Matches 51 - 100 out of 391 < 1 2 3 4 5 6 7 8 >
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7031579 High resolution display component, system and method  
An optical system provides a higher resolution image, especially for use with a projection system, using a combiner formed of fiber optics each having an input end and an output end, with the fiber...
7016568 Arrayed waveguide grating with increased uniformity of a performance parameter  
An arrayed waveguide grating (AWG) device ( 1 ) comprising a substrate having a first array of waveguides ( 8 ) optically coupled between first and second slab couplers ( 3, 4 ) and a second array...
7006729 Optical components having reduced insertion loss  
An optical device is provided which includes a slab waveguide and at least one input waveguide coupled to a first side of the slab waveguide. The device also includes a plurality of output...
6999646 All optical data selection element  
An all-optical switch includes a field combiner to produce a first intermediate signal by combining electric fields of an optical information signal and an optical control signal; a fist power...
6993217 Optical switch device  
In an optical switch device: output waveguides are arranged with such a pitch as to realize a split wavelength gap equal to or smaller than half of a gap between operating wavelengths of optical...
6990278 Mode multiplexing optical coupling device  
An efficient tapered optical fiber bundle along with the method of manufacturing is presented. The tapered fiber bundle is fully fused to an induced shape with no interstitial space between fibers....
6959131 Achromatic fiber-optic power splitter and related methods  
An achromatic power splitter is formed from multiple optical fibers. The achromatic power splitter operates single mode, which permits the power splitter to operate substantially insensitive to...
6956993 Arrayed waveguide gratings with improved transmission efficiency  
An arrayed waveguide grating (AWG) with improved transmission efficiency includes an input P×M star coupler, an output M×Q star coupler, and M waveguides of unequal length connecting the input...
6904208 Optical power splitter with assistance waveguide  
Disclosed is an optical power splitter that maximizes uniformity of the power split ratio, while minimizing the output differences between channels. The optical power splitter includes a...
6892006 Fiber optic light mixer  
An optical structure for combining light from a plurality of individual optical fibers into a single optical transmission device. The structure can be incorporated into the optical probe of a...
6882779 Arrayed waveguide grading with optical input and output characteristics settable to desired values  
A waveguide device has an input waveguide, a plurality of output waveguides, a channel waveguide array, an input slab waveguide, and an output slab waveguide. The output slab waveguide connects an...
6873773 Method of cross-connecting optical fibers  
A method of cross-connecting or reorganizing individual optical fibers of a plurality of fiber optic ribbons include the steps of providing a substrate having an adhesive thereon with a mixing zone...
6859586 3 Fibre I and Q coupler  
An optical coupler 10 comprising at least three fibres 12, 14 and 16 , portions of the fibres being fused to each other to form a coupling region 30 operable to couple light therebetween. At...
6836600 Optical coupler with low loss interconnections  
An apparatus for optical coupling having a first array of individual waveguides optically communicating with a free space region at a first junction and each waveguide having a tapered region...
6826332 Arrayed waveguide grating and its method for correcting center wavelength  
At least one of two slab waveguides constituting an arrayed waveguide grating is cut and separated together with a substrate on a cross separating face. A slide moving member is arranged over a...
6826331 Method of extracting spectral parameters of channels from non-channelized light  
A method of assembly is presented for a multi-wavelength optical monitor (MWOM) for use in fibre optic telecommunication networks. The method allows coarse optimisation to be used to align an input...
6823096 Broadband optical switching arrangements with very low crosstalk  
A switching apparatus provides 1×2 and 2×2 switching functions having significantly reduced crosstalk levels using an imaging arrangement of three arms combined with two star couplers. In another...
6813415 Wavelength multiplexing/demultiplexing apparatus  
The present invention aims at providing a wavelength multiplexing/demultiplexing apparatus for reducing a loss at a portion where an input slab and channel waveguides are connected with each other,...
6788837 Method and apparatus for interleaving and switching an optical beam in a semiconductor substrate  
An optical interleaving switching method and apparatus. In one aspect of the present invention, the disclosed apparatus includes first and second multi-mode interference (MMI) coupling devices...
6788854 Optical coupler and AWG having the same  
The invention pertains to an optical coupler comprising at least one input waveguide, a coupling region, and a plurality of output waveguides. The coupling region comprises a plurality of coupled...
6775437 Temperature compensated optical waveguide structures  
A folded optical waveguide structure comprises a substrate supporting a waveguide slab. An array of laterally spaced grating waveguides extends from the slab along the substrate to propagate...
6775439 Optical circuit device and optical transceiver  
An optical circuit device makes lightwaves respectively having different wavelengths fall on a filter at different incident angles, respectively. The optical circuit device includes a filter, a...
6768840 Arrayed waveguide grating and method for manufacturing the same  
An arrayed waveguide grating including at least one first optical waveguide, a first slab waveguide, an arrayed waveguide, a second slab waveguide and a plurality of second optical waveguides. The...
6735363 Waveguide-grating router with output tapers configured to provide a passband that is optimized for each channel individually  
An optical integrated circuit (OIC) or optical apparatus upon which a waveguide-grating router (WGR) device is fashioned is provided, where the circuit is configured to optimize a passband for each...
6728448 Device for generating a quadrangular illuminating field and use of such device in an optical device comprising a surface to be illuminated having a predetermined shape  
In a device for generating a quadrangular illuminating field, having a light mixing rod, which has a quadrangular cross-section as well as a quadrangular inlet area and a quadrangular outlet area...
6718096 Compact and multiple optical fiber coupler and method of making the same  
A compact and multiple optical fiber coupler in which plural fused-tapered coupler portions 13 - 1 and 13 - 2 , which have plural optical fibers 11 a - 1, 11 b - 1, 11 a - 2 and 11 b - 2 to...
6714704 Optical component having selected bandwidth  
An optical component is disclosed. The optical component includes an input waveguide having an expansion region expanding from an input port to a multimode port. The expansion region is configured...
6697553 Compact, low insertion loss, high yield arrayed waveguide grating  
A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide...
6690862 Optical fiber circuit  
An optical circuit comprises: (a) a body having an x and y axis and two sides substantially parallel to the y-axis and separated along the x-axis; (b) a plurality of first ports along one of the...
6647180 Tunable optical dispersion by using two fiber Bragg gratings with nonlinear group delays  
Techniques and designs for producing tunable optical dispersion by using two fiber Bragg gratings with nonlinear group delays to sequentially reflect an input optical signal and by tuning at least...
6643432 Optical waveguide device and optical waveguide method  
An optical waveguide device comprises an input waveguide for converting incident light into a single optical mode, a plurality of output waveguides for splitting power of incident light and...
6643427 Waveguide-arrayed optical wavelength multiplexer/demultiplexer and fabrication method of the same  
To provide a waveguide-arrayed optical wavelength multiplexer/demultiplexer in which a mode configuration of a waveguide slab output part is matched to a mode configuration of waveguide array input...
6628853 Optical amplifiers  
An optical amplifier is constituted by a planar waveguide having an optical core intersected by a transverse trench occupied by a polymeric optically amplifying medium. An optical pump for the...
RE38237 Fibre optic couplers  
A fused fiber optic 1×4 or 2×4 coupler in which four optical fiber segments (A, B, C, D) extend longitudinally beside each other in a coupling region in which the fiber segments are at least...
6597841 Multi-output arrayed waveguide grating demultiplexer  
An optical device for receiving an optical signal of one or more wavelengths comprises an n-way optical coupler, where n is any integer ≧2, to split the optical signal by an intensity ratio into...
6594424 Light mixing rod comprising an inlet area and an outlet area and use of such a light mixing rod in an optical device comprising a surface to be illuminated  
In a light mixing rod comprising an inlet area and an outlet area, which guides light coupled in via the inlet area along a light guiding direction to the outlet area, two mixing rod portions are...
6580862 Optical waveguide circuit  
An optical waveguide circuit is provided that can reduce or eliminate polarization dependence by reducing or eliminating birefringence. A substrate consists of a silicon substrate, and a cladding...
6577789 Double-pass optical amplifiers and optical network equipment  
Optical amplifiers and other optical network equipment for handling optical data signals in fiber-optic communications links are provided. Optical fiber that is pumped by laser diode pumps may be...
6571037 Arrayed waveguide gratings  
An arrayed waveguide grating [WDG] comprises I/O slabs ( 53 a , 53 b ) interconnected by a grating region ( 51 ). The grating region ( 51 ) comprises many, e.g. at least 25 and preferably 50 to...
6567581 Fiber optic dense wavelength division multiplexer utilizing a multi-stage parallel cascade method of wavelength separation  
An improved dense wavelength division multiplexer for the separation of optical channels is provided. The dense wavelength division multiplexer includes the inputting of an optical signal with the...
6563988 Optical apparatus and method having predetermined group velocity dispersion  
An optical apparatus and method establishes a value of group velocity dispersion in wavelength division multiplexing applications. The optical apparatus includes at least one input waveguide, a...
6553165 Optical waveguide gratings  
An optical waveguide device comprising a free space region, suitably provided by a slab waveguide, having optical signal ports for coupling to input and output waveguide sections and an optical...
6549698 Large N×N waveguide grating router  
The limitation of N in an N×N Wavelength Grating Router (WGR) is determined to be because of the intrinsic diffraction characteristics of the grating that occurs when N approaches the diffraction...
6549696 Optical wavelength multiplexer/demultiplexer  
An optical wavelength multiplexer/demultiplexer includes a substrate, an input channel waveguide, an input slab waveguide, a channel waveguide array which has a plurality of channel waveguides,...
6546167 Tunable grating optical device  
One aspect of the invention is an optical add/drop multiplexer. The optical add/drop multiplexer includes a first optical circulator, the first circulator includes a first port, a second port, and...
6546169 Pump couplers for double-clad fiber devices  
Techniques and devices that optically couple multiple pump fibers and a signal input fiber to a double-clad fiber with a high coupling efficiency.
6542675 Apparatus and method to use a tapered fiber bundle in a free space optical communication system  
An apparatus and method implements a first plurality of single-mode optical fibers into which to inject wavelength division multiplexed (WDM) optical signals. A tapered fiber bundle (TFB) is...
6535662 Toad having enhanced extinction ratio of the switching window  
A Terahertz Optical Asymmetric Demultiplexer (TOAD) having preferably two non-linear elements (NLES) in which the extinction ratio is enhanced by saturating both NLEs when closing a switching...
6526199 Arrayed waveguide grating wavelength division multiplexer provided with alignment waveguides and apparatus for aligning the same  
An arrayed waveguide grating (AWG) wavelength division multiplexer (WDM) provided with alignment waveguides, and an apparatus for aligning the arrayed waveguide grating wavelength division...
6526202 Grating waveguide configuration for phasars  
A grating is provided having a generally s-shaped waveguide configuration. The grating includes a plurality of waveguides arranged adjacent to one another to form an array. The array includes a...
Matches 51 - 100 out of 391 < 1 2 3 4 5 6 7 8 >