Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8107780 | Display projectors The present invention is directed to a display which presents an image along a line of sight of an observer, such that the image is overlaid on a real world scene has a first waveguide and an image source device to inject the image into the first waveguide. The firs... | 01/31/2012 |
| 8078023 | System and method for permanently writing a diffraction grating in a low phonon energy glass medium A system and method for permanently writing diffraction gratings in low phonon energy glass waveguides are shown. Ultrashort light pulses are generated and made to form two beams synchronously superimposed in the waveguide, therefore forming an interference pattern ... | 12/13/2011 |
| 8068709 | Transmission gratings designed by computed interference between simulated optical signals and fabricated by reduction lithography A method comprises computing an interference pattern between a simulated design input optical signal and a simulated design output optical signal, and computationally deriving an arrangement of at least one diffractive element set from the computed interference patt... | 11/29/2011 |
| 8064745 | Planar waveguide and optical fiber coupling An apparatus for optically coupling light between optical transmission components is provided. The apparatus includes first and second optical transmission components wherein the first optical transmission component includes a planar optical waveguide, a grating cou... | 11/22/2011 |
| 8050525 | Method and system for grating taps for monitoring a DWDM transmitter array integrated on a PLC platform An integrated DWDM transmitter apparatus includes a silica-on-silicon substrate which includes a silica layer and a silicon layer. A plurality of input waveguides and a plurality of gratings are provided within the silica layer. Each of the plurality of gratings is ... | 11/01/2011 |
| 8041163 | Method and apparatus for detecting multiple optical wavelengths Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings tha... | 10/18/2011 |
| 8036505 | Athermal AWG module An athermal AWG module 10 comprises: an AWG 11 having waveguides partially divided to separate a chip, separated chips being connected by a compensation plate 33 to achieve temperature-independence; an athermal AWG chip 12 having a substr... | 10/11/2011 |
| 8009946 | Fiberoptic patient health multi-parameter monitoring devices and system A patient monitoring system includes a plurality of diffraction gratings integrated along the length of an optical fiber, wherein the optical fiber and each grating are together configured to alter either the effective refractive index or grating periodicity of the ... | 08/30/2011 |
| 8009947 | Optical semiconductor device and method of controlling the same An optical semiconductor device includes a waveguide having one or more first segments having a region that includes a diffractive grating and another region combined to the region, one or more second segments having a region that includes a diffractive grating and ... | 08/30/2011 |
| 8000571 | Light emitting device and planar waveguide with single-sided periodically stacked interface Light emitting and waveguide devices with single-sided photonic bandgaps are provided. The light emitting device is formed from a heavily doped silicon (Si) bottom electrode, and a Si-containing dielectric layer embedded Si nanoparticles overlying the bottom electro... | 08/16/2011 |
| 7970245 | Optical biosensor using SPR phenomenon An optical biosensor using a surface plasmon resonance phenomenon includes an input optical waveguide including a first optical mode converting unit for converting a core mode to a cladding mode; and an optical sensing unit for allowing a specific wavelength among w... | 06/28/2011 |
| 7965912 | Temperature insensitive arrayed waveguide grating multiplexer for optical property compensation and the manufacturing method thereof Two methods are presented in order to properly compensate the changes of the optical characteristics, which are caused by the optical path length change. First, a path length compensation method in which the additional optical path length, equivalent to the dicing k... | 06/21/2011 |
| RE42407 | Distributed optical structures with improved diffraction efficiency and/or improved optical coupling An optical apparatus comprises a planar optical waveguide having at least one set of diffractive elements and confining in at least one transverse spatial dimension optical signals propagating therein. Each diffractive element set routes, between corresponding input... | 05/31/2011 |
| 7949215 | Apparatus for side fire fiber lasers A fiber laser having at least one pair of reflectors coupled to an optical fiber, the at least one pair of reflectors defining an optical cavity between the at least one pair of reflectors and being configured to reflect light within the optical cavity. At least one... | 05/24/2011 |
| 7949216 | Bragg grating elements for optical devices Three-dimensional holographic elements are disclosed. Three-dimensional Bragg gratings recorded on bulks of optical material are included in the disclosure. Such elements may be manufactured by placing a three-dimensional bulk of optical material directly behind a r... | 05/24/2011 |
| 7929815 | Optical coupling device An optical coupling device for coupling a light beam into a waveguide and a method of manufacturing the device. The device includes a grating portion having a plurality of essentially straight and essentially parallel scattering elements, wherein two or more of the ... | 04/19/2011 |
| 7925130 | Optical waveguide, optical module, method of producing optical module, and method of producing optical waveguide An optical waveguide comprising: a waveguide core through which light propagates; a cladding that surrounds the waveguide core and has a refractive index that is less than the refractive index of the waveguide core; a metal layer that is formed on a surface of at le... | 04/12/2011 |
| 7912330 | Packaging method of temperature insensitive arrayed waveguide grating The temperature dependency of center wavelength of AWG is compensated by adjusting optical input position by cutting interface between input slab waveguide of AWG and stripe waveguide circuit connected to input slab, followed by attaching lateral sliding rod which h... | 03/22/2011 |
| RE42206 | Multiple wavelength optical source A planar optical waveguide is formed having sets of locking diffractive elements and means for routing optical signals. Lasers are positioned to launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element se... | 03/08/2011 |
| 7899283 | Optical device and method for manufacturing the same An optical device including: an optical waveguide; and a plurality of diffraction grating layers provided along the optical waveguide, wherein each of the diffraction grating layers comprises a diffraction grating, each diffraction grating comprising a discontinuous... | 03/01/2011 |
| 7894693 | Optical semiconductor device and method of controlling the same An optical semiconductor device includes a waveguide having one or more first segments having a region that includes a diffractive grating and another region combined to the region, one or more second segments having a region that includes a diffractive grating and ... | 02/22/2011 |
| 7881570 | Photonic devices having degenerate spectral band edges and methods of using the same Provided herein are photonic devices configured to display photonic band gap structure with a degenerate band edge. Electromagnetic radiation incident upon these photonic devices can be converted into a frozen mode characterized by a significantly increased amplitud... | 02/01/2011 |
| 7881571 | Coupling device with compensated birefringence The invention relates to a coupling device comprising a support substrate; a first layer arranged on the support substrate and comprising first patterns produced within the thickness of said first layer, said first patterns being arranged in parallel and periodic ro... | 02/01/2011 |
| 7876986 | Shared slab AWG circuits and systems Planar AWG circuits and systems are disclosed that use air trench bends and shared MMI slabs to increase planar circuit compactness. ... | 01/25/2011 |
| 7856160 | Illumination device, image display device, and projector An image display device includes: a first face; a laser light source device emitting laser light; and a diffractive optical element on which the laser light emitted from the laser light source device is incident, generating diffracted light from the incident laser l... | 12/21/2010 |
| 7853102 | Polymer wavelength filters with high-resolution periodical structures and its fabrication using replication process The present invention discloses a method for fabricating polymer wavelength filter with high-resolution periodical structure, which comprises: a positive photo-resister film is coated or a substrate, holographically exposed with grating pattern, and coated with a ne... | 12/14/2010 |
| 7844147 | Dynamic waveform shaping in a continuous fiber A system for dynamic waveform shaping in an optical fiber comprising: the optical fiber receiving an optical waveform, the optical waveform having individual spectral lines; a plurality of fiber bragg gratings in-line on the optical fiber, each having a reflectivity... | 11/30/2010 |
| RE41954 | Optical time delay apparatus incorporating diffractive element sets An optical time delay apparatus comprises: a multi-wavelength optical source; a diffractive element set imparting a wavelength-dependent delay on signals routed from the source to a 1×N optical switch; and N diffractive element sets routing signals from the 1×N sw... | 11/23/2010 |
| 7840105 | Rugged fiber optic towed array A fiber optic towed array is provided. The array includes a flexible core upon which is disposed a semi-rigid mandrel. The semi-rigid mandrel has a helical groove formed therein, in which is disposed an optical fiber, the optical fiber including a plurality of fiber... | 11/23/2010 |
| 7840106 | Etched surface gratings fabricated using computed interference between simulated optical signals and reduction lithography An optical apparatus comprises a set of diffractive elements on a substrate. They are arranged: (i) to receive an input signal propagating from an input port as a diffraction-guided optical beam, (ii) to diffract a portion of the received input signal as an output s... | 11/23/2010 |
| 7840104 | Ultra-wide band AWG multiplexer A multiplexing AWG device capable of producing an ultra-wideband, low ripple, flat-top signal is presented. The AWG device includes an AWG unit and a two-section waveguide coupled to the AWG unit. The two-section waveguide has a first section and a second section. T... | 11/23/2010 |
| 7835604 | Fiber Bragg grating element The present invention provides a fiber Bragg grating element which is simply configured and capable of obtaining a high cut-off amount exceeding 40 dB in a wide range. A fiber Bragg grating element of the present invention has a plurality of gratings formed in an op... | 11/16/2010 |
| 7835605 | High temperature sustainable fiber bragg gratings An optical fiber 200 with a high thermal resistance fiber Bragg grating (FBG) 130. Compared to existing FBG's, the invention provides greatly enhanced thermal stability, being stable up to 1200° C. The grating reflectivity and resonant wavelength are ... | 11/16/2010 |
| 7817888 | Bragg grating elements for optical devices Disclosed herein is a method for manufacturing three-dimensional Bragg grating elements. The method for manufacturing three-dimensional Bragg gratings may include forming a first Bragg grating element using a pair of recording beams. The method may also include usin... | 10/19/2010 |
| 7801402 | Receiver photonic integrated circuit (RxPIC) chip utilizing compact wavelength selective decombiners A monolithic receiver photonic integrated circuit (RxPIC) chip includes a plurality of optical signal channels together with other active elements integrated on a semiconductor chip, which chips further include a wavelength selective decombiner comprising a supergra... | 09/21/2010 |
| 7801403 | Optical fiber grating tuning device and optical systems employing same A tuning device for an optical fiber grating includes a multi-part confinement member. The confinement member includes a feature such as a channel in which the fiber grating is disposed. Movement of the different parts of the confinement member relative to one anoth... | 09/21/2010 |
| 7801401 | Optical element, optical module, optical connector, and optical module manufacturing method It is to provide an optical element, an optical module, an optical connector, and an optical module manufacturing method that can quickly and very accurately control the amount of outgoing light to a desired amount when incident light is outputted, reduce costs, and... | 09/21/2010 |
| 7792402 | Apparatus and method for coupling light to a thin film optical waveguide An apparatus comprises an optical waveguide, a grating for coupling light into the waveguide, and an optical element for splitting a light beam into a plurality of beams that strike the grating at different angles of incidence. ... | 09/07/2010 |
| 7787726 | Temperature sensing fabric A blanket or article of wearing apparel for a subject such as an infant. A fiber optic temperature sensing element is integrated into the fabric by a process such as weaving. The temperature sensing element is a optic fiber having inscribed therein one or more fiber... | 08/31/2010 |
| RE41570 | Distributed optical structures in a planar waveguide coupling in-plane and out-of-plane optical signals A slab optical waveguide confines in one transverse dimension optical signals propagating in two dimensions therein, and has a set of diffractive elements collectively arranged so as to exhibit positional variation in amplitude, optical separation, or spatial phase.... | 08/24/2010 |
