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7602499 |
Measuring polarization mode dispersion
A device for measuring polarization mode dispersion (PMD) in a device under test (DUT) includes a polarized light source for launching a test beam through the DUT, and a PMD analyzer, which uses...
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7599069 |
Vector beam generator using a passively phase stable optical interferometer
Provided are techniques for generating optical vector beams (e.g., radially and azimuthally polarized light) using passive or active phase stable optical interferometry. Techniques may split an...
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7583368 |
Method of enhancing measurement of stress in glass
A detection system for measuring glass that has been placed under strain and the resulting stress lines in the glass has a light source of individual elements configured to create a light...
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7573579 |
Coded aperture imaging photopolarimetry
An imaging polarimeter includes a polarization dispersing element, a spatial light modulator, a complementary polarization dispersing element, a polarization analyzer, an electronic detection...
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7570851 |
Ultrashort photonic waveform measurement using quasi-phase-matched non-linear optics
A short-pulse measurement and detection apparatus utilizing an aperiodic non-linear quasi-phase matched (A-QPM) material. The bandwidth of the A-QPM non-linear material is such that an interaction...
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7551294 |
System and method for brewster angle straddle interferometry
A system and method for biomolecular sensing are disclosed. The system includes a receptor for a target, a source of p-polarized light positioned to direct light toward the receptor in a manner...
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7551267 |
Systems and methods for measuring ultra-short light pulses
Systems and methods for measuring a pulse length (τ 0 ) of an ultra-short light pulse (P 0 ) based on processing a number of substantially similar light pulses. The system includes an...
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7541600 |
Lithographic and measurement techniques using the optical properties of biaxial crystals
A method and apparatus for accurately retrieving the position of an optical feature. The method uses the optical properties of biaxial crystals to conically refract the optical feature and...
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7508526 |
Defect inspecting apparatus
In a defect inspecting apparatus, a differential interference optical system forms a differential interference image which is produced from an optical interference of images in a predetermined...
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7486893 |
Dynamic optical interconnect system reference signal formation
The disclosed technology provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with the disclosed technology, two...
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7483146 |
Systems configured to provide illumination of a specimen or to inspect a specimen
Systems configured to provide illumination of a specimen or to inspect a specimen are provided. One system includes a light source configured to generate pulses of light at a repetition rate. The...
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7483145 |
Simultaneous phase shifting module for use in interferometry
A back-end assembly for use with a front-end assembly in acquiring phase-shifted interferograms having a plurality of imaging modules (Ma, Mb, Mc). Each module (Ma, Mb, Mc) has a quarter wave plate...
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7466425 |
Elementary matrix based optical signal/network analyzer
A method for characterizing a device under test includes propagating multiple optical signals through the device under test and combining the multiple optical signals with a reference optical...
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7463361 |
Optical apparatus having a polarization splitter and multiple interferometers
A passive optical system substantially simultaneously separates light received at an optical input into three or more output light beams on optical outputs. The output light beams may have...
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7440108 |
Imaging spectrometer including a plurality of polarizing beam splitters
The present invention relates to an imaging apparatus and comprises input and output polarisers, a first polarising beam splitter and at least one additional polarising beam splitter, a light...
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7426021 |
Interferometric optical analyzer and method for measuring the linear response of an optical component
An interferometric optical analyzer apparatus comprises a light source, an interferometer and a detection system for determining the linear response, and subsequently any optical parameter, of one...
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7422891 |
Label-free high-throughput optical technique for detecting biomolecular interactions
Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also...
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7407817 |
Surface plasmon resonance sensors and method for detecting samples using the same
Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by...
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7388673 |
Heterodyne optical spectrum analyzer
A heterodyne optical signal analyzer (HOSA) permits accurate reconstruction of an optical input signal (Es) in the time domain. In one embodiment, a vector representation of the light is used to...
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7362445 |
Active control and detection of two nearly orthogonal polarizations in a fiber for heterodyne interferometry
A polarization control system includes a light source that generates two light beams with different polarization states and optical frequencies. A polarization state modulator changes the...
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7359061 |
Method and apparatus for providing polarization insensitive signal processing for interferometric sensors
A method and apparatus that uses specific source modulation and detectors to detect a response that carries information about a system response matrix associated with each sensor in a...
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7352469 |
Quantum resonance analytical instrument
Quantum resonance fluorescent microscope systems for detecting component substances in a specimen are described. The systems are based on exciting the sample containing the material with a...
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7349077 |
Method and apparatus for measuring the polarization mode dispersion of an optical fiber
The present invention relates to a new model for interpreting interferometric measurements, able to lead to a new method, system ( 10 ) and device ( 27 ) for measuring the PMD (Polarisation Mode...
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7345769 |
Load dependent analyzing optical components
The present invention relates to an apparatus and to a method of load dependent analyzing an optical component ( 114 ), comprising the steps of: splitting an initial signal ( 115 ) into the...
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7339681 |
Surface plasmon resonance microscope using common-path phase-shift interferometry
The present invention integrates the surface plasmon resonance and common-path phase-shift interferometry techniques to develop a microscope for measuring the two-dimensional spatial phase...
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7333212 |
Method and apparatus for measuring the absorption coefficient and the reduced scattering coefficient of a multiple scattering medium
In a method for measuring an absorption coefficient and a reduced scattering coefficient of a multiple scattering medium, a source light beam is outputted, and is transformed into a transformed...
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7298492 |
Method and system for on-line measurement of thickness and birefringence of thin plastic films
A system and method for analyzing the characteristics of a thin film is provided whereby the in-plane birefringence of thin films is determined by measuring the interference fringes in the...
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7286245 |
Method and apparatus for determining the influencing of the state of polarization by an optical system; and an analyser
A method and an apparatus for determining the influencing of the state of polarization of optical radiation by an optical system under test, wherein radiation with a defined entrance state of...
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7277182 |
Apparatus for polarization-specific examination, optical imaging system, and calibration method
A device for polarization-specific examination of an optical system having a detector part that has polarization detector means for recording the exit state of polarization of radiation emerging...
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7265847 |
Birefringent optical temperature sensor and method
The invention concerns a tandem interferometer for temperature sensing. The low coherence interferometry (LCI) system comprises a polarization-based sensing interferometer comprising a birefringent...
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7259862 |
Low-coherence interferometry optical sensor using a single wedge polarization readout interferometer
The invention provides a method and a system for measuring a physical quantity by means of a tandem interferometer optical sensor system based on low-coherence interferometry. The system comprises...
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7254295 |
Optical fiber interferometer with relaxed loop tolerance and QKD system using the same
An optical fiber interferometer ( 10 ) with relaxed loop tolerance, and a quantum key distribution (QKD) system ( 200 ) using same is disclosed. The interferometer includes two optical fiber loops...
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7251039 |
Low non-linear error displacement measuring interferometer
An interferometer is provided that minimizes the introduction of non-linear errors into displacement measurements. In one embodiment, non-linear errors are reduced by isolating reference and...
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7230716 |
Method for measuring the absorption coefficient and the reduced scattering coefficient of a multiple scattering medium
In a method for measuring absorption and reduced scattering coefficients of a multiple scattering medium, a coherent light beam is outputted. The coherent light beam includes linear polarized P and...
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7227645 |
Method and apparatus for measuring polarization mode dispersion
Apparatus for measuring polarization mode dispersion (PMD) of a device, e.g. a waveguide, comprises a broadband light source ( 10,12 ) for passing polarized broadband light through the device ( 14...
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7212289 |
Interferometric measurement device for determining the birefringence in a transparent object
An interferometric measurement device for determining the birefringence in a transparent object comprises an interferometer with an input for an input light beam. At an output of the interferometer...
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7206069 |
Optical analyzers of polarization properties
A passive optical system substantially simultaneously separates light received at an optical input into three or more output light beams on optical outputs. The output light beams may have...
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7177491 |
Fiber-based optical low coherence tomography
Generally, and in one form of the present invention, is a polarization-maintaining fiber-based polarization sensitive optical low coherence reflectometer for depth resolved birefringence...
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7170611 |
Methods and apparatus for splitting, imaging, and measuring wavefronts in interferometry
Apparatus for splitting, imaging, and measuring wavefronts with a reference wavefront and an object wavefront. A wavefront-combining element receives and combines into a combined wavefront an...
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7151632 |
Apparatus for production of an inhomogeneously polarized optical beam for use in illumination and a method thereof
An apparatus for producing an inhomogeneously polarized optical beam from a homogeneously polarized input optical beam includes a first phase shifter, a second phase shifter, and one or more...
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7130055 |
Use of coefficient of a power curve to evaluate a semiconductor wafer
A coefficient of a function that relates a measurement from a wafer to a parameter used in making the measurement (such as the power of a beam used in the measurement) is determined. The...
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7127179 |
Polarization encoder device
A optical polarization encoding device ( 16 ) provides wavelength dependent processing of polychromatic optical signals without prior separation into narrow wavelength bands. Embodiments of the...
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7126691 |
Communications method and apparatus using quantum entanglement
A method and apparatus for transmitting information using the phenomenon of quantum entanglement. Two streams of quantum-entangled particles are emitted from a source. Performing a measurement on...
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7113707 |
Dynamic optical interconnect
This invention provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with this invention, two optical beams emanate...
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7102757 |
Current measurement method and device based on a fiber optic in-line Sagnac interferometer
A device for current measurement based on a fiber-optic in-line Sagnac interferometer includes a birefringence phase modulator for non-reciprocal phase modulation of two orthogonal polarization...
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7099014 |
Apparatus and method for joint measurement of fields of scattered/reflected or transmitted orthogonally polarized beams by an object in interferometry
A method of making interferometric measurements of an object, the method including: generating an input beam that includes a plurality of component beams, each of which is at a different frequency...
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7094595 |
Label-free high-throughput optical technique for detecting biomolecular interactions
Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also...
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7088453 |
Optical device having a rotatable birefringent crystal
An optical device has a rotatable birefringent crystal. The crystal is rotatable around a first axis ( 4; 42 ) and has a crystallographic-optical axis ( 6; 44 ) in a plane that is perpendicular to...
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7084980 |
SPR interferometer
The present invention concerns an interferometer comprising: an optical body adapted in operation to mount a measurement area comprising a film which is capable of acting as a two dimensional...
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7081959 |
Method and apparatus for providing polarization insensitive signal processing for interferometric sensors
A method and apparatus that uses specific source modulation and detectors to detect a response that carries information about a system response matrix associated with each sensor in a...
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