Patent application number | Description | Published |
20080213524 | Method for Making Three-Dimensional Structures on a Substrate Having Micron Dimensions, and an Article of Manufacture Three-Dimensional Objects on a Substrate with Micron Dimensions - A method and article of manufacture for three-dimensional structures having micron dimensions includes coating a substrate with layers of photo resist. Each layer of photo resist is exposed with its own two-dimensional mask defining one slice of an object. Subsequent layers of photo resist are exposed with different patterns. Once all layers have been fabricated and exposed to identify two-dimensional features for the layer, the multiple layers are developed to removed photo resist which has not been exposed. The layered structure represents a three-dimensional object where the depth dimension is defined by the photo resist layer thickness. By decreasing the wavelength of the light exposure, it is possible to confine exposure to a single layer of photo resist. | 09-04-2008 |
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 |
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 |
20110230035 | Transfer Method for Thin Film Nanomembrane Structures - A transfer process for silicon nanomembranes (SiNM) may involve treating a recipient substrate with a polymer structural support. After treating the recipient substrate, a substrate containing the intended transferable devices may be brought in direct contact with the aforementioned polymer layer. The two substrates may then go through a Deep Reactive Ion Etch (DRIE) to remove at least a portion of the substrate containing the devices. Oxide may be selectively removed with a buffered oxide wet etch, leaving the transferred SiNM on the recipient substrate with the Underlying polymer layer. | 09-22-2011 |
20110305456 | OPTICAL ROUTER - An optical routing element may include a planar dielectric photonic crystal which includes a lattice of holes having a first linear defect adjacent a second linear defect, with the two defects being separated by a central row of lattice holes. The first linear defect in the lattice of holes may form a first single mode line defect waveguide, and the second linear defect in the lattice of holes may form a second single mode line defect waveguide. Optical energy may be selectively coupled between the first and second waveguides across the central row of lattice holes. A free-carrier injector may be included to inject free-carriers into the dielectric photonic crystal, activation of which may alter selectivity of the optical coupling between the first and second waveguides. A plurality of optical routing elements with associated free-carrier injectors may be interconnected to form a bi-directional optical routing array. | 12-15-2011 |
20120257851 | OPTICAL LOGIC GATES USING SLOW-LIGHT BASED COUPLED PHOTONIC CRYSTAL WAVEGUIDES - An optical logic gate may be composed of a host material having air holes disposed therein and having parallel optical waveguides formed therein. | 10-11-2012 |
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 |
20130140723 | METHOD OF FABRICATING AN OPTICAL GRATING - According to embodiments of the invention, the design and fabrication of a binary superimposed grating (BSG) results in better performing devices that may be fabricated using existing technology. The fabrication process includes forming grating features based upon repeating features of the desired superposition function. The design process also relaxes the processing requirement for equivalently performing devices. | 06-06-2013 |
20130266253 | SYSTEM AND METHOD FOR SUBSTRATE THINNING IN ELECTRO-OPTICAL MODULATORS - A method for manufacturing a modulator device is provided. The method includes providing an at least partially completed modulator having a top and a bottom and a substrate; fixedly mounting the top of the modulator on a mechanical support; removing from the bottom of the modulator a portion of the substrate, thereby forming a groove in the substrate; and separating the modulator with the groove from the mechanical support; wherein the reduced thickness of the substrate in the area of the groove restricts the flow of energy leakage into the substrate. | 10-10-2013 |
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 |
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 |
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 |
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 |
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 |