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7613391 Optical signal switching device for use in an optical protection network  
An optical network system is provided which has a signal protection function and is able to be constructed of communication nodes manufactured at low costs. An optical signal transceiver has at...
7483638 Optical transceiver  
The present invention provides an optical transceiver that enables to reduce the crosstalk from the optical transmitter to the optical receiver. The regenerator of the optical transceiver includes...
7460788 Transmitting and receiving device  
A transmitting and receiving device, in which the received signal which is produced by the receiving device has only a small amount of crosstalk. This object is achieved by providing a transmitting...
7447439 Optical duplexer and optical triplexer  
An optical triplexer design is described in which external optical signals at a first wavelength range propagate through a laser source. The laser source provides optical signals having a second...
7447437 Interface arrangement for opto-electronic data transfer, and plug-in opto-electronic transceiver  
An interface arrangement for opto-electronic data transfer which has an electrical plug connection part which includes at least one electrical contact used by a connected plug-in transceiver to...
7440702 Method for transmitting digital image signal, digital image transmitting device, digital image sending device and digital image receiver  
A multiplexer of a transmission section generates a clock signal by multiplying a reference clock signal of a digital image signal by a predetermined number ‘K’. A parallel digital image signal...
7418208 Optoelectronic transceiver for a bidirectional optical signal transmission  
An optoelectronic transceiver for a bidirectional optical signal transmission including a housing having a width of at most 13.5 mm, a first bidirectional optical subassembly arranged in the...
7394771 Apparatus and method for data communication including establishing communication using tone signal  
In optical two-way communication using a single optical fiber, part of the light transmitted from an apparatus is received as stray light by the apparatus itself. This occasionally hampers accurate...
7394986 Flat top optical filtering component  
The invention relates to wavelength-selective optical filters for allowing light of a narrow optical spectral band, centered around a wavelength (λ c ) to pass through them, while reflecting the...
7359592 Single fiber links for full duplex aircraft data network  
A method for creating a full duplex fiber optic network using one single fiber optic cable of the multimode fiber type for simultaneous transmission and reception is described. The method includes...
7359640 Optical coupling device and method for bidirectional data communication over a common signal line  
Optical coupling device operates over a bidirectional data link between at least first and second communicators, each communicating data along a common wire of the data link. The device includes at...
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...
7330617 Wavelength selective optical switch, and optical device provided with spectroscopic function  
A wavelength selective optical switch of the present invention separates a WDM light emitted from an input port of an input and output optical system, according to wavelengths, by a diffraction...
7286767 Optical transceiver over single communication link  
A method, apparatus, and system for optical communications. An optical transmit signal is generated in response to an electrical transmit signal. The optical transmit signal is coupled into a...
7269349 Method of and device for performing bi-directional transmission using a single-wire  
Two signal lights having different wavelengths are bidirectionally transmitted on an optical-fiber transmission-line. A Raman pump light source generates a first Raman pump light having...
7242860 Optical protection switching using 2 by 2 switching functions  
A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small...
7215843 Optical switching apparatus and optical switching method  
An optical switching apparatus includes an optical switch having a plurality of input ports and output ports, optical amplifiers, monitor circuits, optical amplifiers monitor circuits, and a...
7212747 Optical transmission device and optical transmission method for transmitting a burst radio signal  
A light emitting section outputs an optical signal having an intensity corresponding to a transmission timing signal, the optical signal modulated based on a radio transmission signal. A received...
7200335 Optical transceiver  
An optical transceiver is equipped with at least one coupling lens which condenses reception signal light from an optical medium and condenses transmission signal light to the optical medium, an...
7139487 Light burst transmission/reception control system, parent station device used in the same, child station device, and light burst transmission/reception control method  
A host station apparatus ( 10 ) generates band allocation information including identifications of slave station apparatuses ( 20 - 1 through 200 -n) and types of data to be transmitted by the...
7120357 WDM device, client device, network, system and method for allocating wavelength of WDM to a client signal  
A WDM (Wavelength Divisional Multiplex) device is provided in which a client signal having a band that is greater than a band of a wavelength used for wavelength-division multiplexing is allocated...
7110672 Optical transmission system for frequency-multiplexed signal  
A detector outputs a detection signal indicating amplitude variation of an input frequency-multiplexed signal. An amplitude controller adjusts the amplitude of the frequency-multiplexed signal by...
7088926 Electro-optical connector module  
The invention pertains to an electro-optical connector module comprising a connection part, at least one optical transmitter circuit and/or optical receiver circuit and at least one electro-optical...
7058309 Optoelectronic transceiver  
An optoelectronic transceiver including an optoelectronic transmitting unit disposed along an optical axis and having a radiation-emitting layer region and an active radiation-sensitive layer...
7039270 Optical transmission system  
A device wavelength division multiplex optical transmission system has the wavelengths of the optical carriers arranged so as to reduce the effect of in-band crosstalk which results from unwanted...
7035540 Optical fiber ring communication system  
An optical fiber ring network includes a plurality of interconnected nodes, each pair of neighboring nodes being interconnected by a pair of optical links. Using coarse wavelength division...
6990270 Fiber amplifier for generating femtosecond pulses in single mode fiber  
A source of high-power femtosecond optical pulses comprises a combination of a relatively short rare-earth doped fiber amplifier (e.g., less than five meters) with a first section of single mode...
6978062 Wavelength division multiplexed device  
A wavelength division multiplexed device is based on a transmission grating spectrometer having at least two diffractive optical elements. The WDM device provides flexible use and may be widely...
6973268 Bi-directional optical transmission using dual channel bands  
A bi-directional optical transmission system according to the present invention provides transport of x optical channels over n nodes. The system supports two-way transport of the x channels over a...
6928246 Optical transmission system for frequency-multiplexed signal  
A detector outputs a detection signal indicating amplitude variation of an input frequency-multiplexed signal. An amplitude controller adjusts the amplitude of the frequency-multiplexed signal by...
6925256 Optical discriminator for transmitting and receiving in both optical fiber and free space applications  
A bi-directional communication assembly is provided with commonly available optoelectronic components in a compact package. Diplex functionality is achieved by orienting the receiving detector at...
6885821 Full-duplex optical add/drop communications system utilizing central light sources  
The present invention provides an improved full-duplex optical communications system. The system includes: at least one office, where the at least one office provides a plurality of channels, the...
6839517 Apparatus and method for transmitting optical signals through a single fiber optical network  
An apparatus for wavelength multiplexing optical signals, wherein the apparatus includes at least one optically conductive sleeve, at least one collimating lens positioned to receive a optical...
6751414 Circuit and channel assignment plan for optical transmissions  
To support interleaving of optical channels and to provide sufficient isolation between such interleaved channels, a circulator ( 60-62 ) receives, on an optical fiber ( 16-18 ), a broadband signal...
6731881 Device for transmitting and receiving optical signals  
A device for interactively transmitting optical signals in a first wavelength and receiving optical signals in a second wavelength both through a one-core optical fiber, includes a first photodiode...
6728484 Method and apparatus for providing channel provisioning in optical WDM networks  
A method and apparatus for providing channel provisioning in optical wavelength division multiplexing (WDM) networks. The method and apparatus provide a distributed framework to provision channels...
6704517 Bi-directional dispersion compensator  
The bidirectional dispersion compensator comprises at least one circulator (Z,Z 1 ,Z 2 ,Z 4 ) and at least one filter-coupler element (F 1 , etc.). The optical signals (S 1 ,S 2 ) that are emitted...
6700910 Wavelength tunable laser and optical device  
In order to form a wavelength tunable laser capable of tuning a wave over a wide range by simple control means, a thin film heater is mounted either over an upper electrode of a ridge waveguide...
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...
6665460 Method and apparatus for selecting signal components from optical signals  
A selector assembly to select and deselect signal components from optical signals is disclosed. The selector assembly has an input optical connector for optically connecting an input optical signal...
6665476 Wavelength selective optical add/drop multiplexer and method of manufacture  
One embodiment of the present invention is an exemplary wavelength selective optical coupling device. This exemplary device includes two waveguides, a ring or disc resonator, and resonator coupling...
6606430 Passive optical network with analog distribution  
A passive optical network which is capable of full duplex digital transmission at high data rates and which also provides analog broadcast transmission is disclosed. A central station provides...
6597831 Linear wavelength DWDM  
The present invention concerns a linear wavelength DWDM that is compact and is adapted for use with fibre ribbons and which compensates for the non-linear relationship between equally spectrally...
6570683 Wavelength re-use  
The invention assigns wavelengths to nodes in such a way that wavelengths may be reused thus achieving a minimum number of wavelengths for any network. A starting node and a direction within the...
6509984 Crosstalk reduction in a bidirectional optical link  
The present invention relates to a method and a device for crosstalk reduction in a communication link for simultaneous and bidirectional optical transmission. In order to reduce crosstalk, two...
6498666 Integrated optical transceiver  
An integrated optical transceiver comprising: a laser cavity formed between first and second feedback elements ( 3,7 ), wavelength selective means, eg a diffraction grating ( 4 ), within the laser...
6381045 Method and apparatus for bidirectional communication over a single optical fiber  
Dual concentric core fiber is used for optical communication. Inbound messages lying in a first wavelength channel are received from a terminal portion of the fiber, and outbound messages lying in...
6356251 Matrix type liquid-crystal display with optical data communication feature  
A matrix type display is provided in which information is transmitted to a flat panel display element such as a liquid crystal or electroluminescent panel utilizing optical communication....
6342966 Crosstalk suppression in a multipath optical amplifier  
A multi-amplification path optical amplifier including a first amplification path for propagating and amplifying a first in-band optical communication signal, including a spectrally selective...
6339487 Bi-directional optical transmission system  
A bi-directional optical transmission system provides communications between at least two locations over a single optical fiber. The transmitters at the respective locations are defined to have...
Matches 1 - 50 out of 129 1 2 3 >