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| Number | Title | Issue Date |
| 8175422 | Optical modulator In an optical modulator, a first electrode portion having a plurality of first electrodes is provided on the upper surface of a base part having a periodically-poled structure and a second electrode portion is provided on the lower surface thereof, and voltage is ap... | 05/08/2012 |
| 7831113 | Optical pulse position modulator with chirp compensation An optical pulse position modulator includes a substrate with parallel first and second sides, the substrate including a first waveguide channel and a parallel second waveguide channel orthogonal to the first and second sides, a linear chirped grating orthogonal to ... | 11/09/2010 |
| 7764851 | Optical modulators An optical modulator has an optical waveguide substrate having a pair of principal surfaces, a pair of side surfaces an incident face and exit face of light, the substrate being composed of a ferroelectric material; a channel optical waveguide having at least a pair... | 07/27/2010 |
| 7689070 | High frequency electrical signal control device and sensing system A high frequency electrical signal control device comprises a transmitter for generating a high frequency electrical signal, a receiver, a transmission line for propagating the electrical signal, and a structure for radiating the electrical signal propagated through... | 03/30/2010 |
| 7689069 | Semiconductor optical switch A semiconductor optical switch may include an optical waveguide, a first electrode, and a first reflector. The optical waveguide may include a branching point, a first incoming path and first and second outgoing paths. The first electrode is provided at the branchin... | 03/30/2010 |
| 7664345 | MEMS device fabricated on a pre-patterned substrate A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated from an orthogonal upper electrode by a cavity. The upper electrode is configured to be mov... | 02/16/2010 |
| 7660493 | Optical modulator An optical modulator is provided. The optical modulator includes a thin plate made of an electrooptic material and having a thickness of 20 μm or less, an optical waveguide formed on a top or bottom surface of the thin plate, and a modulation electrode formed on th... | 02/09/2010 |
| 7630588 | High frequency electrical signal control device and sensing system A high frequency electrical signal control device comprises a transmitter for generating a high frequency electrical signal, a receiver, a transmission line for propagating the electrical signal, and a structure for radiating the electrical signal propagated through... | 12/08/2009 |
| 7587104 | MEMS device fabricated on a pre-patterned substrate A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated by an orthogonal upper electrode by a cavity. The upper electrode is configured to be movab... | 09/08/2009 |
| 7580596 | Non-volatile programmable optical element with absorption coefficient modulation A non-volatile programmable electro-optical element alters absorption characteristics of an optical medium that comprises a transition metal oxide material by electrostatically moving oxygen vacancies into or out of the regions containing a wavefunction of an optica... | 08/25/2009 |
| 7561761 | Photonic systems and methods for encoding data in carrier electromagnetic waves Various embodiments of the present invention are related to photonic systems and methods that can be used to encode data in carrier electromagnetic waves. In one embodiment of the present invention, a photonic system comprises a first waveguide configured to transmi... | 07/14/2009 |
| 7529433 | Humidity tolerant electro-optic device The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with... | 05/05/2009 |
| 7522784 | Asymmetric directional coupler having a reduced drive voltage The invention relates to an electro-optic directional coupler suitable for use as a variable optical attenuator at reduced voltages compared to those known in the prior art. The present invention has found that by careful selection of an asymmetric directional coupl... | 04/21/2009 |
| 7460739 | Lithium niobate optical modulator An optical modulator comprises a Z-cut lithium niobate substrate (21) on which is formed a Mach-Zehnder interferometer having two generally parallel waveguides (23, 25) lying beneath a buffer layer of dielectric material (27). First and second g... | 12/02/2008 |
| 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 fabricated. And a total amount of the power supplied to the first and the ... | 10/21/2008 |
| 7440642 | Integrated optical modulator and method for manufacturing the same An integrated optical modulator and method for manufacturing thereof are disclosed. The integrated optical modulator comprises a carrier wave band modulator using a double sideband modulation method and an intermediate frequency band modulator using a single sideban... | 10/21/2008 |
| 7437026 | Three dimensional semiconductor based optical switching device A device with optical switching between multiple layers of a semiconductor die is disclosed. In one aspect of the present invention, the disclosed apparatus includes a first semiconductor material layer of a semiconductor die. The first semiconductor material layer ... | 10/14/2008 |
| 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 plane wave expansion (“PWM) method. The switch may be implemented in... | 09/23/2008 |
| 7426326 | Low loss bridge electrode with rounded corners for electro-optic modulators An electro-optic modulator having a substrate, one or more optical waveguides, at least one active electrode formed on the substrate and aligned over the optical waveguide, the active electrode operating to induce a refractive index change in the optical waveguide. ... | 09/16/2008 |
| 7421158 | Holographically defined surface mask etching method and etched optical structures The invention is directed to a method for etching a solid state material to create a surface relief pattern. A resist layer is formed on the surface of the solid state material. The photoresist layer is holographically patterned to form a patterned mask. The pattern... | 09/02/2008 |
| 7415172 | Diffractive waveguide-spatial optical modulator Disclosed herein is a diffractive waveguide-spatial optical modulator. The diffractive waveguide-spatial optical modulator includes a substrate member, a plurality of reflecting members, and an actuation means. The reflecting members are each formed in a plate shape... | 08/19/2008 |
| 7415186 | Methods for visually inspecting interferometric modulators for defects A method is provided for visual inspection of an array of interferometric modulators in various driven states. This method may include driving multiple columns or rows of interferometric modulators via a single test pad or test lead, and then observing the array for... | 08/19/2008 |
| 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 connected to the upper cladding region and a second electrode is connected... | 08/12/2008 |
| 7409114 | Optical modulator An optical modulator using a thin plate including a portion having 20 μm or less thickness, capable of selecting a specific polarized wave from a light wave which propagates in an optical waveguide in the modulator without reduced productivity. The modulator includ... | 08/05/2008 |
| 7409116 | RF to optical converter for RF imaging with optical sensors A radio frequency (RF) to optical converter for RF imaging, wherein the converter comprises an array of RF antenna pixels adapted to receive RF signals, wherein the RF antenna pixels are adapted to facilitate RF resonance of the received RF signals; a photonic band ... | 08/05/2008 |
| 7409113 | Semiconductor electro-absorption optical modulator, semiconductor electro-absorption optical modulator integrated laser, optical transmitter module and optical module This invention provides an optical transmitter module and an optical module using an EA modulator capable of realizing stable ACER regardless of operating temperature without using a control mechanism for maintaining temperature of the EA modulator constant. In the ... | 08/05/2008 |
| 7406226 | Circular grating resonator structure with integrated electro-optical modulation An optical structure includes a substrate, a circular grating resonator (CGR) formed on the substrate, the CGR including a center disc and a plurality of concentric rings spaced from one another; an input planar waveguide and an output planar waveguide each formed o... | 07/29/2008 |
| 7406220 | Beam steering and combination Systems and methods for steering at least one of two or more optical input beams and forming a combined optical output beam are disclosed. A system has a waveguide, one or more phase controlling devices and one or more beam steering devices. The waveguide is configu... | 07/29/2008 |
| 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 first electrode arranged in the vicinity of one edge on one side of t... | 07/22/2008 |
| 7403672 | Integrated linear polarizer A method for creating an integrated linear polarizer is provided. An electro-optical component is fabricated and may include a bottom electrode, a bottom cladding layer, side cladding features, an electro-optic polymer layer, a top cladding layer, and a top electrod... | 07/22/2008 |
| 7400788 | Linearized optical modulator having a plurality of coupling functions Invention discloses an apparatus that provides linear optical modulation of light carrier signals by an electrical modulation signal. Linearized modulation is achieved through the selection of a spacing profile between two optical transmission waveguides. The spacin... | 07/15/2008 |
| 7400786 | Optical modulator and optical transmitter In an optical modulator of the invention, a signal electrode and a ground electrode are formed along a pair of branching waveguides of a Mach-Zehnder type optical waveguide, and a first region positioned on an input side of an interaction section of light and an ele... | 07/15/2008 |
| 7394950 | Optical modulator An optical modulator of the Mach-Zehnder type including electrodes disposed above a substrate having a pair of linear portions of an optical waveguide includes a signal electrode to which modulating signals are applied; first and second earth electrodes; and a bias ... | 07/01/2008 |
| 7386196 | Method for controlling an optoelectronic component A method for controlling an optoelectronic component that includes two waveguides. The refractive index of the first waveguide is changed periodically with a first control signal, the amplitude of which is changed between a first amplitude level and higher second am... | 06/10/2008 |
| 7382942 | Optical waveguide devices It is provided an optical waveguide device in which the radius of curvature of a curved part of an optical waveguide can be lowered and the radiation loss of light in the curved part can be reduced. An optical waveguide device 2 has a ferroelectric optical wa... | 06/03/2008 |
| 7379629 | Optically coupled resonant pressure sensor An optically coupled resonant pressure sensor includes a deformable diaphragm and an optically coupled resonator fixedly attached to the deformable diaphragm. The resonator includes a resonator body and a laterally offset photodiode adjacent to the resonator body. T... | 05/27/2008 |
| 7379640 | Tunable dispersion compensator and method of manufacturing the same A tunable dispersion compensator in which a heater portion can be easily constructed to reduce cost. A tunable dispersion compensator includes: an optical fiber having a grating portion; a heating unit for heating the grating portion to apply a temperature distribut... | 05/27/2008 |
| 7379672 | Photonic RF distribution system The present photonic RF generation and distribution system provides a system and method for distributing an RF output signal. The photonic RF distribution system includes two optical sources for generating optical signals. A first optical source (42) is opera... | 05/27/2008 |
| 7373047 | Embedded electrode integrated optical devices and methods of fabrication Waveguide devices and schemes for fabricating waveguide devices useful in applications requiring modulation, attenuation, polarization control, and switching of optical signals are provided. In accordance with one embodiment of the present invention, a method of fab... | 05/13/2008 |
| 7373026 | MEMS device fabricated on a pre-patterned substrate A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated by an orthogonal upper electrode by a cavity. The upper electrode is configured to be movab... | 05/13/2008 |
