Patents by Inventor Wenhua Lin
Wenhua Lin 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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Publication number: 20200252133Abstract: Embodiments may relate to an optical transmitter that includes a laser to produce an optical signal, and a modulator to encode data into the optical signal to produce an optical data signal. The optical transmitter may further include an amplifier that is to amplify a power of the optical data signal to produce an output signal. Other embodiments may be described or claimed.Type: ApplicationFiled: April 21, 2020Publication date: August 6, 2020Applicant: Intel CorporationInventors: Jin Hong, Wenhua Lin
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Patent number: 10718906Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a multiplexer and/or demultiplexer with an input and/or output optical waveguide including one or more waveguide segments tapered according to a non-linear function such as a curve. In embodiments, the one or more waveguide segments is tapered according to, e.g., a quadratic function, a parabolic function, or an exponential function. In accordance with some embodiments, the tapered segment assists in spatially dispersing the propagating light along a substantially uniform phase wavefront at a mirror that includes an echelle grating surface that is shaped to receive/reflect the light at the substantially uniform phase wavefront. In embodiments, the one or more waveguide segments is tapered according to a curve to receive a portion of light from the substantially uniform phase wavefront at the echelle grating surface. Additional embodiments may be described and claimed.Type: GrantFiled: December 28, 2018Date of Patent: July 21, 2020Assignee: Intel CorporationInventor: Wenhua Lin
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Publication number: 20200174514Abstract: Methods, apparatuses, and systems are described herein to compensate for a skew effect that occurs in an optical signal generated in response to an electrical to optical (E/O) conversion of an electrical signal carrying data received from a driver. A skew control device coupled with a driver or a modulator provides a skew to the electric signal prior to E/O conversion to compensate for the skew effect. The skew may be provided by a reverse-biased p-n junction diode. Other embodiments may be described and/or claimed.Type: ApplicationFiled: February 3, 2020Publication date: June 4, 2020Inventors: Siamak Amiralizadeh Asl, Syed S. Islam, Wenhua Lin
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Patent number: 10591671Abstract: Some embodiments of the present disclosure describe an apparatus for III/V-Si taper coupling, including a III/V-Si taper coupler with one end to receive a laser beam where the one end has at least one surface at a non-perpendicular angle with respect to a direction of the laser beam, and where the at least one surface forms one or more tips at the one end of the III/V-Si taper coupler. The one end is positioned so that the one or more tips are outside the laser beam to reduce reflection of laser beam away from the one end of the III/V-Si taper coupler.Type: GrantFiled: December 28, 2018Date of Patent: March 17, 2020Assignee: Intel CorporationInventors: Wenhua Lin, Kimchau N. Nguyen
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Publication number: 20190158209Abstract: There is disclosed in one example a fiberoptic communication circuit for wavelength division multiplexing (WDM) communication, including: an incoming waveguide to receive an incoming WDM laser pulse; an intermediate slab including a demultiplexer circuit to isolate n discrete modes from the incoming WDM laser pulse; n outgoing waveguides to receive the n discrete modes, the outgoing waveguides including fully-etched rib-to-channel waveguides; and an array of n photodetectors to detect the n discrete modes.Type: ApplicationFiled: December 28, 2018Publication date: May 23, 2019Applicant: Intel CorporationInventors: Wenhua Lin, Judson Douglas Ryckman, Ling Liao, Kelly Christopher Magruder, Harel Frish, Assia Barkai, Han-din Liu, Yimin Kang
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Publication number: 20190137688Abstract: Some embodiments of the present disclosure describe an apparatus for III/V-Si taper coupling, including a III/V-Si taper coupler with one end to receive a laser beam where the one end has at least one surface at a non-perpendicular angle with respect to a direction of the laser beam, and where the at least one surface forms one or more tips at the one end of the III/V-Si taper coupler. The one end is positioned so that the one or more tips are outside the laser beam to reduce reflection of laser beam away from the one end of the III/V-Si taper coupler.Type: ApplicationFiled: December 28, 2018Publication date: May 9, 2019Inventors: Wenhua Lin, Kimchau N. Nguyen
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Publication number: 20190137691Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a multiplexer and/or demultiplexer with an input and/or output optical waveguide including one or more waveguide segments tapered according to a non-linear function such as a curve. In embodiments, the one or more waveguide segments is tapered according to, e.g., a quadratic function, a parabolic function, or an exponential function. In accordance with some embodiments, the tapered segment assists in spatially dispersing the propagating light along a substantially uniform phase wavefront at a mirror that includes an echelle grating surface that is shaped to receive/reflect the light at the substantially uniform phase wavefront. In embodiments, the one or more waveguide segments is tapered according to a curve to receive a portion of light from the substantially uniform phase wavefront at the echelle grating surface. Additional embodiments may be described and claimed.Type: ApplicationFiled: December 28, 2018Publication date: May 9, 2019Inventor: Wenhua LIN
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Publication number: 20190129095Abstract: Embodiments may relate to a silicon photonic chip, and particularly a back absorber within the silicon photonic chip. The back absorber may include a substrate material with a slab portion that includes a doped portion of the substrate material. The back absorber may be positioned at the backside of a laser that is configured to project light along a waveguide of the silicon photonic chip. Other embodiments may be described or claimed.Type: ApplicationFiled: December 11, 2018Publication date: May 2, 2019Applicant: Intel CorporationInventors: Kimchau Nhu Nguyen, George A. Ghiurcan, Yoel Chetrit, Jeffrey B. Driscoll, Richard Jones, Harel Frish, Reece A. Defrees, Wenhua Lin, Jung S. Park
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Patent number: 10197737Abstract: Embodiments of the present disclosure are directed toward an optical apparatus that includes a semiconductor layer to propagate light from at least one light source. The optical apparatus may further include a curved echelle grating with a plurality of grating teeth, the echelle grating at an outer side of the semiconductor layer. The curved echelle grating may include a plurality of grating teeth, and a grating tooth of the plurality of grating teeth may have a grating facet and a shadow facet. A shadow facet may have an angle of grating greater than 0 degrees with respect to a normal of a curve of the curved echelle grating. Other embodiments may be described and/or claimed.Type: GrantFiled: September 28, 2017Date of Patent: February 5, 2019Assignee: Intel CorporationInventor: Wenhua Lin
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Publication number: 20180364418Abstract: Embodiments of the present disclosure are directed toward an optical apparatus that includes a semiconductor layer to propagate light from at least one light source. The optical apparatus may further include a curved echelle grating with a plurality of grating teeth, the echelle grating at an outer side of the semiconductor layer. The curved echelle grating may include a plurality of grating teeth, and a grating tooth of the plurality of grating teeth may have a grating facet and a shadow facet. A shadow facet may have an angle of grating greater than 0 degrees with respect to a normal of a curve of the curved echelle grating. Other embodiments may be described and/or claimed.Type: ApplicationFiled: September 28, 2017Publication date: December 20, 2018Inventor: Wenhua Lin
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Patent number: 9395494Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a semiconductor layer to propagate light and a mirror disposed inside the semiconductor layer and having echelle grating reflective surface to substantially totally internally reflect the propagating light inputted by one or more input waveguides, to be received by one or more output waveguides. The waveguides may be disposed in the semiconductor layer under a determined angle relative to the mirror reflective surface. The determined angle may be equal to or greater than a total internal reflection angle corresponding to the interface, to provide substantially total internal reflection of light by the mirror. The mirror may be formed by an interface of the semiconductor layer comprising the mirror reflective surface and another medium filling the mirror, such as a dielectric. Other embodiments may be described and/or claimed.Type: GrantFiled: December 16, 2015Date of Patent: July 19, 2016Assignee: Intel CorporationInventors: Mahesh Krishnamurthi, I-Wei Hsieh, Haisheng Rong, Oshrit Harel, Harel Frish, Assia Barkai, Wenhua Lin
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Publication number: 20160103282Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a semiconductor layer to propagate light and a mirror disposed inside the semiconductor layer and having echelle grating reflective surface to substantially totally internally reflect the propagating light inputted by one or more input waveguides, to be received by one or more output waveguides. The waveguides may be disposed in the semiconductor layer under a determined angle relative to the mirror reflective surface. The determined angle may be equal to or greater than a total internal reflection angle corresponding to the interface, to provide substantially total internal reflection of light by the mirror. The mirror may be formed by an interface of the semiconductor layer comprising the mirror reflective surface and another medium filling the mirror, such as a dielectric. Other embodiments may be described and/or claimed.Type: ApplicationFiled: December 16, 2015Publication date: April 14, 2016Inventors: MAHESH KRISHNAMURTHI, I-WEI HSIEH, HAISHENG RONG, OSHRIT HAREL, HAREL FRISH, ASSIA BARKAI, WENHUA LIN
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Patent number: 9250388Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a semiconductor layer to propagate light and a mirror disposed inside the semiconductor layer and having echelle grating reflective surface to substantially totally internally reflect the propagating light inputted by one or more input waveguides, to be received by one or more output waveguides. The waveguides may be disposed in the semiconductor layer under a determined angle relative to the mirror reflective surface. The determined angle may be equal to or greater than a total internal reflection angle corresponding to the interface, to provide substantially total internal reflection of light by the mirror. The mirror may be formed by an interface of the semiconductor layer comprising the mirror reflective surface and another medium filling the mirror, such as a dielectric. Other embodiments may be described and/or claimed.Type: GrantFiled: July 17, 2014Date of Patent: February 2, 2016Assignee: INTEL CORPORATIONInventors: Mahesh Krishnamurthi, I-Wei Hsieh, Haisheng Rong, Oshrit Harel, Harel Frish, Assia Barkai, Wenhua Lin
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Publication number: 20160018595Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical device having a semiconductor layer to propagate light and a mirror disposed inside the semiconductor layer and having echelle grating reflective surface to substantially totally internally reflect the propagating light inputted by one or more input waveguides, to be received by one or more output waveguides. The waveguides may be disposed in the semiconductor layer under a determined angle relative to the mirror reflective surface. The determined angle may be equal to or greater than a total internal reflection angle corresponding to the interface, to provide substantially total internal reflection of light by the mirror. The mirror may be formed by an interface of the semiconductor layer comprising the mirror reflective surface and another medium filling the mirror, such as a dielectric. Other embodiments may be described and/or claimed.Type: ApplicationFiled: July 17, 2014Publication date: January 21, 2016Inventors: MAHESH KRISHNAMURTHI, I-WEI HSIEH, HAISHENG RONG, OSHRIT HAREL, HAREL FRISH, ASSIA BARKAI, WENHUA LIN
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Patent number: 8137572Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.Type: GrantFiled: October 12, 2009Date of Patent: March 20, 2012Assignee: Enablence USA Components Inc.Inventors: HongZhen Wei, Ray Liang, Wenhua Lin, Ted Chen, Jacob Sun
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Patent number: 7933478Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.Type: GrantFiled: August 27, 2008Date of Patent: April 26, 2011Assignee: Enablence USA Components Inc.Inventors: HongZhen Wei, Ray Liang, Wenhua Lin, Ted Chen, Jacob Sun
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Patent number: 7840104Abstract: A multiplexing AWG device capable of producing an ultra-wideband, low ripple, flat-top signal is presented. The AWG device includes an AWG unit and a two-section waveguide coupled to the AWG unit. The two-section waveguide has a first section and a second section. The first section produces a signal having a double-peak field profile and has a first input end and a first output end. The second section reduces the phase variation of the signal having the double-peak field profile exiting the first section. The second section has a second input end that is coupled to the first output end. For example, the first section may be a parabolic tapered waveguide and the second section may be a rectangular waveguide.Type: GrantFiled: July 13, 2007Date of Patent: November 23, 2010Assignee: Enablence USA Components, Inc.Inventors: Saurav Das, Boris Grek, Wenhua Lin
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Patent number: 7805037Abstract: The multiplexer includes multi-mode waveguides positioned on a base such that a plurality of the waveguides serve as input waveguides and one or more of the waveguides serve as an output waveguide. The waveguides intersect one another such that light signals traveling along a plurality of the input waveguides are combined onto an output waveguide. At least a portion of the input waveguides including a taper configured to taper the width of a light signal traveling along the input waveguide toward the output waveguide.Type: GrantFiled: August 19, 2003Date of Patent: September 28, 2010Assignee: Kotura, Inc.Inventors: Frederik Marcel Van Der Vliet, Joan Fong, Dazeng Feng, Wenhua Lin
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Publication number: 20100025361Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.Type: ApplicationFiled: October 12, 2009Publication date: February 4, 2010Inventors: HongZhen WEI, Ray Liang, Wenhua Lin, Ted Chen, Jacob Sun
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Publication number: 20090214170Abstract: A method of making a planar lightwave circuit (PLC) waveguide capable of being integrated with a surface-mounted component is presented. The method entails etching a silicon substrate to form a slanted wall, forming a nonreflective waveguide portion on the silicon substrate, and depositing a reflective layer on the slanted wall. Light travels through the nonreflective waveguide portion in substantially a first direction, and the light from the nonreflective waveguide portion strikes the reflective layer to be redirected in a second direction. The second direction may be the direction toward the surface-mounted component. A PLC waveguide device made with the above method is also presented.Type: ApplicationFiled: August 27, 2008Publication date: August 27, 2009Inventors: HongZhen Wei, Ray Liang, Wenhua Lin, Ted Chen, Jacob Sun