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Tuna-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Wavelength tunable laser module and method of controlling wavelength thereof
Furukawa Electric Co., Ltd.
August 17, 2017 - N°20170237499

A method of controlling a wavelength of a wavelength tunable laser module includes: referring to data of measured frequencies and wavelength filter control values at two or more points for each basic frequency channel, the data being stored in a memory of a controller; selecting the basic frequency channel closest to a frequency of laser light that a laser light ...
Subchannel photonic routing, switching and protection with simplified upgrades of wdm optical networks
Treq Labs, Inc.
August 17, 2017 - N°20170237483

The present invention includes novel techniques, apparatus, and systems for optical wdm communications. Tunable lasers are employed to generate respective subcarrier frequencies which represent subchannels of an itu channel to which client signals can be mapped. In one embodiment, subchannels are polarization interleaved to reduce crosstalk. In another embodiment, polarization multiplexing is used to increase the spectral density. Client circuits ...
Weakly coupled tunable rf receiver architecture
Qorvo Us, Inc.
August 17, 2017 - N°20170237404

Rf communications circuitry, which includes a first tunable rf filter and a first rf low noise amplifier (lna) is disclosed. The first tunable rf filter includes a pair of weakly coupled resonators, and receives and filters a first upstream rf signal to provide a first filtered rf signal. The first rf lna is coupled to the first tunable rf filter, ...
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Tunable mode locked laser
Genia Photonics Inc.
August 17, 2017 - N°20170237222

A laser for emitting simultaneously a first and second laser lights having respectively first and second wavelength differing from each other. The laser comprises: an optical resonator defining a first optical path and a second optical path, the first laser light travelling along the first optical path and the second laser light travelling along the second optical path; a modulated ...
Rod-switched tunable filter
Huawei Technologies Canada Co., Ltd.
August 17, 2017 - N°20170237142

A rod-switched tunable resonator includes a housing defining a cavity, a first rod disposed within the cavity, a second rod disposed within the cavity, and a switch connected to the first rod and to the second rod to tune the resonator to one of a plurality of frequencies by connecting or disconnecting one or both of the first and second ...
Four-mode defected ground structure resonator
Qingdao Haier Electronics Co., Ltd.
August 17, 2017 - N°20170237138

The present invention discloses a four-mode defected ground structure resonator, comprising a metal dielectric substrate and a defected ground unit which is etched in one surface of the metal dielectric substrate; the shape of the defected ground unit is axially symmetric about a first central axis of the defected ground unit, and also the shape of the defected ground unit ...
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Wavelength tunable mems-fabry perot filter
Inphenix, Inc.
August 17, 2017 - N°20170235124

A wavelength tunable gain medium with the use of micro-electromechanical system (mems) based fabry-perot (fp) filter cavity tuning is provided as a tunable laser. The system comprises a laser cavity and a filter cavity for wavelength selection. The laser cavity consists of a gain medium such as a semiconductor optical amplifier (soa), two collimating lenses and an end reflector. The ...
Elastic biopolymer and use as a tissue adhesive
The Brigham And Women's Hospital, Inc.
August 17, 2017 - N°20170232138

The present invention provides an improved tissue adhesive to repair defects in soft tissue. Following astm standard tests, crosslinked methacryloyl-substituted gelatin hydrogels of the present invention (gelseal) were shown to exhibit adhesive properties, i. E. Wound closure strength, shear resistance and burst pressure, that were superior to clinically used fibrin- and poly(ethylene glycol)-based glues. Chronic in vivo experiments ...
Methods and apparatus for true high dynamic range (thdr) time-delay-and-integrate (tdi) imaging
The Brigham And Women's Hospital, Inc.
August 10, 2017 - N°20170230596

In time-delay-and-integrate (tdi) imaging, a charge-couple device (ccd) integrates and transfers charge across its columns. Unfortunately, the limited well depth of the ccd limits the dynamic range of the resulting image. Fortunately, tdi imaging can be implemented with a digital focal plane array (dfpa) that includes a detector, analog-to-digital converter (adc), and counter in each pixel and transfer circuitry connected ...
Methods for creating and receiving multi-carrier signals. codification, communication and detection apparatus. tunable noise-correction method ...
The Brigham And Women's Hospital, Inc.
August 10, 2017 - N°20170230207

A spectrally efficient multi-carrier communication apparatus with advanced features of carrier management. The apparatus is flexible to changes in the form of the sub-carrier and their location in frequency. This invention can use non-standard pulses at arbitrary frequencies providing a greater control of the carrier. The additional features can be used for spectral efficiency, to correct signal distortion or for ...
Tunable ampere phase plate for charged particle imaging systems
Forschungszentrum JÜlich Gmbh
August 10, 2017 - N°20170229283

A phase shifting device for a charged particle imaging system includes means for passing an electric current in a direction that has a nonzero component parallel to at least one section of the imaging beam. Preferably, the electric current is passed parallel along the section of the imaging beam. The amount of phase shift then centrosymmetrically depends on the distance ...
Tunable dc voltage generating circuit
Richtek Technology Corporation
August 10, 2017 - N°20170227974

A tunable dc voltage generating circuit includes: a resonance circuit including an inductor and an input capacitor connected in series configuration, and arranged to operably receive an input signal and generating a resonance signal at an output node between the inductor and the input capacitor; a rectifying circuit coupled with the output node and arranged to operably rectify the resonance ...
Actively tunable polar-dielectric optical devices
The Government Of The United States Of America, As Represented By The Secretary Of The Navy
August 10, 2017 - N°20170227797

Optical devices that include one or more structures fabricated from polar-dielectric materials that exhibit surface phonon polaritons (sphps), where the sphps alter the optical properties of the structure. The optical properties lent to these structures by the sphps are altered by introducing charge carriers directly into the structures. The carriers can be introduced into these structures, and the carrier concentration ...
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Energy release using tunable reactive materials
International Business Machines Corporation
August 10, 2017 - N°20170226633

A reactive material stack with tunable ignition temperatures is provided by inserting a barrier layer between layers of reactive materials. The barrier layer prevents the interdiffusion of the reactive materials, thus a reaction between reactive materials only occurs at an elevated ignition temperature when a certain energy threshold is reached.
Tunable surfactants in dampening fluids for digital offset ink printing applications
Palo Alto Research Center Incorporated
August 10, 2017 - N°20170225452

A dampening fluid useful in offset ink printing applications contains water and a surfactant whose structure can be altered. The alteration in structure aids in reducing accumulation of the surfactant on the surface of an imaging member. The surfactant can be decomposed, switched between cis-trans states, or polymerizable with ink that is subsequently placed on the surface.
Neural interface system
Medtronic Bakken Research Center B.v.
August 10, 2017 - N°20170224981

The neural interface system of the preferred embodiments includes an electrode array having a plurality of electrode sites and a carrier that supports the electrode array. The electrode array is coupled to the carrier such that the electrode sites are arranged both circumferentially around the carrier and axially along the carrier. A group of the electrode sites may be simultaneously ...
Robotically augmented catheter manipulation handle
White Bear Medical Llc
August 10, 2017 - N°20170224955

Apparatus and associated methods relate to a catheter manipulation handle with user interface controls for steering a catheter in situ while providing an augmented (e. G., motorized, powered and tunable precision steering, and perforation safeguards) control and feedback user experience. In an illustrative example, the catheter manipulation handle may provide motor assisted operation to automatically rotate and/or deflect a ...
Optical coherence tomography for performing measurements on the retina
Carl Zeiss Meditec Ag
August 10, 2017 - N°20170224208

An optical coherence tomograph includes a wavelength tunable illuminating device, an illumination and measurement beam path with a dividing element and a scanner and a front optical unit and a reference beam path, a detection beam path and a flat panel detector. A beam splitter conducts the separated measurement radiation to the detection beam path and an optical element acts ...
Systems for providing tunable white light with high color rendering
Ecosense Lighting Inc
August 03, 2017 - N°20170223799

The present disclosure provides systems for generating tunable white light. The systems include a plurality of led strings that generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each led string being driven with a separately controllable drive current in order to tune the generated light output.
Systems for providing tunable white light with high color rendering
Ecosense Lighting Inc
August 03, 2017 - N°20170223786

The present disclosure provides systems for generating tunable white light. The systems include a plurality of led strings that generate light with color points that fall within blue, yellow/green, red, and cyan color ranges, with each led string being driven with a separately controllable drive current in order to tune the generated light output.
Analog equalizer
Mstar Semiconductor, Inc.
August 03, 2017 - N°20170222848

A analog equalizer includes: an adjusting circuit, generating an adjustment signal and a selection signal; a cascaded equalization circuit, receiving the adjustment signal, and adjusting at least one of a tunable resistor, a tunable capacitor and a tunable current source in the multi-stage equalization circuit according to the adjustment signal to perform an equalization process on a signal to be ...
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