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Matches 1 - 50 out of 17,296

Document Document Title
WO/2021/000616A1
Disclosed in an embodiment of the present invention is a wavelength selective switch, comprising: an input optical fiber collimation array comprising multiple input ports; a relay lens positioned between a first switching engine and a se...  
WO/2020/259843A1
There is provided a security system for use at an enclosure containing one or more passive components of an optical communication link. The security system comprises a sensor configured to detect a physical breach of the enclosure, and a...  
WO/2020/261924A1
Provided are a junction device and an undersea cable system capable of saving a branch line when a problem involving ground fault occurs in a power feed line on a branch station side. This junction device is inserted into a power feed li...  
WO/2020/257149A1
Aspects described herein include an optical apparatus comprising at least a first Bragg grating of a first stage. The first Bragg grating is configured to transmit a first two wavelengths and to reflect a second two wavelengths of a rece...  
WO/2020/257772A1
Entanglement among qubits can be generated using "rasterized" and interleaving techniques. A circuit can include a resource state generator that generates one resource state per clock cycle, with each resource state having a number of en...  
WO/2020/253478A1
The present application provides a resource management method and apparatus, a communication device, and a storage medium. The method comprises: obtaining node identification information and interface information of an optical network no...  
WO/2020/253850A1
Provided are a front-haul transport network control method, a network device, and a front-haul transport network control system. The method is applied to an active wavelength division multiplexing (WDM) device, and comprises: obtaining m...  
WO/2020/256913A1
An apparatus and method for generating a dense wavelength division and multiplexing (DWDM) optical stream in a photonic integrated circuit (PIC) is disclosed. An optical input source including a number (N) of optical channels (wavelength...  
WO/2020/255466A1
A submarine optical cable system equipped with a submarine optical branching device for branching off to a third terminal station between a first and a second terminal station, wherein it is made possible to switch the connection of an o...  
WO/2020/247692A1
An example system includes a hub transceiver and a plurality of edge transceivers. The hub transceiver is operable to transmit, over a first communications channel, a first message to each of the edge transceivers concurrently, including...  
WO/2020/244634A1
The embodiments of the present disclosure provide an optical module, a management and control information processing method, and a communication system; the optical module comprises: a clock recovery unit, a light-emitting unit, a light-...  
WO/2020/244633A1
Provided in the present disclosure are a control method for a radio access network, a network device, and a system, the method comprising: sending a management request to a remote radio unit (RRU)/active antenna unit (AAU); and receiving...  
WO/2019/204336A8
Apparatus and methods for unified high-bandwidth, low-latency data services. In one embodiment, a network architecture having service delivery over at least portions of extant infrastructure (e.g., a hybrid fiber coaxial infrastructure) ...  
WO/2020/242519A1
A method (400) for in-field calibration of a laser transmitter includes receiving, at an optical network unit (ONU) (140), a downstream connection (310) from an optical line terminal (OLT) (120) where the ONU includes a Distributed Bragg...  
WO/2020/239238A1
A method of power control of an optical signal transmitted by a first network element. The first network element comprising a laser and a bandpass filter operating on the optical signal produced by said laser, whereas the method comprise...  
WO/2020/234922A1
This optical amplification device (100) is for a multi-directional path optical transmission system and is provided with: an optical amplifier group configured from a plurality of optical amplifiers (13); an excitation light source (11);...  
WO/2020/234248A1
The invention relates to a method for preventing an interception in a fiber-optic network. The fiber-optic network has intersection points at which optical fibers of the fiber-optic network meet one another and are connected by means of ...  
WO/2020/231489A1
Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, a transmitter includes a laser ...  
WO/2020/230195A1
The optical communication system (20) according to the present invention is provided with an optical communication device (1-1) and an optical communication device (1-2). The optical communication device (1-1) is provided with: an optica...  
WO/2020/228674A1
Provided in the embodiments of the present application are an optical network system and a method for scheduling same, and a data center interconnection network. In the embodiments of the present application, the optical network system c...  
WO/2020/227240A1
A system comprises an electromagnetic radiation source, a polarizing element, a mode converter, an optical fiber, and a measurement device. The polarizing element receives electromagnetic radiation produced by the electromagnetic radiati...  
WO/2020/226718A1
This disclosure describes digitally generating sub-carriers (SCs) to provide isolation and dynamic allocation of bandwidth between uplink and downlink traffic between transceivers that are communicatively coupled via a bidirectional link...  
WO/2020/226844A1
A redundancy system for a distributed antenna system is provided. The system includes a first communication link, a second communication link, a first communication node and a second communication node. The first communication link trave...  
WO/2020/221141A1
The present application relates to the technical field of optical communication, and discloses a method and device for transmitting data in an optical transport network, which help to reduce bandwidth waste so as to improve bandwidth res...  
WO/2020/220770A1
Disclosed are an optical add-drop multiplexing apparatus and a method for controlling same, wherein a radius requirement for a microring is lowered by means of waveband division, the difficulty in manufacturing a microring filter is redu...  
WO/2020/222901A1
Many free-space optical (FSO) communications systems use pointing, acquisition, and tracking (PAT) systems to align the transmit and receive apertures for efficiently coupling received light to a detector. Conventional PAT systems divert...  
WO/2020/219183A1
A wavelength switchable laser is described which has a multi-wavelength laser source configured to generate signals at different wavelengths. The wavelength switchable laser has a wavelength selector with a plurality of electro-optical s...  
WO/2020/217084A1
All-optical multi-rate systems and methods include and use a continuous wave (CW) light source for providing a CW carrier signal, a plurality of modulators used for modulating the CW carrier signal to form a plurality of modulated optica...  
WO/2020/214360A1
Disclosed in some examples, are optical devices, systems, and machine-readable mediums that send and receive multiple streams of data across a same optical communication path (e.g., a same fiber optic fiber) with a same wavelength using ...  
WO/2020/214361A1
Disclosed in some examples, are optical devices, systems, and machine-readable mediums that send and receive multiple streams of data across a same optical communication path (e.g., a same fiber optic fiber) with a same wavelength using ...  
WO/2020/214362A1
Disclosed in some examples, are optical devices, systems, and machine-readable mediums that send and receive multiple streams of data across a same optical communication path (e.g., a same fiber optic fiber) with a same wavelength using ...  
WO/2020/214354A1
Disclosed in some examples, are optical devices, systems, and machine-readable mediums that send and receive multiple streams of data across a same optical communication path (e.g., a same fiber optic fiber) with a same wavelength using ...  
WO/2020/214330A1
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for clock synchronizing an optical system and multiple leaf systems. In some implementations, an apparatus includes a receiver comprising: a ...  
WO/2020/214352A1
Disclosed in some examples are methods, systems, optical devices, and machine readable mediums for utilizing uncertainty ranges along with ECC in power level modulation schemes. Photon counts within the uncertainty ranges are not demulti...  
WO/2020/210269A1
Systems and methods include, responsive to a request for capacity change of X channels, X is an integer > 1, on an optical section (14) and at an Optical Add/Drop Multiplexer (OADM) node (12) in an optical network (10), dividing optical ...  
WO/2020/208581A1
Optical systems, receivers, devices, and methods including a free space beam combining and polarization splitting prism to receive local oscillator light and optical signals in substantially parallel input paths that are in the same plan...  
WO/2020/210288A1
A wavelength division multiplexing filter comprises: a first multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers, and a second multi-order Mach-Zehnder interferometer comprising a pl...  
WO/2020/209095A1
In the present invention, an uplink transmission band and a downlink transmission band to be allocated to users are determined on the basis of allocation information indicating the allocation of a usable frequency bandwidth to each user,...  
WO/2020/195912A1
[Problem] To reduce device cost and power consumption. [Solution] Each of nodes 11a - 11d as optical add/drop multiplexers comprises: AWGs 24a, 24b which are connected between optical transmission paths, which are optical fibers 12, 13, ...  
WO/2020/192533A1
Disclosed are a service data processing method and apparatus, wherein same are used for solving the problem in the prior art of a relatively low bandwidth utilization rate. By means of using a dynamic framing method, when the transmissio...  
WO/2020/198294A1
An optical module (10) includes a plurality of ports (12) configured to connect to a multi-fiber cable that includes transmit fibers and receive fibers therein for the plurality of ports (12); a detector for each of the plurality of port...  
WO/2020/198321A1
An optical integrated light source includes a plurality of topological ring resonators. Each of the topological ring resonators is defined by an interface between two distinct periodic structures having different topological invariants s...  
WO/2020/194554A1
A master node (10) connected by a plurality of paths to each of a plurality of slave nodes is characterized by comprising: a counter (115); and a round-trip transmission delay time calculation unit (114) that uses a value of the counter ...  
WO/2020/180351A8
Photonic units for vector-vector multiplication, matrix-vector multiplication, matrix-matrix multiplication, batch matrix-matrix multiplication, and tensor-tensor multiplication are described. Multiplications are through coherent mixing ...  
WO/2020/195737A1
[Problem] To provide an optical add/drop multiplexer capable of continuing operation and maintaining stable transmission characteristics even when an abnormality occurs. [Solution] The optical add/drop multiplexer is configured so as to ...  
WO/2020/195913A1
[Problem] To reduce device cost and power consumption. [Solution] Each of nodes 11a - 11d as optical add/drop multiplexers comprises cAWGs 24a, 24b which each have a plurality of first-side ports and second-side ports which are connected...  
WO/2020/196216A1
Provided is a polarization multiplexed light transmission/reception circuit with which it is possible to compensate for PDL on the transmission side having mitigated a decrease in transmission power, and to make variable the branching ra...  
WO/2020/195187A1
The present invention suppresses degradation in the characteristics of a MIMO equalizer while suppressing an increase in circuit scale as much as possible, even when narrowing of a signal spectrum or asymmetrical spectrum degradation occ...  
WO/2020/194860A1
The purpose of the present invention is to provide an optical equalizer, a method, and a program which are capable of flattening a tilt characteristic of a wavelength division multiplexed optical signal with a simple configuration. The o...  
WO/2020/194842A1
In this submarine optical cable system in which terminal stations are connected by a plurality of optical fiber transmission lines, a designated optical fiber transmission line is connected to an optical fiber transmission line for branc...  

Matches 1 - 50 out of 17,296