Patents by Inventor Pietro Bernasconi
Pietro Bernasconi 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: 9423560Abstract: A device includes a passive photonic layer located over a substrate and including at least one passive photonic element configured to propagate an optical signal therein. An electronic layer located between said substrate and said passive photonic layer includes at least one electronic device configured to propagate an electrical signal therein. An active photonic layer located over said passive photonic layer includes an active photonic device optically coupled to said passive photonic element and configured to convert between said electrical signal and said optical signal.Type: GrantFiled: December 15, 2011Date of Patent: August 23, 2016Assignee: Alcatel LucentInventors: Long Chen, Pietro Bernasconi, Po Dong, Liming Zhang, Young-Kai Chen
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Patent number: 9369209Abstract: An apparatus comprising a first optical input coupler, having first and second input ports and first and second output ports. The optical input coupler can be configured to receive an optical input signal to the first input port. An optical power level ratio of a second optical output to first optical output transmitted from the second and the first output ports, respectively, equals about 2:1.Type: GrantFiled: March 5, 2013Date of Patent: June 14, 2016Assignee: Alcatel LucentInventor: Pietro Bernasconi
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Patent number: 9164300Abstract: A system, e.g. a reconfigurable electro-optical network, includes input and output waveguides. The input waveguide is configured to receive a first input optical signal including a first modulated input wavelength channel. The output waveguide is configured to receive a carrier signal including an unmodulated output wavelength channel. An input microcavity resonator is configured to derive a modulated electrical control signal from the modulated input wavelength channel. A first output microcavity resonator is configured to modulate the output wavelength channel in response to the control signal.Type: GrantFiled: March 13, 2013Date of Patent: October 20, 2015Assignee: Alcatel LucentInventors: Pietro Bernasconi, Po Dong, David T. Neilson, Young-Kai Chen
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Patent number: 8942518Abstract: An apparatus comprising a cascaded set of deinterleavers. A first optical deinterleaver is configured to receive a first optical signal and a second optical signal. A second optical deinterleaver is configured to receive the second optical signal and a first optical output of the first optical deinterleaver. A third optical deinterleaver is configured to receive a second optical output of the first optical deinterleaver. The apparatus comprises an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver.Type: GrantFiled: March 5, 2013Date of Patent: January 27, 2015Assignee: Alcatel LucentInventor: Pietro Bernasconi
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Publication number: 20140003760Abstract: A system, e.g. a reconfigurable electro-optical network, includes input and output waveguides. The input waveguide is configured to receive a first input optical signal including a first modulated input wavelength channel. The output waveguide is configured to receive a carrier signal including an unmodulated output wavelength channel. An input microcavity resonator is configured to derive a modulated electrical control signal from the modulated input wavelength channel. A first output microcavity resonator is configured to modulate the output wavelength channel in response to the control signal.Type: ApplicationFiled: March 13, 2013Publication date: January 2, 2014Applicant: Alcatel-Lucent USA Inc.Inventors: Pietro Bernasconi, Po Dong, David T. Neilson, Young-Kai Chen
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Publication number: 20140003810Abstract: A system, e.g. a reconfigurable optical channel router, includes an input waveguide optically connected to a wavelength demultiplexer. A first input microcavity resonator set including a plurality of microcavity resonators is located adjacent the input waveguide. The microcavity resonators are configured to controllably couple to a corresponding one of a plurality of frequency channels of an optical signal propagating within said input waveguide.Type: ApplicationFiled: March 13, 2013Publication date: January 2, 2014Inventors: Po Dong, David T. Neilson, Pietro Bernasconi, Young-Kai Chen
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Publication number: 20130251302Abstract: An apparatus comprising a cascaded set of deinterleavers. A first optical deinterleaver is configured to receive a first optical signal and a second optical signal. A second optical deinterleaver is configured to receive the second optical signal and a first optical output of the first optical deinterleaver. A third optical deinterleaver is configured to receive a second optical output of the first optical deinterleaver. The apparatus comprises an optical power splitter configured to provide the second optical signal received by the first optical deinterleaver and by the second optical deinterleaver.Type: ApplicationFiled: March 5, 2013Publication date: September 26, 2013Applicant: ALCATEL-LUCENT USA, INC.Inventor: Pietro Bernasconi
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Publication number: 20130230320Abstract: An apparatus comprising a first optical input coupler, having first and second input ports and first and second output ports. The optical input coupler can be configured to receive an optical input signal to the first input port. An optical power level ratio of a second optical output to first optical output transmitted from the second and the first output ports, respectively, equals about 2:1.Type: ApplicationFiled: March 5, 2013Publication date: September 5, 2013Applicant: ALCATEL-LUCENT USA, INC.Inventor: Pietro Bernasconi
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Patent number: 8521027Abstract: A demultiplexer and a method of demultiplexing a multiplex of spatially separable multiple wavelength streams, where an incoming multiplex of multiple wavelength streams is separated into a first stream of wavelengths and a second stream of wavelengths according to at least one predetermined separation criterion. The first stream and the second stream are respectively input into a first and a second input port of a multi-input port, multi-output port frequency demultiplexer where the first stream and the second stream are separated into a first group of single wavelengths and a second group of single wavelengths respectively. The first group of single wavelengths is coupled to respective output ports and the second group of single wavelengths are coupled to respective output ports.Type: GrantFiled: May 4, 2010Date of Patent: August 27, 2013Assignee: Alcatel LucentInventor: Pietro Bernasconi
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Publication number: 20130156364Abstract: A device includes a passive photonic layer located over a substrate and including at least one passive photonic element configured to propagate an optical signal therein. An electronic layer located between said substrate and said passive photonic layer includes at least one electronic device configured to propagate an electrical signal therein. An active photonic layer located over said passive photonic layer includes an active photonic device optically coupled to said passive photonic element and configured to convert between said electrical signal and said optical signal.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Applicant: Alcatel-Lucent USA, Inc.Inventors: Long Chen, Pietro Bernasconi, Po Dong, Liming Zhang, Young-Kai Chen
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Patent number: 8260142Abstract: In communications where synchronization of optical signals containing data is required, a multi-channel optical arrayed time buffer may be used. The time buffer includes multiple delay paths comprising delay elements, some of which can be shared to dispense different delays. In an embodiment, an arrayed waveguide grating (AWG) is illustratively used to route an optical signal to a first delay path, which is returnable to the AWG through the first delay path to be rerouted to a second delay path. The total delay affordable to the optical signal is a function of at least a first delay afforded by a delay element in the first delay path, and a second delay afforded by a delay element in the second delay path. In addition, without returning to the AWG, another optical signal may be routed through the second delay path alone to be afforded the second delay only.Type: GrantFiled: June 29, 2009Date of Patent: September 4, 2012Assignee: Alcatel LucentInventor: Pietro Bernasconi
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Publication number: 20110085802Abstract: In optical signal transmission, multiple sets of optical signals which contain data and are associated with at least two polarization states are multiplexed using a single arrayed waveguide grating (AWG). The resulting multiplexed signals are then polarization-multiplexed for transmission. In one embodiment, the AWG is provisioned in a unidirectional mode to multiplex the multiple sets of optical signals. In another embodiment, the AWG is provisioned in a bidirectional mode to multiplex the multiple sets of optical signals.Type: ApplicationFiled: October 13, 2009Publication date: April 14, 2011Inventor: Pietro Bernasconi
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Publication number: 20100329672Abstract: In communications where synchronization of optical signals containing data is required, a multi-channel optical arrayed time buffer may be used. The time buffer includes multiple delay paths comprising delay elements, some of which can be shared to dispense different delays. In an embodiment, an arrayed waveguide grating (AWG) is illustratively used to route an optical signal to a first delay path, which is returnable to the AWG through the first delay path to be rerouted to a second delay path. The total delay affordable to the optical signal is a function of at least a first delay afforded by a delay element in the first delay path, and a second delay afforded by a delay element in the second delay path. In addition, without returning to the AWG, another optical signal may be routed through the second delay path alone to be afforded the second delay only.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Inventor: Pietro Bernasconi
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Publication number: 20100303463Abstract: A demultiplexer and a method of demultiplexing a multiplex of spatially separable multiple wavelength streams, where an incoming multiplex of multiple wavelength streams is separated into a first stream of wavelengths and a second stream of wavelengths according to at least one predetermined separation criterion. The first stream and the second stream are respectively input into a first and a second input port of a multi-input port, multi-output port frequency demultiplexer where the first stream and the second stream are separated into a first group of single wavelengths and a second group of single wavelengths respectively. The first group of single wavelengths is coupled to respective output ports and the second group of single wavelengths are coupled to respective output ports.Type: ApplicationFiled: May 4, 2010Publication date: December 2, 2010Inventor: Pietro Bernasconi
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Publication number: 20080242062Abstract: Diverse semiconductor structures are fabricated on a single substrate or wafer by using a non-selective area growth technique involving deposition of material over the entire substrate. The fabricated structures are obtained by selective removal of portions of the deposited material layers. Single level and multi-level structures are possible.Type: ApplicationFiled: March 31, 2007Publication date: October 2, 2008Applicant: LUCENT TECHNOLOGIES INC.Inventors: Pietro BERNASCONI, Asish BHARDWAJ, David NEILSON, Liming ZHANG
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Patent number: 7369719Abstract: A monolithically integrated tunable wavelength converter and variable optical delay device(s) that is capable of providing optical delay(s) of any length. Advantageously, our devices are both compact and readily realized as a photonic integrated circuit (PIC) on a semiconductor substrate.Type: GrantFiled: February 27, 2006Date of Patent: May 6, 2008Assignee: Lucent Technologies Inc.Inventors: Pietro Bernasconi, David Neilson
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Publication number: 20070201789Abstract: A monolithically integrated tunable wavelength converter and variable optical delay device(s) that is capable of providing optical delay(s) of any length. Advantageously, our devices are both compact and readily realized as a photonic integrated circuit (PIC) on a semiconductor substrate.Type: ApplicationFiled: February 27, 2006Publication date: August 30, 2007Applicant: LUCENT TECHNOLOGIES INCInventors: PIETRO BERNASCONI, DAVID NEILSON
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Publication number: 20070153845Abstract: A tunable laser module having two or more tunable lasers exhibiting different, possibly contiguous or partially overlapping wavelength regions. The lasers are integrated into a single package, thereby extending a total wavelength range for the package that is substantially beyond that covered by a single laser while—at the same time—providing gap-free wavelength range coverage. Of further advantage, the laser module employs a locking mechanism that is relatively immune from backscatter.Type: ApplicationFiled: December 31, 2005Publication date: July 5, 2007Applicant: LUCENT TECHNOLOGIES INC.Inventors: PIETRO BERNASCONI, CHRISTOPHER R. DOERR, DAVID NEILSON, JOHN SIMSARIAN
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Publication number: 20050169567Abstract: An InP on-chip polarization splitter is proposed base on an arrayed waveguide grating that is composed of waveguides having birefringence. The present invention also performs channel filtering and demultiplexing that is useful in WDM/DWDM applications. The required waveguide structure is formed using active-passive monolithic integration platforms, providing the integration of the polarization splitter with active devices as well as passive devices.Type: ApplicationFiled: February 2, 2004Publication date: August 4, 2005Inventors: Pietro Bernasconi, Weiguo Yang
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Publication number: 20050002424Abstract: A high power multi-frequency laser includes a laser cavity defined by reflective elements, a frequency routing device in the cavity comprising a plurality of frequency selective pathways, a first set of optical amplifiers optically coupled to a first end of the frequency routing device, and a second set of optical amplifiers optically coupling a second end of the frequency routing device and a first one of the reflective elements. The high power multi-frequency laser further includes a power combiner. The power combiner is optically coupled to the first set of optical amplifiers and a second one of the reflective elements and combines the outputs of the first set of optical amplifiers such that a common output for the multi-frequency laser is provided. The common output of the present invention provides a single output from the multi-frequency laser having a high output coupling efficiency.Type: ApplicationFiled: July 1, 2003Publication date: January 6, 2005Inventors: Pietro Bernasconi, Barry Miller, Nicholas Sauer, Lawrence Stulz, Dries Thourhout, Weiguo Yang, Liming Zhang