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Class 398/104 - UNDERWATER


Subclass of Class 398 - Optical communications
Definition: Subject matter wherein optical communication is performed
No. of patents: 65
Last issue date: 10/25/2011


1    
NumberTitleIssue Date
8045859High-speed underwater data transmission system and method
An underwater data transmission system including arrays of nano-meter scaled photon emitters and sensors on an outer surface of an underwater platform. For the emitters, a laser is pulsed to correlate with data packets, providing a beam of photons at a prescribed fr...
10/25/2011
7953326Systems and methods for underwater optical communication
The systems and methods of the invention provide for improved underwater communication systems. In particular, the systems and methods of the invention provide for improved underwater optical modems including optical transmitters and optical receivers that allow omn...
05/31/2011
7873278Underwater optical communications system and method
An underwater optical communications system and method particularly suitable for use in communications with automated equipment. A series of light beacons are dispersed throughout a communications zone. The light beacons are each provided with a plurality of light-e...
01/18/2011
7469104COTDR arrangement for an undersea optical transmission system comprising multiple cable stations and multiple transmission segments
A land-based cable station is provided for interfacing with first and second undersea transmission segments of an undersea optical transmission system. At least one first bypass optical transmission path is provided for selectively coupling reflectometry probe signa...
12/23/2008
7437070Submarine observation apparatus and submarine observation system
In each of a plurality of submarine observation apparatus (1 to n), a branching unit (63) branches fixed-wavelength light (λ1) from an incoming wavelength-multiplexed light signal. An observation signal modulating unit (64) modulates the...
10/14/2008
7424224Systems and methods for placing line terminating equipment of optical communication systems in customer points of presence
A system for delivering optical signals to and from an undersea optical cable may include a cable landing station connected to the undersea optical cable and configured to convey a wavelength division multiplexed optical signal from the undersea optical cable. The s...
09/09/2008
7415211Interconnections and protection between optical communications networks
An optical communications system including a submarine optical communications system, a landing station associated with the submarine optical communications system, a terrestrial optical communications system, a point of presence associated with the terrestrial opti...
08/19/2008
7365349EUV light source collector lifetime improvements
An apparatus and method for cleaning a plasma source material compound from a plasma produced EUV light source collector optic which may comprise reacting the plasma source material compound with hydrogen to form a hydride of the plasma source material from the plas...
04/29/2008
7346280Bi-directional long haul/ultra long haul optical communication link
A bi-directional configuration is employed to implement a hybrid ultra long haul (ULH)/long haul (LH) optical transmission system. The link carries ULH channels and LH channels in opposite directions in different bands. Raman amplification is employed for the ULH ba...
03/18/2008
7336908Optical transmission system using optical signal processing in terminals for improved system performance
An optical communication system configured to operate with optical signals at lower signal to noise ratios than previously contemplated. The communication system includes a receiver having an optical pre-processor coupled between a demultiplexer and a detector. The ...
02/26/2008
7326916Optical submarine transmission system
A main line cable and a backup line cable are laid in a land portion in different routes. A land terminal station includes a break detecting unit that detects a break of the main line cable, and a path switching unit that switches a transmission path to the backup l...
02/05/2008
7317179Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate
Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned to receive laser light from the lens array and produce a respective el...
01/08/2008
7269353Branching unit for an optical transmission system
A branching unit for an optical transmission system, an optical transmission system and a method of operation of said branching unit (30) is disclosed having a first branch (38) and a second branch (40), each connected to a main branch (42
09/11/2007
7245046Internal power re-routing by reverse powering to overcome fault scenarios in submarine cable systems
System and method for re-routing internal power for reducing voltage requirements of a submarine transmission system. A power supply supplies power to a bridge rectifier circuit (10) the latter biasing a plurality of Zener diodes (11; 12; 13; 14; 15; 16
07/17/2007
7233744Power feed arrangement using aggregate segments
A power feed arrangement for aggregate segments of a communications system is disclosed. In embodiments of the invention, cables are used to communicatively connect a number of landmasses, where the cables also serve to carry electrical power to devices connected al...
06/19/2007
7217941Systems and methods for deflecting plasma-generated ions to prevent the ions from reaching an internal component of an EUV light source
A system is disclosed for protecting an internal EUV light source component from ions generated at a plasma formation site. In one aspect, the system may comprise a plurality of foil plates and an arrangement for generating a magnetic field to deflect ions into one ...
05/15/2007
7203216Timing control for two-chamber gas discharge laser system
Feedback timing control equipment and process for an injection seeded modular gas discharge laser. A preferred embodiment is a system capable of producing high quality pulsed laser beams at pulse rates of about 4,000 Hz or greater and at pulse energies of about 5 to...
04/10/2007
7203429Optical transmission system using optical signal processing in terminals for improved system performance
An optical communication system configured to operate with optical signals at lower signal to noise ratios than previously contemplated. The communication system includes a receiver having an optical pre-processor coupled between a demultiplexer and a detector. The ...
04/10/2007
7184670Telemetry system and method for acoustic arrays
A telemetry system includes a plurality of acoustic sensors for receiving acoustic information and generating analog signals based on the received acoustic information. A first plurality of subsystems is coupled to at least a subset of the plurality of acoustic sens...
02/27/2007
7180083EUV light source collector erosion mitigation
An EUV light source collector erosion mitigation system and method is disclosed which may comprise a collector comprising a multilayered mirror collector comprising a collector outer surface composed of a capping material subject to removal due to a removing interac...
02/20/2007
7171125Power feed arrangement using aggregate segments
A power feed arrangement for aggregate segments of a communications system is disclosed. In embodiments of the invention, cables are used to communicatively connect a number of landmasses, where the cables also serve to carry electrical power to devices connected al...
01/30/2007
7141806EUV light source collector erosion mitigation
An EUV light source collector erosion mitigation method and apparatus for a collector comprising a multilayered mirror collector comprising a collector outer surface composed of a capping material subject to removal due to a removing interaction with materials creat...
11/28/2006
7133611Main signal controlling apparatus and method in a WDM optical communications system
If a repeater supervisory control (SV), a pre-emphasis automatic adjustment (PE), a receiving side threshold value automatic adjustment (Vth), a transmitting side dispersion compensation value setting (VDC(T)), and a receiving side dispersion compensation value sett...
11/07/2006
7120362High power repeaters for Raman amplified, wave division multiplexed optical communication systems
High power repeaters for use in amplifying optical data signals transmitted through undersea fiber optic cables are disclosed. Raman amplification schemes using 100 or more pump lasers are integrated into industry standard sized pressure vessels for amplifying optic...
10/10/2006
7113706Systems and methods for placing line terminating equipment of optical communication systems in customer points of presence
A system for delivering optical signals to and from an undersea optical cable may include a cable landing station connected to the undersea optical cable and configured to convey a wavelength division multiplexed optical signal from the undersea optical cable. The s...
09/26/2006
7085456Electrical and optical isolating unit for an undersea branching unit
An optical and electrical isolating unit for use with a branching unit located in an undersea optical transmission system is provided. The unit includes a pressure vessel adapted for use in an undersea environment. First, second and third ports are located in the pr...
08/01/2006
7079773Power feeding for an optical transmission system
A method and an apparatus for optical transmission line power feed interference compensation for compensating for an electrical interference signal in a power feed conductor (12; 52) and in an associated second conductor (14; 54). The interference sign...
07/18/2006
7062169Systems and methods for compensating for signal transients
A system compensates for the presence of power transients. The system receives a data signal and detects the occurrence of a power transient. The system generates a threshold signal based on the detected power transient and determines a value of the data signal base...
06/13/2006
7058305Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system
An optical submarine communication system has a land cable connected to a terminal apparatus which is installed on land near the seashore for transmitting an optical signal and electric power. The land cable is connected to an optical submarine cable through a beach...
06/06/2006
7034327Expendable oceanographic digital communications system
A bathyphotometer system is described for detecting photoluminescent signals excited by a grid disposed in a marine vehicle. The system uses photodiodes to convert the optical signals into electrical signals which are sampled, integrated and coupled to output termin...
04/25/2006
6995899Fiber optic amplifier for oilfield applications
A system of transmitting optical signals during a subsea oilfield operations comprises a subsea fiber optical signal carrier. The fiber optical signal carrier includes a first optical fiber having a least one doped section that acts as an amplifier to optical signal...
02/07/2006
6934434Circuit for switching optical paths
First to sixth optical switches 17 to 22 are provided: in event of failure on the part of a third input/output port 33, only the first and second optical switches 17 and 18 turn ON; in the event of failure on the part of a second i...
08/23/2005
6895187Branching unit and system for underwater optical communication
A branching unit, for use in optical communication systems, has three branches A, B and C each including a connection for a power feed and several inputs/outputs for optical fibers. Optical switches are provided for selectively coupling inputs/outputs of different b...
05/17/2005
6731879Submarine communications system and landing-stage therefor
To diminish the risk of interruption of traffic in a submarine optical cable system in the region of the shore where damage is most likely to occur, the landing-stage of the system has duplicated spaced-apart cables between a submerged branching unit and an onshore ...
05/04/2004
6697575System and method for increasing capacity of long-haul optical transmission systems
A method of increasing capacity on a long-haul undersea cable system having at least one optical fiber, said method comprising interleaving counter-propagating forward-propagating and backward-propagating signals in forward and backward channels on a comm...
02/24/2004
6693561System for and method of wide searching for targets in a marine environment
An above-the-water system for and method of finding targets, both animate and inanimate, in a marine environment, especially by determining the distance and depth of targets at, above or below the surface of, the water. An optical transmitter transmits in...
02/17/2004
6580541System and method for transmitting information for amphibious traveling vehicle and system for controlling operation of the vehicle
In order to allow an amphibious traveling vehicle to safely travel along rails on the land and in the water, or underwater even off the rails, a system for transmitting information of amphibious traveling vehicle comprising a traveling vehicle-side contro...
06/17/2003
6570541Systems and methods for wirelessly projecting power using multiple in-phase current loops
First and second spaced apart in-phase current loops at least partially overlap in the axial direction. The first and second current loops may be first and second arrays of in-phase current loops that are spaced apart and at least partially overlap in the...
05/27/2003
6460804Emergency vision apparatus
An emergency supplementary vision device comprises a collapsible tube made of airtight material and having an expanded form and a compact stowed form; first and second clear members disposed at respective first and second ends of the tube to enable the us...
10/08/2002
6437890Laser communications link
A laser communications link provides a downlink laser beam having a wavelength suitable for transmission through water transmitted from an aircraft or satellite to a submerged vehicle. An uplink laser beam having a wavelength that is visually undetectable...
08/20/2002
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