Patents by Inventor René Gerrit Heideman
René Gerrit Heideman 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: 8718432Abstract: A method for forming a tapered region in a first layer of a first material is disclosed. The method comprises forming an accelerator layer of a second material on the first layer and forming a mask layer disposed on the accelerator layer. The accelerator layer is exposed to a first etch that removes the second material in a first region and laterally etches the accelerator layer along a second region to expose the first layer in the second region to the first etch. Since the time for which the first layer is exposed to the first etch in the second region is based on the progress of the lateral etch of the accelerator layer, the first etch tapers the first layer in the second region.Type: GrantFiled: April 20, 2012Date of Patent: May 6, 2014Assignee: Octrolix BVInventors: Rene Gerrit Heideman, Marcel Hoekman
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Publication number: 20140105556Abstract: A method for forming a waveguide having a thin-core region, a thick-core region, and a transition region of tapered thickness between them is disclosed. The method comprises forming a lower core layer of a first material on a lower cladding, forming a thin central core layer of a second material on the first core layer, forming an upper core layer of the first material on the central core layer, and etching the upper core layer in an etchant such that it is removed from the thin-core region and its thickness monotonically changes from its as-deposited thickness to extinction across the transition region, where the central core layer protects the lower core layer from exposure to the etchant.Type: ApplicationFiled: October 11, 2013Publication date: April 17, 2014Applicant: Octrolix BVInventors: Rene Gerrit Heideman, Arne Leinse
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Publication number: 20130256138Abstract: A method for forming a microfluidic channel with improved flow characteristics for one or more analytes is disclosed. A microfluidic channel having modified surfaces is formed in a glass layer or glass substrate. The glass surfaces of the microfluidic channel are modified by the addition of a layer of borophosphosilicate glass. The addition of the borophosphosilicate glass results in an improved flow velocity profile of the analyte. As a result, control over the position and movement of analytes within the solution is improved.Type: ApplicationFiled: May 28, 2013Publication date: October 3, 2013Applicant: Octrolix BVInventor: Rene Gerrit Heideman
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Patent number: 8494323Abstract: A system having an optical-coupling region for evanescently coupling light between first and second optical-waveguiding structures is disclosed. Within the optical-coupling region, the first and second optical-waveguiding structures exhibit mirror symmetry with respect to each other across or about at least one of a plane and an axis and include a segment that is not straight.Type: GrantFiled: November 29, 2010Date of Patent: July 23, 2013Assignee: Octrolix BVInventors: Marcel Hoekman, Rene Gerrit Heideman, Albert Prak
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Patent number: 8454811Abstract: A method for forming a microfluidic channel with improved flow characteristics for one or more analytes is disclosed. A microfluidic channel having modified surfaces is formed in fused silica. The fused silica surfaces are modified by the addition of a layer of borophosphosilicate glass. The addition of the borophosphosilicate glass results in an improved flow velocity profile of the analyte. As a result, control over the position and movement of analytes within the solution is improved.Type: GrantFiled: July 14, 2008Date of Patent: June 4, 2013Assignee: Octrolix BVInventor: Rene Gerrit Heideman
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Publication number: 20120257130Abstract: A wavelength filter based on a symmetric PLC circuit comprising an MZ filter-based demultiplexer, a waveguide resonator, and an MZ filter-based multiplexer is presented. The wavelength filter is tuned using pulse width modulated drive signals that enable fine wavelength control resolution. Embodiments in accordance with the present invention attain narrow spectral filtering capability over a wide wavelength tuning range. Further, embodiments in accordance with the present invention mitigate chromatic dispersion.Type: ApplicationFiled: April 7, 2011Publication date: October 11, 2012Applicant: OCTROLIX BVInventors: Edwin Jan Klein, Rene Gerrit Heideman
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Patent number: 8253933Abstract: A sensor for sensing a target chemical with high signal-to-noise ratio is disclosed. In some embodiments, the sensor comprises a sensing region that is optically coupled with an attenuation region. The sensing region receives optical stimulation that comprises light characterized by an excitation wavelength. In response to exposure to the target chemical, the sensing region fluoresces at a fluorescence wavelength. The attenuation region receives light from the fluorescing sensing region that includes light characterized by the fluorescence wavelength (i.e., signal) and light characterized by the excitation wavelength (i.e., noise). The attenuation region conveys the light to a detector that provides an electrical output signal based on the target chemical. While conveying the light, however, the attenuation region improves the signal-to-noise ratio by attenuating light characterized by the excitation wavelength more than light characterized by the fluorescence region.Type: GrantFiled: January 31, 2012Date of Patent: August 28, 2012Assignee: Octrolix B.V.Inventor: Rene Gerrit Heideman
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Patent number: 8254733Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: GrantFiled: February 23, 2010Date of Patent: August 28, 2012Assignee: Octrolix B.V.Inventors: Rene Gerrit Heideman, Ronald Dekker
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Publication number: 20120181451Abstract: A sensor for sensing a target chemical with high signal-to-noise ratio is disclosed. In some embodiments, the sensor comprises a sensing region that is optically coupled with an attenuation region. The sensing region receives optical stimulation that comprises light characterized by an excitation wavelength. In response to exposure to the target chemical, the sensing region fluoresces at a fluorescence wavelength. The attenuation region receives light from the fluorescing sensing region that includes light characterized by the fluorescence wavelength (i.e., signal) and light characterized by the excitation wavelength (i.e., noise). The attenuation region conveys the light to a detector that provides an electrical output signal based on the target chemical. While conveying the light, however, the attenuation region improves the signal-to-noise ratio by attenuating light characterized by the excitation wavelength more than light characterized by the fluorescence region.Type: ApplicationFiled: January 31, 2012Publication date: July 19, 2012Applicant: OCTROLIX BVInventor: Rene Gerrit Heideman
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Patent number: 8195014Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: GrantFiled: February 23, 2010Date of Patent: June 5, 2012Assignee: Octrolix BVInventors: Rene Gerrit Heideman, Ronald Dekker
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Publication number: 20120134628Abstract: A system having an optical-coupling region for evanescently coupling light between first and second optical-waveguiding structures is disclosed. Within the optical-coupling region, the first and second optical-waveguiding structures exhibit mirror symmetry with respect to each other across or about at least one of a plane and an axis and include a segment that is not straight.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Applicant: OCTROLIX BVInventors: Marcel Hoekman, Rene Gerrit Heideman, Albert Prak
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Patent number: 8154716Abstract: A sensor for sensing a target chemical with high signal-to-noise ratio is disclosed. In some embodiments, the sensor comprises a sensing region that is optically coupled with an attenuation region. The sensing region receives optical stimulation that comprises light characterized by an excitation wavelength. In response to exposure to the target chemical, the sensing region fluoresces at a fluorescence wavelength. The attenuation region receives light from the fluorescing sensing region that includes light characterized by the fluorescence wavelength (i.e., signal) and light characterized by the excitation wavelength (i.e., noise). The attenuation region conveys the light to a detector that provides an electrical output signal based on the target chemical. While conveying the light, however, the attenuation region improves the signal-to-noise ratio by attenuating light characterized by the excitation wavelength more than light characterized by the fluorescence region.Type: GrantFiled: September 4, 2009Date of Patent: April 10, 2012Assignee: Octrolix BVInventor: Rene Gerrit Heideman
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Publication number: 20110058158Abstract: A sensor for sensing a target chemical with high signal-to-noise ratio is disclosed. In some embodiments, the sensor comprises a sensing region that is optically coupled with an attenuation region. The sensing region receives optical stimulation that comprises light characterized by an excitation wavelength. In response to exposure to the target chemical, the sensing region fluoresces at a fluorescence wavelength. The attenuation region receives light from the fluorescing sensing region that includes light characterized by the fluorescence wavelength (i.e., signal) and light characterized by the excitation wavelength (i.e., noise). The attenuation region conveys the light to a detector that provides an electrical output signal based on the target chemical. While conveying the light, however, the attenuation region improves the signal-to-noise ratio by attenuating light characterized by the excitation wavelength more than light characterized by the fluorescence region.Type: ApplicationFiled: September 4, 2009Publication date: March 10, 2011Applicant: OCTROLIX BVInventor: Rene Gerrit Heideman
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Patent number: 7885490Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: GrantFiled: March 10, 2008Date of Patent: February 8, 2011Assignee: Octrolix BVInventors: Rene Gerrit Heideman, Ronald Dekker
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Patent number: 7835417Abstract: An apparatus and method are disclosed for decreasing the spectral bandwidth of a semiconductor laser, such as a vertical cavity surface emitting laser.Type: GrantFiled: July 15, 2008Date of Patent: November 16, 2010Assignee: Octrolix BVInventors: Rene Gerrit Heideman, Edwin Jan Klein
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Publication number: 20100150496Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Applicant: OCTROLIX BVInventors: Rene Gerrit Heideman, Ronald Dekker
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Publication number: 20100149523Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Applicant: OCTROLIX BVInventors: Rene Gerrit Heideman, Ronald Dekker
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Publication number: 20100014544Abstract: An apparatus and method are disclosed for decreasing the spectral bandwidth of a semiconductor laser, such as a vertical cavity surface emitting laser.Type: ApplicationFiled: July 15, 2008Publication date: January 21, 2010Applicant: Octrolix BVInventors: Rene Gerrit Heideman, Edwin Jan Klein
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Publication number: 20100006435Abstract: A method for forming a microfluidic channel with improved flow characteristics for one or more analytes is disclosed. A microfluidic channel having modified surfaces is formed in fused silica. The fused silica surfaces are modified by the addition of a layer of borophosphosilicate glass. The addition of the borophosphosilicate glass results in an improved flow velocity profile of the analyte. As a result, control over the position and movement of analytes within the solution is improved.Type: ApplicationFiled: July 14, 2008Publication date: January 14, 2010Applicant: Octrolix BVInventor: Rene Gerrit Heideman
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Publication number: 20090226127Abstract: An apparatus and method for optically detecting the presence of an analyte in a solution is presented. An embodiment comprises a waveguide resonator that is optically coupled to a fluid in a fluidic conduit so that the resonant wavelength of the waveguide resonator is based on the refractive index of the fluid.Type: ApplicationFiled: March 10, 2008Publication date: September 10, 2009Applicant: LioniX BVInventors: Rene Gerrit Heideman, Ronald Dekker