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...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8170384 | Hybrid photonic signal processing modules Methods, systems, apparatus and devices for a variable fiber optic delay line that includes an electro-optic modulator for receiving and modulating an input signal, a switchless discrete long time delay module for injecting a long time delay into the modulated signa... | 05/01/2012 |
| 8116602 | High efficiency optical mode transformer for matching a single mode fiber to a high index contrast planar waveguide The present invention includes a device and a method for fabricating a device that is an optical power mode transformer that accepts light in a mode transformation direction where the transformer is attached to or embedded in a semiconductor microchip and includes a... | 02/14/2012 |
| 8103139 | Methods and systems for controlling fiber polarization mode dispersion (PMD) A method is provided for predicting an installed performance parameter of an optical fiber cable. The method includes obtaining a measurement indicative of a value of the performance parameter at a first moment in time. A measurement indicative of a value of the per... | 01/24/2012 |
| 8036503 | Low loss optical delay line using a microfiber coil An optical delay line is formed from a coil of optical fiber (in many cases microfiber), where the radius of the optical fiber is greater than the wavelength λ of the propagating signal and the radius R of the coil is selected, in consideration with the optical fib... | 10/11/2011 |
| 7986860 | Laser generated synthetic mega scale aperture for solar energy concentration and harnessing Systems and methods are described that employ high-intensity lasers to set up a thin plasma sheet, also called a waveguide or “hot shell”, in the atmosphere as a function of beam intensity and geometry. A laser beam can be spread and directed with physical optic... | 07/26/2011 |
| 7925128 | Pumping in a higher-order mode that is different from a signal mode The present disclosure provides an approach to more efficiently amplify signals by matching either the gain materials or the pump profile with the signal profile for a higher-order mode (HOM) signal. By doing so, more efficient energy extraction is achieved. ... | 04/12/2011 |
| 7831119 | Tunable optical group delay based on microresonator structures This invention provides a tunable delay of an optical signal having multiple frequency components. The delay comprises at least a first and a second integrated resonators coupled sequentially to a waveguide; the resonators have angular resonant frequencies ω1 | 11/09/2010 |
| 7796849 | Spatial separation of optical frequency components using photonic crystals Disclosed are various devices and methods employing photonic crystals to facilitate spatial separation of frequency components of a beam. In one embodiment, an apparatus is provided that includes a preconditioning waveguide facilitating a predefined amount of diffra... | 09/14/2010 |
| 7773839 | Optical dispersion compensation A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to ... | 08/10/2010 |
| 7738751 | All-fiber laser coupler with high stability An optical coupler is provided for a passive coherent combination of fiber lasers/amplifiers. A plurality of optical fibers are arranged in a close-packed hexagonal array having 1+3n(n+1) fibers with (3/2)(n2−n)+3 interferometrically dark fibers and (3/... | 06/15/2010 |
| 7734131 | Fabry-Perot tunable filter using a bonded pair of transparent substrates A tunable Fabry-Perot filter (8, 118, 218, 318, 418) includes substrates (10, 12) with parallel generally planar facing principal surfaces (14, 16) including spaced apart facing reflective surface regions (20, 22) that are at least partia... | 06/08/2010 |
| 7729573 | Single mode (SM) fiber optical reader system and method for interrogating resonant waveguide-grating sensor (S) An optical reader system is described herein which has a single mode (SM) optical fiber launch/receive system that uses one or more SM optical fibers to interrogate a biosensor and does not use multimode (MM) optical fibers to interrogate the biosensor. The use of t... | 06/01/2010 |
| 7729572 | Optical tapped time delay modules and arrays An optical time delay module has a plurality of time delay elements connected in a series and a plurality an optical output couplers wherein each of said optical output couplers is operationally connected between one or more time delay elements in said series, the o... | 06/01/2010 |
| 7724994 | Digitally controlled optical tapped time delay modules and arrays An optical time delay module has a plurality of time delay elements connected in a series and a plurality an optical output couplers wherein each of said optical output couplers is operationally connected between one or more time delay elements in said series, the o... | 05/25/2010 |
| 7720331 | Methods and apparatus for use with optical fibres An apparatus for performing mode scrambling in a multimode optical fibre 1 comprises an electromechanical transducer 3 and a signal generator 9. A portion of the fibre 1, which is in the form of a loop 5, is arranged with its ends ... | 05/18/2010 |
| 7711219 | Thermally tunable optical dispersion compensation devices Thermally tunable optical dispersion compensation (ODC) devices are disclosed. In one aspect, an ODC device may include multiple Gires-Tournois (G-T) etalons. The etalons may be optically coupled together. The etalons may compensate for optical dispersion by collect... | 05/04/2010 |
| 7706644 | Offset launch mode from nanotaper waveguide into multimode fiber One or more nanotaper coupling waveguides formed within an optical substrate allows for straightforward, reproducible offset launch conditions to be achieved between an incoming signal and the core region of a multimode fiber (which may be disposed along an alignmen... | 04/27/2010 |
| 7697804 | Method for generating a high-frequency signal and apparatus for generating a high-frequency signal A method for generating a high-frequency signal includes the steps of entering an optical pulse to a wavelength filtering device and generating modulating light having periodic wavelength intervals, and inputting the optical pulse outputted from the wavelength filte... | 04/13/2010 |
| 7693366 | Aligned narrowband optical filters having flat passbands and comprising offset cascaded broadband optical filters A cascaded pair of broad bandwidth optical filters provides an overlap in pass-bands that forms a flat, narrow band optical filter. A first band-pass filter is operable to receive the optical signal and to transmit a first portion of the optical signal. The second b... | 04/06/2010 |
| 7627207 | Dispersion compensating method and dispersion compensating apparatus A dispersion compensating method for carrying out automatic level control with the use of target output power and an ASE correction value corresponding to the number of wavelengths to multiplex and making output power of a wavelength multiplexed signal constant, com... | 12/01/2009 |
| 7593608 | Optical communications system In an optical communications link, an optical system including: at least a first input port for delivering an optical signal travelling in the communications link, the optical signal including a plurality of wavelength channels, the channels being utilized for carry... | 09/22/2009 |
| 7565045 | Tunable light source apparatus, and adjustment method and control program of the same The present invention aims to provide a tuning light source apparatus including a multiple-optical resonator, where the resonance frequencies of the respective optical resonators in a multiple-optical resonator are exactly coincided with the set frequency, and the f... | 07/21/2009 |
| 7558450 | Microwave photonic delay line with separate tuning of optical carrier This invention provides a tunable delay of an optical signal having a carrier with an angular frequency ω0 and a single side band having a signal band with a median angular frequency ωr. The delay line comprises at least a first, a second and... | 07/07/2009 |
| 7555178 | Periodic optical filter A periodic optical filter for interleaving a plurality of optical signals to provide a multiplexed signal for transmission over an optical fiber is disclosed. The periodic optical filter includes a first optical filter constructed to receive at least two optical sig... | 06/30/2009 |
| 7532789 | Process tolerant planar ring resonator dispersion compensator In general, in one aspect, an apparatus includes an optical bus arm and a ring resonator arm. The apparatus also includes first, second and third directional couplers between the optical bus arm and the ring resonator arm. A first tuner is included on one of the opt... | 05/12/2009 |
| 7515785 | Dispersion compensation element, optical crystal, dispersion compensation system, dispersion compensation method In a dispersion compensation element 10X, a plurality of regions (I) and (II) mutually different in radius and interval of holes 24 are set, and voltages applied at electrodes 30A and 30B are controlled in respective regions (I) and (II) ... | 04/07/2009 |
| 7502532 | Multi-ring resonator implementation of optical spectrum reshaper for chirp managed laser technology There is provided a fiber optic transmission system, comprising: an optical signal source adapted to produce a frequency modulated signal; and a multi-ring resonator optical spectrum reshaper (OSR) adapted to conve... | 03/10/2009 |
| 7486852 | Apparatus and method for suppression of stimulated brillouin scattering in an optical fiber A technique for suppressing stimulated Brillouin scattering (SBS) in fibers intended to handle high powers. A fiber is embedded in an elongated embedding material to form an embedded fiber structure. The embedded fiber structure is formed either as a cantilevered be... | 02/03/2009 |
| 7486851 | Tunable single-channel dispersion compensator for high-speed optical systems One embodiment of the present invention includes a plurality of first optical elements and a second optical element optically coupled to one another in cascaded fashion. Each first optical element has a group delay response characterized by a first period such that ... | 02/03/2009 |
| 7469081 | Reducing thermal load on optical head Methods and apparatus for reducing a thermal load on an optical head are described. Waste light is captured at one or more locations in the optical head and directed to a location that is thermally isolated from the one or more locations in the optical head using or... | 12/23/2008 |
| 7460745 | Configurable dispersion compensation trimmer The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of large volumes of data over long distances at high rates. An improved apparatus achieving precise dispersion compensation in a fiber span is disclosed. In pa... | 12/02/2008 |
| 7460746 | Tunable multi-loop opto-electronic oscillator with tunable RF or microwave filter based on optical filtering Multi-loop opto-electronic oscillators using tunable RF or microwave filters that achieve signal filtering in RF or microwave frequencies by optical filtering and signal tuning by optical tuning. ... | 12/02/2008 |
| 7454101 | Tunable optical dispersion compensators A tunable optical dispersion compensator includes an optical input port, an input variable optical coupler, at least two optical dispersion paths, an output variable optical coupler, and an optical output port. The input variable optical coupler is coupled to select... | 11/18/2008 |
| 7447401 | Optical communications system In an optical communications link, an optical system including: at least a first input port for delivering an optical signal travelling in the communications link, the optical signal including a plurality of wavelength channels, the channels being utilized for carry... | 11/04/2008 |
| 7444045 | Hybrid sphere-waveguide resonators Microresonators, such as a microsphere resonators and planar microresonators, are optically coupled to waveguides for input and output of light. It is important that the relative positions of the microresonator and the waveguide are maintained stable, while still ma... | 10/28/2008 |
| 7440651 | Single mode whispering-gallery-mode resonator Whispering-gallery-mode (WGM) resonators configured to support only a single whispering gallery mode. ... | 10/21/2008 |
| 7437083 | Wavelength converter A wavelength converter for binary optical signals includes an interferometer structure (110) for generating an output signal by modulating a received local signal (LS) according to the modulation of a fUrther received first input signal (IS 1). When su... | 10/14/2008 |
| 7437048 | Equipment bay cable management system A cable management system is provided that is configured to be located between adjacent equipment racks, while being vertically oriented to extend upward along a narrow space between the adjacent equipment racks. The cable management system comprises a main panel ex... | 10/14/2008 |
| 7433555 | Optoelectronic device chip having a composite spacer structure and method making same An optoelectronic device chip, and a method for making the chip, are disclosed. The chip comprises a device substrate, an optically transparent upper substrate, and a composite spacer layer which includes an adhesive material and a plurality of particles dispersed i... | 10/07/2008 |
| 7430347 | Methods, systems, and apparatuses for optically generating time delays in signals Methods, systems, and apparatuses for producing time delays in optical signals are provided. The methods, systems, and apparatuses allow the time it takes for an individual light beam to travel an individual light path to be varied. In one example, the apparatuses h... | 09/30/2008 |
