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| Number | Title | Issue Date |
| 7203217 | Narrow band electric discharge gas laser having improved beam direction stability An electric discharge, narrow band gas laser with improvements in wavelength stability. Improvements result from reduced laser beam directional fluctuations or fast correction of those fluctuations. Applicant has discovered, using an extremely sensitive knife edge o... | 04/10/2007 |
| 7202993 | Production of tuneable picosecond light pulses in a visible spectral range The invention relates to a device for the production of tuneable light impulses in a visible spectral range, comprising a laser system (LS) which emits femtosecond light impulses in the infrared spectral range, and an optical frequency converter (FC) for converting ... | 04/10/2007 |
| 7203216 | Timing control for two-chamber gas discharge laser system Feedback timing control equipment and process for an injection seeded modular gas discharge laser. A preferred embodiment is a system capable of producing high quality pulsed laser beams at pulse rates of about 4,000 Hz or greater and at pulse energies of about 5 to... | 04/10/2007 |
| 7203401 | 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... | 04/10/2007 |
| 7203212 | System and method for wavelength error measurement A system for detecting wavelength error that includes one or more ordered pairs of photodetectors each of which receives an individual optical signal and is used to detect a wavelength error in that optical signal. Each individual optical signal is directed towards ... | 04/10/2007 |
| 7203398 | Compact DMD-based optical module An optical module having an integral optical waveguide with waveguide ports at each end. The optical waveguide receives an input light beam through a first waveguide port. The input light beam passes through the waveguide and is emitted from the second waveguide por... | 04/10/2007 |
| 7199869 | Combined Bragg grating wavelength interrogator and Brillouin backscattering measuring instrument A method and apparatus sense attributes of reflected signals in an optical sensing system. In one embodiment, a method for sensing in an optical sensing system comprising an interrogator coupled to a Bragg grating sensor by an optical cable includes the steps of pro... | 04/03/2007 |
| 7200343 | Drive control apparatus and drive control method for optical modulator The present invention aims at providing a drive control apparatus and a drive control method with a simple configuration, which can also reliably compensate for operating point fluctuations of an optical modulator driven in accordance with a drive signal correspondi... | 04/03/2007 |
| 7199344 | Active camouflage using real-time spectral matching An invention is provided for concealing an object. The invention includes a plurality of electromagnetic radiation sources that generate an electromagnetic radiation spectrum, and a controller in communication with the plurality of electromagnetic radiation sources.... | 04/03/2007 |
| 7200159 | Method and apparatus for temperature stabilization of a wavelength of a laser A method and apparatus for temperature stabilization of a wavelength of a laser compensate for thermal instability of a internal etalon of the wavelength using the results of measuring the wavelength with an external wavelength meter. ... | 04/03/2007 |
| 7200337 | Optoelectronic transceiver having dual access to onboard diagnostics An optoelectronic transceiver includes first and second controller ICs. Each controller IC includes logic, a memory, an interface, and at least one input port. Each memory is configured to store digital diagnostic data and has a unique serial device address to allow... | 04/03/2007 |
| 7200296 | Monolithic photonic integrated circuit (PIC) CHIP An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating wavelengths approximating a standardized wavelength grid and providin... | 04/03/2007 |
| 7196744 | Optical transceiver package with a liquid crystal variable optical attenuator A liquid crystal optical attenuator is provided that is used to control the intensity of a light signal. The optical attenuator includes at least one polarizing element having an optical polarization axis, wherein the polarizing element transmits a portion of a ligh... | 03/27/2007 |
| 7197208 | Wavelength tunable light sources and methods of operating the same Wavelength tunable light sources and methods of operating the same are described. In one aspect, a wavelength tunable light source includes a resonant light path, an optical gain medium, an optical grating, a first acousto-optic deflector, and a second acousto-optic... | 03/27/2007 |
| 7196342 | Systems and methods for reducing the influence of plasma-generated debris on the internal components of an EUV light source Systems and methods are disclosed for reducing the influence of plasma generated debris on internal components of an EUV light source. In one aspect, an EUV meteorology monitor is provided which may have a heater to heat an internal multi-layer filtering mirror to a... | 03/27/2007 |
| 7192800 | Method to change the profiles of released membranes A method to change the profile of released membranes is disclosed. This method is to form an island structure at certain regions of membranes. Membranes comprise one or several layers of different materials, and at least one layer has intrinsic or residual stress. T... | 03/20/2007 |
| 7193228 | EUV light source optical elements Apparatus and methods are disclosed for forming plasma generated EUV light source optical elements, e.g., reflectors comprising MLM stacks employing various binary layer materials and capping layer(s) including single and binary capping layers for utilization in pla... | 03/20/2007 |
| 7190705 | Pulsed laser sources Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain embodiments exclude such an isolator. A reflective optical element on one end... | 03/13/2007 |
| 7190707 | Gas discharge laser light source beam delivery unit A beam delivery unit and method of delivering a laser beam from a laser light source for excimer or molecular fluorine gas discharge laser systems in the DUV and smaller wavelengths is disclosed, which may comprise: a beam delivery enclosure defining an output laser... | 03/13/2007 |
| 7190852 | Semiconductor devices with curved waveguides and mode transformers Semiconductor devices having various combinations of curved waveguides and mode transformers are described. According to some exemplary embodiments, the mode transformer itself can be fabricated as all or part of the curved waveguide. For these exemplary embodiments... | 03/13/2007 |
| 7190861 | Monolithic semiconductor light source with spectral controllability The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power ... | 03/13/2007 |
| 7187817 | Awg coupler for separating electromagnetic radiation of various wavelength regions, and a telecommunications system A single free-beam region for coupling electromagnetic radiation in and out is provided in order in the case of an AWG coupler for spectrally separating electromagnetic radiation to achieve a more stable thermal characteristic and a space-saving layout. ... | 03/06/2007 |
| 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 |
| 7187814 | Optical add/drop device A drop-type AOTF is used as a configuration for removing from a through signal an optical signal having the same wavelength as that of an optical signal to be added. To the drop-type AOTF, RF signals are input to always select all of wavelengths, and an RF signal is... | 03/06/2007 |
| 7184451 | Continuously tunable coupled opto-electronic oscillators having balanced opto-electronic filters Devices and techniques for achieving continuous tuning of coupled opto-electronic oscillators with signal filtering in RF or microwave frequencies by optical filtering via two optical resonators in two separate optical paths. ... | 02/27/2007 |
| 7184627 | Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements An optical wavelength grating coupler incorporating one or more distributed Bragg reflectors (DBR) or other reflective elements to enhance the coupling efficiency thereof. The grating coupler has a grating comprising a plurality of scattering elements adapted to sca... | 02/27/2007 |
| 7184668 | System and method for protecting eye safety during operation of a fiber optic transceiver A single-chip integrated circuit, sometimes called a controller, controls operation of a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conver... | 02/27/2007 |
| 7181097 | Methods of achieving optimal communications performance A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse r... | 02/20/2007 |
| 7181104 | Optical monitor and a method for improved optical monitoring The inventor proposes herein a novel optical monitor requiring only a single fiber-coupled photodetector. In one embodiment of the present invention, the optical monitor further includes an optical coupler for tapping a portion of an optical signal, a tunable filter... | 02/20/2007 |
| 7181105 | Method for adjusting alignment of laser beams in combined-laser-light source where the laser beams are incident on restricted area of light-emission end face of optical fiber A combined-laser-light source includes: a plurality of semiconductor lasers; an optical fiber; and an optical system which converges a bundle of laser beams emitted from the plurality of semiconductor lasers, and makes the converged bundle of the laser beams enter t... | 02/20/2007 |
| 7180083 | EUV light source collector erosion mitigation An EUV light source collector erosion mitigation system and method is disclosed which may comprise a collector comprising a multilayered mirror collector comprising a collector outer surface composed of a capping material subject to removal due to a removing interac... | 02/20/2007 |
| 7180657 | Devices using high precision in-fiber atomic frequency reference Techniques and devices based on holey fibers with internal holes that confine a gas medium for various applications. ... | 02/20/2007 |
| 7177550 | On-axis laser receiver wavelength demultiplexer with integral immersion lensed detectors The present invention is directed to a laser communication receiver for wireless optical communication. A laser communication receiver includes a diffractive optical element to permit detectors at different spatial locations to detect different wavelengths of the op... | 02/13/2007 |
| 7177337 | Semiconductor optical integrated circuit A semiconductor optical integrated circuit includes: a semiconductor substrate; a light reflecting portion and a gain region, on the semiconductor substrate; a first optical waveguide connecting the reflecting portion and the gain region; and a second optical wavegu... | 02/13/2007 |
| 7177340 | Extended cavity laser device with bulk transmission grating A laser apparatus is disclosed utilizing a laser diode having a reflective back facet and a front facet having a reflectance of less than about 1% for emitting an optical beam at a fundamental frequency along an optical path. A collimating lens is provided for colli... | 02/13/2007 |
| 7177502 | Heating optical devices A thermo-optical device may use a heater to tune an optical device such as an optical switch, a Mach-Zehnder interferometer, or a variable optical attenuator, to mention a few examples. In some embodiments, polarization-dependent losses caused by the heating and pow... | 02/13/2007 |
| 7177081 | High contrast grating light valve type device A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the conditions for constructive and destructive interference with an incident... | 02/13/2007 |
| 7177332 | Laser frequency stabilization device and a method for laser frequency stabilization A method for stabilizing a laser frequency using sub-Doppler spectral spectrum of atoms, and a laser frequency stabilization device used in the method which is comprised of a gas charged cell, a laser, a laser frequency adjusting means, a laser beam dividing means f... | 02/13/2007 |
| 7173955 | Laser stimulated sympathetic vibration of molecular structure of a body A laser system outputs a laser light which is directed toward an object. The laser light has a frequency corresponding to the sympathetic or natural vibration frequency of molecules forming the object. The laser light is controlled so that in response to interaction... | 02/06/2007 |
| 7173551 | Increasing data throughput in optical fiber transmission systems Data throughput rates are increased in an optical fiber communication system without requiring replacement of the existing optical fiber in a link. Channel throughput is increased by upgrading the components and circuitry in the head and terminal of an optical fiber... | 02/06/2007 |
