization summing at single-ended to differential converters in optical communication are disclosed and may include: in an photonic circuit including a directional coupler, photodetectors, and a gain stage, receiving an input optical signal; splitting the input optical signal into first and second optical signals using the directional coupler; generating a first current from the first optical signal using a first photodetector; communicating the first voltage to a first input of the gain stage; generating a second current from the second optical signal using a second photodetector; communicating the second voltage to a second input of the gain stage; and generating a differential output voltage based on the first and second currents using the gain stage.