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7440660 |
Transducer for heat assisted magnetic recording
An apparatus includes a first waveguide configured to focus an electromagnetic wave to a focal region, and a second waveguide defining an opening having an end positioned adjacent to the focal...
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7440643 |
Variable light controlling device and variable light controlling method
A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is...
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7440671 |
Optical waveguide
Materials transparent to terahertz waves are very limited, and it is difficult to obtain the required performance by selecting the material. Further, it is also difficult to search for a novel...
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7440666 |
Buried heterostucture device having integrated waveguide grating fabricated by single step MOCVD
The device is an optoelectronic device or transparent waveguide device that comprises a growth surface, a growth mask, an optical waveguide core mesa and a cladding layer. The growth mask is...
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7433550 |
Optical modulator and control method therefor
A Mach-Zehnder optical modulator capable of feed-back compensating a change due to an optical coupling loss, and the characteristic change peculiar to functional devices, and a control method...
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7433567 |
Multi-quantum well optical waveguide with broadband optical gain
A multi-quantum well optical waveguide structure comprises a plurality of active regions including quantum wells with different gain peak wavelengths to provide an ultra broadband optical gain...
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7430355 |
Light emissive signage devices based on lightwave coupling
A signage device comprising one or more light sources, a waveguide or arrangement of waveguides and photoluminescent features coupled thereto. In one embodiment, a waveguide is adapted to receive...
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7428360 |
Optical waveguide sensor and method of manufacture
An optical waveguide environmental sensor is provided that is capable of detecting a target gas or liquid in the ambient environment in an advantageously short period of time. The waveguide is...
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7428351 |
Optical circuit fabrication method and device
A photonic light circuit device is described that comprises a semiconductor substrate ( 220 ) and two or more optical components ( 226, 228, 236, 240 ) wherein one or more hollow core optical...
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7428102 |
Optical element
An optical element which includes an optical block having a cavity part formed on an optical path and an inclined face formed in an internal face of the cavity part at a prescribed inclining angle...
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7428358 |
Optical coupler for coupling an optical fiber into a waveguide
An optical coupler for parallel coupling from a single mode optical fiber, or fiber ribbon, into a silicon-on-insulator (SOI) waveguide for integration with silicon optoelectronic circuits. The...
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7428348 |
Electro-optical switching using coupled photonic crystal waveguides
An electro-optical switch implemented in coupled photonic crystal waveguides is disclosed. The switch is proposed and analyzed using both a finite-difference time-domain (“FDTD”) method and a...
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7425275 |
Shadow mask and method of fabricating vertically tapered structure using the shadow mask
A method of fabricating a vertically tapered structure. The method includes placing a spacer layer at a predetermined area on a wafer, placing a mask layer at a predetermined area on the spacer...
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7426328 |
Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength
An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly...
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7422374 |
Optical printed circuit board blank, a kit and a method of making an optical printed circuit board
The present invention provides an optical printed circuit board blank, comprising, a support layer; one or more optical waveguides formed thereon; and at least one socket for receiving an optical...
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7421858 |
Optical transmission substrate, method for manufacturing optical transmission substrate and optoelectronic integrated circuit
Provided is an optical transmission substrate including: a first substrate; an optical waveguide which has clad covering a core and a periphery of the core and extends on an upper surface of the...
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7424192 |
Frequency conversion with nonlinear optical polymers and high index contrast waveguides
Systems and methods for manipulating light with high index contrast waveguides clad with substances having that exhibit large nonlinear electro-optic constants χ 2 and χ 3 . Waveguides...
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7421176 |
Waveguide element using photonic crystal
A waveguide element using a photonic crystal having a refractive index periodicity in one direction is provided with an input portion causing propagation light due to a band on a Brillouin zone...
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7421177 |
Optoelectronic component and method for controlling tunneling electron currents by means of photons
An optoelectronic component with a photonic crystal, which also has an electronic band gap, and a method for controlling tunneling electron currents by means of photons are proposed. Essentially...
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7421178 |
Left-handed materials and structures based on strong dielectric anisotropy
Disclosed herein are exemplary embodiments of materials and structures that have a negative refractive index. For example, one exemplary embodiment is a waveguide structure comprising a first...
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7421179 |
Apparatus and method for switching, modulation and dynamic control of light transmission using photonic crystals
An active device for dynamic control of the transmission properties has at least one photonic crystal waveguide that has an electrically insulating layer formed within or near the waveguide core...
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7421171 |
Efficient terahertz sources by optical rectification in photonic crystals and metamaterials exploiting tailored transverse dispersion relations
A system and a method for generating terahertz (THz) radiation are provided. The system includes a photonic crystal structure comprising at least one nonlinear material that enables optical...
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7417219 |
Effect of the plasmonic dispersion relation on the transmission properties of subwavelength holes
Using a realistic plasmonic model, an optically thick electrically conductive film with subwavelength hole or holes therein is shown to always support propagating modes near the surface plasmon...
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7418161 |
Photonic crystal-based optical elements for integrated circuits and methods therefor
Exemplary embodiments of the invention provide photonic crystal-based optical elements for integrated circuits. A photonic crystal optical device comprises a substrate and a plurality of pillars...
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7418164 |
Method for forming a photonic band-gap structure and a device fabricated in accordance with such a method
A device for application in the high frequency field and a method for forming a photonic band-gap structure are provided. The device being mountable on a primary substrate for forming the device....
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7418163 |
Optoelectrical package
An integrated optoelectrical package for optoelectrical integrated circuits (ICs) is disclosed. The package includes a package substrate having contact receiving members on an upper surface. The...
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7415183 |
Silica based glass waveguide and optical module using the same
A silica based glass waveguide having almost the same optical characteristics as designed value and an optical module using a silica based glass waveguide having excellent optical characteristics...
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7413430 |
Crystal base plate and pressing device
The upper block 12 contacts the bearing block 20 , and the bearing block 20 is coupled to the upper plate 21 . The upper block 12 has a protruding part 22 on the upper surface that is...
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7415184 |
Wideband optical coupling into thin SOI CMOS photonic integrated circuit
An arrangement for providing optical coupling into and out of a relatively thin silicon waveguide formed in the SOI layer of an SOI structure includes a lensing element and a defined reference...
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7415185 |
Buried-waveguide-type light receiving element and manufacturing method thereof
A buried-waveguide light detecting element includes an n-type cladding layer on a Fe-InP substrate, a waveguide on a portion of the n-type cladding layer, and in which an n-type light guide layer,...
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7412119 |
Apparatus and method for making flexible waveguide substrates for use with light based touch screens
Flexible optical waveguide substrates that can be used with touch screen displays. The waveguide substrates include a flexible base material. A first optical layer having a first index of...
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7412123 |
Hybrid free space fiber backplane
Briefly, in accordance with one or more embodiments, a backplane includes one or more optical links and is capable of receiving one or more circuit cards. Optical signals sent via the optical links...
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7412143 |
Heat assisted magnetic recording with heat profile shaping
A transducer comprises a conductive pin and a waveguide for directing electromagnetic radiation onto the pin, wherein the pin is configured to create a rectangular flat top field distribution at a...
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7410794 |
Device based on partially oxidized porous silicon and method for its production
Device having a flat macroporous support material made of silicon and having surfaces, a plurality of pores each having a diameter in a range of from 500 nm to 100 μm distributed over at least one...
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7412144 |
Photonic crystal-based optical waveguide modulator
A waveguide has upper and lower cladding regions. A core of the waveguide made of a non-linear optical polymer is positioned between the upper and lower cladding regions. A first electrode is...
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7412131 |
Multilayer optic device and system and method for making same
An optic device, system and method for making are described. The optic device includes a first solid phase layer having a first index of refraction with a first photon transmission property and a...
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7412127 |
Photonic crystal reflectors/filters and displacement sensing applications
We introduce a mechanically tunable photonic crystal structure consisting of coupled photonic crystal slabs. Using both analytic theory, and first-principles finite-difference time-domain...
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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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7409119 |
Optical filter, manufacturing method thereof, and planar lightwave circuit using the same
An optical filter includes a body of a polyhedron structure in which a recess having a predetermined depth from one side surface is exposed on a front surface and a rear surface and a multi-layer...
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7409134 |
Control of output beam divergence in a semiconductor waveguide device
A semiconductor laser device incorporates a beam control layer for reducing far field and beam divergence. Within the beam control layer, a physical property of the semiconductor material varies as...
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7406222 |
Composite evanescent waveguides and associated methods
A composite evanescent waveguide can include a first structured dielectric layer and a second dielectric material oriented adjacent one another to form a wave propagation interface between the...
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7405883 |
Optical component and method of manufacture of optical component
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive...
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7406244 |
Method of using an ultrathin optical element
The present invention provides an ultra-thin high-precision glass optic and method of manufacturing the same. The optic has an axial thickness that is less than 1,000 microns. A pattern and/or...
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7403678 |
Optical switching element
An optical switching element comprising: a multimode waveguide having an electro-optical effect; one or a plurality of first single mode waveguides; a plurality of second single mode waveguides; a...
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7403676 |
Optical waveguide module
An optical waveguide module includes a wiring board, and a light-receiving element and optical waveguide substrate that are positioned on both sides of this wiring board. The wiring board includes...
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7400809 |
Optical waveguide devices and method of making the same
An optical device structure includes a first cladding having a first refractive index, a second cladding having a second refractive index, a core disposed between the first and second claddings,...
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7400791 |
Semiconductor element mounting board and optical transmission module
An optical transmission module of the invention uses a semiconductor chip forming an optical modulator integrated laser on a semi-insulating semiconductor board. An input transfer line and an anode...
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7396676 |
Evanescent wave sensor with attached ligand
The invention in particular embodiments provides an evanescent wave sensor which includes a ligand bound to a sensor substrate via a NCYX linker moiety, as defined herein. Methods of making the...
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7397977 |
Wave transmission medium and waveguide circuit
A wave transmission medium includes an input port 3 - 1 and an output port 3 - 2 . A field distribution 1 and a field distribution 2 are obtained by numerical calculations. The field...
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7397995 |
Multiple-core planar optical waveguides and methods of fabrication and use thereof
A multiple-core planar optical waveguide comprises: a substantially planar waveguide substrate; a lower waveguide core; an upper waveguide core; lower cladding between the substrate and the lower...
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