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8184932 Method of fabricating an optical switch  
A method fabricates an optical switch comprising a microsphere coated with silicon nanocrystals. The method includes providing a silica optical fiber. The method further includes melting at least a...
8139904 Method and apparatus for implementing optical deflection switching using coupled resonators  
A method of implementing optical deflection switching includes directing a tuning operation at a specific region of coupled optical resonators coupled to an input port, a first output port and a...
8098965 Electroabsorption modulator based on fermi level tuning  
A novel electroabsorption modulator based on tuning the Fermi level relative to mid-gap states in a semiconductor. The modulator includes a semiconductor waveguide that has an input port and an...
8078016 Optical circuit device and method  
Techniques are generally disclosed for optical devices that may be used to implement a variety of logic devices or other circuits by optical means. Example optical devices use a photodiode to alter...
7941011 Multilevel light intensity modulator  
In a multilevel light intensity modulator of the invention, input light is branched into n (n is an integer of 2 or more), and respectively sent to n branching waveguides. On the branching...
7922337 Method for establishing a light beam with substantially constant luminous intensity  
The invention relates to a method for establishing a light beam (CLB) with substantially constant luminous intensity comprising the steps of establishing a light beam (LB) by means of a light...
7826688 Enhancing the sensitivity of resonant optical modulating and switching devices  
Embodiments of the inventions described herein comprise a device and method for manipulating an optical beam. The method comprises propagating an optical beam through a waveguide in proximity to a...
7792398 Optically controlled optical-path-switching-type data distribution apparatus and distribution method  
Data to be sent are, in a data communication unit, first divided into electric signal packets by a data transmission/receipt control unit, whereby an electric signal sequence tag is added to each...
7711215 Optical amplitude modulation system capable of cancelling high order component  
It is an object of the present invention to provide a DSB-SC system capable of suppressing a third order component. The DSB-SC modulation having high extinction ratio can be realized by adjusting...
7702188 Polarization beam splitter-polarization rotator structure  
A polarization beam splitter-polarization rotator-polarization beam combiner optical structure comprising a pair of polarization rotators having a polarization beam splitter associated with the...
7697798 Fiber optic pressure sensors and catheters  
A catheter with many fiber optic pressure sensors. The sensor diaphragm is formed from a wafer with a thin silicon layer and a silicon substrate layer separated by a silicon dioxide layer. A method...
7684664 Microresonator optical switch  
An optical switch includes a microresonator comprising a plurality of nanoparticles. The microresonator is configured to receive signal light having a signal wavelength and to receive a pump pulse...
7680361 Optical buffer device  
An optical buffer device includes plural optical memory elements that are capable of holding light and an optical delay element. The plural optical memory elements are arranged on an optical path...
7674391 Manufacturing method of optical semiconductor device  
It is an objective to control the occurrence of the disorder of a far-field pattern and of an optical axial shift. A manufacturing method of a semiconductor laser device has the step for preparing...
7664355 All-optical gates using nonlinear elements-claim set III  
An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The...
7643759 Signal-quality evaluation device, signal adjustment method, optical-signal evaluation system, and optical transmission system  
Provided are a signal-quality evaluation device and a signal adjustment method which require shorter evaluation time and which have high flexibility of application. A signal quality evaluation...
7643707 Lighting apparatus  
Provided is a lighting apparatus capable of uniformly and efficiently lighting a spatial light modulator. The lighting apparatus includes: a light source for outputting laser light; a multimode...
7639910 Optical module and method of packaging the same  
An optical module is configured with a combination of a single-mode oscillating light source and an optical filter. In this optical module, the single-mode oscillating light source outputs a...
7628547 Optical module and optical communications device  
An optical module includes: a light source; a variable transmissivity member that is disposed on a light path of light emitted from the light source with a spacing from the light source, the...
7630417 Crystal whispering gallery mode optical resonators  
Whispering-gallery-mode (WGM) optical resonators made of crystal materials to achieve high quality factors at or above 1010.
7625136 Optical module and optical communication device  
An optical module includes a light source, a variable transmittance member disposed on a light path of output light from the light source distant from the light source, and a coupling section for...
7603003 Nanocomposites  
This invention provides composite materials comprising nanostructures (e.g., nanowires, branched nanowires, nanotetrapods, nanocrystals, and nanoparticles). Methods and compositions for making such...
7587103 Method for ultrafast optical deflection enabling optical recording via serrated or graded light illumination  
In one general embodiment, a method for deflecting an optical signal input into a waveguide is provided. In operation, an optical input signal is propagated through a waveguide. Additionally, an...
7570184 Optical analog/digital conversion method and apparatus thereof  
A high speed optical analog/digital conversion process with a simple configuration, in which an optical-pulse branching delay multiplexer generates as many duplicates of each optical pulse as the...
7542631 Optical transmission system  
An optical transmission system which provides bandwidth restricted optical signal comprises an input terminal (10) for accepting an electrical binary signal, an amplifier (12) for amplifying said...
7529454 Photonic crystal surface states  
A photonic crystal may be configured to support a surface state for logic.
7515779 Optical semiconductor device  
An optical semiconductor device has a heater, an optical waveguide layer, a first electrode and a second electrode. The heater is provided on a first semiconductor region and has more than one...
7457488 Light transmission with temperature sensitive materials  
One embodiment includes a connector for an optical pathway. The connector includes a body formed, at least in part, with a temperature sensitive material having one or more light transmission...
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...
7437083 Wavelength converter  
A wavelength converter for binary optical signals includes an interferometer structure (110) for generating an output signal by modulating a received local signal (LS) according to the modulation...
7423564 Optical signal processing device for A/D converter including optical encoders with nonlinear loop mirrors  
An optically sampling device optically samples an optical analog signal using a sampled signal having a predetermined sampling frequency, and outputs control light having a pulse train of an...
7409115 Method and apparatus for spectrum deconvultion and reshaping  
A method and apparatus for filter spectrum deconvolution and reshaping include providing a filter output of a spectrum signal and determining the intensity and wavelength of the spectrum signal at...
7403671 Photonic-crystal electromagnetic-wave device including electromagnetic-wave absorptive portion and method for producing the same  
A photonic-crystal electromagnetic-wave device includes a photonic crystal structure having a periodically changed optical property at least in one direction. The photonic crystal structure...
7397975 Optical switch  
Reflection means such as a mirror are provided on the output end of an optical fiber, and the input signal light and control light are returned to the optical fiber. Although the zero-dispersion...
7394951 Optical signal level control apparatus  
In an optical signal level control apparatus used in a WDM system, the amount of circuitry per wavelength is reduced. Optical power level is detected on the output side of a variable optical...
7388703 Optical transmission device and optical phase modulator  
An optical transmission device includes an optical phase modulator and a signal generation function. The optical phase modulator is controlled, so that when the state of an intensity-modulated...
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...
7379677 Method of wavelength conversion and wavelength converter  
The wavelength converter comprises (1) an optical multiplexer for multiplexing an amplitude-modulated first light and reference light, which is continuous light having a wavelength different from...
7376354 All optical clock recovery  
All optical clock recovery includes a transmitter for generating an optical timing signal. The transmitter includes a semiconductor laser for the production of a dynamically synchronizable timing...
7369779 Regeneration of optical phase modulated signals  
A regenerator for restoring the originally encoded optical phase of a differential-phase-shift-keyed signal. In an embodiment, the regenerator simultaneously provides limiting amplification and...
7340118 Fuel injectors with integral fiber optic pressure sensors and associated compensation and status monitoring devices  
Fuel injectors (10) for internal combustion engines are modified and equipped with fiber optic fuel pressure sensors (12) and fiber optic combustion pressure sensors (14). The combustion pressure...
7327909 Method for tuning a fiber optic component  
A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially...
7313291 Optical modulator  
The invention relates to an optically pumped multilayered modulator having surface-normal geometry. The multilayer structure comprises an absorber section through which an optical signal (401) to...
7310454 Photonic bandgap modulator, amplifier, demux, and TDM devices  
An optical device includes at least two photonic bandgap crystal (PBG) stacks that are each comprised of alternating layers of high and low index materials. A defect region is formed in a cavity...
7295373 Power polarization beam combiner and its applications in fiber communication  
This specification discloses a power polarization beam combiner and its applications in fiber communications. The power polarization beam combiner uses the photonic band gap formed in a photonic...
7283704 Optical signal-electric signal converter  
An optical signal to electrical signal converter of the present invention comprises an optical waveguide propagating a modulated optical signal therethrough; a pair of electrodes disposed at...
7218829 Optical transmission module  
An optical transmission module and method are capable of suppressing the occurrence of multiplexed reflection light, thereby making it possible to easily carry out an optical coupling operation at...
7203396 All optical chopping using logic gates apparatus and method  
An all optical chopping device for shaping and reshaping comprising an all optical AND logic gate having a first input for receiving a first optical signal, a second input for receiving a second...
7184614 Method and apparatus for improving safety during exposure to a monochromatic light source  
A method and apparatus are disclosed for improving bodily safety during exposure to an eye hazardous monochromatic treatment light source by diverging the light, such as with a diffusing unit...
7171064 Thermo-optic switch having fast rise-time  
A thermo-optic switch is operated in a novel near-impulse mode in which the drive pulse width is shorter than twice the diffusion time of the switch. The drive pulse width is less than the rise...
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