Patents Assigned to Oluma, Inc.
  • Adjustable fiber optical filters
    Patent number: 6912343
    Abstract: Adjustable filters formed in fibers or waveguides based on evanescent coupling, where a coupling layer is formed between a waveguide overlay and a side-polished coupling port on the fiber or waveguide. A control mechanism may be provided to adjust a property of at least one of the waveguide overlay and the coupling layer to adjust the output of the filter.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: June 28, 2005
    Assignee: Oluma, Inc.
    Inventors: Zhihao Chen, Zheng Chen, Bo Pi
  • Fabrication of devices with fibers engaged to grooves on substrates
    Patent number: 6869347
    Abstract: Fabrication techniques for polishing fibers engaged in grooves on substrates. A protection template assembly is disclosed to protect the unpolished portions of fibers. Chemical mechanical polishing may be used to achieve high fabrication throughput and high polishing uniformity. Optical monitoring may be used to monitor the polishing in real time.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: March 22, 2005
    Assignee: Oluma, Inc.
    Inventors: Vilas Koinkar, Timothy C. Collins, Joannes M. Costa, Joseph A. Levert
  • Fabrication of devices with fibers engaged to grooves on substrates
    Publication number: 20040171329
    Abstract: Fabrication techniques for polishing fibers engaged in grooves on substrates. A protection template assembly is disclosed to protect the unpolished portions of fibers. Chemical mechanical polishing may be used to achieve high fabrication throughput and high polishing uniformity. Optical monitoring may be used to monitor the polishing in real time.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Applicant: Oluma, Inc.
    Inventors: Vilas Koinkar, Timothy C. Collins, Joannes M. Costa, Joseph A. Levert
  • Fiber tap monitor based on evanescent coupling
    Patent number: 6744948
    Abstract: Fiber tap monitors formed on side-polished fiber coupling ports based on evanescent coupling.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: June 1, 2004
    Assignee: Oluma, Inc.
    Inventors: Bo Pi, Shulai Zhao, Zheng Chen, Robert Morse, Jian Li
  • Fabrication of devices with fibers engaged to grooves on substrates
    Patent number: 6719608
    Abstract: Fabrication techniques for polishing fibers engaged in grooves on substrates. A protection template assembly is disclosed to protect the unpolished portions of fibers. Chemical mechanical polishing may be used to achieve high fabrication throughput and high polishing uniformity. Optical monitoring may be used to monitor the polishing in real time.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: April 13, 2004
    Assignee: Oluma, Inc.
    Inventors: Vilas Koinkar, Timothy C. Collins, Joannes M. Costa, Joseph A. Levert
  • Fiber devices having side evanescent coupling port
    Patent number: 6690857
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: February 10, 2004
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • FIBER DEVICES HAVING SIDE EVANESCENT COUPLING PORT
    Publication number: 20040008935
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved.
    Type: Application
    Filed: December 3, 2002
    Publication date: January 15, 2004
    Applicant: Oluma, Inc., a Delaware corporation
    Inventors: Shulai Zhao, Bo Pi
  • Evanescent optical coupling between a waveguide formed on a substrate and a side-polished fiber
    Patent number: 6625349
    Abstract: Techniques for coupling optical energy between a side-polished port of a fiber in one substrate and a coupling port of a waveguide in another substrate.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: September 23, 2003
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • Thin film structures in devices with a fiber on a substrate
    Patent number: 6621951
    Abstract: Thin-film techniques in forming fiber devices that engage fibers to a substrate with different material properties. Structure buffering, diffusion bonding, and thickness monitoring may be achieved by such thin-film techniques.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: September 16, 2003
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • In-fiber variable optical attenuators and modulators using index-changing liquid media
    Patent number: 6621952
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved. An index-changing liquid is used to control the evanescent optical coupling in response to a control signal.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: September 16, 2003
    Assignee: Oluma, Inc.
    Inventors: Bo Pi, Shulai Zhao
  • Wavelength-division multiplexers and demultiplexers based on mach-zehnder interferometers and evanescent coupling
    Patent number: 6597833
    Abstract: Optical wavelength-division multiplexers and demultiplexers based on Mach-Zehnder interferometers via evanescent coupling through a side-polished fiber port of a fiber.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: July 22, 2003
    Assignee: Oluma, Inc.
    Inventors: Bo Pi, Shulai Zhao
  • Fiber optical switches based on optical evanescent coupling between two fibers
    Patent number: 6571035
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved. A coupling control layer is formed between two fibers to control the evanescent coupling for optical switching operations.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: May 27, 2003
    Assignee: Oluma, Inc.
    Inventors: Bo Pi, Shulai Zhao
  • Integrated fiber devices based on Mach-Zehnder interferometers and evanescent optical coupling
    Patent number: 6556746
    Abstract: Optical Mach-Zehnder interferometers and related devices, systems that have at least one fiber integrated or engaged to a substrate fabricated with one or more grooves. An integrated optical monitoring mechanism may be implemented in such devices.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: April 29, 2003
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • Stabilized and integrated fiber devices
    Patent number: 6549713
    Abstract: Techniques for forming fiber devices that engage fibers to a substrate with similar material properties. A semiconductor template may be used to define positions and orientations of the fibers.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: April 15, 2003
    Assignee: Oluma, Inc.
    Inventors: Bo Pi, Shulai Zhao
  • Coupling control in side-polished fiber devices
    Patent number: 6542663
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved. The fiber cladding under the side-polished fiber surface is designed to support a radial mode profile wider than a radial mode profile supported by adjacent fiber portions.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: April 1, 2003
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • Integration of fibers on substrates fabricated with grooves
    Patent number: 6516114
    Abstract: Techniques and devices for integrating optical fibers on substrates with grooves for various optical applications. Two openings that penetrate through the substrate are formed at both ends of each groove to allow a fiber to pass from one side of substrate to another side. The fiber cladding of a fiber portion positioned in the groove can be removed to produce an optical coupling port.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: February 4, 2003
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • Mach-Zehnder inteferometers and applications based on evanescent coupling through side-polished fiber coupling ports
    Patent number: 6501875
    Abstract: Optical Mach-Zehnder interferometers and related devices, systems that have at least one fiber integrated or engaged to a substrate fabricated with one or more grooves.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: December 31, 2002
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi
  • Devices based on fibers engaged to substrates with grooves
    Patent number: 6490391
    Abstract: Fiber optical devices formed on substrates fabricated with grooves that operate based on evanescent optical coupling through a side-polished fiber surface in each fiber involved.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: December 3, 2002
    Assignee: Oluma, Inc.
    Inventors: Shulai Zhao, Bo Pi