| Patent Number |
Title Of Patent |
Date Issued |
| 7450624 |
Grating--outcoupled surface-emitting lasers |
November 11, 2008 |
| Laser diodes are formed with an outcoupling grating between two separate distributed Bragg reflectors. The devices have gain regions located between the reflector gratings for pumping the active region. The outcoupling grating couples light out of the waveguide normal to the surface |
| 7113526 |
Multi-wavelength grating-outcoupled surface emitting laser system |
September 26, 2006 |
| A surface emitting semiconductor laser system having four cavities that couple light from a single aperture. Each of the four cavities overlaps at the outcoupling aperture. Each cavity is fabricated to resonate at a different central wavelength, outputting a different frequency of light, |
| 7092598 |
Chip-scale WDM system using grating-outcoupled surface-emitting lasers |
August 15, 2006 |
| A surface emitting semiconductor laser system having an outcoupling aperture on a central waveguide. At either end of the central waveguide are means for reflecting a plurality of different wavelengths of light such that multiple wavelengths are outcoupled through a single outcouplin |
| 6967054 |
Coating thickness control using surface features |
November 22, 2005 |
| A uniform coating is provided using surface features. Multiple ridges or other shapes are fabricated near an area of interest to allow for uniform coating in between the ridges. Areas at either ends of the ridges are left open to allow for excess pooling of photoresist liquid and to aid |
| 6963597 |
Grating-outcoupled surface-emitting lasers |
November 8, 2005 |
| Laser diodes are formed with an outcoupling grating between two separate distributed Bragg reflectors. The devices have gain regions located between the reflector gratings for pumping the active region. The outcoupling grating couples light out of the waveguide normal to the surface |
| 6888874 |
Single-wavelength, unequal-length-multi-cavity grating-outcoupled surface emitting laser with st |
May 3, 2005 |
| A laser diode system is provided. The laser comprises first and second reflective gratings at each end of the laser. The laser further comprises an outcoupling grating between the first and second reflective gratings, wherein the outcoupling grating couples light out of the laser. The |
| 6853666 |
Integrated grating-outcoupled surface-emitting lasers |
February 8, 2005 |
| An electronic/photonic integrated circuit in which grating-outcoupled surface-emitting lasers are used both to provide external emission out of the plane of the chip (through gratings), and also to feed optical power into photonic waveguides parallel to the plane of the chip. Transistors |
| 6810067 |
Single mode grating-outcoupled surface emitting laser with broadband and narrow-band DBR reflect |
October 26, 2004 |
| A laser source is provided by the present invention, comprising a laser diode and has an active region with asymmetric distributed Bragg reflectors (DBRs) at either end to reflect light within the cavity, and an outcoupling grating in the center of the device, which couples light out |
| 6775427 |
Laterally coupled wave guides |
August 10, 2004 |
| A system capable of creating multiple beams of light using laterally coupled waveguides. Each beam is of a different central wavelength, capable of being generated on chip and coupled into a single fiber, and emitted from a single outcoupling grating (OCG). The present innovations ca |
| 6760359 |
Grating-outcoupled surface-emitting lasers with flared gain regions |
July 6, 2004 |
| A laser system comprises a laser diode with an active region and reflectors at both ends. An outcoupling aperture is located between the reflectors to couple light out of the device through the surface. The gain region increases in width as it nears the outcoupling aperture. |
| 6716081 |
Spacer fabrication for flat panel displays |
April 6, 2004 |
| A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as an anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the |
| 6714575 |
Optical modulator system |
March 30, 2004 |
| A modulation technique for optical signals. A laser diode having an outcoupling grating in the waveguide between two reflectors is provided. A second waveguide is positioned next to the first waveguide. The first end of the second waveguide is optically connected to the first waveguide o |
| 6697412 |
Long wavelength laser diodes on metamorphic buffer modified gallium arsenide wafers |
February 24, 2004 |
| A light-emitting device includes a GaAs substrate, a light-emitting structure disposed above the substrate and capable of emitting light having a wavelength of about 1.3 microns to about 1.55 microns, and a buffer layer disposed between the substrate and the light-emitting structure. |
| 6661825 |
Integrated grating-outcoupled surface-emitting lasers |
December 9, 2003 |
| An electronic/photonic integrated circuit in which grating-outcoupled surface-emitting lasers are used both to provide external emission out of the plane of the chip (through gratings), and also to feed optical power into photonic waveguides parallel to the plane of the chip. Transistors |
| 6647048 |
Grating-outcoupled surface-emitting lasers using quantum wells with thickness and composition va |
November 11, 2003 |
| A laser diode system that has two distributed Bragg reflector reflectors at either end and an outcoupling aperture between the reflectors. The quantum wells in the active region are thicker in the gain region than in other parts of the device, increasing efficiency and lowering threshold |
| 6636547 |
Multiple grating-outcoupled surface-emitting lasers |
October 21, 2003 |
| Two or more laser diodes are combined by crossing their cavities, and the multiple lasers share a common outcoupling aperture. By controlling the quantum wells in the active region, crosstalk between the devices can be eliminated. The multiple devices can also be made to crosstalk, and c |
| 6600765 |
High-power coherent arrays of vertical cavity surface-emitting semiconducting lasers |
July 29, 2003 |
| An array of VCSELs is made to operate coherently by coupling light to and from all elements with a common waveguide. The common waveguide can be fabricated on the wafer or separately, and allows enough optical power to mix between the individual lasers for phase-locking to occur. |
| 6487328 |
Single wavelength semiconductor laser with grating-assisted dielectric waveguide coupler |
November 26, 2002 |
| A grating (18) couples the waveguide region (36) of a semiconductor laser (11) to a dielectric waveguide (26). The waveguide region of the laser includes a mirror (15) at one end thereof and an absorber (19) at the other end thereof. The dielectric waveguide includes a reflector (24) |
| 6413135 |
Spacer fabrication for flat panel displays |
July 2, 2002 |
| A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as a anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the |
| 6236773 |
Single wavelength semiconductor laser with grating-assisted dielectric waveguide coupler |
May 22, 2001 |
| A grating (18) couples the waveguide region (36) of a semiconductor laser (11) to a dielectric waveguide (26). The waveguide region of the laser includes a mirror (15) at one end thereof and an absorber (19) at the other end thereof. The dielectric waveguide includes a reflector (24) |
| 6064783 |
Integrated laser and coupled waveguide |
May 16, 2000 |
| A grating (461) coupling the output of a semiconductor laser (410) in a semiconductor waveguide to a dielectric waveguide (451) having a core (458) which may be efficiently butt-coupled to the core of an optical fiber (470); the laser and semiconductor waveguide, coupling grating, and |
| 5673284 |
Integrated laser and coupled waveguide |
September 30, 1997 |
| A grating (461) coupling the output of a semiconductor laser (410) in a semiconductor waveguide to a dielectric waveguide (451) having a core (458) which may be efficiently butt-coupled to the core of an optical fiber (470); the laser and semiconductor waveguide, coupling grating, and |
| 5019787 |
Optical amplifier |
May 28, 1991 |
| An optical amplifier comprising a substrate of a semiconductor material having a pair of opposed surfaces and a body of semiconductor material on one of the surfaces. The body includes a pair of clad layers of opposite conductivity types having an intermediate quantum wall region the |
| 4976539 |
Diode laser array |
December 11, 1990 |
| A diode laser array comprises a substrate of a semiconductor material having first and second opposed surfaces. On the first surface is a plurality of spaced gain sections and a separate distributed Bragg reflector passive waveguide at each end of each gain section and optically conn |
| 4952019 |
Grating-coupled surface-emitting superluminescent device |
August 28, 1990 |
| A superluminescent diode has one end coupled to a DBR having a grating and the other end has a reflective coating. A broadlight spectrum is emitted for reduced speckle interference and phase noise when used in applications such as a gyroscope. The diode can be of the "P side down" type f |
| 4919507 |
Semiconductor radiation coupling system |
April 24, 1990 |
| A first array of laser diode devices are optically coupled by a diffraction grating comprising a plurality of spaced diffraction nodules in a grid array optically coupled to the devices. The light emitted from a device of the first array can pass through the grid array to a second device |
| 4488307 |
Three-mirror active-passive semiconductor laser |
December 11, 1984 |
| Disclosed is a GaA1As laser diode wherein an abrupt etch step in the waveguide layer forms a third mirror. The structure is a large optical cavity double heterostructure laser having a relatively long active cavity and a relatively short passive cavity. Output is temperature and current |
| 4379495 |
Weighing scale with low susceptibility to vibration |
April 12, 1983 |
| A method and apparatus for determining a representative average weight reading is disclosed, based on a series of weight readings from a scale subject to vibrations. Signals are generated at regular intervals, representative of the weight readings from said scale. Each new weight sig |
| 3958188 |
Fiber distributed feedback laser |
May 18, 1976 |
| Utilizing round optical fibers as communication channels in optical communication networks presents the problem of obtaining a high efficiency coupling between the optical fiber and the laser. A laser is made an integral part of the optical fiber channel by either diffusing active ma |
