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Class 398/173 - OPTICAL REPEATER SYSTEM


Subclass of Class 398 - Optical communications
Definition: Subject matter including apparatus for receiving a light
No. of patents: 108
Last issue date: 02/28/2012


1      
NumberTitleIssue Date
8126336Optical transmission system and optical repeater
An optical repeater connected to an optical transmission line between an optical network unit having an ONU function on the side of a subscriber and an optical line termination (OLT) on the side of a center includes first electrical/optical conversion means connecte...
02/28/2012
8103172Distributable quantum relay architecture
A distributed quantum relay architecture is disclosed. In one embodiment of this architecture, time and wavelength division multiplexing are used to enable a laser pump pulse, already used to create an initial entangled photon pair, to be distributed to a remote rel...
01/24/2012
7783201Optical repeater device and optical transmission system
An optical repeater device of the present invention comprises: a preamble compensating circuit 53, for taking out a normal data signal from burst signals propagating through a communication transmission path, and for adding a preamble signal before and/or aft...
08/24/2010
7444078Transient control solution for optical networks
An optically amplified wavelength division multiplexing network has the functionality to add/drop channels at the optical add/drop multiplexing (OADM) nodes. The OADM node includes a receiver amplifier, an OADM module, and a transmitter amplifier. Once the OADM node...
10/28/2008
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
7421207Single fiber duplex optical transport
The invention pertains to optical fiber transmission systems, and is particularly relevant to optical transport systems employing optical amplifiers. In particular the invention teaches an apparatus and method that allows cost effective co-directional operation of a...
09/02/2008
7421203Method for transmitting packet in wireless access network based on wavelength identification code scheme
A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and a...
09/02/2008
7394995System and method for a compact optical receiver with wide dynamic range
An optical receiver is disclosed comprising an erbium-doped fiber amplifier (EDFA) that is coupled to a photodiode and transimpedance amplifier without filtering output light signal in the EDFA. Optionally, a clock/data regenerator can be coupled to the electrical o...
07/01/2008
7391974Wavelength division multiplexing optical transmission equipment and method of amplifying optical wavelength division multiplexed signals
Optical signal transmission is improved by reducing the variance in light output level and OSNR by adjusting optical signal intensity and gain tilt, taking SRS influence into consideration. ...
06/24/2008
7369779Regeneration of optical phase modulated signals
A regenerator for restoring the originally encoded optical phase of a differential-phase-shift-keyed signal. In an embodiment, the regenerator simultaneously provides limiting amplification and reduces amplitude noise based on a phase-sensitive optical amplifier tha...
05/06/2008
7356259Optical bypass upgrade configuration
Optical bypass node upgrade configurations are disclosed: (1) a configuration where optical taps are pre-positioned in wavelength division multiplex (WDM) line systems terminating at optical-electrical-optical (OEO) core switching nodes to allow for future upgrade o...
04/08/2008
7352301Method for transmitting a data flow over an optical bus, corresponding system and computer program product
A method for transmitting on an optical connection an input data sequence having first and second logic states, includes encoding the input data sequence prior to transmission on the optical connection, where the encoding minimizes the first logic states in the enco...
04/01/2008
7330662System and method for remote optical digital networking of computing devices
The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ...
02/12/2008
7330303Wavelength division multiplexed optical amplifier
A wavelength division multiplexed optical amplifier, enabling elimination of the problems of oscillation and fluctuation in output due to ASE at the time of a rapid change in the number of input wavelengths, provided with a first-stage optical amplifying unit, secon...
02/12/2008
7315696Gain setting method in wavelength division multiplex transmission equipment
Gain setting of a receiving amplifier, is performed by detecting the necessity of gain setting when a receiving amplifier is turned on, requesting WDM transmission equipment in a preceding station to output ASE light; in a WDM transmission equipment of the preceding...
01/01/2008
7302183Gain tilt compensators and their systems
In the variable gain compensating apparatus, input power of optical amplifiers employed in respective optical repeaters is monitored, and the monitored input power is transferred to a down-stream side by using supervisor (SV) light. In a repeater equipped with a var...
11/27/2007
7295782Control method and optical data transmission path for compensating changes in SRS-induced power exchange
Control method and optical data transmission path having a device for determining the tilting of the spectrum, and having a quick control and slow control for compensating the tilting of the spectrum. ...
11/13/2007
7272325Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio
In the WDM systems, the OSNR and the signal loss among the optical signals are substantially minimized at the receiving terminal to combat the SRS effects. An equal amount of the signal loss is expected for every span in the transmission path so that the optical amp...
09/18/2007
7263292Methods and apparatus for controlling multiple infrared devices
A method and apparatus for controlling a plurality of infrared devices (ICDs) is provided herein. A remote controller is used to generate an optical signal for controlling a plurality of ICDs. The optical signal generated by the remote controller is converted into a...
08/28/2007
7263296Optical transmission system using in-line amplifiers
In a system connecting a transmitter and a receiver using transmission paths and repeaters (in-line amplifiers), red chirping whose α parameter is performed for an optical signal on a transmitting side. Each of the repeaters includes a dispersion-compensator for co...
08/28/2007
7257120Quality of service (QoS) based supervisory network for optical transport systems
Associated with an optical transport system, a packet oriented supervisory network provides differentiated classes of service (CoS) for a plurality of WDM layer applications on diverse nodes such that as soon as a higher priority application or packet arrives, the l...
08/14/2007
7239268Method and apparatus for minimizing the number of power amplifiers required under multiple transmission conditions
The number of power amplifiers required to amplify a plurality of transmission signals is reduced by using non-linear transmission lines (NTL) circuits. In general, a “combining” NTL circuit is used to combine the plurality of transmission signals to form a soli...
07/03/2007
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
7209663Apparatus and method for repeating signal by using wireless optical transmission
A repeating apparatus and method using wireless optical transmission is disclosed. The repeating apparatus includes a donor device for transmitting two identical copies of an optical signal by receiving a RF signal from a base station and electro-optic converting th...
04/24/2007
7203392Optical apparatus for bidirectional optical communication
The present invention is directed to provide a small sized optical apparatus, with low cost and low loss, by realizing a simple structure optimum to bidirectional optical communication. To this end, the present invention comprises three optical multiplexing/demultip...
04/10/2007
7199921Two stage optical amplifier
The invention describes a system of two-stage optical amplifiers adapted for inserting OADM in the mid-stage, and an integrated assembly designed for implementing the amplifiers in a way suitable for forming bi-directional configurations useful in optical networks. ...
04/03/2007
7174108Transmission device and repeater
A transmission system is provided that recognizes occurrence of a fault efficiently so that the workability and quality of service can be improved. An optical amplifier part amplifies an optical main signal. A fault occurrence recognizing part detects a pump light u...
02/06/2007
7158728Optical repeating system and optical amplifying repeater control method
An optical repeating system includes an optical transmitter and a plurality of optical amplifying repeaters. The optical transmitter specifies a part or all of the optical amplifying repeaters, and transmits a supervisory command to the specified optical amplifying ...
01/02/2007
7136586Optical communication system
The invention provides an optical communication system (10) comprising a plurality of mutually interconnected bi-directional optical waveguide rings (20, 30, 40, 50, 60) in which radiation modulated with communication traffic propagates. The radiation ...
11/14/2006
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
7130544Optical repeating system and optical amplifying repeater control method
An optical repeating system includes an optical transmitter and an optical amplifying repeater. The optical transmitter transmits a supervisory command and a control command to the optical amplifying repeater as a first sub-signal. The supervisory command is a comma...
10/31/2006
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
7103276Optical band scanning monitor system and method
A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally, discrepancies between the determined or detected channel inventory and a per...
09/05/2006
7103275Optical transmission system
An optical transmission system capable of monitoring the operating status of Raman-amplifier repeaters even when an optical transmission line is partly disrupted by a fiber failure. An end station sends a monitoring command signal to request a particular repeater to...
09/05/2006
7099594Optical transmission using all-optical regeneration and dispersion techniques
The present invention generally provides optical signal transmission system having an optical signal source, at least one optical signal regenerator in series communication with the optical signal source via an optical signal communications medium, a dispersion modu...
08/29/2006
7099586Reconfigurable multi-channel all-optical regenerators
An all-optical regenerating circuit including a wavelength converter based on a Mach-Zehnder interferometer. The input signal is amplified and the interferometer adjusted to place the input signal across an entire monotonic portion of a sinusoidal transfer function ...
08/29/2006
7099595Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus
The present invention provides an optical wavelength multiplexing transmission apparatus and an optical output control method for an optical wavelength multiplexing transmission apparatus in an optical wavelength multiplexing transmission system using a main signal ...
08/29/2006
7092630Open fiber control for optical transceivers
The present invention implements open fiber control in an optical transceiver. During normal operation, the transceiver transmits signals through a connection to an optical network. When the connection is intact, the total power transmitted can be greater than the e...
08/15/2006
7079779Repeater apparatus, communication equipment, communication system thereof and repeating method
A repeater apparatus (1001) is constituted from infrared transmitter sections (1s, 2s, 3s) and infrared receiver sections (1r, 2r, 3r) as well as connection control sections (...
07/18/2006
7076174Method, device, and system for processing optical signal
The present invention relates to a method for processing an optical signal is provided. An optical signal is input into an optical waveguide structure for providing a nonlinear effect. As a result, the optical signal undergoes chirping induced by the nonlinear effec...
07/11/2006
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