Class / Patent application number | Description | Number of patent applications / Date published |
385030000 | Evanescent wave coupling | 26 |
20080285917 | Method and apparatus for controlling light flux with sub-micron plasmon waveguides - Apparatuses and methods for modulating electromagnetic radiation are disclosed. A plasmon waveguide including an array of metallic nanoparticles disposed on a dielectric substrate is provided. The plasmon waveguide is disposed on a MEMS structure. An electromagnetic radiation signal is applied to a tapered fiber disposed proximate the MEMS structure. The intensity of the electromagnetic radiation signal passing through the tapered fiber is modified by displacing a deformable member of the MEMS structure to modify a distance between the plasmon waveguide and the tapered fiber such that an evanescent field of the tapered fiber causes a plasmon resonance in the plasmon waveguide. | 11-20-2008 |
20090220194 | PLASMONIC ANTENNA FEED AND COUPLING METHOD AND DEVICE - A plasmonic antenna feed and coupling device is disclosed that can include an antenna and a waveguide operatively coupled to the antenna. Surface plasmon polaritons generated on a surface of the antenna can be guided in a plasmonic state from the antenna through the waveguide. A method of plasmonic field guidance can include generating surface plasmon polaritons on a surface of an antenna, guiding the surface plasmon polaritons in a plasmonic state from the antenna to a waveguide and coupling the surface plasmon polaritons in a plasmonic state to a port. | 09-03-2009 |
20090238515 | Tunable Ring Resonator - A ring resonator has a first optical waveguide arranged in a loop, a second optical waveguide tangentially optically coupled to the first optical waveguide, and a translatable body configured to selectively move into an evanescent field region of said first optical waveguide. | 09-24-2009 |
20090274418 | REDUCTION OF SUBSTRATE OPTICAL LEAKAGE IN INTEGRATED PHOTONIC CIRCUITS THROUGH LOCALIZED SUBSTRATE REMOVAL - Structures including optical waveguides disposed over substrates having a chamber or trench defined therein, and methods for formation thereof. | 11-05-2009 |
20100266238 | Evanescent electromagnetic wave conversion methods III - Apparatus, methods, and systems provide conversion of evanescent electromagnetic waves to non-evanescent electromagnetic waves and/or conversion of non-evanescent electromagnetic waves to evanescent electromagnetic waves. In some approaches the conversion includes propagation of electromagnetic waves within an indefinite electromagnetic medium, and the indefinite medium may include an artificially-structured material such as a layered structure or other metamaterial. | 10-21-2010 |
20100266239 | Evanescent electromagnetic wave conversion methods I - Apparatus, methods, and systems provide conversion of evanescent electromagnetic waves to non-evanescent electromagnetic waves and/or conversion of non-evanescent electromagnetic waves to evanescent electromagnetic waves. In some approaches the conversion includes propagation of electromagnetic waves within an indefinite electromagnetic medium, and the indefinite medium may include an artificially-structured material such as a layered structure or other metamaterial. | 10-21-2010 |
20110081109 | NANOPARTICLE ARRAY PHOTONIC WAVEGUIDE - A nanoparticle array photonic waveguide, a photonic transmission system and a method of photonic transmission compensate for optical loss in an optical signal through stimulated emission using an optical gain material in a core of composite nanoparticles. The nanoparticle array photonic waveguide includes a plurality of the composite nanoparticles arranged adjacent to one another in a row. A composite nanoparticle of the plurality includes a shell and a core. The shell includes a negative dielectric constant material that is capable of supporting an optical signal on a surface of the shell. The core is adjacent to a side of the shell opposite to the shell surface. The core includes an optical gain material (OGM) that is capable of providing optical gain to the optical signal through stimulated emission within the OGM. | 04-07-2011 |
20110091155 | IN-LINE FORWARD/BACKWARD FIBER-OPTIC SIGNAL ANALYZER - An optical connector having a plurality of directional taps and connecting between a plurality of optical waveguides (e.g., such as a connector between a waveguide that is part of, or leads from, a seed laser and/or an initial optical-gain-fiber power amplifier, and a waveguide that is part of, or leads to, an output optical-gain-fiber power amplifier and/or a delivery fiber), wherein one of the directional taps extracts a small amount of the forward-traveling optical output signal from the seed laser or initial power amplifier (wherein this forward-tapped signal is optionally monitored using a sensor for the forward-tapped signal), and wherein another of the directional taps extracts at least some of any backward-traveling optical signal that may have been reflected (wherein this backward-tapped signal is optionally monitored using a sensor for the backward-tapped signal). | 04-21-2011 |
20110176768 | OPTICAL SPECTRAL FILTER, ANGULAR FILTER AND POLARISER - A filter and fabrication process for a thin film filter that is based on frustrated total internal reflection and multiple waveguide layers, in which the waveguide modes are resonantly coupled. The physics of the design is related to prism coupling of light into planar waveguides, and waveguide coupling between planar waveguides in close proximity. Embodiments include a filter that acts as a bandpass filter and polarizer, a filter that acts as a bandpass filter, polarizer and angle filter (spatial filter), a filter that is widely tunable, and a filter that is widely tunable in both peak transmission wavelength and width. Methods of fabrication are disclosed, and methods to correct for manufacturing errors in thin film deposition are described. The filter embodiments can also be used in reflection as notch filters in wavelength and angle, for a particular polarization component. | 07-21-2011 |
20110217003 | Waveguide For Heat Assisted Magnetic Recording - An apparatus includes a slider mounted on an arm, a first waveguide including a first core guiding layer, a second waveguide mounted on the slider and including a second core guiding layer having a uniform thickness smaller than the thickness of the first core guiding layer, and a coupler for coupling light from the first core guiding layer to the second core guiding layer, wherein the coupler comprises a curved mirror formed in the second waveguide and positioned to reflect light from the first core guiding layer into the second core guiding layer. | 09-08-2011 |
20120213474 | Coupled Photonic Microdevices With Sub-Wavelength Feature Size - Complex, coupled photonic microdevices are formed to include sub-wavelength-sized radial perturbations sufficient to create resonant cavities, where these devices may be formed along the length of a single optical fiber and coupled together to form relatively complex photonic devices. By carefully selecting the placement and separation of these local radius variations, and using microfibers (or other suitable arrangements) to couple optical signals into and out of the device fiber, resonances in the form of whispering gallery modes (WGMs) are created in the device fiber such that a number of coupled microstructures (such as ring resonators) may be formed. | 08-23-2012 |
20130022312 | Deep-Shallow Optical Radiation Filters - An optical coupler for processing radiation is described. The optical coupler comprises a first deep-shallow waveguide and a second deep-shallow waveguide for guiding radiation in a propagation direction. Each of the deep-shallow waveguides is a waveguide comprising a shallow etched portion and an unetched portion having a width substantially constant along the propagation direction. The width of the shallow etched portion is substantially larger than the width of the unetched portion. The shallow etched portion of the first deep-shallow waveguide and the shallow etched portion of the second deep-shallow waveguide are arranged sufficiently close for coupling radiation from the first deep-shallow waveguide to the second deep-shallow waveguide. | 01-24-2013 |
20130064501 | TUNABLE OPTICAL APPARATUS, METHOD, AND APPLICATIONS - A broadly tunable optomechanical apparatus includes a resonator component consisting of two coupled optical microring resonators disposed in a stacked relationship, an input waveguide disposed adjacent a periphery of the resonator component, and a control signal waveguide coupled to the resonator component or the input signal waveguide. A broadband optical switch includes a plurality of resonator components each of which corresponds to a selected signal wavelength, predetermined by the geometry and design of the resonator component, and a respective plurality of output signal waveguides, and a respective plurality of a control signal waveguides each coupled to a respective resonator component. Associated tuning and switching methods and applications are disclosed. | 03-14-2013 |
20130129279 | OPTICAL FIBER TAPPING DEVICE - An apparatus for coupling an optical fiber embedded within a member to a waveguide is disclosed. The embedded optical fiber has a core and a cladding surrounding the core. A block includes an engagement surface for positioning adjacent the member to facilitate removal of a portion of the cladding surrounding the core of the embedded optical fiber, a monitoring region adjacent which a portion of a waveguide is positioned, and a waveguide having a first section positioned at the monitoring region and a second section configured to be connected to an optical measuring element for measuring a transmission through passing through the waveguide. | 05-23-2013 |
20130279848 | METHOD AND APPARATUS PROVIDING A COUPLED PHOTONIC STRUCTURE - Described embodiments include optical connections for electronic-photonic devices, such as optical waveguides and photonic detectors for receiving optical waves from the optical waveguides and directing the optical waves to a common point. Methods of fabricating such connections are also described. | 10-24-2013 |
20130279849 | MICRO-RING OPTICAL RESONATORS - Apparatuses, systems, and methods for micro-ring optical resonators are provided. An example of a micro-ring optical resonator apparatus includes an array of input waveguides with each input waveguide optically coupled to an array of micro-rings, an output waveguide operatively associated with each of the micro-rings, and a scattering object operatively associated with each of the micro-rings, wherein the scattering object is connected to the output waveguide. | 10-24-2013 |
20130301985 | MONOLITHIC INTEGRATED STRUCTURE COMPRISING A BURIED HETEROSTRUCTURE SEMICONDUCTOR OPTICAL AMPLIFIER AND A PHOTODETECTOR - A monolithic integrated structure comprising a buried heterostructure semiconductor optical amplifier and a deep ridge optical receiver comprising such structure are disclosed. | 11-14-2013 |
20130322817 | NANOMECHANICAL PHOTONIC DEVICES - Devices which operate on gradient optical forces, in particular, nanoscale mechanical devices which are actuable by gradient optical forces. Such a device comprises a waveguide and a dielectric body, with at least a portion of the waveguide separated from the dielectric body at a distance which permits evanescent coupling of an optical mode within the waveguide to the dielectric body. This results in an optical force which acts on the waveguide and which can be exploited in a variety of devices on a nano scale, including all-optical switches, photonic transistors, tuneable couplers, optical attenuators and tuneable phase shifters. | 12-05-2013 |
20150338627 | APPARATUS AND METHOD FOR ATOMIC FORCE, NEAR-FIELD SCANNING OPTICAL MICROSCOPY - A near-field optic has a high refractive index waveguide with a planar far field facet more than half of a wavelength across for coupling propagating light and a near field facet with the near field zone of the waveguide supporting only the fundamental optical mode in each polarization. A tapered waveguide section extends from the near field facet to transform the fundamental optical mode. A cantilever supports the tapered waveguide section. | 11-26-2015 |
20160047981 | END PUMPED PWG WITH TAPERED CORE THICKNESS - A planar wave guide (PWG) having a first end for coupling to a light pump and a second end opposite to the first end and including a first cladding layer; a second cladding layer; and a uniformly doped core layer between the first cladding layer and the second cladding layer, wherein the core layer is tapered having a smaller thickness at the first end and a larger thickness at the second end, and wherein a ratio of the core thickness to thickness of the cladding layers is smaller at the first end and larger at the second end. | 02-18-2016 |
20160047982 | ASYMMETRIC PWG WITH ASYMMETRIC COOLING - A planar waveguide (PWG) having a first end for coupling to a light pump and a second end opposite to the first end and including: a first cladding layer; a uniformly doped core layer having the first cladding layer on one side, wherein the core layer is tapered having a smaller thickness at the first end and a larger thickness at the second end; and a second cladding layer thinner than the first cladding layer, coated on another side of the core layer opposite to said one side of the core layer. The first cladding layer may also be tapered along the length of the PWG having a larger thickness at the first end and a smaller thickness at the second end with a taper angle substantially opposite that of the core layer to form the PWG with a substantially uniform overall thickness along the length. | 02-18-2016 |
20160047984 | EVANESCENT LIGHT GENERATION ELEMENT AND EVANESCENT LIGHT GENERATION DEVICE - An evanescent light generation element for oscillating evanescent light from an optical waveguide to a clad layer, including a 0.1 μm-10 μm thin layer composed of a ferroelectric single crystal or oriented crystal having first and second principal surfaces, and incident side end and exit side end surfaces. A ridge optical waveguide is formed in the thin layer and extends between the incident and exit side end surfaces of the thin layer. At least a pair of grooves is formed on both sides of the ridge optical waveguide in the thin layer and opened at the first principal surface of the thin layer. A clad layer is provided on the first principal surface or the second principal surface. A width of the ridge optical waveguide at the exit side end surface is less than a width of the ridge optical waveguide at the incident side end surface. | 02-18-2016 |
20160047988 | METHODS AND SYSTEMS FOR DELAYING OPTICAL WAVES - Coupled-resonator optical waveguides (CROW) can be used to control a speed of an optical signal. In particular, the coupling distance between the resonators can be adjusted to precisely control a group delay of an optical wave. Systems and methods are described to control such coupling distance in a CROW. | 02-18-2016 |
20160070062 | ATHERMAL OPTICAL DEVICES BASED ON COMPOSITE STRUCTURES - Methods, systems, and devices are disclosed for implementing athermal optical devices based on composite structures having different components with different thermal properties such as a composite structure having materials of positive and negative thermo-optic effects or a composite structure having materials exhibiting different thermal expansion coefficients. In one aspect, a method for providing thermally stabilized optical device structure against temperature fluctuations includes forming an optical device structure to include a first optical material and a second optical material different from the first optical material, in which one of the first and second optical material exhibits a positive thermal-optic effect and the other one exhibits a negative thermal-optic effect, and structuring the first and second optical materials in the optical device structure to reduce a change in an effective refractive index of the optical device structure collectively produced by the first and second optical materials in response to a temperature variation. | 03-10-2016 |
20160070067 | PRE-ASSEMBLED WHISPERING GALLERY MODE RESONANCE SENSORS, FOR USE AS DIP SENSORS OR VAPOR SENSORS, FOR EXAMPLE, AND METHODS FOR MAKING SUCH SENSORS - A robust sensor, suitable for dipping into fluid wells, includes (a) a stem; (b) a whispering gallery mode (“WGM”) resonator mechanically supported by the stem; and (c) feed and pickup optical fibers optically coupled with the WGM resonator and mechanically coupled with the stem, thereby defining a stem-resonator-fiber assembly, wherein a portion of the stem-resonator-fiber assembly including the WGM resonator can fit within an imaginary cylinder having a diameter of 7 mm (or 2 mm, or even 1 mm). Such a whispering gallery mode (“WGM”) dip sensor, including (1) a stem, (2) a WGM resonator, and (3) feed and pickup optical fibers, may be made by (a) fabricating the WGM resonator and the stem from an optical fiber; (b) fabricating tapers on the feed and pickup fibers; (c) positioning tapers of the feed and pickup fibers relative to the WGM resonator such that an optical coupling between the tapers and the WGM resonator is established; and (d) mechanically coupling the stem with the feed and pickup fibers. | 03-10-2016 |
20160077282 | FIBER-WAVEGUIDE EVANESCENT COUPLER - Methods, systems, and devices are disclosed for implementing a fiber-waveguide evanescent coupling. In one aspect, a device having integrated photonic components includes a substrate, a waveguide formed on the substrate to include a terminal waveguide portion that terminates at one side of the substrate, and a fiber including a fiber core and fiber cladding surrounding the fiber core, in which at least a portion of the fiber cladding is removed at or near a fiber terminal end to enable optical evanescent coupling via a side surface of the fiber core at the or near the fiber terminal end, the fiber core at the or near the fiber terminal end is placed over the one side of the substrate to be above and to overlap with the terminal waveguide portion of the waveguide to enable optical evanescent coupling via side surfaces of the fiber core and the waveguide. | 03-17-2016 |