Phase Sensitive Innovations, Inc.
|Phase Sensitive Innovations, Inc. Patent applications|
|Patent application number||Title||Published|
|20150139656||RECYCLED CARRIER MODULATION IN COMPOUND RESONATOR CONFIGURATIONS - An optical modulation apparatus for modulating an electromagnetic (e.g., radio frequency (RF)) signal onto an optical carrier signal may be arranged to feed back at least a portion of the optical carrier signal, while excluding first-order sidebands, which may help increase modulation efficiency and improve output power, while retaining high modulation bandwidth. Such arrangements may be implemented, for example, using a Fabry-Perot resonator or a ring resonator in combination with a Mach-Zehnder interferometer or a Michelson interferometer.||05-21-2015|
|20150139253||RECYCLED-CARRIER MODULATION - An optical modulation apparatus for modulating an electromagnetic (e.g., radio frequency (RF)) signal onto an optical carrier signal may use carrier recycling to increase modulation efficiency. Such an arrangement may be implemented, e.g., using a Fabry-Perot topology and/or using a travelling-wave modulator.||05-21-2015|
|20140270783||RADIO-FREQUENCY SIGNAL REPETITION AND AMPLIFICATION USING PHASE-MODULATION INJECTION-LOCKED LASERS - A method and apparatus for regenerating a received radio frequency (RF) signal may mix the received RF signal with a first laser signal, and the result, or a filtered version thereof, may be used to injection-seed a second laser. The result may be mixed with the first laser signal, and the result may be detected to provide a regenerated version of the received RF signal.||09-18-2014|
|20140255039||ESTABLISHING OPTICAL COHERENCE USING FREE-SPACE OPTICAL LINKS - An apparatus and/or method may be used for distributed synchronization of oscillators at non-collocated stations by means of transmitting and receiving optical signals having frequencies related to a desired oscillator frequency.||09-11-2014|
|20140192161||THREE-DIMENSIONAL RECONSTRUCTION OF A MILLIMETER-WAVE SCENE BY OPTICAL UP-CONVERSION AND CROSS-CORRELATION DETECTION - An apparatus and method may be used to create images, e.g., three-dimensional images, based on received radio-frequency (RP), e.g., millimeter wave, signals carrying image data. The RF signals may be modulated onto optical carrier signals, and the resulting modulated optical signals may be cross-correlated. The resulting cross-correlations may be used to extract image data that may be used to generate three-dimensional images.||07-10-2014|
|20140079351||MILLIMETER-WAVE ELECTRO-OPTIC MODULATOR - A lithium niobate-based electro-optic modulator may include a ridged optical waveguide structure and/or a thinned substrate.||03-20-2014|
|20130301664||HIGH SPECTRAL-PURITY CARRIER WAVE GENERATION BY NONLINEAR OPTICAL MIXING - Signal generating systems and methods are described. One signal generation system includes first and second lasers configured to generate first and second laser beams having respective frequencies wherein a difference in the respective frequencies corresponds to an output frequency, a photodetector configured to produce a signal at the output frequency, and first and second electro-optic modulators configured to respectively electro-optically modulate the first and second laser beams using the signal to produce respective first and second modulated optical signals, each of the first and second modulated optical signals having a respective sideband corresponding to the frequency of the other one of the first and second laser beams. The first laser is seeded with the respective sideband of the second modulated optical signal and the second laser is seeded with the respective sideband of the first modulated optical signal to phase-lock the first and second laser beams to each other.||11-14-2013|
|20120288214||Coherence Switching - A first image may be obtained using locked (relative) phases. A second image may be obtained using unlocked (e.g., randomized) phases. Data of the second image may be subtracted from data of the first image. The result may then undergo further processing, if desired, e.g., to further enhance the resulting image.||11-15-2012|
|20110073772||METHOD FOR CONTROLLING THE PHASE OF OPTICAL CARRIERS IN MILLIMETER WAVE IMAGING SYSTEMS USING OPTICAL UPCONVERSION - A system and method for locking the relative phase of multiple coherent optical signals, which compensates for optical phase changes induced by vibration or thermal changes in the environment.||03-31-2011|
|20100271683||CONTROLLING THE PHASE OF OPTICAL CARRIERS - A system and method for locking the relative phase of multiple coherent optical signals, which compensates for optical phase changes induced by vibration or thermal changes in the environment.||10-28-2010|
Patent applications by Phase Sensitive Innovations, Inc.