Patents by Inventor Nenad Duricic
Nenad Duricic has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11726280Abstract: An opto-mechanical assembly includes a first thermal control element disposed on a region of a first section of an enclosure; a second thermal control element disposed on a region of a second section of the enclosure; and an optical element that includes a first portion and a second portion. The first thermal control element is configured to heat the first portion of the optical element and to cause the first portion of the optical element to be associated with a first temperature, and the second thermal control element is configured to heat the second portion of the optical element and to cause the second portion of the optical element to be associated with a second temperature. This causes a difference between the first temperature and the second temperature to satisfy a temperature difference threshold. Accordingly, this also causes a temperature gradient along an axis of the optical element to satisfy a temperature gradient threshold.Type: GrantFiled: June 24, 2021Date of Patent: August 15, 2023Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Nenad Duricic, Shane H. Woodside, Doug Cross, Andrew Telford
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Patent number: 11728611Abstract: An optical device may include an enclosure including an optical aperture and a plurality of optical components positioned within the enclosure, where the plurality of optical components are to emit and/or receive light through the optical aperture. The optical device may include at least one heating element or cooling element to provide an isothermal environment to the plurality of optical components, where the at least one heating element or cooling element is thermally coupled with the enclosure.Type: GrantFiled: December 12, 2019Date of Patent: August 15, 2023Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Nenad Duricic, Doug Cross
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Publication number: 20220326458Abstract: An opto-mechanical assembly includes a first thermal control element disposed on a region of a first section of an enclosure; a second thermal control element disposed on a region of a second section of the enclosure; and an optical element that includes a first portion and a second portion. The first thermal control element is configured to heat the first portion of the optical element and to cause the first portion of the optical element to be associated with a first temperature, and the second thermal control element is configured to heat the second portion of the optical element and to cause the second portion of the optical element to be associated with a second temperature. This causes a difference between the first temperature and the second temperature to satisfy a temperature difference threshold. Accordingly, this also causes a temperature gradient along an axis of the optical element to satisfy a temperature gradient threshold.Type: ApplicationFiled: June 24, 2021Publication date: October 13, 2022Inventors: Roozbeh AHMADI, Nenad DURICIC, Shane H. WOODSIDE, Doug CROSS, Andrew TELFORD
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Publication number: 20220229260Abstract: An optical bench may include an integrated heater. The integrated heater may include a substrate and a heating element disposed onto the substrate. The heating element may include at least one electrical trace. The integrated heater may be associated with a non-monolithic shape configured to cause the heating element to heat an optical device disposed in proximity to the optical bench with a temperature gradient of less than a threshold. The integrated heater may be disposed onto at least one of a surface of the optical bench or a surface of an optical component of the optical device.Type: ApplicationFiled: April 4, 2022Publication date: July 21, 2022Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
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Publication number: 20210063685Abstract: An optical device may include an enclosure including an optical aperture and a plurality of optical components positioned within the enclosure, where the plurality of optical components are to emit and/or receive light through the optical aperture. The optical device may include at least one heating element or cooling element to provide an isothermal environment to the plurality of optical components, where the at least one heating element or cooling element is thermally coupled with the enclosure.Type: ApplicationFiled: December 12, 2019Publication date: March 4, 2021Inventors: Roozbeh AHMADI, Nenad DURICIC, Doug CROSS
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Patent number: 10684441Abstract: A method may include identifying, by a device, a set of components of an optical device. The method may include determining, by the device, a set of design criteria based on the set of components of the optical device. The method may include identifying, by the device, an initial heater configuration based on the set of design criteria. The method may include determining, by the device, a set of optimization parameters for determining a target heater configuration based on the set of design criteria. The method may include performing, by the device and based on the set of optimization parameters, an optimization procedure to alter the initial heater configuration to determine the target heater configuration. The method may include providing, by the device, information identifying the target heater configuration based on performing the optimization procedure.Type: GrantFiled: September 27, 2017Date of Patent: June 16, 2020Assignee: Lumentum Operations LLCInventors: Roozbeh Ahmadi, Doug Cross, Nenad Duricic, Martin Matthews
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Publication number: 20190094481Abstract: A method may include identifying, by a device, a set of components of an optical device. The method may include determining, by the device, a set of design criteria based on the set of components of the optical device. The method may include identifying, by the device, an initial heater configuration based on the set of design criteria. The method may include determining, by the device, a set of optimization parameters for determining a target heater configuration based on the set of design criteria. The method may include performing, by the device and based on the set of optimization parameters, an optimization procedure to alter the initial heater configuration to determine the target heater configuration. The method may include providing, by the device, information identifying the target heater configuration based on performing the optimization procedure.Type: ApplicationFiled: September 27, 2017Publication date: March 28, 2019Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
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Publication number: 20190094482Abstract: An optical bench may include an integrated heater. The integrated heater may include a substrate and a heating element disposed onto the substrate. The heating element may include at least one electrical trace. The integrated heater may be associated with a non-monolithic shape configured to cause the heating element to heat an optical device disposed in proximity to the optical bench with a temperature gradient of less than a threshold. The integrated heater may be disposed onto at least one of a surface of the optical bench or a surface of an optical component of the optical device.Type: ApplicationFiled: September 27, 2017Publication date: March 28, 2019Inventors: Roozbeh AHMADI, Doug CROSS, Nenad DURICIC, Martin MATTHEWS
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Patent number: 9664867Abstract: An opto-electronic package having two enclosures in which a first non-hermetic enclosure provides the structural rigidity required to maintain the alignment of the optical components for a predetermined environmental range, and second flexible enclosure that provides a hermetical seal for the opto-electronic package.Type: GrantFiled: August 17, 2016Date of Patent: May 30, 2017Assignee: Lumentum Operations LLCInventors: Steven Harold Moffat, Nenad Duricic, Simon Moore-Crispin
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Patent number: 9563021Abstract: An optical switching device including an optical switching engine may be packaged by omitting an optical bench and disposing optical elements directly on a base of a housing of the optical switching device. The optical switching engine may be disposed on a ceramic portion of the base, and thermally matched to the ceramic base. The base may be reinforced by the housing walls and optional internal rigidity ribs. The optical elements may be thermally matched to the base, and the lid may be strain relieved by thinning lid edges. The housing may be mounted to an external chassis using soft grummets.Type: GrantFiled: March 17, 2015Date of Patent: February 7, 2017Assignee: Lumentum Operations LLCInventors: Abdul Jaleel K. Moidu, Sheldon McLaughlin, Nenad Duricic
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Publication number: 20160356972Abstract: An opto-electronic package having two enclosures in which a first non-hermetic enclosure provides the structural rigidity required to maintain the alignment of the optical components for a predetermined environmental range, and second flexible enclosure that provides a hermetical seal for the opto-electronic package.Type: ApplicationFiled: August 17, 2016Publication date: December 8, 2016Inventors: Steven Harold MOFFAT, Nenad Duricic, Simon Moore-Crispin
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Patent number: 9428322Abstract: An opto-electronic package having two enclosures in which a first non-hermetic enclosure provides the structural rigidity required to maintain the alignment of the optical components for a predetermined environmental range, and second flexible enclosure that provides a hermetical seal for the opto-electronic package.Type: GrantFiled: July 30, 2014Date of Patent: August 30, 2016Assignee: Lumentum Operations LLCInventors: Steven Harold Moffat, Nenad Duricic, Simon Moore-Crispin
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Publication number: 20150260921Abstract: An optical switching device including an optical switching engine may be packaged by omitting an optical bench and disposing optical elements directly on a base of a housing of the optical switching device. The optical switching engine may be disposed on a ceramic portion of the base, and thermally matched to the ceramic base. The base may be reinforced by the housing walls and optional internal rigidity ribs. The optical elements may be thermally matched to the base, and the lid may be strain relieved by thinning lid edges. The housing may be mounted to an external chassis using soft grummets.Type: ApplicationFiled: March 17, 2015Publication date: September 17, 2015Inventors: Abdul Jaleel K. MOIDU, Sheldon McLAUGHLIN, Nenad DURICIC
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Publication number: 20150034512Abstract: An opto-electronic package having two enclosures in which a first non-hermetic enclosure provides the structural rigidity required to maintain the alignment of the optical components for a predetermined environmental range, and second flexible enclosure that provides a hermetical seal for the opto-electronic package.Type: ApplicationFiled: July 30, 2014Publication date: February 5, 2015Inventors: Steven Harold MOFFAT, Nenad DURICIC, Simon MOORE-CRISPIN
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Patent number: 8121483Abstract: A hermetically packaged, MEMS array-based ROADM module is disclosed. The enclosure sidewalls and a top lid are made of Kovar, and the base is made of alumina ceramic AuSn-soldered to the enclosure sidewalls. The MEMS array is attached to the ceramic base. The optics are passively pre-aligned using a removable template and epoxied to an optical bench. The optical bench is actively aligned as a whole and attached to the ceramic base. A plurality of electrical feedthrough contact pins extend from the bottom of the ceramic base for connecting the MEMS to a connector on a printed circuit board. In one embodiment of the invention, the ceramic base extends beyond the footprint of the sidewalls of the enclosure of the module, for mounting additional electronic components, for example MEMS driver circuitry chips, directly to the ceramic base of the enclosure.Type: GrantFiled: December 5, 2008Date of Patent: February 21, 2012Inventors: Nenad Duricic, Pierre D. Wall
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Patent number: 8036502Abstract: An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base. The optical bench is attached to the base and the optical components supported thereon are aligned with the array of switching elements of the switching engine. The optical bench is attached to the base with at plurality of mounts, which include at least one movable mount supporting movement of the optical bench in a plane parallel to the optical bench and at least one fixed mount maintaining optical alignment between the dispersive element and the array of switching elements.Type: GrantFiled: April 17, 2009Date of Patent: October 11, 2011Assignee: JDS Uniphase CorporationInventors: Nenad Duricic, Sheldon McLaughlin, Pierre D. Wall
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Publication number: 20090263080Abstract: An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base. The optical bench is attached to the base and the optical components supported thereon are aligned with the array of switching elements of the switching engine. The optical bench is attached to the base with at plurality of mounts, which include at least one movable mount supporting movement of the optical bench in a plane parallel to the optical bench and at least one fixed mount maintaining optical alignment between the dispersive element and the array of switching elements.Type: ApplicationFiled: April 17, 2009Publication date: October 22, 2009Inventors: Nenad DURICIC, Sheldon Mclaughlin, Pierre D. Wall
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Publication number: 20090214207Abstract: A hermetically packaged, MEMS array-based ROADM module is disclosed. The enclosure sidewalls and a top lid are made of Kovar, and the base is made of alumina ceramic AuSn-soldered to the enclosure sidewalls. The MEMS array is attached to the ceramic base. The optics are passively pre-aligned using a removable template and epoxied to an optical bench. The optical bench is actively aligned as a whole and attached to the ceramic base. A plurality of electrical feedthrough contact pins extend from the bottom of the ceramic base for connecting the MEMS to a connector on a printed circuit board. In one embodiment of the invention, the ceramic base extends beyond the footprint of the sidewalls of the enclosure of the module, for mounting additional electronic components, for example MEMS driver circuitry chips, directly to the ceramic base of the enclosure.Type: ApplicationFiled: December 5, 2008Publication date: August 27, 2009Inventors: Nenad DURICIC, Pierre D. WALL
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Patent number: 6807340Abstract: A dispersion compensator has a linearly chirped fiber Bragg grating mounted at two ends of an elongated, channel-shaped heat distributor. The distributor has two thermo-electric coolers at two ends, a heating strip for uniform heating of the distributor, a temperature sensor mounted on the distributor in the middle of the grating region, and longitudinally variable heating means attached to the distributor and extending along its length for effecting a longitudinally varying heating of the grating region. The provision of the heating strip helps maintain linearity of the thermal gradient of the distributor while the longitudinally variable heaters facilitate relatively fast dithering of the temperature of the grating region.Type: GrantFiled: August 28, 2002Date of Patent: October 19, 2004Assignee: JDS Uniphase Inc.Inventors: Henry Postolek, Graham Ian Duck, Nenad Duricic, Gonzalo de la Puente, Tinko Eftimov, Dan Grobnic, David William Charles Markin, Martin Matthews, Evgueni A. Ponomarev, Serguei Roupassov, Dariusz Sieniawski
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Publication number: 20030142911Abstract: A dispersion compensator has a linearly chirped fiber Bragg grating mounted at two ends of an elongated, channel-shaped heat distributor. The distributor has two thermo-electric coolers at two ends, a heating strip for uniform heating of the distributor, a temperature sensor mounted on the distributor in the middle of the grating region, and longitudinally variable heating means attached to the distributor and extending along its length for effecting a longitudinally varying heating of the grating region. The provision of the heating strip helps maintain linearity of the thermal gradient of the distributor while the longitudinally variable heaters facilitate relatively fast dithering of the temperature of the grating region.Type: ApplicationFiled: August 28, 2002Publication date: July 31, 2003Inventors: Henry Postolek, Graham Ian Duck, Nenad Duricic, Gonzalo de la Puente, Tinko Eftimov, Dan Grobnic, David William Charles Markin, Martin Matthews, Evgueni A. Ponomarev, Serguei Roupassov, Dariusz Sieniawski