Subcom, LLC

Proteus Digital Health, Inc.

Tyco Electronics Subsea Communications LLC

University System of Maryland

Omnivision Technologies, Inc.

Haifeng Li

Mark Zdeblick

Lara Denise Garrett

Nilay D Jani

Lawrence W Arne

Dmitriy Kovsh

Jonathan Withrington

Yafei Bi

Thomas Marino, Jr

Georg Heinrich Mohs

Massimo Manna

Sheng Zhang

Jizhang Shan

Hongbin Zhang

Todd Thompson

Ekaterina A Golovchenko

Ralph Brian Jander

Stuart M Abbott

Robert C Leichner

Douglas Webb

Stanley Wisniewski, Ii

Ruomei Mu

Yung Jui Chen

Adnan Akhtar

Jeffrey Berkman

Shan Zhong

Robert B Thomas

Chih Poh Pang

Charles Shan

Tony Liu

Muhammad Haris

Jr Thomas Marino

Ii Stanley C Wisniewski

Submarine cable branching units with fiber pair switching configured to allow any number of trunk cable fiber pairs to access the optical spectrum any number of branch cable fiber pairs. Access to a particular branch terminal is not limited to predefined subset of the trunk fiber pairs. This approach allows fewer branch cable fiber pairs to be equipped in each branching unit, reducing system cost, simplifies system planning and provides flexible routing of overall trunk cable capacity.

Submarine cable branching units with fiber pair switching

An undersea fiber optic cable routing architecture including a branching unit coupled to three trunk cables capable of switching individual fibers in each fiber pair within a cable to either of the other two cables. The branching unit comprises a plurality of optical switches and a controller for receiving remote command signals and configuring the optical switches in accordance with the remote command signals.

Pair routing between undersea fiber optic cables

A system and method for efficient optical signal amplification with system monitoring features are provided. For example, an optical repeater may include two different 4-port thin-film gain flattening filters (TF-GFFs), which may be connected to provide a high-loss loop-back (HLLB) path in the optical repeater for system monitoring. The 4-port TF-GFF may have four different ports and may integrate the functionalities of a conventional GFF and a coupler into a single component, thereby increasing power efficiency of the optical repeater.

System, apparatus and method for efficient optical signal amplification with system monitoring features

Pair routing between three undersea fiber optic cables

Disclosed is an undersea power routing device including a first coupling port, a high voltage converter a second coupling port. The first coupling port may be configured to be coupled to an electrical power conductor and fiber optical cables of an undersea branch cable. The high voltage converter may be coupled to the first coupling port and operable to connect to the electrical power conductor via the first coupling port. The high voltage converter may be further operable to convert a high voltage electrical power supplied by the electrical power conductor to an output voltage having a lower voltage electrical power than the high voltage electrical power. The second coupling port may be configured to couple the high voltage converter to an interconnect cable. The high voltage converter, when coupled to the interconnect cable, may be operable to distribute the lower voltage electrical power to the interconnect cable.

Optical switching and electrical powering architecture for undersea mesh networking

In general, a branching configuration used in a wavelength division multiplexed (WDM) optical communication system, consistent with an embodiment of the present disclosure, includes a branch path with two or more optical paths cross-coupled to each other to provide redundant add and/or drop channel wavelengths to a branch terminal on each cross-coupled path. Accordingly, a fault condition affecting some of the cross-coupled optical paths may occur physically downstream from the cross-coupling, e.g., within a subsea umbilical cable or associated termination equipment. However, so long as at least one of the cross-coupled optical paths remains operational, then branch terminal equipment in the branch terminal may continue to receive channel wavelengths associated with a faulted optical path via an operational optical path by virtue of cross-coupling. Thus, the cross-coupled configuration reduces or otherwise eliminates the necessity of allocating spare optical paths within the subsea umbilical cable.

Branching configuration including a cross-coupling arrangement to provide fault tolerance and topside recovery in the event of subsea umbilical assembly failure and system and method including same

A system for obtaining image depth information for at least one object in a scene includes (a) an imaging objective having a first portion for forming a first optical image of the scene, and a second portion for forming a second optical image of the scene, the first portion being different from the second portion, (b) an image sensor for capturing the first and second optical images and generating respective first and second electronic images therefrom, and (c) a processing module for processing the first and second electronic images to determine the depth information. A method for obtaining image depth information for at least one object in a scene includes forming first and second images of the scene, using respective first and second portions of an imaging objective, on a single image sensor, and determining the depth information from a spatial shift between the first and second images.

Systems and methods for obtaining image depth information

Provided is an apparatus, system, and method for stabilizing battery voltage of a battery device while optimizing power delivered to a receiver during communication of a broadcast packet. A logic circuit is configured to receive a broadcast packet having a predetermined number of bits for communication by a controller to a receiver located remotely from the controller, determine a number of cycles in which a sampled battery voltage is either greater than or less than or equal to a nominal battery voltage over a first subset of the predetermined number of bits of the broadcast packet and performs either a tune-up or a tune-down procedure based on the number of cycles counted in which the sampled battery voltage is not equal to the nominal battery voltage for more than one half of a total number of cycles counted.

Apparatus, system, and method to adaptively optimize power dissipation and broadcast power in a power source for a communication device

An optical add-drop network and wavelength allocation for the same wherein the system bandwidth is separated into a dedicated channel band and re-used channel bands, separated by guard bands, to allocate terminal connections to achieve a minimum number of re-used channel bands for the desired terminal connectivities.

Hybrid optical add-drop multiplexing network and wavelength allocation for the same

A system and method for monitoring an optical communication system. The system may include trunk terminals coupled through a trunk path and a branch terminal coupled the trunk path. A monitoring signal routing device within the branch terminal routes a monitoring signal from a branch-drop path to a branch-add path.

System and method for monitoring a branched optical communication system

Apparatus and methods enable robust, reliable control for implantable medical devices, including cardiac pacemakers, defibrillators and cardiac resynchronization devices. Integrated circuits in the devices have minimized interfaces, can derive power from the interface signals, and have high voltage and latch-up protection. A device lead has a power generation circuit and a switching circuit using cascaded PMOS transistors for operating with a stable voltage despite fluctuations in the supplied voltage. The lead has control electronics that provide a very low impedance between an electrode and a lead conductor during most of the duration of a pacing pulse, but during a brief initial portion of the pacing pulse, provide a very high impedance to permit charging up a power supply that is local to the control electronics. A method of stabilizing the external impedance and a system for fault detection and fault recovery for an implantable device are also provided.

Integrated circuit implementation and fault control system, device, and method

Channel power management may be achieved in a branched optical communication system such that uniform loading is provided across branch channels on a branch drop path without passing information signals that are not intended for the branch terminal to the branch drop path. In general, a system and method consistent with the present disclosure reuses one or more loading signals (e.g., noise bands) from the branch add path to maintain uniform loading in the branch drop path of the same branch. The system and method thus prevents trunk channels from being dropped to a branch terminal when those trunk channels are not intended for the branch terminal.

Channel power management in a branched optical communication system

Fault tolerance may be achieved in a branched optical communication system such that a fault in one optical path may not affect optical signals coupled from a healthy optical path. In general, a flexible branching unit is configured, when adding and dropping channels, to select channels from a healthy path and not from the faulty path (e.g., a trunk path or a branch path) to prevent non-uniform channel loading on the trunk path after the branching unit. In this manner, a fault detected on the trunk path may not affect signals from the branch path and a fault detected on the branch path may not affect signals from the trunk path, thereby providing fault tolerance. A flexible branching unit may also be capable of adjusting the number and selection of channels that are added and dropped at the branching unit.

Flexible branching unit and system including the same

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Morganville, NJ, United States of America

Haifeng Li