Assignee: Infinera Corporation

Location: Sunnyvale, CA
No. of patents: 162

Number	Title	Issue Date
8184929	Method of tuning optical components integrated in a monolithic photonic integrated circuit (PIC) An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating wavelengths approximating a standardized wavelength grid and providin...	05/22/2012
8175113	Communication network with node bypassed co-routed multi-channel traffic Embodiments of the present invention route a wavelength division multiplexed signal across multiple communication paths using skew characteristics of at least some of the communication paths. The network is a wavelength division multiplexed optical transport network...	05/08/2012
8165017	GMPLS fast re-route for OADM and AUX 10MBPS support Embodiments of the present invention provide a GMPLS fast re-route of packets within a network using a multicast address and a table comprising a list of alias IP addresses. According to various embodiments of the invention an alternate data path from a source node ...	04/24/2012
8160405	Optical integrated circuit Consistent with the present disclosure, a non-adiabatic polarization rotator is provided that can rotate the polarization of an incoming over a relatively short length. Light is supplied to the polarization rotator via a polarizer, which insures that the optical inp...	04/17/2012
8155531	Tunable photonic integrated circuits Photonic integrated circuits (PICs) may include transmit and receive PICs that include individually tunable optical elements. In one implementation, a device may include a number of optical elements that form a number of optical channels. Tuners may be used to modif...	04/10/2012
8155488	Wavelength locking and power control systems for multi-channel photonic integrated circuits (PICs) A transmissive active channel element is provided in each signal channel of a monolithic multi-channel TxPIC where each channel also includes a modulated source. The active channel element functions both as a power control element for both monitoring and regulating ...	04/10/2012
8149687	Intra-node fault recovery within a multi-stage switching architecture A system, apparatus and method for dynamic intra node rerouting is described. In one embodiment of the invention, a multi-stage architecture within a network node is provided in which various module cards, including intermediary module cards, are interconnected with...	04/03/2012
8135279	OFDM direct detection using a balanced receiver A receiver for demodulating optical OFDM signals may detect an optical OFDM signal that includes a carrier and data subcarriers by optically splitting the carrier from the subcarriers using a frequency selective filter and then recombining the carrier and the subcar...	03/13/2012
8116602	High efficiency optical mode transformer for matching a single mode fiber to a high index contrast planar waveguide The present invention includes a device and a method for fabricating a device that is an optical power mode transformer that accepts light in a mode transformation direction where the transformer is attached to or embedded in a semiconductor microchip and includes a...	02/14/2012
8111996	Compact optical multiplexer and demultiplexer Consistent with the present disclosure, an arrayed waveguide grating (AWG) is provided that includes first inputs and second inputs. Each of the first inputs receives a corresponding one of a plurality of first optical signals, each of which has a corresponding one ...	02/07/2012
8111685	Communication network with co-routed multi-channel traffic Embodiments of the present invention route a wavelength division multiplexed signal across multiple communication paths using skew characteristics of at least some of the communication paths. The network is a wavelength division multiplexed optical transport network...	02/07/2012
8103136	Thermo-optic devices providing thermal recirculation Thermo-optical devices providing heater recirculation in an integrated optical device are described. The thermo-optical devices include at least one waveguide having a non-linear path length in thermal communication with a thermal device. Methods of fabrication and ...	01/24/2012
8098996	Adaptable duobinary generating filters, transmitters, systems and methods A variety of adaptable electronic duobinary generating filters to be used in communication systems are provided, each filter generating an adaptable electronic duobinay signal which is optimized for system impairments. According to one exemplary implementation, an a...	01/17/2012
8068734	Mapping a client signal into transport frames Embodiments of the present invention provide a systems, devices, and methods in which a client signal is divided into a plurality of channels, mapped within transport frames, and combined into a WDM transport signal. These embodiments include intra-nodal redundancy ...	11/29/2011
8064771	Active control loop for power control of optical channel groups A system, apparatus and method are described for deployment of a control loop between optical or electro-optical modules and a multiplexing module to provide a desired power profile of banded optical channel groups. The power output characteristics of the optical or...	11/22/2011
8064486	Determination of channel latency within a round-trip path The present invention provides a system, apparatus, and method for determining latency differences in channels within a link at a single test site. In particular, the method allows for a single transmitting device to determine distinct latency differences on both tr...	11/22/2011
8054876	Active delay line A delay line for deployment in an equalizer to insert a delay in a signal received by the delay line employs a plurality of cascaded delay stages where the delay per stage provided by an active unit-gain amplifier in each stage that provides sufficient impedance mis...	11/08/2011
8031704	Network planning and optimization of equipment deployment Embodiments of the present invention provide systems, devices and methods for improving the efficient deployment and configuration of networking equipment within a network build-out. In certain embodiments of the invention, an iterative analysis of inter-node equipm...	10/04/2011
8014686	Polarization demultiplexing optical receiver using polarization oversampling and electronic polarization tracking An optical receiver utilizes differential quadrature phase-shift keying (DQPSK) demodulation and electrical crosstalk rejection to relax requirements on filter misalignment with a carrier signal and to enable electronic polarization demultiplexing of optical signals...	09/06/2011
8009940	Photonic integrated circuit with improved signal quality and electrostatic discharge threshold Embodiments of the present invention provide for enhanced monitoring of optical signal characteristics of an optical signal propagating in a signal channel of a photonic integrated circuit. The optical signal characteristics can be obtained with minimal signal loss ...	08/30/2011
7995921	Banded semiconductor optical amplifiers and waveblockers Embodiments of the present invention provide an array of semiconductor optical amplifiers, within a photonic integrated circuit (hereinafter, “PIC”), that apply a gain to one or more optical bands within a WDM signal. According to various embodiments of the inve...	08/09/2011
7983559	Configurable multi-rate optical network port and processing modules Embodiments of the present invention provide an optical port that can be configured to support either high speed or low speed optical signals. In particular, these embodiments comprise a switch that defines a data-rate dependent path between the front-end optics of ...	07/19/2011
7974504	Reflection suppression in a photonic integrated circuit Embodiments of the present invention provide systems, devices and methods in which optical reflections are reduced in a photonic integrated circuit. These embodiments include reflection suppression elements which operate to dissipate optical energy that would otherw...	07/05/2011
7973265	Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and compound filter shape An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is cou...	07/05/2011
7970280	Thermally-floating transmitter wavelength grid of signal channels in a WDM transmission system A method and apparatus is provided for tracking a thermally floating wavelength signal channel grid generated at an optical transmitter (Tx) in an optical transmission system or optical network where the wavelengths of the individual Tx signal channels may move in w...	06/28/2011
7970114	Consistency of state model visualization across different standard attributes A system, apparatus and method are described for displaying multiple attributes relative to objects in a network management program. In one embodiment, multiple attributes from a plurality of different standards are coalesced together and the coalesced attributes ar...	06/28/2011
7969868	Path-level protection for digitally wrapped payloads A node, of a group of nodes, may detect a failure on a first path; establish a connection associated with a second path when the failure on the first path is detected; store an identifier in a field in an overhead portion of a data frame when the failure on the firs...	06/28/2011
7965915	Hermaphroditic u-guide alignment structures and method thereof An integrated optical waveguide circuit apparatus having an optical processing area, waveguide ports for optical processing, and at least one waveguide structure, the at least one waveguide structure going around the optical processing area. Methods for making the i...	06/21/2011
7961994	Optical interface assembly An optical device includes a first waveguide having an end portion configured to receive an optical signal, the optical signal having a fundamental mode; a second waveguide having an end portion spaced from the end portion of the first waveguide; and a cladding laye...	06/14/2011
7961053	Integrated circuit having a dummy transimpedance amplifier Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are connected to photodiodes and output voltage signals for further processing. T...	06/14/2011
7903910	Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and compound filter shape An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is cou...	03/08/2011
7899280	Low loss lateral optical waveguide intersections A geometrically shaped optical waveguide crossing with minimal transmission loss is described. A symmetrically tapered waveguide intersection is used to minimize loss in the intersecting region where at least two optical waveguides cross one another. The present inv...	03/01/2011
7889642	GMPLS fast re-route for OADM and AUX 10Mbps support Embodiments of the present invention provide a GMPLS fast re-route of packets within a network using a multicast address and a table comprising a list of alias IP addresses. According to various embodiments of the invention an alternate data path from a source node ...	02/15/2011
7885492	Transmitter photonic integrated circuit (TxPIC) chips A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input o...	02/08/2011
7881612	Optical autodiscovery for automated logical and physical connectivity check between optical modules Optical autodiscovery is provide between two optical modules to insure that when an optical signal is coupled between the two optical module, the optical signal from a first module does not interfere with operation of a second module. The autodiscovery is implemente...	02/01/2011
7848369	Optical modulator drive circuit with integrated low power output bias voltage control A modulator drive circuit provides a modulator drive signal to modulate an optical signal for transport across a network infrastructure. The modulator drive circuit powered by an adjustable voltage source, such that the modulator drive signal is generated from a dat...	12/07/2010
7877016	Photonic integrated circuit (PIC) transceivers for an optical line terminal (OLT) and an optical network unit (ONU) in passive optical networks (PONs) A photonic integrated circuit (PIC) for a PON transceiver comprises a single monolithic chip having a modulated transmitter laser diode of a first wavelength, λ1, for generating a first communication signal outgoing from the chip via an input/output port...	01/25/2011
7873133	Recovery of client clock without jitter The present invention provides a system, apparatus and method for recovering a client signal clock. The present invention is able to more effectively remove jitter within a clock signal by providing a phase shifting element in the feedback of a PLL system to compens...	01/18/2011
7840103	Performance compensated Tx/Rx optical devices A wavelength division multiplexing system has a wavelength division multiplexer and a wavelength division demultiplexer. The wavelength division demultiplexer is in series with the wavelength division multiplexer to process at least one optical signal to generate at...	11/23/2010
7802924	Fiber optic ferrule Consistent with the present disclosure, a ferrule is provided that includes first and second channels, for example. Multiple fibers of a ribbon cable, for example, are divided into groups and fed into corresponding channels of the ferrule. Since multiple channels ar...	09/28/2010

«First «Previous1 2 3 4 5 Next»Last»

PatentStorm

Bizarre Patents

PatentStorm News

Assignee: Infinera Corporation