Abstract: A test apparatus has at least one optical source, a high-speed photodetector, a microcontroller or processor, and electrical circuitry to power and drive the optical source, high-speed photodetector, and microcontroller or processor. The apparatus measures the frequency response and optical path length of a multimode optical fiber under test, utilizes a reference VCSEL spatial spectral launch condition and modal-chromatic dispersion interaction data to estimate the channels total modal-chromatic bandwidth of the fiber under test, and computes and presents the estimated maximum data rate the fiber under test can support.

Abstract: An optical fabric includes a plurality of optical waveguides. The fabric has Np input ports with index, X, and Np output ports with index, Y. An interconnection map between input ports, index X, and output ports, index Y is provided by a non-linear function Y=F(X) that satisfies reversible properties given by, F(Y)=X or, X=F(F(X)) or F?1(X)=F(X). The fabric provides full connectivity from any group of M1 adjacent input ports to any group of M2 adjacent output ports where at least one number, M1 or M2 is an even number, and wherein M1×M2=Np.

Abstract: An apparatus having input and output ports using a plurality of optical connector adapters, wherein the fiber connections can follow a specific mesh pattern has a plurality of fibers inside the apparatus. The fibers pass through at least one mandrel and are designed to produce a leakage in the transmitted light from each fiber of least ?30 dBm, wherein the fiber buffer of fibers around the mandrel are partially stripped in at least one section. The apparatus also has an imaging system consisting of at least a lens, camera sensor and an optical filter are placed in proximity to the fiber striped section wherein the optical filter has spectral properties tuned or partially tuned to the operational wavelength of the network and the optical filter is placed in the light path before the camera sensor.

Abstract: A low-latency free-space optical data communication channel with automatic alignment function has an optical channel, collimators, high reflective screens, and cameras. The optical channel can have two optical lenses designed to facilitate the transmission of an optical signal. The collimators can be integrated with optical fibers and precisely positioned at a focal point of the two optical lenses. Reflective screens, films or tapes encircle both transmitting and receiving lenses. Cameras at each transmitting and receiving terminal are positioned to monitor the optical signal's impact on a lens surface or a high-reflective screen on the opposite side. The cameras use at least one lens to get focused image on a camera sensor and records the optical beam spot impacting the opposite side. Corresponding LED(s) aligned with the lens position on the opposite side allow the computation of the disparity between the optical signal and the lens positioned on the opposite side.

Abstract: A hybrid cable designed for providing data communications via both optical fiber and copper wires is provided. The hybrid cable includes internal features for designing a location of the optical fiber and the copper wires relative to each other to optimize cabling characteristics of the hybrid cable.

Abstract: An air-gap HCF connector termination method and connector assembly for factory and field connector assembly termination for patch cables and trunk cables made from HCF, where in multitude of mechanisms can facilitate air-gap between the first and second HCF fiber end-faces, comprising preparing the HCF end-faces using appropriate cleaving methods including mechanical, ultrasonic and laser cleaving, such that the air-gap separation between first and second HCF's can be anywhere between 0.5-100 microns, where reflection at the connector interface is low with RL>35 dB, due to HCF propagation mode effective index matching with index of air.

Abstract: A multiport passive photonic light circuit chip has multiple waveguides written in at least two layers on a glass substrate. Some waveguides connect transmitting and receiving ports of an optical channel, some waveguides redirect a fraction of optical signals to some other receiving ports, and waveguides have circular cross-sectional shapes wherein a refractive index contrast is in the range of 0.2% to 2%.

Abstract: A solution is disclosed for providing fault-managed power systems using optical elements. The fault-managed power systems are able to provide safe and efficient power delivery utilizing optical fiber links to improve signal integrity, security, and reach of the system.

Abstract: A solution is disclosed for providing fault-managed power systems using hybrid connectivity that includes both conductive and optical elements. The fault-managed power systems are able to provide safe and efficient power delivery utilizing optical fiber links to improve signal integrity, security, and reach of the system.

Abstract: A patch cord for transmitting between a single mode fiber (SMF) and a multi-mode fiber (MMFs) has a MMF, SMF, and a photonic crystal fiber (PCF) with a hollow core placed between the SMF and MMF. A mode field diameter (MFD) of the PCF hollow core section is in the range of 16 to 19 microns, the length of the PCF is between 1 cm to 10 cm, the MMF has 50±2 microns core diameter, the SMF has a 6-9 microns core diameter, and the coupling between the PCF mode to the MMF fundamental mode is maximized.

Abstract: An apparatus having input and output ports using a plurality of optical connector adapters, wherein the fiber connections can follow a specific mesh pattern has a plurality of fibers inside the apparatus. The fibers pass through at least one mandrel and are designed to produce a leakage in the transmitted light from each fiber of least ?30 dBm, wherein the fiber buffer of fibers around the mandrel are partially stripped in at least one section. The apparatus also has an imaging system consisting of at least a lens, camera sensor and an optical filter are placed in proximity to the fiber striped section wherein the optical filter has spectral properties tuned or partially tuned to the operational wavelength of the network and the optical filter is placed in the light path before the camera sensor.

Abstract: A method and apparatus for repurposing a communications zone enclosure including providing an input power source within a telecommunications room, providing circuitry configured to split the power of the input source into a plurality of channels, using preexisting twisted pair communication cables to transmit power from the plurality of channels to the zone enclosure, and recombining power the power into a single output power source.

Abstract: Methods for estimating the Effective Modal Bandwidth (EMB) of laser optimized Multimode Fiber (MMF) at a specified wavelength, ?S, based on the measured EMB at a first reference measurement wavelength, ?M. In these methods the Differential Mode Delay (DMD) of a MMF is measured and the Effective Modal Bandwidth (EMB) is computed at a first measurement wavelength. By extracting signal features such as centroids, peak power, pulse widths, and skews, as described in this disclosure, the EMB can be estimated at a second specified wavelength with different degrees of accuracy. The first method estimates the EMB at the second specified wavelength based on measurements at the reference wavelength. The second method predicts if the EMB at the second specified wavelength is equal or greater than a specified bandwidth limit.

Abstract: An optical interconnection assembly for a Spine-and-Leaf network is disclosed. The optical interconnection assembly has Spine multi-fiber optical connectors and Leaf multi-fiber optical connectors. The Spine optical connectors of the interconnection assembly are optically connected to multi-fiber connectors of Spine switches via Spine patch cords. The leaf multi-fiber connectors are optically connected to Leaf multi-fiber connectors of Leaf switches via Leaf patch cords. An array of simplex fiber optic cables in said interconnection assembly serve to optically connect every Spine multi-fiber connector to every Leaf multi-fiber connector so that every Spine switch is optically connected to every Leaf switch. The optical interconnection assembly facilitates network Spine-and-Leaf interconnections and the ability to scale-out the network by installing additional assemblies, Leaf switches, and Spine switches.

Abstract: An apparatus having at least two user interfacing I/O data communication transceivers. The I/O transceiver utilizes either electrical or optical signaling based on user preference with each I/O transceiver being electrically connected back-to-back to a WDM transceiver in the apparatus. The optical media dependent interface of each WDM transceiver has a uniquely specified wavelength and optical ports of the WDM transceivers are connected to the corresponding wavelength ports of a WDM device. The discrete optical wavelengths are multiplexed or demultiplex onto a duplex pair of optical fibers by means of the WDM device in order to convert the interfacing I/O signals to the appropriate optical wavelengths to facilitate pre-configured WDM optical communications.

Abstract: A patch cord for transmitting between a single mode fiber (SMF) and a multi-mode fiber (MMFs) has a MMF, SMF, and a photonic crystal fiber (PCF) with a hollow core placed between the SMF and MMF. A mode field diameter (MFD) of the PCF hollow core section is in the range of 16 to 19 microns, the length of the PCF is between 1 cm to 10 cm, the MMF has 50±2 microns core diameter, the SMF has a 6-9 microns core diameter, and the coupling between the PCF mode to the MMF fundamental mode is maximized.

Abstract: A multiport passive photonic light circuit chip has multiple waveguides written in at least two layers on a glass substrate. Some waveguides connect transmitting and receiving ports of an optical channel, some waveguides redirect a fraction of optical signals to some other receiving ports, and waveguides have circular cross-sectional shapes wherein a refractive index contrast is in the range of 0.2% to 2%.

Abstract: Apparatuses and methods are provided that relate to the improvement of the interconnection density and cable management of data center fiber optic networks by including a cassette module having a multilayer interface configuration. The cassette modules utilizes depth within an internal space to accomplish the multilayer interface configuration, which results in improved connector density, while maintaining simple connection schemes.

Abstract: An apparatus and method of inspection are provided that inspects the end-face of two or more fiber optic connectors simultaneously without the need to move a probe from one end-face to another end-face and inspecting them one by one.

Abstract: An optical interconnection assembly and method for the deployment and scaling of optical networks employing Spine-and-Leaf architecture has Spine multi-fiber optical connectors and Leaf multi-fiber optical connectors. The Spine optical connectors of the interconnection assembly are optically connected to multi-fiber connectors of Spine switches via Spine patch cords. The leaf multi-fiber connectors are optically connected to Leaf multi-fiber connectors of Leaf switches via Leaf patch cords. A plurality of fiber optic cables in said interconnection assembly serves to optically connect every Spine multi-fiber connector to every Leaf multi-fiber connector so that every Spine switch is optically connected to every Leaf switch. The optical interconnection assembly facilitates the deployment of network Spine-and-Leaf interconnections and the ability to scale out the network by using simplified methods described in this disclosure.