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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 8102597 | Structures and fabrication of whispering-gallery-mode resonators Devices having whispering-gallery-mode (WGM) resonators configured to meet requirements of various applications and facilitate fabrication of such devices. ... | 01/24/2012 |
| 8035892 | Reliable startup of high power thin-disk laser resonators Helper resonators useful for the reliable, controlled startup of an associated high power multidisk unstable imaging thin disk laser (TDL) main resonator each includes one of the thin disk gain elements (TDGEs) of the associated main resonator and a pair of helper r... | 10/11/2011 |
| 7729047 | Method of shifting and fixing optical frequency of an optical resonator, and optical resonator made by same A method of shifting and fixing an optical frequency of an optical resonator to a desired optical frequency, and an optical resonator made by such a method are provided. The method includes providing an optical resonator having a surface and a refractive index, and ... | 06/01/2010 |
| 7626759 | Outcoupler with Bragg grating and system and method using same An outcoupler having a wavelength selective, angle sensitive element or Bragg grating and an arrangement for maintaining the element in a predetermined orientation relative to an incident beam of electromagnetic energy. The Bragg grating may be reflective or transmi... | 12/01/2009 |
| 7535634 | Optical device, system, and method of generating high angular momentum beams An optical device, optical system, and method of generating optical beams having high angular momenta are provided. The optical device includes a whispering gallery mode resonator defining a resonator radius and an elongated waveguide having a length defined between... | 05/19/2009 |
| 7421168 | Integrated optical channelizer A signal channelizer (10) includes an input waveguide (14) carrying an inputted signal (20) having a plurality of wavelengths. The input waveguide (14) has an input port (22) for receiving the inputted signal (20). A plurali... | 09/02/2008 |
| 7403683 | Super-resolution optical components and left-handed materials thereof Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are dispos... | 07/22/2008 |
| 7373088 | Agile spread waveform generator An agile spread spectrum waveform generator comprises a photonic oscillator and an optical heterodyne synthesizer. The photonic oscillator comprises a multi-tone optical comb generator for generating a series of RF comb lines on an optical carrier. The optical heter... | 05/13/2008 |
| 7365369 | Nitride semiconductor device A nitride semiconductor device used chiefly as an LD and an LED element. In order to improve the output and to decrease Vf, the device is given either a three-layer structure in which a nitride semiconductor layer doped with n-type impurities serving as an n-type co... | 04/29/2008 |
| 7352941 | Method and apparatus for electromagnetic resonance and amplification using negative index material An electromagnetic resonance device includes an input reflector, an output reflector, and a negative index material (NIM) disposed between the input reflector and the output reflector. The input reflector and output reflector are configured to be reflective to radia... | 04/01/2008 |
| 7340136 | Multi-wavelength optical fiber The invention features a fiber that includes an optical fiber (110) containing a gain medium having a Raman active material with a Raman gain spectrum. The optical fiber is configured to receive energy at a wavelength λp. The fiber also includes a... | 03/04/2008 |
| 7327773 | Short-pulse laser device with a preferably passive mode coupling and multiple reflection telescope therefor The invention relates to a short-pulse laser device (11) with a preferably passive mode coupling. Said device comprises a resonator (12) which contains a laser crystal (14) in addition to several mirrors (M1-M7, OC) that define a l... | 02/05/2008 |
| 7327772 | Optical resonator with mirror structure suppressing higher order transverse modes An optical resonator including is designed is to degrade the ability of the resonator to support suppress higher order transverse spatial modes. The inventive optical resonator forces Higher higher order transverse modes to be fundamentally unstable in the inventive... | 02/05/2008 |
| 7321425 | Sensor and methods for measuring select components in sheetmaking systems A sensor for measuring at least selected component in a composition can include: (a) a broadband light source, (b) an acousto-optic tunable filter (AOTF), (c) means for generating a beam of light from the light source and directing the beam of light at the AOTF wher... | 01/22/2008 |
| 7315697 | Light source for generating an output signal having spaced apart frequencies A multiple wavelength light source generates an output signal having a comb of accurately spaced apart frequencies with variable free spectral range in the C-band of optical fiber communication. The light source employs an electro-optical modulator (EOM) driven by a... | 01/01/2008 |
| 7283714 | Large mode area fiber for low-loss transmission and amplification of single mode lasers A large mode area optical fiber includes a large diameter core (d1 up to 60 μm), and a first cladding (diameter d2) wherein the difference between refractive index (n1) in the core and the first cladding (n2) is very small (Δn | 10/16/2007 |
| 7280571 | Scalable zig-zag laser amplifier A solid state laser amplifier architecture in which multiple zig-zag slab laser amplifiers (50) are stacked together, side-pumped using a common pump source (52, 54), and cooled with a common cooling system. The stack of zig-zag slabs (50) produ... | 10/09/2007 |
| 7271949 | Multi-wavelength light source and wavelength division multiplexing system using the same A multi-wavelength light source includes an amplifier for generating light over a wide wavelength range; and, an optical fiber grating including a plurality of gratings formed on an optical fiber in in parallel with each other, thereby dividing the light inputted fr... | 09/18/2007 |
| 7272270 | Optical modulator and method of manufacturing same Laser light emitted from a vertically confined surface emitting laser (VCSEL) is incident on a side surface near an end region of an optical waveguide. The end region of the optical waveguide is processed by polishing to taper at an angle of 45 degrees, and an optic... | 09/18/2007 |
| 7256931 | Optical amplifying device In an optical amplifying device, an optical beam passes multiple times through a grazing-incidence bounce amplifier, accessing different parts (G1,G2) of the gain region on each transit. This provides improved characteristics in beam quality, with high... | 08/14/2007 |
| 7242520 | Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter ... | 07/10/2007 |
| 7239775 | High repetition rate, linear, true time optical delay line An optical delay line for use with an optical source including input/output optics optically coupled to the optical source and a curved mirror with a reflective surface that is centered about an evolute curve of the delay line to retro-reflect light traveling along ... | 07/03/2007 |
| 7239442 | Optical frequency comb generator An optical frequency comb generator includes an oscillator (117) for oscillating modulating signals of a preset frequency, and an optical resonator (110) formed by an incident side reflecting mirror (112) and an outgoing side reflecting mirror (... | 07/03/2007 |
| 7236656 | Optical transport network An optical transport network comprises a monolithic transmitter photonic integrated circuit (TxPIC) InP-based chip and a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip. ... | 06/26/2007 |
| 7236679 | Optical microresonator coupling system and associated method An optical microresonator coupling system includes an optical source waveguide through which light travels. A microcylinder is positioned adjacent the optical source guide and has a resonant waveguide formed as spaced resonant elements, such as circumferential ridge... | 06/26/2007 |
| 7209603 | Acousto-optical device based on phonon-induced polaritonic band gaps The device comprises an optical waveguide and an acoustic wave generating device. The waveguide has an optical band gap and a sharp electronic transition (e.g. an excitonic transition) in the band gap, and the acoustic wave generating device generates acoustic waves... | 04/24/2007 |
| 7209500 | Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-l... | 04/24/2007 |
| 7193771 | Power scalable optical systems for generating, transporting, and delivering high power, high quality laser beams Power scalable, rectangular, multi-mode, self-imaging, waveguide technologies are used with various combination of large aperture configurations, 20, 50, 80, 322, 324, 326, 328, 330, 332, 334, 336, 338, Gaussian 360 and super-Gaussian 350 beam p... | 03/20/2007 |
| 7190872 | Semiconductor optical amplifier and optical module using the same The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present invention is to structurally separate the optical signal propagating wave... | 03/13/2007 |
| 7187703 | Intracavity sum-frequency mixing laser Provided is a diode-pumped solid-state laser adapted for an intracavity sum-frequency mixing for generating a laser radiation of a visible wavelength range by performing a sum-frequency mixing of two laser inputs in a laser resonant cavity. A pair of laser resonator... | 03/06/2007 |
| 7184624 | Vertically-coupled whispering gallery mode resonator optical waveguide, and methods A vertically-coupled whispering gallery mode (WGM) resonator optical waveguide, a method of reducing a group velocity of light, and a method of making a waveguide are provided. The vertically-coupled WGM waveguide comprises a cylindrical rod portion having a round c... | 02/27/2007 |
| 7171095 | Optical device and method of manufacturing the same An optical device comprising a substrate, a porous layer laid on the substrate having a pore diameter smaller than the wavelength of light and a crystal layer laid on the porous layer showing a refractive index greater than that of the porous layer is presented. The... | 01/30/2007 |
| 7158699 | Method of optimizing optical channel signal demultiplexing in a monolithic receiver photonic integrated circuit (RxPIC) A method is disclosed for optimizing optical channel signal demultiplexing in a monolithic receiver photonic integrated circuit (RxPIC) chip by providing an integrated channel signal demultiplexing with multiple waveguide input verniers provided to an WDM signal dem... | 01/02/2007 |
| 7136401 | Multiple output Raman fiber laser with stable and small output power for seed applications Disclosed is a Raman laser device (10) having a first cavity in which lasing occurs at a first frequency, and at least one second cavity in which lasing occurs at a second frequency. Thereby respective first and second waves inside the respective cavities are... | 11/14/2006 |
| 7133427 | Phase conjugate laser and method with improved fidelity A spatial filter adapted to increase the angular spread of non-conjugated energy in a beam and suppress this energy to improve the efficiency of a phase conjugate system. In the illustrative embodiment, the filter includes first and second lenses and an aberrator to... | 11/07/2006 |
| 7127145 | Semiconductor optical amplifier, and optical module using the same The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present invention is to structurally separate the optical signal propagating wave... | 10/24/2006 |
| 7123786 | Compact, cost-effective optical-electrical-optical (OEO) converter for an optical transmission network An optical-to-electrical-to-optical converter comprises a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip comprising an optical waveguide formed in the chip from a chip input to receive a first multiplexed channel signal from an optical link a... | 10/17/2006 |
| 7119939 | Phase modulation circuit, test apparatus, and communication system A phase modulation circuit for outputting a modulated signal of an input signal which has been modulated to a desired phase. The circuit includes a light emitting element for emitting light according to an input signal and outputting a modulated signal, a bias curre... | 10/10/2006 |
| 7113524 | Narrow band high power fibre lasers with extended wavelength coverage A fibre laser comprises a fibre light guide (3) having an active medium, a laser as pumping source (1) and a first pair of Bragg gratings (6, 8) forming a first resonator (4). The first pair of Bragg gratings (6, 8) resonates the p... | 09/26/2006 |
| 7113667 | FEC enhanced system for an optical communication network A FEC enhanced system for an optical transport or communication network that includes an optical transmitter that has a transmitter photonic integrated circuit (TxPIC) chip having an integrated circuit comprising an array of modulated sources providing a plurality o... | 09/26/2006 |
