Patents by Inventor Michael Chung-Yi Huang
Michael Chung-Yi Huang 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: 20140353583Abstract: A photodetector is provided with a high contrast grating (HCG) reflector first reflector that has a two dimensional periodic structure. The two dimensional structure is a periodic structure that is a symmetric structure with periodic repeating. The symmetrical structure provides that polarization modes of light are undistinguishable. A second reflector is in an opposing relationship to the first reflector. A tunable optical cavity is between the first and second reflectors. An active region is positioned in the cavity between the first and second reflectors. The photodetector is polarization independent. An MQW light absorber is included converts light to electrons.Type: ApplicationFiled: May 29, 2014Publication date: December 4, 2014Applicants: BANDWIDTH10, INC., THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Connie Chang-Hasnain, Li Zhu, Weijian Yang, Christopher Chase, Yi Rao, Michael Chung-Yi Huang
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Publication number: 20140353530Abstract: A dual usage HCG VCSEL detector is provided with a high contrast grating (HCG) reflector first reflector that has a two dimensional periodic structure. The two dimensional structure is a periodic structure that is a symmetric structure with periodic repeating. The symmetrical structure provides that polarization modes of light are undistinguishable. A second reflector is in an opposing relationship to the first reflector. A tunable optical cavity is between the first and second reflectors. An active region is positioned in the cavity between the first and second reflectors. The photodetector is polarization independent. An MQW light absorber is included converts light to electrons. A dual usage HCG VCSEL-detector includes a high contrast grating (HCG) reflector first reflector, and a second reflector in an opposing relationship to the first reflector. A tunable optical cavity is between the first and second reflectors. An active region is positioned in the cavity between the first and second reflectors.Type: ApplicationFiled: May 29, 2014Publication date: December 4, 2014Applicants: BANDWIDTH10, INC., THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Connie Chang-Hasnain, Li Zhu, Weijian Yang, Christopher Chase, Yi Rao, Michael Chung-Yi Huang
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Patent number: 8442374Abstract: Optical waveguides using segmented periodically-spaced high contrast gratings bounding a hollow core propagation region on at least two sides. Incident light is received in a hollow waveguide (HW) region (core) between opposing HCG faces which provide lateral confinement in response to glancing reflections of the incident light beam from high refractive index segments of the HCG as it traverses the core. Embodiments are described for planar waveguides (1D) having a planar core between two planar HCGs, as well as 2D waveguides, such as having rectangular segments of the HCG through which light is propagated. Additionally, other configurations of HCG-HW, including those having arbitrary incidence and azimuth, angled HCG segments, propagation in a direction which is transverse, or alternatively parallel, to the segments of the HCG.Type: GrantFiled: May 17, 2011Date of Patent: May 14, 2013Assignee: The Regents of the University of CaliforniaInventors: Connie Chang-Hasnain, Ye Zhou, Vadim Karagodsky, Forrest G. Sedgwick, Michael Chung-Yi Huang
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Patent number: 8189643Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.Type: GrantFiled: June 7, 2010Date of Patent: May 29, 2012Assignee: The Regents of the University of CaliforniaInventors: Connie J. Chang-Hasnain, Michael Chung-Yi Huang, Ye Zhou, Carlos Fernando Rondina Mateus
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Publication number: 20110280533Abstract: Optical waveguides using segmented periodically-spaced high contrast gratings bounding a hollow core propagation region on at least two sides. Incident light is received in a hollow waveguide (HW) region (core) between opposing HCG faces which provide lateral confinement in response to glancing reflections of the incident light beam from high refractive index segments of the HCG as it traverses the core. Embodiments are described for planar waveguides (1D) having a planar core between two planar HCGs, as well as 2D waveguides, such as having rectangular segments of the HCG through which light is propagated. Additionally, other configurations of HCG-HW, including those having arbitrary incidence and azimuth, angled HCG segments, propagation in a direction which is transverse, or alternatively parallel, to the segments of the HCG.Type: ApplicationFiled: May 17, 2011Publication date: November 17, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Connie Chang-Hasnain, Ye Zhou, Vadim Karagodsky, Forrest G. Sedgwick, Michael Chung-Yi Huang
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Patent number: 8059690Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.Type: GrantFiled: June 7, 2010Date of Patent: November 15, 2011Assignee: The Regents of the University of CaliforniaInventors: Connie J. Chang-Hasnain, Michael Chung-Yi Huang, Ye Zhou, Carlos Fernando Rondina Mateus
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Publication number: 20100316079Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.Type: ApplicationFiled: June 7, 2010Publication date: December 16, 2010Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Connie J. Chang-Hasnain, Michael Chung-Yi Huang, Ye Zhou, Carlos Fernando Rondina Mateus
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Publication number: 20100316083Abstract: A vertical cavity surface emitting laser (VCSEL) is described using a sub-wavelength grating (SWG) structure that has a very broad reflection spectrum and very high reflectivity. The grating comprises segments of high and low refractive index materials with an index differential between the high and low index materials. By way of example, a SWG reflective structure is disposed over a low index cavity region and above another reflective layer (either SWG or DBR). In one embodiment, the SWG structure is movable, such as according to MEMS techniques, in relation to the opposing reflector to provide wavelength selective tuning. The SWG-VCSEL design is scalable to form the optical cavities for a range of SWG-VCSELs at different wavelengths, and wavelength ranges.Type: ApplicationFiled: June 7, 2010Publication date: December 16, 2010Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Connie J. Chang-Hasnain, Michael Chung-Yi Huang, Ye Zhou, Carlos Fernando Rondina Mateus
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Patent number: 7304781Abstract: A sub-wavelength grating structure that has a very broad reflection spectrum and very high reflectivity comprising segments made of high refractive index material disposed on a layer of low refractive index material and a low refractive index material disposed above and between the segments. The index differential between the high and low index materials determines the bandwidth and modulation depth. The larger difference in refractive indices gives rise to wider reflection bands. The reflection is sensitive to parameters such as the grating period, the grating thickness, the duty cycle of the grating, the refractive index and the thickness of the low index layer underneath the grating. The design is scalable for different wavelengths, and facilitates monolithic integration of optoelectronic devices at a wide range of wavelengths from visible to far infrared.Type: GrantFiled: June 29, 2006Date of Patent: December 4, 2007Assignee: The Regents of the University of CaliforniaInventors: Connie J. Chang-Hasnain, Carlos Fernando Rondina Mateus, Michael Chung-Yi Huang