Patents Assigned to Digital Optics Corporation
-
Publication number: 20060262816Abstract: A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.Type: ApplicationFiled: July 25, 2006Publication date: November 23, 2006Applicant: DIGITAL OPTICS CORPORATIONInventors: Alan Kathman, John Hammond, Robert Te Kolste, Alvaro Cabrera
-
Patent number: 7092416Abstract: A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.Type: GrantFiled: September 15, 2003Date of Patent: August 15, 2006Assignee: Digital Optics CorporationInventors: Alan Kathman, John Barnett Hammond, Robert Te Kolste, Alvaro Cruz Cabrera
-
Publication number: 20060166144Abstract: A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high efficiency diffractive structure, the anti-reflective structure and/or the base diffractive structure are altered from their ideal solo structure to provide both the desired performance and minimize reflections.Type: ApplicationFiled: March 29, 2006Publication date: July 27, 2006Applicant: DIGITAL OPTICS CORPORATIONInventors: Robert Te Kolste, Michael Feldman
-
Publication number: 20050205762Abstract: An optical transceiver includes at least one light source and at least one detector mounted on the same surface of the same substrate. The detector is to receive light from other than a light source on the surface. At least one of the light source and the detector is mounted on the surface. An optics block having optical elements for each light source and detectors is attached via a vertical spacer to the substrate. Electrical interconnections for the light source and the detector are accessible from the same surface of the substrate with the optics block attached thereto. One of the light source and the detector may be monolithically integrated into the substrate.Type: ApplicationFiled: May 12, 2005Publication date: September 22, 2005Applicant: DIGITAL OPTICS CORPORATIONInventors: Michael Feldman, James Morris, Joseph De Bartolo
-
Patent number: 6943890Abstract: A compact interferometer includes a substrate having opposing faces and a suppression feature on one of the faces of the substrate. The suppression feature suppresses higher order reflections inside the substrate. The suppression feature may be an absorptive coating. The interferometer produces high throughput, high contrast signals when receiving light at normal or near normal incidence.Type: GrantFiled: September 5, 2002Date of Patent: September 13, 2005Assignee: Digital Optics CorporationInventor: Robert Te Kolste
-
Publication number: 20050128540Abstract: A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a preselected spatial energy distribution at the output plane. Thus, the illuminated portion of the output plane has a shape predetermined by the designer of the homogenizer.Type: ApplicationFiled: January 13, 2005Publication date: June 16, 2005Applicant: DIGITAL OPTICS CORPORATIONInventors: Alan Kathman, Michael Feldman
-
Publication number: 20050094276Abstract: A passive optical element is transferred into a substrate already having features with a vertical dimension thereon. The features may be another passive optical element, an active optical element, a dichroic layer, a dielectric layer, alignment features, metal portions. A protective layer is provided over the feature during the transfer of the optical element. One or more of these processes may be performed on a wafer level.Type: ApplicationFiled: December 7, 2004Publication date: May 5, 2005Applicant: DIGITAL OPTICS CORPORATIONInventors: Thomas Suleski, Robert Boye, William Delaney, Harris Miller, James Morris, Hongtao Han, Jay Mathews
-
Publication number: 20050047748Abstract: An array of micro-optical components includes at least two micro-optical components. Each micro-optical component includes a refractive surface and a corresponding compensation surface for the refractive surface. The corresponding compensation surface includes a corresponding compensation feature when the refractive surface deviates from a desired optical performance. The micro-optical component provides the desired optical performance. At least two refractive surfaces of the array of micro-optical components are formed to have substantially a same desired optical performance. The array of micro-optical components includes at least one corresponding compensation feature, at least two compensation surfaces of the array of micro-optical components being different from one another. The compensation surface may be created after measuring the refractive surface.Type: ApplicationFiled: October 4, 2004Publication date: March 3, 2005Applicant: DIGITAL OPTICS CORPORATIONInventors: James Morris, Michael Feldman
-
Publication number: 20050035463Abstract: A structure having an optical element thereon has a portion of the structure extending beyond a region having the optical element in at least one direction. The structure may include an active optical element, with the different dimensions of the substrates forming the structure allowing access for the electrical interconnections for the active optical elements. Different dicing techniques may be used to realize the uneven structures.Type: ApplicationFiled: September 21, 2004Publication date: February 17, 2005Applicant: DIGITAL OPTICS CORPORATIONInventors: Alan Kathman, Hongtao Han, Jay Mathews, John Hammond
-
Publication number: 20040146077Abstract: A wavelength locker for use at more than one wavelength includes filters with different characteristics for a corresponding detector. The filters may be etalons having different free spectral ranges, e.g., having different apparent or real thicknesses. If more than three such filters are used outputting offset periodic signals, a reference detector may be eliminated and continuous operation over a wavelength range may be realized.Type: ApplicationFiled: September 15, 2003Publication date: July 29, 2004Applicant: Digital Optics CorporationInventors: Alan Kathman, John Barnett Hammond, Robert Te Kolste, Alvaro Cruz Cabrera
-
Patent number: 6741380Abstract: An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers. An active element having a characteristic which changes in response to an applied field may be integrated on a bottom surface of the wafers. The resulting optical system may present a high numerical aperture. Preferably, one of the optical elements is a refractive element formed in a material having a high index of refraction.Type: GrantFiled: November 19, 2002Date of Patent: May 25, 2004Assignee: Digital Optics CorporationInventors: Michael R Feldman, Alan D Kathman, William H Welch
-
Patent number: 6661818Abstract: An etalon used in analyzing a wavelength of a light source includes ant etalon only in a portion of a substrate in which the etalon is integrated. Use of such an etalon in monitoring or controlling the wavelength allows the etalon to be placed in an application beam. A portion of the application beam is split into at least two beams, a first beam being directed to the etalon to monitor the wavelength, and the other beam either serving purely as a reference beam or passing through another etalon having a different optical path length than the etalon for the first beam, thereby also monitoring the wavelength. The monitor itself would include at least two photodetector, one for each of the beam split off of the input beam. Any or all substrates containing the elements for the monitor may be created on a wafer level and diced and/or bonded to other wafers containing other elements and diced.Type: GrantFiled: April 5, 2000Date of Patent: December 9, 2003Assignee: Digital Optics CorporationInventors: Michael R. Feldman, Hongtao Han, John Barnett Hammond
-
Patent number: 6610166Abstract: Integrated multiple optical elements may be formed by bonding substrates containing such optical elements together or by providing optical elements on either side of the wafer substrate. The wafer is subsequently diced to obtain the individual units themselves. The optical elements may be formed lithographically, directly, or using a lithographically generated master to emboss the elements. Alignment features facilitate the efficient production of such integrated multiple optical elements, as well as post creation processing thereof on the wafer level.Type: GrantFiled: February 14, 2000Date of Patent: August 26, 2003Assignee: Digital Optics CorporationInventors: Brian Harden, Alan Kathman, Michael Feldman
-
Patent number: 6600845Abstract: An integrated parallel transmitter includes an array of light sources, a corresponding array of diffractive elements splitting off a portion of the beam to be monitored, a corresponding array of power monitors for respectively monitoring each light source, and an array of couplers that couples light into a corresponding waveguide. The coupler is preferably a phase-matched coupler. All of the passive optical elements are integrated onto a single substrate or a plurality of substrates that have been bonded together on a wafer level.Type: GrantFiled: October 18, 2000Date of Patent: July 29, 2003Assignee: Digital Optics CorporationInventors: Michael R. Feldman, Robert D. Te Kolste, Alan D. Kathman, Eric G. Johnson
-
Patent number: 6588945Abstract: An interface system includes separate optical and mechanical interfaces between opto-electronic devices and fibers. This allows each of these components to be optimized for there particular function. This also allows two surfaces to be provided for the optical interface, allowing the opto-electronic elements to be spaced further apart than the fibers. The interface system can be integrated together, used in conjunction with a conventional fiber housing, and can be surface mounted with an electrical interface.Type: GrantFiled: June 17, 2002Date of Patent: July 8, 2003Assignee: Digital Optics CorporationInventors: John Barnett Hammond, Hongtao Han, Michael R. Feldman
-
Patent number: 6406195Abstract: An interface system includes separate optical and mechanical interfaces between opto-electronic devices and fibers. This allows each of these components to be optimized for there particular function. This also allows two surfaces to be provided for the optical interface, allowing the opto-electronic elements to be spaced further apart than the fibers. The interface system can be integrated together, used in conjunction with a conventional fiber housing, and can be surface mounted with an electrical interface.Type: GrantFiled: October 14, 1999Date of Patent: June 18, 2002Assignee: Digital Optics CorporationInventors: Barney Hammond, Hongtao Han, Michael R. Feldman
-
Patent number: 6396635Abstract: A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a preselected spatial energy distribution at the output plane. Thus, the illuminated portion of the output plane has a shape predetermined by the designer of the homogenizer.Type: GrantFiled: July 12, 2001Date of Patent: May 28, 2002Assignee: Digital Optics CorporationInventors: Alan D. Kathman, Michael R. Feldman
-
Patent number: 6392808Abstract: An analog controlled angle diffuser and associated methods provide a wavelength insensitive diffuser with a controlled output. The diffuser has free formed shaped analog fringes, i.e., fringes which have a continuous cross-section from their peak to their termination. Preferably, the depth of the analog fringes will be at least 2&pgr;, even more preferably at least 2O&pgr;. Advantageously, the pattern of the diffuser is computer-generated.Type: GrantFiled: February 1, 1999Date of Patent: May 21, 2002Assignee: Digital Optics CorporationInventors: Robert D. Te Kolste, Alan D. Kathman, Michael R. Feldman
-
Patent number: 6374004Abstract: An optical subassembly includes an opto-electronic device, an optics block and a spacer, separate from the optics block and providing spacing between the opto-electronic device and the optics block. The opto-electronic device, the optics block and the spacer are aligned and bonded together. This subassembly is particularly useful when coupling light between the opto-electronic device and a fiber. The optical subassembly may also include an opto-electronic device, an optics block and a sealing structure surrounding the opto-electronic device. The opto-electronic device, the optics block and the sealing structure are aligned and bonded together.Type: GrantFiled: October 14, 1999Date of Patent: April 16, 2002Assignee: Digital Optics CorporationInventors: Hongtao Han, Michael R. Feldman
-
Patent number: 6314223Abstract: A power monitor for a light emitter emitting from a single face creates a monitor beam by deflecting a portion of the application beam and further manipulating the monitor beam to allow more efficient use of the monitor beam. For example, the monitor beam may be collimated to allow an increase in spacing between the light emitter and a detector for sensing the monitor beam. Alternatively or additionally, the monitor beam may be focused to allow use of a smaller detector and of a smaller percentage of the application beam. The diffractive element deflecting the beam may be either transmissive or reflective. The additionally manipulation of the monitor beam may be provided by the same diffractive element which deflects the beam, which is particularly useful when the diffractive element is reflective, and/or by additional optical elements.Type: GrantFiled: August 31, 1999Date of Patent: November 6, 2001Assignee: Digital Optics CorporationInventors: Robert Te Kolste, Alan D. Kathman, Erik G. Johnson, Michael R. Feldman