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7376308 |
Optical off-chip interconnects in multichannel planar waveguide devices
The multichannel waveguide device includes an array of waveguides located in a plane. Each waveguide channel has a redirecting element for redirecting a guided wave out of said plane, or vice...
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7376311 |
Method and apparatus for wavelength-selective switches and modulators
An apparatus and method are provided for manipulating light beams propagated through an optical apparatus that includes a planar lightwave circuit (PLC) and free-space optics unit. A multi-wave...
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7376305 |
Echelle gratings with low Polarization Dependent Loss (PDL) using metal coating on the reflecting facets only
An Echelle grating has alternate first ( 1 a ) and second ( 1 b ) sets of facets ( 1 ). The first set of facets ( 1 a ) is operative to reflect incident light ( 4 ) for diffraction and the second...
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7376309 |
Optical structure
An optical structure comprising an optical resonator is provided. The optical resonator comprises a first set of nested closed optical regions, forming a distributed feedback resonator structure...
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7375890 |
Method of manufacturing of a diffraction grating-based optical identification element
A method of manufacturing optical identification elements that includes forming a diffraction grating in a fiber substrate along a longitudinal axis of the substrate. The grating includes a...
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7376306 |
Slanted Bragg grating gain flattening filter having spatially overlapping elementary filters and a manufacturing method therefor
An optical filter comprises a waveguide and a plurality of Slanted Bragg Gratings written in the waveguide, wherein at least two of the Slanted Bragg Gratings overlap one another. A method of...
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7376294 |
Optoelectronic component with an adjustable optical property and method for producing the layer structure
The invention relates to an optoelectronic component and a method for producing it, in particular a waveguide structure, featuring at least one irradiation-sensitive structure in a layer structure...
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7376298 |
Optical rotating data transmission device with an unobstructed diameter
A device for transmitting modulated optical signals between a first unit and a second unit, in which the first unit is supported to be rotatable relative to the second unit, comprises a light guide...
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7373039 |
Low-ripple optical device
A low-ripple optical device comprising an optical demultiplexer structure and an optical multiplexer structure cascaded together wherein one of the structures exhibits n passband maxima and the...
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7373045 |
Method and apparatus for processing optical signals with supergratings
An optical component including at least one optical supergrating is provided. The optical supergrating includes a quantized refractive index profile adapted to exhibit a finite plurality of...
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7373046 |
Optical add/drop multiplexers
A spectrally selective optical coupler is disclosed, comprising a first and a second waveguide; an external resonator defined by at least a first and a second mirror; and a respective deflecting...
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7369777 |
Method and apparatus for automatically adjusting the optical power directed to a dispersion compensating element
A dispersion compensator is provided that includes an input port 102 for receiving a WDM optical signal and a dispersion compensating element 110 coupled to the input port for substantially...
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7369769 |
Ethernet passive optical network ring and its method of authorization and collision detection
An Ethernet passive optical network (EPON) ring for providing protection against fiber failures. The optical network unit (ONU) is coupled to the ring fiber by a three-port passive optical...
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7366366 |
FBG sensing system
To provide a low-cost FBG sensing device having a high reliability, suitable for high-speed measurement such as vibration measurement, able to perform a remote measurement, and simple data...
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RE40271 |
Echelle grating dense wavelength division multiplexer/demultiplexer
An apparatus for use in optical communication systems to multiplex/demultiplex an optical signal consisting of an optical channel(s) of distinct wavelength(s) having a select channel spacing within...
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7366413 |
Modular cross connect system with 3D-MEMS for optical telecommunication networks
A modular cross connect system for optical telecommunication networks has the optical unit divided in at least two main bodies with one section for connection comprising the collimators and a main...
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7366417 |
Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch
A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM...
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7366377 |
Particle concentration method
A method for concentrating particles, including: placing the particles close to and/or on at least one waveguide of a support, and injecting light radiation into the waveguide causing grouping of...
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7366416 |
Hub for a passive optical network hub
A hub for use in a passive optical network (PON) includes a transmission fiber on which an information-bearing optical signal is received, a double-cladded, rare-earth doped fiber located along the...
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7362939 |
Optical fiber for long period grating, long period grating component and manufacturing method of the same
This invention relates to an optical fiber for long period grating (LPG), LPG components, and manufacturing method of LPG used as a mode coupler, an optical filter, etc. The optical fiber for LPG...
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7358858 |
Road-ice detecting sensor, method for installing same, and road-ice detecting method
A road-ice detecting sensor includes: a temperature sensing member of T shape made of a highly heat conductive metal, having a temperature sensor to be grounded onto a road and a fin part erected...
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7359597 |
Birefringence control in planar optical waveguides
A planar optical waveguide has a set of diffractive elements and confines propagating optical signals in at least one transverse spatial dimension. Each diffractive element set routes, between...
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7359587 |
Photonic interconnections that include optical transmission paths for transmitting optical signals
Various embodiments of the present invention are directed to photonic interconnection architectures that provide high-speed interconnections of microscale or nanoscale devices. In one embodiment of...
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7355162 |
Optical wavelength measuring device using guiding body and diffractive structure
An optical characterization device has a guiding body and a diffractive structure integrated with it. The guiding body delivers radiation to the diffractive structure at a preselected angle and the...
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7356259 |
Optical bypass upgrade configuration
Optical bypass node upgrade configurations are disclosed: (1) a configuration where optical taps are pre-positioned in wavelength division multiplex (WDM) line systems terminating at...
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7352931 |
Method and phase mask for manufacturing a multi-channel optical grating
A method for manufacturing a complex multi-channel optical grating using a phase mask is presented. A plurality of sub-gratings is designed, each having an individual spectral response designed to...
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7352932 |
Guided-mode resonance filter and fabrication method of same
A silicon bulk-micromachining technology is used to fabricate a GMR filter by exploiting the structure of a suspended silicon nitride (SiNx) membrane on the silicon substrate. A first silicon...
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7349600 |
Active in-fiber optic components powered by in-fiber light
An optical fiber system that includes an in-fiber optic component powered by in-fiber light includes an optical fiber having a core, wherein the optical fiber propagates a sensing/signal light and...
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7349599 |
Etched surface gratings fabricated using computed interference between simulated optical signals and reduction lithography
A method comprises: formulating a design input and output optical signals; computing an interference pattern between the simulated input and output optical signals; computationally deriving a...
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7349598 |
Surface plasmon resonance device
A surface plasmon resonance device of the present invention includes a transparent medium layer and a conductive layer, a periodic structure being present at the interface therebetween. Assuming...
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7349590 |
Polarization modulation interrogation of grating-coupled waveguide sensors
An optical interrogation system and a GCW sensor are described herein that are used to determine whether a biological substance (e.g., cell, molecule, protein, drug) is located in a sensing region...
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7349628 |
MMI based device
A device and method for multiplexing or demultiplexing M optical signals, each having a different wavelength λ m . An MMI waveguide has a length such that each optical signal that propagates into...
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7346238 |
Grating into a high index contrast strip or channel waveguide
A high index difference coupler includes a high index difference waveguide having one or more modes. A plurality of gratings is formed on the high index difference waveguide. The effective index...
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7343064 |
Optical switch and optical add/drop multiplexer
To provide a wavelength-selection optical switch able to select a light with a certain wavelength and an optical add/drop multiplexer using the same. An optical switch comprising: a silicon...
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7342217 |
System for the measurement and data acquisition for optical fiber sensors
A system for the measurement and surface data acquisition for optical fiber sensors containing Bragg gratings for the sensing of physical parameters originated from a set of oil wells, the system...
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7340187 |
Optical signal monitoring method and apparatus
In an optical signal monitoring method in wavelength multiplexing and an optical network, an area corresponding to a characteristic pattern of an eye pattern of an optical signal to be monitored,...
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7340175 |
Non-uniform optical waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system
Hierarchical hybrid optical networking is based on balancing cost and performance of optical networks by providing transparent (optical) switching of subsets of wavelengths in addition to opaque...
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7340119 |
Optical sensor and system
An optical sensor has a core, a cladding, and an over-layer. In some embodiments the optical sensor also has a sensing layer. The over-layer acts as a sensitivity enhancement layer, with a...
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7336855 |
Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide
A self-electrooptic effect device (“SEED”) is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide...
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7336861 |
Fiber-optic sensor or modulator using tuning of long period gratings with self-assembled layers
The provision of an ionic self-assembled multilayer (ISAM) film on a fiber-optic element including a long period grating (LPG) by a simple, room temperature process provides tuning of the LPG...
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7336872 |
Localized annealing of UV induced index grating in optical waveguides
A method for producing a Bragg grating in an optical waveguide device such as an optical fiber. The optical fiber is exposed to a UV source through a phase mask and this produces a Bragg grating on...
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7336862 |
Fiber optic sensor for detecting multiple parameters in a harsh environment
A fiber optic sensor is provided. The fiber optic sensor includes a fiber core having a plurality of Bragg grating elements wherein, the grating elements comprise a periodic or a quasiperiodic...
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7333696 |
Tape-shaped optical fiber cable
A tape-shaped optical fiber cable has: a tape member formed of a fiber material and a cured resin formed around the fiber material; and an optical fiber embedded in the tape member. The optical...
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7333688 |
Method and apparatus for free-space optical switching
An apparatus and method are provided for manipulating light beams propagated through PLCs in free space. Light beams propagated in through an input/output waveguide of a PLC are propagated through...
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7333692 |
Optical waveguide assembled with an optical subunit having a diffractive element set and an optical component
An apparatus comprises an optical transmission element, a diffractive element set formed in or on the transmission element, and an optical component. The diffractive element set is positioned to...
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7330659 |
Wavelength filter that operates on sets of wavelength channels
A wavelength filter, for filtering a WDM signal, comprises a demultiplexer, a multiplexer, and a control array connecting the demultiplexer and the multiplexer, where the demultiplexer and the...
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7330657 |
Method to demultiplex wavelengths of light
An apparatus and method for demultiplexing multiple wavelengths of light. In one embodiment, an optical signal having a plurality of wavelengths is provided to an optical-to-electrical (OE) circuit...
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7330618 |
Waveguide structure
An improved waveguide structure employing blocks of waveguide core material positioned sufficiently close to a waveguide core thereby eliminating strain effects and its resulting undesirable...
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7327912 |
Wavelength division multiplexer/demultiplexer
Disclosed is a wavelength division multiplexer/demultiplexer having a grating for demultiplexing a multiplexed optical signal, an input waveguide and an output waveguides. The input waveguide...
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7327924 |
Generalized transverse bragg waveguide
According to various embodiments, the present teachings relate to Generalized Transverse Bragg Waveguides (GTBW) that can include an a dielectric core having an index of refraction n 1 and an...
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