Patents and Publications

Patents Granted

  1. Vortex shedding flowmeter, UK 8417367, EU WO8600698 – 1986, US 4,706,502 – 1987
  2. Fiber optic data ring and current detector, UK 8603375 – 1987
  3. Interferometric apparatus, EU WO8704798 – 1987
  4. Optical fibre measuring system, EU EP0260894 – 1988, US 4,974,961 – 1990
  5. Simultaneous generation of laser radiation at two different frequencies, US 4,956,843 1990, EU EP0422834 – 1991
  6. Single-frequency laser of improved amplitude stability, US 5,031,182 & EU EP0421661 – 1991
  7. Self-heterodyne optical fiber communications system, US 5,355,381 & EU WO9414209 – 1994
  8. Coupled cavity laser source for telecommunications, EU WO9945612 – 1999
  9. Laser assembly platform with silicon base, US 6,178,188 – 2001
  10. Design and process for efficient coupling of light from light emitting diode chips, US 6,980,710 – 2005
  11. Solid State Lasers and A Method For Their Production, US 7,126,976 – 2006

Other Research Areas

  1. High performance sol-gel materials as encapsulants for light emitting diodes
  2. Integrated optical circuits
  3. Process for packaging of light emitting devices using a spin-on-glass material

Peer Reviewed Journal Publications

  1. Monomode fiber optic vortex shedding flowmeter
    Electronics Letters, Vol. 20 (16), p. 664, 1984.
  2. Monomode fiber optic interferometric techniques in flow velocity measurement
    Optica Acta, Vol. 32 (2), p. 233, 1985.
  3. Monomode fiber optic strain gauge with simultaneous phase and polarization state detection
    Optics Letters, Vol. 10, p. 576, 1985.
  4. Applications of birefringent optical fibers in velocimetry and light scattering
    Photon Correlation and Other Techniques in Fluid Mechanics, Cambridge, IP Ser. 77, p. 45, 1985.
  5. Combined interferometric-polarimetric fiber optic sensor capable of remote operation
    Optics Communications, Vol. 57 (2), p. 77, 1986.
  6. A dual interferometer implemented in parallel on a single birefringent mono mode optical fiber
    Journal of Physics E: Scientific Instruments, Vol. 19, p. 143, 1986.
  7. High frequency non-mechanical linear optical polarization state rotation generator
    Journal of Physics E: Scientific Instruments, Vol. 19, p. 146, 1986.
  8. Monomode fiber optic sensors: Optical processing schemes
    International Journal of Optical Sensors, Vol. 2, p. 123, 1986.
  9. Simultaneous measurement of two orthogonal velocity components with fiber optic laser Doppler
    Journal of Physics E: Scientific Instruments, Vol. 19, 1986.
  10. Magnetic field measurement with a fiber Sagnac interferometer
    Journal of Physics E: Scientific Instruments, Vol 19, 1986.
  11. Zero insertion loss random access fiber optic data ring based upon the Faraday effect
    Electronics Letters, Vol. 22 (12), p. 665,1986.
  12. Interferometric fiber optic Hydrogen sensor
    Journal of Physics E: Scientific Instruments, Vol. 19, 1986.
  13. Optical fiber flammable gas sensor
    Journal of Physics E: Scientific Instruments, Vol. 19, 1986.
  14. A pseudo-reciprocal fiber optic Faraday rotation sensor
    Optics Communications, Vol. 59 (3), p. 173, 1986.
  15. Simultaneous measurement of strain and temperature
    International Journal of Optical Sensors, 1987.
  16. All fiber optic interferometric remote point temperature sensor
    Optics Letters, Vol. 12, p. 772, 1987.
  17. A multiplexed remote fiber optic Fabry-Perot sensing system
    Optics Communications, 1987.
  18. Multiple beam fiber optic holography with fringe stabilization
    Applied Optics, 1987.
  19. +21 dBm Erbium power amplifier pumped by Nd:YAG laser
    IEEE Photonics Technology Letters, 1992.
  20. Laser diode array pumped dual-cube Nd:YAG with simultaneous dual single frequency emissions
    Optics Communications, 1992.
  21. Long span coherent transmission with Erbium Ytterbium doped fiber power amplifiers
    Electronics Letters, Vol. 28 (5), 1992.
  22. Solid state pumping of 1.5 um optical amplifiers and sources for lightwave video transmission
    Journal of Lightwave Technology, 1993.
  23. A 1.55-µm solid-state laser source for DWDM applications
    Journal of Lightwave Technology, Vol 17 (10), 1999.

Peer reviewed Conference Publications

  1. Monomode fiber optic vortex shedding flowmeter
    Optical Fiber Sensors, OFS’84, Sttutgart, 1984.
  2. Single mode fiber flowmeters
    Optics’84, Conf. Proc., Keele, 1984.
  3. Dual Fabry-Perot interferometers implemented in parallel on a single optical fiber
    Optical Fiber Sensors, OFS’85, Conf. Proc., San Diego, 1985.
  4. Laser Doppler velocimeters
    Optical Fiber Sensors, OFS’85, Conf. Proc., San Diego, 1985.
  5. Single mode fiber optic sensors: conventional interferometric, polarimetric and combined devices
    Fiber Optics’ 85, London, SPIE Vol. 552, p.196, 1985.
  6. Strain measurement techniques using single mode optical fibers
    Sensors and Their Applications’85, Southampton, Conf. Proc., p. 126, 1985.
  7. Interferometric strain measurement using optical fibers
    Optical and Electro-Optical Applied Sciences and Engineering, SPIE Vol. 586, p. 8O, 1985.
  8. Polarization state control using fiber optic techniques
    Optical and Electro-Optical Applied Sciences and Engineering, SPIE Vol. 586, p. 90, 1985.
  9. Fiber optic modulators for laser velocimetry
    Laser Anemometry, Manchester, BHRA Fluid Engineering, p. 24, 1985.
  10. Fiber optic sensors based on polarization interferometry
    Electro-Optics and Lasers UK’86, Conf. Proc., Brighton, 1986.
  11. Optical fiber polarimetry
    Fiber Optics’86, London, SPIE Vol. 630, p. 187, 1986.
  12. Explotation of Faraday effect in optical fibers
    lEE Meeting on Distributed Sensors, Conf. Proc., London, 1986.
  13. Magnetic field measurement using a fiber ring interferometer
    Optical Fiber Sensors, OFS’86, Conf. Proc., Tokyo, 1986.
  14. Fiber optic interferometric Hydrogen sensor
    Optical Fiber Sensors, OFS’86, Conf. Proc. p. 127, 1986.
  15. Fiber based velocimetry: An optical link and two dimensional probe
    Applications of Laser Anemometry to Fluid Mechanics, Lisbon, 1986.
  16. Fiber optic magnetometry based on Faraday rotation
    Optics’86, Scheveningen, Conf. Proc. p. 79, 1986.
  17. Measurement techniques for magnetic field gradient detection
    SPIE Conference on Fiber Optics, Boston, 1986.
  18. Fiber optic components for sensor applications
    37th Electronics Components Conf., ECC’87, Boston, 1987.
  19. Optical fiber point temperature sensor
    SPIE O-E/Fibers’87, San Diego, 1987.
  20. Single mode fiber optic DC magnetometer
    SPIE O-E/Fibers’87, San Diego, 1987.
  21. Frequency stabilization of semiconductor laser through miniature IOC interferometer
    SPIE O-E/Fibers’87, San Diego, 1987.
  22. Laser frequency stabilization using narrow band wavelength division multiplexers
    SPIE O-E/Fibers’87, San Diego, 1987.
  23. Multiple beam fiber optic holography with fringe stabilization
    SPIE O-E/Fibers’87, San Diego, 1987.
  24. Applications of Faraday rotation using monomode optical fibers
    SPIE Conf. Pub., FiberOptics’87, Brighton, 1987.
  25. Diode laser array pumped cube Nd:YAG laser with stable single frequency emission
    CLEO’90, Anaheim, 1990.
  26. Erbium and Holmium lasers pumped with Nd:YAG
    LEOS’90, Boston, 1990.
  27. Solid state lasers and their applications
    Optical Society of America Lecture, Chicago, 1990.
  28. 1.5 um high power diode pumped Erbium laser
    Optical Fiber Communications, OFC’91, P 22, San Diego, 1991.
  29. High power sensitized Erbium optical amplifier
    Optical Fiber Communications, OFC’91, San Diego, 1991.
  30. +20 dBm Erbium amplifier pumped by a single diode pumped Nd:YAG laser,
    Optical Amplifiers and Their Applications’91 , Snowmass Village, 1991.
  31. Analog transmission characteristics of Erbium amplifier pumped by Nd:YAG laser
    European Conference on Optical Communications, ECOC’91 , p. 5, Paris, 1991.
  32. Single frequency Nd:YLF cube lases pumped by laser-diode-arrays
    CLEO’92, Conf. Proc., Anaheim, 1992.
  33. All optical self-heterodyned remote antenna shemes
    2nd DARPA/RADS Symposium on Photonic Schemes for Antenna Applications, Monterey, 1991.
  34. High output power Er/Yb co-doped optical amplifiers pumped by Nd lasers
    Optical Amplifiers and Their Applications, Santa Fe, 1992.
  35. Video distribution networks employing optical power amplifiers
    European Conference on Optical Communications, ECOC’92, Bertin, 1992.
  36. High-power Erbium optical amplifiers
    Optical Amplifiers and Their Applications, Yokohama, 1993.
  37. Field trial of a 622 Mbit/s CPFSK coherent system with optical amplifier
    European Conference on Optical Communications, ECOC’93, Montreux, 1993.

Select Other Publications

  1. Optical generation of heterodyne carrier using doubly polarized lasers
    Private Communications Naval Research Laboratories, NRL, 1992.
  2. Observation of forward Brillouin scatter in long-haul optical transmissions
    Private Communications, University of North Carolina, 1992.
  3. Optical amplifiers and their applications
    Invited Lecture, Western Communications Symposium, Pheonix, 1993.
  4. High power Erbium amplifiers
    Fiber Optic Product News, 1994.
  5. Microwave signal distribution using an optical amplifier
    Private Communication, Thomson CSF, France, 1994.
  6. Fiber optics and optical communications technology
    Invited talk & conference chair, SPIE Opto Southeast Meeting, 2000.
  7. Optics and semiconductors: convergence of two technologies
    Invited paper, International conference on compound semiconductor manufacturing technology (MANTEK’02), 2002.
  8. Optoelectronic components benefit from wafer-level integration
    Invited paper, Strategies in optoelectronic manufacturing, San Mateo, CA 2003.
  9. Wafer Level LED White Light Extraction
    Invited talk, Strategies in Light, San Diego, CA, 2003.
  10. Understanding lumen depreciation
    Invited talk, Light-it-up LED applications conference, 2004.