Matches 1 - 50 out of 72 1 2 >


Match Document Document Title
9036998 Long-haul undersea transmission system and fiber  
An undersea long-haul transmission system includes an optical fiber transmission span and a coherent detection and digital signal processing module for providing dispersion compensation. The...
9031413 Underwater optical communication system  
A method of optical underwater communications comprises applying a Fountain code to a plurality of data blocks. A sequence of optical data packets is transmitted through an underwater...
8953944 Systems and methods for establishing an underwater optical communication network  
The systems and methods described herein provide a reconfigurable, long-range, optical modem-based underwater communication network. In particular, the network provides a low power, low cost, and...
8934775 System and method for signaling between elements in an undersea optical communication system and system incorporating the same  
A system for signaling between elements in an undersea optical communication system including a cable signal generator. The signal generator includes line current modulation circuitry configured...
8750707 System and method for establishing secure communications between transceivers in undersea optical communication systems  
In general, a system and method provides secure communications between optical transceivers in an optical communication system. Two or more optical transceivers may be provisioned with one or more...
8682173 Communication using modulated waves applied to an optical fiber  
A particular method includes applying light pulses to an optical fiber and receiving backscattered light at a phase-sensitive optical time domain reflectometry (OTDR) device. The backscattered...
8412048 Surface and sub-surface wave front management  
A method and apparatus are present for managing a transmission of photons. The number of parameters for transmitting the photons as a beam in a liquid are identified using a number of...
8340526 Fiber optic observatory link for medium bandwidth data communication  
Systems and methods for a reconfigurable, long-range, underwater data-communication network are described. The network provides a low cost, low power, lightweight, and easy to deploy underwater...
8295708 High speed underwater data transmission 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...
8233801 Wireless high capacity sub-sea communications system  
A subsea monitoring system.
8045859 High-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...
7953326 Systems 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...
7877024 Infrared signal decode circuit and infrared signal decode method  
According to one embodiment, an infrared signal decode circuit includes: a comparator; a correlation signal generator generating a sum of a first detection signal and a second detection signal as...
7873278 Underwater 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...
7860391 Highly resilient architecture for DWDM networks providing 1+1 optical Channel Protection  
A WDM communication system that includes links traversing substantially inaccessible regions may tolerate multiple failures. In one implementation, a primary link spanning such a region is...
7529020 Optical amplifier module housed in a universal cable joint for an undersea optical transmission system  
An optical amplifier module contains at least one optical amplifier. The module includes an internal housing having an outer dimension substantially equal to an outer dimension of an internal...
7469104 COTDR 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...
7437070 Submarine 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...
7424224 Systems 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...
7415211 Interconnections 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...
7346280 Bi-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...
7326916 Optical 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...
7269353 Branching 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...
7233744 Power 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...
7184670 Telemetry 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...
7133611 Main 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...
7120362 High 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...
7079773 Power 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...
7062169 Systems 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...
7058305 Optical 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...
7034327 Expendable 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...
6995899 Fiber 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...
6934434 Circuit 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...
6895187 Branching 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...
6731879 Submarine 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...
6697575 System 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...
6693561 System 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...
6580541 System 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...
6570541 Systems 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...
6460804 Emergency 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...
6437890 Laser 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...
6380871 System for and method of 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...
6342962 Optical system for transmitting data in soliton format  
A system for transmitting signals in the form of soliton pulses over long distances using an optical conductor minimizes distortion of the transmitted soliton pulses using, in combination, a phase...
6166836 Power switching of optical fibre cable branching units  
PCT No. PCT/GB96/01916 Sec. 371 Date Feb. 6, 1998 Sec. 102(e) Date Feb. 6, 1998 PCT Filed Aug. 7, 1996 PCT Pub. No. WO97/06610 PCT Pub. Date Feb. 20, 1997A branching unit for an optical fibre...
5796504 Fiber-optic telemetry system and method for large arrays of sensors  
A telemetry system for receiving data from large arrays of sensors, in which the sensors are located in an unprotected environment, is implemented using fiber optic components. Laser sources,...
5526157 Optical submarine cable system  
A optical submarine cable system having an optical cable comprised of a main optical fiber pair and a sub optical fiber pair; a branching joint box for separating the sub optical fiber pair into a...
5444441 Electro-optical detection system for reflection free underwater images from aircraft  
An electro-optical detection system for detecting objects 12 embedded within a partially transmitting medium comprises means 20 to receive electro-magnetic radiation in two close spectral channels...
5267070 Underwater IR communication system  
An underwater communications system comprising first and second communications modules which transmit and receive data utilizing infrared radiation. Each module has a transmitter/receiver which...
5231611 Wavelength multiplexed fiber optics resonant ring hydrophone array  
A hydrophone array employing a plurality of laser sources coupled onto a single optical fiber communications link. A matching plurality of optical fiber resonant rings, each having a resonance...
5181135 Optical underwater communications systems employing tunable and fixed frequency laser transmitters  
The present invention uses tunable and fixed frequency lasers as an optical light source in underwater communications systems. This invention provides a high energy, short pulse length laser...

Matches 1 - 50 out of 72 1 2 >