Patents Assigned to NeoPhotonics Corporation
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Patent number: 10302975Abstract: Mach-Zehnder interferometers comprise heater elements configured to have projections in the plane of optical waveguides positioned such that two adjacent sections of one optical waveguide arms are heated by a common heater element. The heater and at least a substantial section of the heated waveguide segments can be curved. Configurations of an optical waveguide arm can comprise an outer curved heated section, an inner curved heated section, and a loopback waveguide section connecting the outer curved heated section and the inner curved heated section, with average radius of curvature selected to form an open accessible space. Appropriate configurations of the two optical waveguide arms provide for nested configurations of the arms that provide for a compact structure for the interferometer.Type: GrantFiled: December 19, 2017Date of Patent: May 28, 2019Assignee: NeoPhotonics CorporationInventors: Kenneth McGreer, Calvin Ho
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Patent number: 9939579Abstract: Monolithic optical structures include a plurality of layer with each layer having an isolated optical pathway confined within a portion of the layer. The monolithic optical structure can be used as an optical fiber preform. Alternatively or additionally, the monolithic optical structure can include integrated optical circuits within one or more layers of the structure. Monolithic optical structures can be formed by performing multiple passes of a substrate through a flowing particle stream. The deposited particles form an optical material following consolidation. Flexible optical fibers include a plurality of independent light channels extending along the length of the optical fiber. The fibers can be pulled from an appropriate preform.Type: GrantFiled: February 21, 2006Date of Patent: April 10, 2018Assignee: NeoPhotonics CorporationInventors: Michael A. Bryan, Xiangxin Bi
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Patent number: 9742520Abstract: Components of an optical communications network are described at a node of the network providing switching from one or more degrees of received optical signal routed to a plurality of receivers. The switch at the node generally includes a passive reconfigurable optical add drop multiplexer (ROADM) having drop or output ports that connector to optical channels leading to optical receivers without optical amplifiers between the ROADM outputs and the receivers. Configurations of the node and corresponding parameters are described that provide for use of lower cost components due to the absence of an array of optical amplifiers connected to the ROADM outputs.Type: GrantFiled: September 18, 2015Date of Patent: August 22, 2017Assignee: NeoPhotonics CorporationInventors: Winston Way, Ilya Vorobeichik
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Patent number: 9722722Abstract: A data transceiver module, data transmission system incorporating same and methods related thereto, which include optical transmitters configured to receive an information bearing signal and generate an optical signal having a wavelength different from wavelengths generated by others of the plurality of optical transmitters; optical receivers configured to receive an optical signal having a wavelength matching one of the plurality of optical transmitters and convert it to an information bearing electrical signal; and a four level pulse-amplitude-modulator (PAM4) chip generating a pulse-amplitude-modulated information bearing signal input to at least one optical transmitter of the plurality of optical transmitters and receiving the information bearing from at least one optical receiver of the plurality of optical receivers and converting it to an information signal using pulse amplitude demodulation. Alternative embodiments include coherent-detection-based optical coherent receiver and coherent transmitter.Type: GrantFiled: September 21, 2015Date of Patent: August 1, 2017Assignee: NEOPHOTONICS CORPORATIONInventor: Winston I. Way
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Patent number: 9660421Abstract: A multiple-output laser component is described with a plurality of diode lasers in a common package, each of the diode lasers having distinct electrical control and optically coupled to a distinct output fiber, the component configured such that up to a maximum total output power can be selectively and dynamically partitioned among said diode lasers. The dynamic allocation can be based on demand for laser power in a fiber optic coupled to each diode laser. The multi-output laser component can be used to drive amplifiers associated with a multicast switch in some embodiments.Type: GrantFiled: October 6, 2014Date of Patent: May 23, 2017Assignee: NeoPhotonics CorporationInventors: Ilya Vorobeichik, Edward C. Vail, Anthony J. Ticknor
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Patent number: 9581765Abstract: Telecommunications switches are presented, including expandable optical switches that allow for a switch of N inputs×M outputs to be expanded arbitrarily to a new number of N inputs and/or a new number of M outputs. Switches having internal switch blocks controlling signal bypass lines are also provided, with these switches being useful for the expandable switches.Type: GrantFiled: October 20, 2014Date of Patent: February 28, 2017Assignee: NeoPhotonics CorporationInventors: Winston Way, Anthony J. Ticknor, Ilya Vorobeichik
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Patent number: 9544668Abstract: A method of operation of an optical network communication system including: providing a planar lightwave circuit including: connecting 2×2 single-mode optical couplers in an array for forming a 1×N single-mode optical splitter/combiner, and routing harvesting ports to an optical line terminal receiver for collecting harvested-light, from two or more of the harvesting ports, in the optical line terminal receiver wherein one of more of the harvesting ports is from the 2×2 single-mode optical couplers; transmitting to an optical network unit through the planar lightwave circuit at a first wavelength; and interpreting a response from the optical network unit at a second wavelength through the harvested-light.Type: GrantFiled: December 13, 2010Date of Patent: January 10, 2017Assignee: NeoPhotonics CorporationInventors: David Piehler, Anthony J. Ticknor
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Patent number: 9482862Abstract: Optical telecommunication receivers and transmitters are described comprising dispersive elements and adjustable beam steering elements that are combined to provide optical grid tracking to adjust with very low power consumption to variations in the optical grid due to various changes, such as temperature fluctuations, age or other environmental or design changes. Thus, high bandwidth transmitters or receivers can be provides with low power consumption and/or low cost designs.Type: GrantFiled: July 26, 2013Date of Patent: November 1, 2016Assignee: NeoPhotonics CorporationInventors: Edward C. Vail, Milind Gokhale
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Patent number: 9425917Abstract: Optical telecommunication modules including transmitters and receivers and methods of using same. In some embodiments the transmitters include a chip having an array of lasers and a combiner for combining light from the lasers for transmission over an optical fiber. Preferably the lasers have widely spaced wavelengths. The chip may be semi-cooled in some embodiments. A dither signal may be provided to one laser for use by a receiver in tracking temperature of the laser for improved receiver performance. In some embodiments a plurality of EMLs are used instead of a greater number of plurality of DFBs for transmission.Type: GrantFiled: March 15, 2007Date of Patent: August 23, 2016Assignee: NeoPhotonics CorporationInventor: Bardia Pezeshki
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Patent number: 9391695Abstract: A system and method of operation of an optical network communication system includes: an optical fiber; an optical link attached to the optical fiber; a data transmitter for sending a downstream data message at a downstream data wavelength in the optical link; an optical time domain reflectometry (OTDR) transmitter for sending a OTDR broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link; a broadband photo detector coupled to the optical fiber; and an OTDR receiver for receiving an OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault and for calculating an error distance along the optical fiber based on the optical fault.Type: GrantFiled: July 10, 2014Date of Patent: July 12, 2016Assignee: NeoPhotonics CorporationInventor: David Piehler
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Patent number: 9369205Abstract: Linearized optical transmitter units are described for a hybrid optical fiber coaxial cable network. The linearized optical transmitter unit can comprise a directly-modulated or externally-modulated laser optically coupled to an optical conduit directed to an optical fiber communications link and electrically coupled to an electrical RF source line that provides an RF source to drive the laser or an external modulator for a light beam from the laser. A linearization information electrical component comprising memory and/or a processor, and a data output configured to transmit linearization enabling data for input into a direct digital synthesis engine that enables the direct digital synthesis engine to generate an RF signal wherein nonlinear responses of the transmitter and/or the optical fiber communications link are pre-compensated, in which the data is specific for the optical transmitter and/or the optical fiber communications link.Type: GrantFiled: September 10, 2014Date of Patent: June 14, 2016Assignee: NeoPhotonics CorporationInventor: David Piehler
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Patent number: 9337611Abstract: A tunable laser transmitter configured in a small package subassembly coupled to a printed circuit board such as an ITLA assembly. The tunable laser transmitter includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. An optical output interface is positioned at the second end of the housing and configured to transmit a modulated optical beam.Type: GrantFiled: May 21, 2013Date of Patent: May 10, 2016Assignee: NeoPhotonics CorporationInventors: Andrew John Daiber, Xiaoguang He
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Patent number: 9329346Abstract: A method of manufacture of an integrated circuit coupling system includes: forming a waveguide assembly, having a top clad over an open end of an optical core; forming a first photoresist having a base photoresist pattern shape with sloped photoresist sidewalls tapered down to expose a portion of the top clad; forming a recess having clad sidewalls from the portion of the top clad exposed by the base photoresist pattern shape, the clad sidewalls having a shape replicating a shape of the base photo resist pattern shape; and forming an optical vertical insertion area, from the clad sidewalls forming the recess, having a pocket trench, a horizontal step, and a mirror with a reflective material selectively applied to a section of the clad sidewalls and exposing the open end opposite to the mirror, the horizontal step between the mirror and the pocket trench.Type: GrantFiled: May 6, 2015Date of Patent: May 3, 2016Assignee: NeoPhotonics CorporationInventors: Jongik Won, Hsiang En Tseng, Luis Martinez, Anthony J. Ticknor
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Publication number: 20160087747Abstract: A data transceiver module, data transmission system incorporating same and methods related thereto, which include optical transmitters configured to receive an information bearing signal and generate an optical signal having a wavelength different from wavelengths generated by others of the plurality of optical transmitters; optical receivers configured to receive an optical signal having a wavelength matching one of the plurality of optical transmitters and convert it to an information bearing electrical signal; and a four level pulse-amplitude-modulator (PAM4) chip generating a pulse-amplitude-modulated information bearing signal input to at least one optical transmitter of the plurality of optical transmitters and receiving the information bearing from at least one optical receiver of the plurality of optical receivers and converting it to an information signal using pulse amplitude demodulation. Alternative embodiments include coherent-detection-based optical coherent receiver and coherent transmitter.Type: ApplicationFiled: September 21, 2015Publication date: March 24, 2016Applicant: NeoPhotonics CorporationInventor: Winston I. Way
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Patent number: 9246595Abstract: A tunable laser transmitter configured in a small package subassembly coupled to a printed circuit board. The tunable laser transmitter includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. A first and a second optical output interface is positioned at the second end of the housing, the first output being configured to transmit a modulated optical beam, and the second output configured to transmit a cw beam to the local oscillator of an external receiver.Type: GrantFiled: December 9, 2013Date of Patent: January 26, 2016Assignee: Neophotonics CorporationInventors: Andrew John Daiber, Frank Lei Ding
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Patent number: 9110232Abstract: Arrayed waveguide grating can have one or both slab waveguides with relatively sharply folded optical paths and a mirror that provides the folding of the path. The folded optical paths through the slab waveguides can result in a more compact geometry of the waveguides through the device as well as smaller slab waveguides such that the device can be formed with a significantly smaller overall footprint. Also, arrayed waveguide gratings that cooperate with pivotable mirrors can adjust light passage through the waveguide in response to temperature changes to provide for thermally compensated operation of the device. Thus, very compact planar lightwave circuits filters are described that provide thermally compensated operation.Type: GrantFiled: July 26, 2013Date of Patent: August 18, 2015Assignee: NeoPhotonics CorporationInventors: Brian P. McGinnis, Anthony J. Ticknor
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Patent number: 9054480Abstract: A tunable laser configured in a small package coupled to a printed circuit board. The tunable laser includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. An optical output interface is positioned at the second end of the housing and configured to transmit a continuous wave optical beam. A semiconductor optical amplifier or gain chip produces an optical output beam, and an optical isolator is positioned directly downstream of the gain chip to prevent the incoming light from the downstream optics from reflecting back though the isolator and into the cavity of the laser. A beam splitter directs a portion of the light transmitted through the isolator back into the other end of the gain chip.Type: GrantFiled: October 20, 2014Date of Patent: June 9, 2015Assignee: NeoPhotonics CorporationInventor: Andrew John Daiber
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Patent number: 9052460Abstract: A method of manufacture of an integrated circuit coupling system includes: forming a waveguide assembly, having a top clad over an open end of an optical core; forming a first photoresist having a base photoresist pattern shape with sloped photoresist sidewalls tapered down to expose a portion of the top clad; forming a recess having clad sidewalls from the portion of the top clad exposed by the base photoresist pattern shape, the clad sidewalls having a shape replicating a shape of the base photo resist pattern shape; and forming an optical vertical insertion area, from the clad sidewalls forming the recess, having a pocket trench, a horizontal step, and a mirror with a reflective material selectively applied to a section of the clad sidewalls and exposing the open end opposite to the mirror, the horizontal step between the mirror and the pocket trench.Type: GrantFiled: December 27, 2012Date of Patent: June 9, 2015Assignee: NeoPhotonics CorporationInventors: Jongik Won, Hsiang En Tseng, Luis Martinez, Anthony J. Ticknor
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Patent number: 8891914Abstract: Telecommunications switches are presented, including expandable optical switches that allow for a switch of N inputs×M outputs to be expanded arbitrarily to a new number of N inputs and/or a new number of M outputs. Switches having internal switch blocks controlling signal bypass lines are also provided, with these switches being useful for the expandable switches.Type: GrantFiled: October 27, 2012Date of Patent: November 18, 2014Assignee: NeoPhotonics CorporationInventors: Anthony J. Ticknor, Ilya Vorobeichik, Winston Way
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Patent number: D745208Type: GrantFiled: February 12, 2013Date of Patent: December 8, 2015Assignee: NeoPhotonics CorporationInventors: Boyang Liu, Yinan Wu, Shengbo Xu, Andrew John Daiber