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7236656 |
Optical transport network
An optical transport network comprises a monolithic transmitter photonic integrated circuit (TxPIC) InP-based chip and a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip.
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7236667 |
Techniques for use of nanocavities to enhance quantum processing with photons and the Zeno effect
Techniques are provided for placing atoms inside an appropriate nanocavity for enhancing two-photon absorption and quantum information processing based on the Zeno effect. Techniques for...
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7233720 |
Devices based on optical waveguides with adjustable Bragg gratings
A system for filtering light propagating in a waveguide is described. The system utilizes an adjustable periodic grating which induces mode coupling of predetermined frequencies of light...
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7233724 |
Long period bragg grating optical signal attenuation
An apparatus in one example comprises one or more light sources, one or more long period Bragg gratings that are optically coupled with the one or more light sources, and one or more amplification...
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7233443 |
Arrangement for WDM multiplexing and demultiplexing
An arrangement for dispersing light comprises a blazed diffraction grating and a mirror. The blazed diffraction grating comprises a grating plane and a multiplicity of blazed facets. Each blazed...
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7230761 |
High-dispersion grisms
A grism based upon a grating with a given line frequency is configured such that a design wavelength will undergo either a specific total bend angle, a zero-degree total bend without lateral...
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7231105 |
Integrated dual waveguides
An apparatus and method for splitting a received optical signal into its orthogonal polarizations and sending the two polarizations on separate dual integrated waveguides to other systems on chip...
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7231110 |
Wavelength selector switch
A wavelength selector switch includes first and second refracting plates, an optical splitter, first and second optical systems, an optical coupler polarization controller, and second refracting...
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7231149 |
Bidirectional optical add-drop multiplexer
A bidirectional optical add-drop multiplexer adds and drops optical signals having specific wavelengths among the WDM optical signals transmitted bidirectionally through one of the optical...
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7231118 |
Multichannel array waveguide diffraction grating multiplexer/demultiplexer and method of connecting array waveguide and output waveguide
An array waveguide diffraction grating optical multiplexer/demultiplexer having an input waveguide, an input side slab waveguide, an output side slab waveguide, an output waveguide, an array...
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7231117 |
Apparatus for stabilizing laser wavelength
A technique to stabilize the effective refraction index of a laser generating system's wave guide, as well as a technique to stabilize the phase of the wave guide. In at least one embodiment of the...
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7227675 |
Hologram recording medium, recording/reproducing apparatus and method therefor
A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when...
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7228043 |
Optical waveguide circuit and manufacturing method thereof
An optical waveguide circuit comprising a plurality of first cores ( 203 ) arranged at intervals widening as they are away from the branch point or the joining point of optical signal, a clad ( 205...
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7228034 |
Interference patterning
Interference patterning of substrates. An interference pattern including an interference fringe may be generated to illuminate a substrate, the area on the substrate actually illuminated by the...
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7228017 |
Fiber optic sensing device and method of making and operating the same
A chemical sensing device comprises a fiber core and a fiber cladding. The fiber core comprises an index-modulated grating region having an apodized profile configured for increasing shedding of...
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7224866 |
Apparatus and method for forming an optical microresonator
An apparatus and method forms an optical microresonator and includes spaced high precision ferrules through which an optical fiber passes. A ferrule can be rotatable and movable longitudinally in...
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7224882 |
Optical materials with selected index-of-refraction
Photosensitive optical materials are used for establishing more versatile approaches for optical device formation. In some embodiments, unpatterned light is used to shift the index-of-refraction of...
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7224867 |
Holographic spectral filter
Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and...
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7224868 |
Radiation-free optical cavity
The present invention provides a micro-resonator including a plurality of waveguides forming optic junctions therebetween, with adjacent waveguides having different core permittivities and...
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7224858 |
Optical transmission network with a receiver photonic integrated circuit (RxPIC) utilizing an optical service chanel (OSC)
An optical receiver photonic integrated circuit (RxFIC) comprises a semiconductor monolithic chip having an input to receive from an optical transmissior link a combined channel signal originating...
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7224855 |
Optical multiplexing device
An optical multiplexing device includes an optical element having at least one set of diffractive elements, and an optical reflector. The reflector routes, between first and second optical ports,...
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7221821 |
Hitless errorless trimmable dynamic optical add/drop multiplexer devices
The present invention is generally directed to integrated optical add/drop multiplexer devices in which light of a specific wavelength (or specific wavelengths) can be added to or dropped from a...
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7221823 |
Fiber coupler, system and associated methods for reducing back reflections
An apparatus which couples light to a fiber from a light source at an input plane while reducing back reflections includes returning light reflected back through such that the returning light does...
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7221845 |
Planar optical waveguide
A method for creating a master and for generating an optical waveguide therefrom. The method includes creating a waveguide master having the geometrical form of at least one optical element formed...
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7221825 |
Optical coupler
An optical coupler comprises an input waveguide, an intermediate waveguide, an output waveguide, a first grating situated between the input and intermediate waveguides, and a second grating...
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7218817 |
Nonlinear optical guided mode resonance filter
Nonlinear optical filters and associated methods. In a representative embodiment, a nonlinear optical filter includes a grating and a dye-doped polymer layer coupled to the grating. The dye-doped...
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7218816 |
Optical fiber grating part
An optical fiber grating part including an elongated pedestal, and a base plate installed on said pedestal, and having a different coefficient of linear thermal expansion from said pedestal, and an...
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7218802 |
Low drift planar waveguide grating sensor and method for manufacturing same
A planar waveguide grating (PWG) sensor is described herein which exhibits a low signal drift and an enhanced sensitivity due to the use of a fully dense silicon-rich nitride surface layer. In the...
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7218800 |
Compensator for polarization-mode dispersion compensation
A compensator for compensating polarisation-mode dispersion, comprises a splitter ( 30 ) arranged to split light, according to the light's polarisation, between a first optical path and a second...
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7218814 |
Method and apparatus for optical mode conversion
A mode conversion apparatus including a dynamic waveguide section associated with a plurality of control elements that, when activated, are able to produce a periodic refractive-index perturbation...
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7218815 |
Athermal arrayed waveguide grating
An athermal arrayed-waveguide grating is disclosed and includes an input waveguide for inputting two or more optical signals from one exterior side, a grating array for separating the optical...
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7215884 |
Optical demultiplexer having bragg diffration grating and optical communication module using the optical demultiplexer
An optical demultiplexer having at least one Bragg diffraction grating for minimizing crosstalk on the sides of transmitting and receiving optical signals, as well as an optical communication...
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7215850 |
Waveguide plate and process for its production and microtitre plate
A waveguide plate and a process for making the waveguide plate with a plate-like glass substrate ( 1 ), carrying a waveguiding layer ( 2 ), with at least one coupling grating on the surface...
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7212709 |
Optical waveguide device and optical waveguide module
An object of the present invention is to provide an optical waveguide device and an optical waveguide module having the function to multiplex/demultiplex or couple/decouple optical signals and...
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7212693 |
Optical substance analyzer
A portable waveguide sensor having one or more gratings. In one embodiment, the sensor has a waveguide, wherein a plurality of grooves imprinted onto the waveguide form a Bragg grating. The surface...
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7212553 |
Wavelength stabilized diode-laser array
A fiber laser including doped-core fiber having inner and outer cladding is optically pumped by plurality of diode-lasers. Light emitted by the diode-lasers is coupled into a single multimode...
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7212739 |
Protection switching arrangement for an optical switching system
A protection arrangement for an optical switching system includes protection switching for switch planes in the optical core and for ports in the tributary cards. For a multiple layer switch core...
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7212712 |
Coupler-multiplexer permutation switch
A coupler-multiplexer permutation switch (CMPS) integrates multiplexng and switching functions on a single substrate. It has a single-mode/multi-mode backward coupler followed by a digital optical...
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7212707 |
Temperature-compensated fiber grating packaging arrangement
A passive temperature-compensated optical grating arrangement includes a housing of low CTE material, with the optical grating stretched across the housing between a first, fixed sidewall and a...
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7212708 |
Optical grating based multiplexer device with power tap capability
In an optical grating device, a grating arrangement receives different wavelength output signals from a plurality of radiation sources at input ports thereof, and generates therefrom a multiplexed...
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7209611 |
Transmitter photonic integrated circuit (TxPIC) chips utilizing compact wavelength selective combiners/decombiners
A monolithic transmitter photonic integrated circuit (TxPIC) chip and a monolithic receiver photonic integrated circuit (RxPIC) chip include a plurality of optical signal channels together with...
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7209212 |
Tunable optical integrated element using liquid crystal as active layer
The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present...
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7209612 |
Two-stage optical bi-directional transceiver
The invention relates to a planar lightwave circuit including a two stage optical filter for use in a bi-directional transceiver. A first stage includes a non-dispersive optical filter, which...
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7206472 |
Optical backplanes with integrated optical couplers and methods of making the same
Optical backplanes providing integrated optical couplers to external optical fibers are disclosed, along with methods for making the same. An exemplary optical backplane has a first cladding layer...
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7206478 |
Apparatus and method for monitoring optical network
An apparatus for monitoring fiber-fault in an optical networks, such as a passive optical networks, suitable for monitoring at least one fiber path in connection. The apparatus includes at least...
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7206509 |
Method and apparatus for temporally shifting one or more packets using wavelength selective delays
A method and apparatus are disclosed for temporally shifting one or more packets using wavelength selective delays. The header information associated with each packet, together with a routing...
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7203400 |
Dispersion compensating waveguide circuit
A dispersion compensator having relatively uniform transmission characteristics over the bandwidth of a communication channel. The compensator is designed to process an optical signal corresponding...
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7203386 |
Self-referencing waveguide grating sensors
Self-referencing optical sensors and methods are described herein that can be used to detect bio-chemical interactions (e.g., biological binding of antigen-antibody pairs) that occur in for example...
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7203422 |
Optical network unit, wavelength splitter, and optical wavelength-division multiplexing access system
In an optical wavelength division multiplexed access system, a center unit (OSU) and n optical network units (ONUs) are connected together via a wavelength splitter and optical fiber transmission...
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7203401 |
Multiple wavelength optical source
A planar optical waveguide is formed having sets of locking diffractive elements and means for routing optical signals. Lasers are positioned to launch signals into the planar waveguide that are...
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