Class 359/331 - Optical laser acoustic delay line type

Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein the output from a laser is mode-locked
No. of patents: 24
Last issue date: 06/14/2011

Number	Title	Issue Date
7961379	Pump probe measuring device and scanning probe microscope apparatus using the device A pump probe measuring device (1) includes an ultrashort optical pulse laser generator (11) for generating a first ultrashort optical pulse train, which becomes a pump light, and a second ultrashort optical pulse train, which becomes a probe light, a d...	06/14/2011
7387027	Characterization of materials with optically shaped acoustic waveforms A method for characterizing one or more properties of a sample using acoustic waveforms is disclosed, and comprises directing a sequence of at least three optical pulses to the sample to generate an acoustic response in the sample at a frequency corresponding to the...	06/17/2008
7369600	Burst communications apparatus and method using tapped delay lines A communications apparatus and method use tapped delay lines as multiplexers and demultiplexers. In one embodiment, a receiver (100) uses a tapped delay line (110) as a demultiplexer to acquire a burst communication at very high data rates in the range...	05/06/2008
7352506	Method and system for sensing environmental characteristics A system for sensing characteristics of the environment is disclosed. Sensors utilize exponential growth of a signal initiated by interaction of a sensor element with characteristics of the environment. Specific substances in the environment can be detected. The sen...	04/01/2008
7236293	Frequency converter using optical excitation surface plasma and its method A frequency converter having no solid-state devices having nonlinear characteristics and no complex resonator structure and operable in a wide frequency range from microwave frequencies to terahertz wave frequencies. An input section (1) inputs an input wave ...	06/26/2007
7184616	Method and apparatus for fiber Bragg grating production Fiber Bragg writing devices comprising solid state lasers are provided. The solid state lasers comprise optical parametric oscillators and emit moderate peak-power output beams at wavelengths which are suitable for efficient production of fiber Bragg gratings withou...	02/27/2007
7139490	All-optical wavelength converter circuit A method and apparatus for transferring information of an optical information-bearing signal from a first wavelength to a second wavelength. The method is implemented in an all-optical wavelength converter circuit which includes a laser diode in communication with a...	11/21/2006
7092596	Repetitive waveform generator recirculating delay line A recirculating delay line that includes an optical delay circuit generates repetitions of an input signal waveform that is of limited time duration. ...	08/15/2006
6961483	Technique for mitigation of polarization mode dispersion in fiber optic transmission links A technique for PMD mitigation in an optical communications system that utilizes a plurality of polarization rotators in an optical fiber to continuously rotate the polarization state of at least one optical signal that propagates through the fiber. The optical fibe...	11/01/2005
6727767	Voltage controlled oscillator with two layered mounting structure A voltage controlled oscillator is provided. The oscillator includes a surface acoustic wave element for forming a feedback circuit for an amplifier, and a phase adjustment circuit including a filter which is interposed in the feedback circuit. The oscillator also h...	04/27/2004
6654127	Optical delay line One embodiment of the present invention is an optical delay line that comprises a plurality of optical elements in optical communication with each other, wherein: (a) at least one of the plurality of optical elements is capable of spatially dispersing a s...	11/25/2003
6587257	Non-linear subcarrier predistortion and upconversion system A method and apparatus for harmonically upconverting a phase and/or amplitude modulated subcarrier signal to a higher frequency through a non-linear optical link is disclosed. The method requires that a bandpass signal, with a carrier frequency at a submu...	07/01/2003
6549319	Apparatus for optical wavelength conversion An optical wavelength converting apparatus for use with a light source providing a light beam having a wavelength λ, the apparatus comprises an optical wavelength conversion module and a wavelength controller. The optical wavelength conversion module com...	04/15/2003
6421164	Interferometeric imaging with a grating based phase control optical delay line An apparatus for performing high speed scanning of an optical delay and its application for performing optical interferometry, ranging, and imaging, including cross sectional imaging using optical coherence tomography, is disclosed. The apparatus achieves...	07/16/2002
6396617	Photonic band gap device and method using a periodicity defect region doped with a gain medium to increase photonic signal delay A photonic band gap structure device and method for delaying photonic signals of a predetermined frequency and a predetermined bandwidth by a predetermined delay is provided. A Fabry-Perot delay line device has several regions of periodically alternating ...	05/28/2002
6288659	Data conversion using time manipulation A method and apparatus for data conversion using time manipulation is disclosed. Ultrafast analog-to-digital (A/D) conversion and digital-to-analog I/A) conversion are achieved by optoelectronic time-stretching or time-compression, respectively. A pulsed ...	09/11/2001
6282011	Grating based phase control optical delay line An apparatus for performing high speed scanning of an optical delay and its application for performing optical interferometry, ranging, and imaging, including cross sectional imaging using optical coherence tomography, is disclosed. The apparatus achieves...	08/28/2001
5907427	Photonic band gap device and method using a periodicity defect region to increase photonic signal delay A photonic band gap structure device and method for delaying photonic signals of a predetermined frequency and a predetermined bandwidth by a predetermined delay is provided. A Fabry-Perot delay line device has several regions of periodically alternating ...	05/25/1999
5864421	Optical frequency shifter and optical soliton-like return-to-zero pulse transmission system using optical frequency shifter An optical frequency shifter which has no insertion loss polarization dependency and no polarization mode dispersion is formed by: at least one ultrasonic wave generator for generating ultrasonic waves; at least one electric acousto-optic element forming ...	01/26/1999
5786930	Optical frequency sweep signal generator An optical frequency sweep signal generator using an optical frequency variable bandpass filter which can be practically used is provided. The optical frequency sweep signal generator comprises: a circulation control circuit for generating a first electri...	07/28/1998
5761351	Wavelength-addressable optical time-delay network and phased array antenna incorporating the same An optical switch network which includes a plurality N of cascaded optical switching stages, each mth one of the switching stages including 2m-1 Mach-Zehnder interferometers, where m=1 through N. The input port of the Mach-Zehnder interferomete...	06/02/1998
5495365	Finder optical system A finder optical system includes an objective system having a positive refracting power, a reflecting member having a field frame of variable shape, for erecting an image, and an eyepiece system having a positive refracting power. At least one positive le...	02/27/1996
5373381	Terahertz repetition rate optical computing systems, and communication systems and logic elements using cross-phase modulation based optical processors Optical communication systems, optical computing systems and optical logic elements which rely on the phenomina of cross-phase modulation to alter and control, either or simultaneously, the spectral, temporal or/and spatial properties of ultrashort light ...	12/13/1994
5034627	Power laser generator with control of the direction of emission of the output beam This invention relates to power laser generators in which it is possible to control the angular direction of output laser beams. The generator according to the present invention is characterized by the fact that it successively comprises on the same optic...	07/23/1991

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Class 359/331 - Optical laser acoustic delay line type