Abstract: According to examples, a test instrument may determine equalization setting values for electrical signals communicated with optical modules. Particularly, the test instrument may automatically determine the equalization setting values that may result in an optimal signal quality metric of electrical signals communicated with an optical module. The test instrument may generate test signals having a plurality of equalization setting value permutations applied to the test signals and may determine respective signal quality metrics of the test signals returned from the optical module. In other examples, the optical module may generate the test signals and the optical module or the test instrument may determine the respective signal quality metrics of the test signals. In either of these examples, the values of the equalization settings may be set to be applied on electrical signals communicated with the optical module to improve a quality of the electrical signal communications with the optical module.

Abstract: A Mixed Reality (MR) based network test application generates an MR overlay display on a panel of network nodes, with the subset of network nodes to be tested being identified by selectable controls. To test a network node, a corresponding one of the selectable controls is clicked to retrieve the test list, including tests to be conducted on the network node to be tested. The MR overlay display is updated as the network nodes are tested and the test results are recorded for further analysis.

Abstract: An optical filter includes a first optical channel that includes a first mirror and a second mirror that are configured to reflect one or more ranges of an electromagnetic spectrum, and a first portion of a monolithic spacer that is positioned between the first and second mirrors. A second optical channel includes a third mirror and a fourth mirror that are configured to reflect one or more ranges of the electromagnetic spectrum, and a second portion of the monolithic spacer that is positioned between the third and fourth mirrors. A method of manufacturing the optical filter includes forming a first plurality of mirrors; forming, on the first plurality of mirrors, a monolithic spacer; forming a multilevel etch mask on the monolithic spacer using a grayscale lithography procedure; etching the multilevel etch mask and the monolithic spacer; and forming a second plurality of mirrors on the monolithic spacer.

Abstract: An optical device includes an optical sensor, a dye-based optical filter, and a multi-bandpass optical interference filter. The multi-bandpass optical interference filter is configured to pass a first spectral range of visible light, a second spectral range of visible light, and a third spectral range of visible light. The second spectral range does not overlap with the first spectral range, and the third spectral range does not overlap with the first spectral range and the second spectral range. The multi-bandpass optical interference filter is further configured to prevent passage of a fourth spectral range of near-infrared light. An angle shift associated with each spectral range, of the first spectral range, the second spectral range, and the third spectral range, is less than or equal to 2.0% of a center wavelength of the spectral range for angles of incidence between 0 and 30 degrees.

Abstract: In some implementations, a device may receive, from a path monitoring subsystem, an indication of a path risk associated with a path to a resource in a computing environment. The device may transmit, to a client device, digital authorization data based on a threat posture associated with an application in the computing environment, wherein the threat posture is based on the path risk associated with the path, and an access request by the client device to access the resource is based on the digital authorization data.

Abstract: According to examples, an O-RAN FHA may include a packet analyzer including hardware, an impairment generator, and a Parser to receive packet traffic flows outputted by an O-DU) and/or an O-RU. The Parser may parse packets in the received packet traffic flows, determine which of the received packet traffic flows are to receive impairments, and set action bits for the packets in the packet traffic flows that are to receive impairments, in which the action bits denote information indicating types of impairments to be applied to certain ones of the packet traffic flows. The Parser may also output the packet traffic flows with the action bits set for the packets to the packet analyzer and the impairment generator, in which the impairment generator is to generate impairments on the packet traffic flows based on settings of the action bits for the packets in the packet traffic flows.

Abstract: A method of estimating one or more properties of traffic of vehicles passing along roadway segments of a road network includes receiving, from a radio navigation receiver located at each vehicle of a subset of the vehicles, first properties of each of those vehicles, and receiving, from a distributed acoustic sensor, signals representing acoustic vibration caused by the traffic at sensing optical fibers that extend along the roadway segments to determine second properties of the traffic in the road network. The method further includes combining the first properties received from each vehicle in the subset of vehicles with the second properties of the traffic to estimate third properties of the traffic that are used to provide navigation services in the road network.

Abstract: In some implementations, an optical filter assembly includes a first optical filter disposed on a first side of a substrate, wherein the first optical filter is a bandpass filter; and a second optical filter disposed on a second side of the substrate, wherein the second optical filter is associated with a threshold amount of angle shift at a threshold angle of incidence.

Abstract: A testing device provides for testing conditions with radio frequency (RF) interference. The testing device includes a processor, a memory to store machine readable instructions executable by the processor to perform data center testing, an input/output device comprising a camera, a display, a phased array antenna (PAA), and an RF control component, wherein the RF control component is to focus reception of the PAA according to analyzed RF interference and adjust a viewing of the camera synchronously with focusing reception of the PAA.

Abstract: Apparatuses and methods for implementing a real-time Open Radio Access Network (O-RAN) fronthaul analyzer are provided. In one example, a hardware accelerator may receive and timestamp packets in an O-RAN fronthaul packet traffic flow, parse and route the time-stamped packets on different circuit paths to one or more hardware packet analyzers, where the one or more hardware packet analyzers generate analytical timing measurements in real-time using the timestamps on the plural packets. In some examples, the hardware accelerator may include a flow tracker to track packet flows and a parser to parse metadata from packet headers and route individual packets onto appropriate circuit paths. In some examples, the real-time O-RAN fronthaul analyzer may be used for testing an O-RAN fronthaul link for compliance with O-RAN standards.

Abstract: An optical thin film filter may include a first set of filter layers with a first refractive index. The optical thin film filter may include a second set of filter layers with a second refractive index. A first set of thicknesses of the first set of filter layers, a second set of thicknesses of the second set of filter layers, the first refractive index, and the second refractive index may be configured to cause the optical thin film filter to achieve less than a threshold angle shift at a particular wavelength. The optical thin film filter may have an effective refractive index greater than or equal to 95% of a refractive index of a highest refractive index component material of the optical thin film filter.

Abstract: A device may determine a time-of-flight measurement by performing a sample of a sensor based on light received via at least one first spectral filter, wherein the at least one first spectral filter is associated with a spectral range for a time-of-flight measurement; determine that a condition is satisfied with regard to the time-of-flight measurement, wherein the condition relates to an orientation or a position of the sensor or the sensor device relative to a measurement target; trigger a spectrometry measurement to be performed based on determining that the condition is satisfied with regard to the time-of-flight measurement; and perform, based on light received via at least one second spectral filter and by performing a sample of the sensor, the spectrometry measurement for the measurement target based on the condition being satisfied with regard to the time-of-flight measurement.

Abstract: According to examples, an optical fiber monitoring apparatus may include an optical time domain reflectometer (OTDR), and a 1×N optical splitter that is optically connected to the OTDR. For N being greater than one, the 1×N optical splitter may include N test port optical fiber outputs. Further, each test port optical fiber output may be optically connectable to an optical fiber to optically connect the optical fiber to the OTDR.

Abstract: An optical device including a substrate; an optical coating including materials that absorb light in an ultraviolet wavelength and reduces an amount of the light reflected from the optical coating; and an organic functional coating is disclosed. A method of making an optical device a method of increasing durability to ultraviolet light exposure in an optical device are also disclosed.

Abstract: A multispectral sensor device may include a sensor array comprising a plurality of channels and one or more processors to determine that a time-sensitive measurement is to be performed, wherein the time-sensitive measurement is to be performed using data collected by one or more channels of the plurality of channels; cause the data to be collected by a proper subset of channels, of the plurality of channels, wherein the proper subset of channels includes the one or more channels; and determine the time-sensitive measurement based on the data.

Abstract: A wireless signal decoder may include a receiver configured to receive a wireless signal and convert the wireless signal into a digital signal. The wireless signal decoder may further include a processor configured to input the digital signal into a spiking neural network (SNN) and receive at least one predicted data symbol as output from the SNN. The at least one predicted data symbol may include a rate coded output or a latency coded output.

Abstract: A distributed optical fibre sensor to measure one or more parameters of an environment as functions of position along a sensing optical fibre passing through the environment, and determines, measures or calculates an OTDR trace or attenuation profile of a sensing optical fibre in a distributed optical fibre sensor. The OTDR trace is to be monitored to provide an indicia of properties of the sensing optical fibre in order to determine if the performance of the distributed optical fibre sensor in accurately measuring the desired environmental parameters is compromised. This allows adjustment of operation parameters of the distributed optical fibre sensor to maintain the performance at acceptable levels, or to automatically control the distributed optical fibre sensor in order to at least partly compensate for the changing properties.

Abstract: A device may receive training spectral data associated with a manufacturing process that transitions from an unsteady state to a steady state. The device may generate, based on the training spectral data, a plurality of iterations of a support vector machine (SVM) classification model. The device may determine, based on the plurality of iterations of the SVM classification model, a plurality of predicted transition times associated with the manufacturing process. A predicted transition time, of the plurality of predicted transition times, may identify a time, during the manufacturing process, that a corresponding iteration of the SVM classification model predicts that the manufacturing process transitioned from the unsteady state to the steady state. The device may generate, based on the plurality of predicted transition times, a final SVM classification model associated with determining whether the manufacturing process has reached the steady state.

Abstract: In some examples, a tunable dense wavelength division multiplexing (DWDM) optical time domain reflectometer (OTDR) may include a fiber optic link analyzer, executed by at least one hardware processor, to tune a test wavelength of the DWDM OTDR to an effective wavelength of DWDM channels. A non-temperature compensated multiplexer/demultiplexer (Mux/DeMux) located at a distant location, collocated with, or embedded within the DWDM OTDR may selectively connect, based on the test wavelength, the DWDM OTDR to a fiber optic link of a plurality of fiber optic links to test the fiber optic link. A reflective device may be connected to an output of the Mux/DeMux to provide a reference for setting the test wavelength of the DWDM OTDR on a selected channel of the Mux/DeMux.

Abstract: A host controller of a portable testing device enables stochastic scheduling of control messages to reduce data lag and prevent service interruptions. When a thread has a control message to be communicated, the host controller sets the priority of the thread in the control plane to a randomly selected value from a predetermined range. The randomly selected value is higher than the priority that would have been set for the thread under normal priority processing. When the control message is communicated, the priority of the thread is reset to normal priority.