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7622705 |
Dielectric microcavity fluorosensors excited with a broadband light source
A microresonator sensor apparatus has a microcavity resonator that defines equatorial whispering gallery modes (EWGMs), whose frequencies are separated by the free spectral range (FSR). The EWGMs...
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7609919 |
Coupling-enhanced surface etched gratings
The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has...
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7609918 |
Method and apparatus for optical mode division multiplexing and demultiplexing
A method of mode selective coupling or mode multiplexing between integrated multimode ( 600 ) and single mode ( 602 ) waveguides. Evanescent coupling and tapering is used so that the signal may be...
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7593610 |
Multi-mode optical coherence device and fabrication method thereof
In an MMI device with which a plurality of narrow width single-mode waveguides are provided at both ends of a multimode waveguide M, and light introduced into one single-mode waveguide on the input...
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7590317 |
High energy fiber optics laser delivery system with improved scrambling capabilities
The methods and apparatus of the present invention provide advantages for remote laser delivery systems that conduct high levels of light energy through a fiber optic cable to a target surface....
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7577327 |
Optical junction apparatus and methods employing optical power transverse-transfer
An optical apparatus comprises an optical device formed on a device substrate, a first optical waveguide formed on the substrate or on the optical device, and a second, mechanically discrete...
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7577325 |
Method of fabricating a polarization sorter
A method of fabricating a passive polarization sorter includes the steps of providing first and second waveguides. The first waveguide has an input and an output. The first waveguide supporting at...
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7574081 |
Optical system with optical waveguides
The present invention provides an optical system with waveguides, which comprises first, second and third optical input/output means ( 12, 14, 16 ), fourth and fifth multi-mode optical waveguides (...
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7565046 |
Mode transformers for low index high confinement waveguides
The mode transforming structure includes a first waveguide structure. A slot waveguide region is coupled to the first waveguide structure. The slot waveguide region includes one or more...
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7557985 |
Light emitting device
A light emitting device includes a first unit having a first excitation light source including a laser element emitting blue wavelength band excitation light, and a first wavelength converting...
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7555180 |
Optical branching component with low polarisation sensitivity and increased process tolerance
An optical branching component particularly suitable for use as a tap device is described. The component has two optical waveguides coupled between two optical couplers which each include at least...
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7539373 |
Integrated lateral mode converter
The invention describes method and apparatus for a mode converter enabling an adiabatic transfer of a higher order mode into a lower order optical mode within a photonic integrated circuit...
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7536069 |
Method and apparatus for resonant coupling in photonic crystal circuits
The present invention is a method and an apparatus for resonant coupling in photonic crystal circuits. In one embodiment, a photonic crystal device comprises a substrate having a plurality of...
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7526165 |
Optical coupler devices, methods of their production and use
The present invention relates in general to coupling of light from one or more input waveguides to an output waveguide or output section of a waveguide having other physical dimensions and/or...
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7505648 |
Device comprising a polarization-independent micro-resonator
Polarization-diverse optical devices and related methods are disclosed. In some embodiments, these devices and methods are realized by utilizing a four-port, wavelength-dependent optical coupler...
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7499610 |
Method of using a polarization sorter
A method of using a passive polarization sorter comprising the step of deploying a first waveguide and a second waveguide forming an adiabatic region along a portion of their length. Then, an input...
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7496127 |
Optical device coupling light propagating in optical waveguide with diffraction grating
An optical waveguide propagates a laser beam. Main diffraction grating and sub-diffraction grating couple light propagating in the optical waveguide. The main diffraction grating and the...
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7474812 |
Monitor photodetector equipped optical modulator
An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident...
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7469084 |
Structure comprising an adiabatic coupler for adiabatic coupling of light between two optical waveguides and method for manufacturing such a structure
A structure comprises an inner strip waveguide ( 1 ) and an outer rib waveguide ( 2 ) on a common substrate. The thicker inner waveguide ( 1 ) is patterned into an inner core layer ( 3 ). The...
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7466889 |
High-quality-factor tunable microdisk
An optical device includes a waveguide and a microdisk that is optically coupled to the waveguide. The gap between the microdisk and the waveguide is between 0.3 microns and 0.7 microns. The...
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7457495 |
Method of filtering optical signals with a capillary waveguide tunable optical device
A method of filtering optical signals ( 300 ) utilizing an optical fiber ( 100 A- 100 D). The method of filtering optical signals ( 300 ) includes the steps ( 304 ) selecting an optical fiber ( 100...
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7450788 |
Optical splitter/coupler and optical communication system
An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting...
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7440651 |
Single mode whispering-gallery-mode resonator
Whispering-gallery-mode (WGM) resonators configured to support only a single whispering gallery mode.
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7434940 |
Light coupling system and method
A light coupling system includes a waveguide, configured to receive light from at least two light sources and to internally reflect light therein; a diffraction grating, disposed upon the...
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7424193 |
Composite waveguide
A composite waveguide comprising a central core and at least one side core helically wound about said central core and in optical proximity to said central core.
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7415177 |
Dispersion compensation device and dispersion compensation method
A dispersion compensating fiber whose chromatic dispersion is positive and a negative dispersion compensating fiber whose chromatic dispersion is negative are prepared, and division-multiplexed...
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7415175 |
High bit rate optical communication over multimode fibers
An optical communication system includes a transmitter that receives an input optical signal from an optical source and performs filtering so that an output signal from the transmitter includes a...
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7412134 |
Apparatus and methods for remakeable connections to optical waveguides
A single-mode optical waveguide with a core, surrounded by a cladding consisting of an inner soft layer and an outer harder layer is described. The outer layer has a grating structure on its inner...
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7409128 |
Pumping arrangement for fiber amplifiers with reduced reflective feedback
An improved tapered fiber bundle (TFB), or assembly including a TFB, mitigates undesirable reflections from optical discontinuities at the input ends of the multimode fibers of the TFB by...
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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...
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7400800 |
Arrayed waveguide grating type optical multiplexer/demultiplexer circuit
An arrayed waveguide grating type optical multiplexer/demultiplexer circuit in which wavelength dispersion is reduced. An input wave guide ( 1 ), a first slab waveguide ( 2 ), an arrayed waveguide...
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7400797 |
Transverse closed-loop resonator
A transverse closed-loop fiber resonator ( 10 ) includes an inner cladding ( 102 ) having a surface ( 300 ) peripherally forming a closed-loop shape for confining light to the surface ( 300 ). The...
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7397983 |
Light applicator and method for producing a diffuser
A light applicator ( 27 ) for medical applications is proposed whose diffusor ( 1 ) comprises diffusion regions ( 7, 8, 9 ) with paraboloidal boundary surfaces ( 11, 12 ) This configuration of the...
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7391948 |
Optical waveguide structure
Waveguide structures in which light confinement strength varies along the direction of light propagation are described. The waveguides include a core adapted to propagate light along a path defined...
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7389053 |
Tunable filtering of RF or microwave signals based on optical filtering in Mach-Zehnder configuration
Devices and techniques for achieving signal filtering in RF or microwave frequencies by optical filtering using two separate optical paths. Each optical path may include one or more optical...
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7382958 |
Photonic crystal wave guide optical spectrometer
An optical instrument for splitting optical spectrum, comprising a series of hollow core optical wave guides ( 12, 22 , and so on) connected by optical couplers ( 16, 26 , and so on) transporting...
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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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7373048 |
Polarization insensitive semiconductor optical amplifier
A polarization insensitive semiconductor optical amplifier (SOA) is provided. The SOA includes an active waveguide, a passive waveguide, and a taper coupler for coupling optical energy from the...
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7373042 |
Polarization sorter
A polarization sorter having an input, an output and a slowly varying region. The input has at least one input waveguide. The input waveguide supports at least one guided TE polarized mode of mode...
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7369732 |
Chromatic dispersion-compensating optical fibre in the S-band using a higher order mode
The invention relates to an chromatic dispersion-compensating optical fibre in the S-band, for use in compensating for the chromatic dispersion of either a standard SMF optical fibre or of an...
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7369727 |
Apparatus for coupling electromagnetic energy and method of making
An electromagnetic coupler comprising: a coupling waveguide adapted for receiving input modes along an input axis, propagating coupling modes along a coupling axis, and transmitting output modes...
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7359593 |
Integrated optical mode shape transformer and method of fabrication
An integrated optical mode transformer provides a low loss interconnection between an optical fiber and an integrated optic waveguide having a spot size different from that of the fiber. The mode...
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7359588 |
Electroabsorption modulator and method of manufacturing the same
Provided is a double waveguide electroabsorption modulator, in which two spot size converters are integrated between first and second optical waveguides, thereby reducing an insertion loss between...
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7356233 |
Suppression of transverse modes in bandgap microstructure optical fibers
An optical fiber comprises core and cladding regions configured to guide the propagation of light (or radiation) in the core region. The cladding region includes a periodic structure configured to...
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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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7343070 |
Optical splitter with tapered multimode interference waveguide
A 1×2 splitter design having low loss is described. The splitter has a non-adiabatic tapered waveguide ( 22 ) connected between a substantially single-mode input waveguide ( 20 ) and two output...
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7343061 |
Integrated photonic amplifier and detector
An asymmetric twin waveguide (ATG) structure with an integrated amplifier and detector fabricated in a single active waveguide layer is disclosed. The structure comprises an active waveguide layer...
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7343058 |
Efficient light coupler from off-chip to on-chip waveguides
In an embodiment, light from a single mode light source may be deflected into a low index contrast (LIC) waveguide in an opto-electronic integrated circuit (OEIC) (or “opto-electronic chip”) by...
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7333691 |
Low loss tunable ring resonator allpass filter
An apparatus, including an optical ring resonator having a waveguide ring with substantially straight waveguide segments and bent waveguide segments. The bent waveguide segments are optically...
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7333689 |
Photonic integrated devices having reduced absorption loss
An asymmetric twin waveguide (ATG) structure with quantum-well intermixing in the taper region of the active waveguide is disclosed. The structure comprises a first waveguide, a second waveguide,...
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