Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7369591 | System for controlling peaking for a driver for a vertical-cavity surface-emitting laser A driver for a vertical-cavity surface emitting laser (VCSEL) is provided that includes a bias current source, a modulation source, and a peaking control circuit. The bias current source is operable to generate a bias current for the VCSEL and an output voltage. The... | 05/06/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7357512 | Color image projection system and method An image projection system projects an image on a projection screen having a phosphor for converting incident violet light into green light which, together with red and blue light, creates the image in full color. The screen includes an apertured mask having apertur... | 04/15/2008 |
| 7355657 | Laser illuminated projection displays A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the m... | 04/08/2008 |
| 7352784 | Laser burst boosting method and apparatus Methods and apparatus for managing thermal loads on a laser gain medium and for boosting the output power of a diode pumped laser are disclosed. The short-term average pumping power to the gain medium is increased, to provide a burst of pumping energy to the laser g... | 04/01/2008 |
| 7348516 | Methods of and laser systems for link processing using laser pulses with specially tailored power profiles A laser pulse with a specially tailored temporal power profile, instead of a conventional temporal shape or substantially square shape, severs an IC link. The specially tailored laser pulse preferably has either an overshoot at the beginning of the laser pulse or a ... | 03/25/2008 |
| 7348946 | Energy sensing light emitting diode display A display that includes energy sensors within the display itself is disclosed. An Organic Light Emitting Diode (OLED) can be made to operate both as a light emitter and as an energy detector. When forward biased with an appropriate driving signal, the OLED emits lig... | 03/25/2008 |
| 7345803 | Optical modulator and optical modulating method In an optical modulation device (10) having an electrical/optical interaction region (11), an electrical signal line (3) is connected to an electrical signal input terminal (2a), another electrical signal line (4a) is... | 03/18/2008 |
| 7340122 | Monolithic transmitter photonic integrated circuit (TxPIC) with integrated optical components in circuit signal channels A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input o... | 03/04/2008 |
| 7340114 | Optical waveguide device and optical modulator An optical waveguide device includes a substrate having an electro-optical effect, an optical waveguide formed on the substrate, an electrode provided for the optical waveguide, a monitoring optical waveguide for guiding part of light outputted from the optical wave... | 03/04/2008 |
| 7339963 | High speed data channel including a CMOS VCSEL driver and a high performance photodetector and CMOS photoreceiver A high speed optical channel including an optical driver and a photodetector in a CMOS photoreceiver. The optical channel driver includes a FET driver circuit driving a passive element (e.g., an integrated loop inductor) and a vertical cavity surface emitting laser ... | 03/04/2008 |
| 7336686 | Laser display apparatus Provided is a laser display apparatus in which speckle can be suppressed. The laser display apparatus includes: a laser comprising a first mirror and a second mirror that are separated by a cavity distance and form a cavity; and a spatial modulator modulating light ... | 02/26/2008 |
| 7333733 | Optoelectronic clock generator producing high frequency optoelectronic pulse trains with variable frequency and variable duty cycle and low jitter An optoelectronic pulse generator is provided that includes a thyristor detector/emitter device having an input port and an output port. The thyristor detector/emitter device is adapted to detect an input optical pulse supplied to the input port and to produce an ou... | 02/19/2008 |
| 7330666 | Method and apparatus for controlling modulator phase alignment in a transmitter of an optical communications system A method of controlling phase alignment in a modulator of a transmitter in an optical communications system uses a narrowband optical filter to monitor changes in power spectral density of a modulated output at and around the optical carrier frequency. In one embodi... | 02/12/2008 |
| 7330032 | Techniques for building-scale electrostatic tomography Techniques for imaging a search region to detect a dielectric target include placing multiple electrodes outside the search region. At least two electrodes are activated independently of each other. Emitter circuits are connected to corresponding emitter electrodes.... | 02/12/2008 |
| 7327913 | Coherent optical detector and coherent communication system and method An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A thir... | 02/05/2008 |
| 7324571 | Methods and systems for laser processing a workpiece and methods and apparatus for controlling beam quality therein Laser processing methods, systems and apparatus having a super-modulating power supply or pumping subsystem and high beam quality (i.e., brightness) are disclosed. The methods, systems and apparatus have significant benefits, improved operation characteristics and m... | 01/29/2008 |
| 7322700 | Image display apparatus An image display apparatus includes an indicating element which modulates or emits light as a pixel in accordance with image information. A displacement unit optically displaces a position of the pixel for each of two or more sub-fields constituting an image field c... | 01/29/2008 |
| 7324719 | Method tuning optical components integrated in a monolithic photonic integrated circuit (PIC) A method of tuning optical components integrated on a monolithic semiconductor chip having a plurality of first optical components integrated on the chip with each fabricated to approximate an emission wavelength along a given wavelength grid and together forming a ... | 01/29/2008 |
| 7324258 | Semiconductor optical modulator integrated resistor for impedance matching using semiconductor doped layer and method of fabricating the same Provided is a semiconductor optical modulator device in which a resistor for impedance matching is integrated in a device in order to improve performance and to reduce cost during the fabrication of an ultra high speed optical modulator module. A doped layer in an e... | 01/29/2008 |
| 7324761 | Single sideband optical transmitter Described are an optical transmitter and a method for generating a single sideband optical signal. The method includes generating a data signal at a first power level and at a second power level with a predetermined ratio being defined between the power levels. The ... | 01/29/2008 |
| 7324570 | Continuous temperature compensation for a laser modulation current Systems and methods for continuously compensating a modulation current of a laser. A temperature compensation circuit has circuitry with a positive temperature coefficient connected with circuitry having a negative temperature coefficient. The temperature compensati... | 01/29/2008 |
| 7317742 | Optical sub-assembly having a thermo-electric cooler and an optical transceiver using the optical sub-assembly The present invention relates to an optical transceiver that installs an optical transmitting assembly and an optical receiving assembly both are compact, inexpensive, and capable of operating at a high speed. The optical transmitting assembly of the present inventi... | 01/08/2008 |
| 7308171 | Method and apparatus for optical isolation in high power fiber-optic systems Methods and apparatus for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a ... | 12/11/2007 |
| 7305189 | Phase modulation for an optical transmission system A data modulation apparatus is proposed that includes a data modulator (20) for modulating data onto an optical signal at a predetermined bit rate. The resulting encoded optical signal is phase modulated by a phase modulator (50) that is driven by at l... | 12/04/2007 |
| 7304928 | Laser power control technique and apparatus for recording and reproducing data in and from optical disk under laser power control A laser power control apparatus for controlling the output power of a semiconductor laser used to record and reproduce data in and from a recording medium is provided. The laser power control apparatus includes a controller configured to vary the peak output power l... | 12/04/2007 |
| 7301981 | Methods for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 11/27/2007 |
| 7295584 | System and method for generating multi-wavelength laser source using highly nonlinear fiber A number of embodiments provide multi-Wavelength Laser Source (MWLS) designs based on Super Continuum (SC) generation using Highly Non-Linear optical Fiber (HNLF). Advantageously, in some embodiments this technology only needs a single wavelength locking mechanism t... | 11/13/2007 |
| 7292793 | Synchronous amplitude modulation for improved performance of optical transmission systems A method and apparatus is provided that yields improved performance of both single channel and WDM long-distance optical transmission systems by synchronously modulating of the transmitted signal's amplitude. An amplitude modulator receives an optical signal onto wh... | 11/06/2007 |
| 7289549 | Lasers for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 10/30/2007 |
| 7286209 | Generation of wideband high power coherent optical radar signals An arrangement for generating a high power optical radar beam. The arrangement includes first and second laser sources each having a first laser for generating an optical beam of a relatively low frequency F1 and a second laser for generating an optical beam ... | 10/23/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7283694 | Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input o... | 10/16/2007 |
| 7283291 | High speed beam steering/field of view adjustment The use of spatial light modulators to steer light beams and/or vary a field of view is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light... | 10/16/2007 |
| 7282706 | Advanced optics for rapidly patterned laser profiles in analytical spectrometry The present invention is directed to a novel arrangement of optical devices for the rapid patterning of laser profiles used for desorption and/or ionization sources in analytical mass spectrometry. Specifically, the new optical arrangement provides for a user-define... | 10/16/2007 |
| 7280568 | Laser coherence control using homogeneous linewidth broadening An apparatus and method for linewidth broadening applied to a laser that emits a light having an output frequency ν and an emission linewidth δE. The apparatus is equipped with an electro-optic modulator for intercepting the light and a noise generator ... | 10/09/2007 |
| 7274718 | Electronic alignment of acousto-optic modulator for modulating a laser A method and apparatus are provided to modulate a beam of laser light. An acousto-optic modulator (AOM) is positioned to receive continuous-wave (CW) laser light at an angle approximating the Bragg angle. Fine tuning of the modulation is then used to compensate for ... | 09/25/2007 |
| 7269194 | High speed laser array driver A method and apparatus for driving lasers. An example laser driving system includes a laser current controller for providing a modulation signal and a bias signal. The modulation signal and bias signal is used by a plurality of high-speed current drivers that accept... | 09/11/2007 |
| 7266136 | Temperature compensation for fiber optic transceivers using optimized convergence algorithms A temperature compensation system comprises a laser driver having a first potentiometer, the laser driver configured to provide a first signal to a laser based on a value of the first potentiometer and an optical communication analyzer configured to provide a second... | 09/04/2007 |
| 7262902 | High gain resonant modulator system and method An optical resonant modulator includes an optical ring resonator and an optical loop that is coupled to the optical ring resonator by two couplers. The optical ring resonator can have a hybrid design in which the ring resonator is formed on an electro-optically pass... | 08/28/2007 |
