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US20130121700 METHOD, APPARATUS AND SYSTEM FOR TRANSMITTING SERVICE DATA ON OPTICAL TRANSPORT NETWORK  
The embodiments of the present disclosure provide a method, an apparatus, and a system for transmitting service data on an optical transport network. The method includes: mapping the service data...
US20100021166 Spectrally Efficient Parallel Optical WDM Channels for Long-Haul MAN and WAN Optical Networks  
Techniques, apparatus and systems for optical WDM communications that use spectrally efficient parallel optical WDM channels for WAN and MAN networks.
US20120251098 Method, apparatus and system for high-speed transmission on fiber optic channel  
Multi-carrier modulation fiber optic systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal....
US20090274464 METHOD, SYSTEM AND DEVICE FOR SETTING UP WAVELENGTH CONNECTION  
A method, a system, and a device for setting up a wavelength connection are disclosed herein. The method includes obtaining a wavelength path from a source network node to a destination network...
US20130209106 OPTICAL TRANSMISSION SYSTEM, MULTI-CORE OPTICAL FIBER, AND METHOD OF MANUFACTURING MULTI-CORE OPTICAL FIBER  
An optical transmission system includes: a multi-core optical fiber having a plurality of core portions. Signal light beams having wavelengths different from each other are caused to be input to...
US20140133862 RECEIVER OPTICAL MODULE INSTALLING OPTICAL DEMULTIPLEXER AND METHOD TO PRODUCE OPTICAL DEMULTIPLEXER  
A receiver optical module to receive a wavelength multiplexed light is disclosed. The optical module installs an optical demultiplexer to demultiplex the wavelength multiplexed light. The optical...
US20080304830 PASSIVE OPTICAL NETWORK, EQUIPMENT AND METHOD FOR SUPPORTING MULTICAST SERVICE  
A Wavelength Division Multiplexed Passive Optical Network (WDM-PON), an Optical Line Terminal, an Optical Network Unit, a multiplexer/demultiplexer, and a method for realizing multicast service in...
US20110200327 OPTICAL SIGNAL IDENTIFYING OR DETECTING METHOD AND APPARATUS, AND IDENTIFYING AND DETECTING SYSTEM  
An optical signal identifying method and apparatus are provided. The optical signal identifying method includes: assigning signal IDs with different frequencies to optical signals with different...
US20110135309 WAVELENGTH DIVISION MULTIPLEXING-PASSIVE OPTICAL NETWORK (WDM-PON)  
Provided is an Optical Line Terminal (OLT). The OLT may include a first Wavelength division multiplexer/demultiplexer (WDM MUX/DeMUX) to perform a wavelength demultiplexing on seed light received...
US20090169200 METHOD, SYSTEM AND APPARATUS FOR PROTECTING WAVELENGTH DIVISION MULTIPLEX TRANSMISSION  
A method for protecting WDM transmission. On the first transmission direction, the first node implements service transmission to the second node by selecting one from the two transmission paths...
US20090067843 Optical Wavelength-Division-Multiplexed (WDM) Comb Generator Using a Single Laser  
Apparatus, systems and techniques that use a single laser to generate desired optical WDM comb frequencies.
US20080279557 WDM-PON SYSTEM USING SELF-INJECTION LOCKING, OPTICAL LINE TERMINAL THEREOF, AND DATA TRANSMISSION METHOD  
Disclosed are a wavelength division multiplexing-passive optical network (WDM-PON) system using self-injection locking, an optical line terminal thereof, and a data transmission method. A...
US20100061730 OPTICAL TRANSMITTING OR RECEIVING UNIT INTEGRATING A PLURALITY OF OPTICAL DEVICES EACH HAVING A SPECIFIC WAVELENGTH DIFFERENT FROM EACH OTHER  
An optical unit is disclosed, in which the optical unit provides four optical devices each of which corresponds to a specific wavelength different from each other. In the transmitter unit, the...
US20050175344 System and apparatus for a carrier class WDM PON accommodating multiple services or protocols  
A Passive Optical Network (PON) is provided with capability for multiple protocols and service suppliers by employing Wavelength Division Multiplexer (WDM) elements in combination with optical...
US20100189440 Methods and Systems for Transmitting Data in Scalable Passive Optical Networks  
Systems and methods according to these exemplary embodiments provide for methods and systems that enable decoupling of medium access control (MAC) functions from other optical transceiver...
US20090092394 Orthogonal Frequency Division Multiple Access Based Virtual Passive Optical Network (VPON)  
Various types of passive optical networks operate simultaneously in one passive optical network system comprising an optical line terminal, a passive remote node, and multiple optical network...
US20170180074 OPTICAL LINE TERMINAL ARRANGEMENT, APPARATUS AND METHODS  
A wavelength division multiplexed optical communication system includes a plurality of optical line terminals which may be part of separate in service networks, each having a line interface and an...
US20150180606 OPTICAL LINE TERMINAL ARRANGEMENT, APPARATUS AND METHODS  
A wavelength division multiplexed optical communication system includes a plurality of optical line terminals which may be part of separate in service networks, each having a line interface and an...
US20140056583 SYMBOL ALIGNMENT IN HIGH SPEED OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING TRANSMISSION SYSTEMS  
The present invention discloses a method for symbol synchronisation in high speed optical orthogonal frequency division multiplexing (OOFDM) transmission systems via coding the electrical OFDM...
US20080304829 WAVELENGTH MULTIPLEX TRANSMISSION APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM  
A wavelength multiplex transmission apparatus including a divided wavelength band unit which controls signal light in each of a plurality of divided wavelength bands into which a transmission...
US20070071443 Signal multiplexing apparatus and stuff controlling method therein  
A signal multiplexing apparatus has an OPU/ODU processing unit putting a local protocol signal into an OPU/ODU signal, an ODTU processing unit generating an ODTU signal from the OPU/ODU signal, a...
US20110268446 PROVIDING DIGITAL DATA SERVICES IN OPTICAL FIBER-BASED DISTRIBUTED RADIO FREQUENCY (RF) COMMUNICATIONS SYSTEMS, AND RELATED COMPONENTS AND METHODS  
Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and...
US20110217045 CROSSTALK MITIGATION IN OPTICAL TRANSCEIVERS  
The invention relates to a method of improving the performance of optical receivers within optical transceivers by compensating for crosstalk, both optical and electrical. Optical crosstalk may...
US20120087668 METHOD AND DEVICE FOR GENERATING AND RECEIVING OOFDM SIGNAL, AND WAVELENGTH-DIVISION MULTIPLEXING SYSTEM  
Embodiments of the present invention relate to the field of communications, and in particular, disclose a method and a device for generating and receiving an OOFDM signal, and a...
US20070242592 Three-dimensional optical memory  
The present invention is directed to a three-dimensional memory apparatus for storing information in a volume comprising of an active medium. The active medium is capable of changing from a first...
US20140064733 SELF-INJECTION LASER, WAVE DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL  
Embodiments of the present disclosure provide a self-injection laser, a WDM-PON system and an optical line terminal. The self-injection laser includes a gain medium, an array waveguide grating...
US20090162059 WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM  
A wavelength division multiplexing transmission system in which a first channel using an intensity modulation scheme and a second channel using a phase modulation scheme are present includes a...
US20130343758 WAVELENGTH DIVISION MULTIPLEXER, OPTICAL SWITCH DEVICE AND CONTROL METHOD OF OPTICAL SWITCH  
The present invention provides a WDM which includes three ports, the three ports each include an optical fiber array and a micro lens array matching the optical fiber array; an optical signal is...
US20150229429 Multiplexer with Non-Interleaved Channel Plan  
An apparatus comprises a plurality of transmitters configured to transmit waves at a plurality of wavelengths, and a multiplexer coupled to the transmitters, comprising first ports and second...
US20050276605 Method of upgrading an optical transmission network, an optical transmission network, and associated optical transmission nodes  
The invention relates to methods of upgrading optical transmission networks, upgradeable optical transmission networks, and upgradeable optical transmission nodes. The node of the invention is an...
US20140321856 WAVELENGTH MULTIPLEXED TRANSMITTER OPTICAL MODULE  
A transmitter optical module is disclosed. The transmitter optical module has optical sources each emitting optical beam with a specific wavelength different from others and lenses corresponding...
US20090097847 OPTICAL MODULE  
An optical module comprising: a submount provided on a CAN stem; light-emitting device and a light-receiving device; a CAN cap or package; and an optical multiplexer/demultiplexer having a...
US20060233550 Wavelength division multiplexed light source and passive optical network using the same  
A wavelength division multiplexed light source for a passive optical network using the same includes broadband light sources arranged at a desired interval on a wavelength axis, so as to output...
US20140147120 Grooming Multicast Traffic in Flexible Optical Wavelength Division Multiplexing WDM Networks  
The present invention is directed to a solution for grooming multicast traffic in flexible optical wavelength division multiplexing WDM networks. The invention includes a solution for grooming...
US20130051803 OPTICAL MULTIPLEXING APPARATUS AND OPTICAL NETWORK SYSTEM  
There is provided an optical multiplexing apparatus including an extraction unit configured to extract a pilot signal multiplexed on light propagated on a transmission line, a generator configured...
US20100129077 TECHNIQUES FOR IMPLEMENTING A DUAL ARRAY WAVEGUIDE FILTER FOR A WAVELENGTH DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORK  
Techniques for implementing a dual array waveguide filter for a wavelength division multiplexed passive optical network (WDM-PON) are disclosed. In one particular exemplary embodiment, the...
US20070166038 Wavelength-division multiplexed optical transmission system  
A wavelength-division multiplexed optical transmission system to keep the correlation of data patterns among wavelength channels to a low level, assuring a stable transmitting quality. The...
US20100046950 SEEDING WDM PON SYSTEM BASED ON QUANTUM DOT MULTI-WAVELENGTH LASER SOURCE  
A seed light source for use in Wavelength Division Multiplexed Passive Optical Network (WDM-PON) includes a multi-channel quantum dot laser for generating a multi-channel seed light comprising a...
US20090324224 System, method and apparatus to suppress inter-channel nonlinearities in WDM systems with coherent detection  
For optical communications, apparatus and methods are provided for performing dispersion compensation management that suppresses intra-channel nonlinearities, inter-channel cross-phase modulation...
US20090092392 VIRTUAL I/Q MULTIPLEXING IN OPTICAL CODE DIVISION FOR SECURE LOCAL AREA OFDM  
A system and method for virtual I/Q multiplexing in optical code division for secure local area OFDM includes encoding a wide spectrum signal, which includes a plurality of spectral bins, to...
US20140193154 SUBCHANNEL SECURITY AT THE OPTICAL LAYER  
The present invention includes various novel systems and methods for dynamically modifying WDM transmission and receive steps (individually or in combination), including encoding client signals,...
US20070212073 Apparatus, System And Method For Optical Signal Transmission  
According to the present invention, an apparatus, a system and a method for transmitting a FM batch converted signal and another signal on the same optical fiber can be provided. For example, a...
US20160204868 Summation of Parallel Modulated Signals of Different Wavelengths  
An optical transmitter is provided. The optical transmitter includes a first optical modulator configured to modulate a first optical carrier signal having a first wavelength and a first power...
US20160197698 ALL-OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) DEMULTIPLEXER  
The invention relates to an all-optical demultiplexer for an optical orthogonal frequency division multiplexing (OFDM) signal having a centre wavelength. The OFDM signal comprises a plurality of...
US20130330080 Wavelength Division Multiplexing/De-Multiplexing Optical Assembly for High Speed Parallel Long Distance Transmission  
A wavelength division multiplexing/de-multiplexing optical assembly for high speed parallel long distance transmission, wherein, the output terminal of the laser group is provided with the silicon...
US20120057876 METHOD FOR AMPLIFYING A BURST OPTICAL SIGNAL, BURST OPTICAL AMPLIFIER AND SYSTEM, AND COMMUNICATIONS SYSTEM  
A method for amplifying a burst optical signal, a burst optical amplifier and system, and a communications system are provided according to embodiments of the present invention. The method...
US20090232502 VISIBLE LIGHT COMMUNICATION SYSTEM AND OPTICAL WIRELESS LAN DEVICE  
A visible light communication system and an optical wireless LAN device are provided, which are capable of establishing a 10 Mbit/s LAN connection by means of an LED lighting unit which integrally...
US20150055957 METHOD OF DETERMINING PHYSICAL LAYER WAVELENGTH OF TUNABLE OPTICAL NETWORK UNIT (ONU) IN TIME AND WAVELENGTH DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORK (TWDM-PON)  
A method of determining a physical layer wavelength of a tunable optical network unit (ONU) in a time wavelength division multiplexing-passive optical network (TWDM-PON) is provided. First, a...
US20100329680 OPTICAL NETWORKS  
The invention relates to improvements in or relating to optical networks. Methods and apparatus are disclosed for providing communications services to at least one user. Transmission of an optical...
US20090324228 ONT TEST UNIT  
An Optical Network Terminal (ONT) simulator is provided. The ONT simulator includes one or more partially functional ONTs coupled to an Optical Line Termination (OLT) and an ONT/Optical network...

Matches 1 - 50 out of 202 1 2 3 4 5 >