Matches 151 - 200 out of 391 < 1 2 3 4 5 6 7 8 >
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6181849 Interleaved wavelengths multi/demultiplexer with multiple-input-ports and multiple-output-ports for wavelength add/drop WDM systems  
The present claimed invention improves on the conventional comb and multiple router approach by making multiple use of a single router by using interleaved groups of wavelengths that enter through...
6175668 Wideband polarization splitter, combiner, isolator and controller  
A wideband polarization splitter and combiner is fabricated using either fiber coupler technology or planar coupler technology. The device splits or combines wideband light signals without losing a...
6163637 Chirped waveguide grating router as a splitter/router  
A wavelength-dependent splitter/router is made by chirping a waveguide grating router, such that the path-length difference between pairs of adjacent grating arms is not a constant. With careful...
6160930 Optical sample and hold architecture  
The optical hold unit (100) of the present invention includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. A 1×N optical splitter (106) is also...
6144783 Optical multiplexter/demultiplexer  
An optical multiplexer/demultiplexer with an improved spectral characteristic is provided by two diffraction gratings (61, 60) arranged optically in tandem, the gratings being arranged to provide...
6137939 Method and apparatus for reducing temperature-related spectrum shifts in optical devices  
The present invention teaches a novel technique for reducing the temperature-related spectrum shifts in optical devices, particularly waveguide grating routers (WGR). In general, the present...
6134360 Optical fibre sleeve  
A sleeve for retaining a plurality of optical fibers in a close or contacting relationship is provided. The sleeve has a bore receiving a number of optical fibers. The internal surface of the bore...
6125228 Apparatus for beam splitting, combining wavelength division multiplexing and demultiplexing  
The present invention uses a light-pipe for beam splitting, combining, hybrid space-wavelength multiplexing, hybrid space-wavelength demultiplexing, dense wavelength division multiplexing, and...
6118909 Athermal optical devices  
Optical devices, such as wavelength routers, having a plurality of waveguides of differing lengths, with improved independence to temperature fluctuations. Improved temperature independence is...
6115516 Wavelength division multiplex branching unit and method of operation for optical transmission systems  
A wavelength division multiplex branching unit for an optical fibre transmission network comprises a branching unit housing (100) and means (102) external to the housing for permitting the...
6112000 Reflective array multiplexer with polarization compensation  
An optical multiplexer is formed that overcomes the polarization dependence of conventional DWDM routers and is also significantly smaller than prior art routers. A reflective router is formed that...
6097861 Multi-wavelength channel transmission filter  
An improved multi-wavelength channel transmission filter, by which it is possible to selectively and simultaneously separate multiple wavelength channel signals without any optical time delays...
6094513 Demultiplexer with a square spectral response  
The present invention relates to a multiplexer and/or demultiplexer optical component of the waveguide array spectrograph type, wherein the waveguides are numbered in order of increasing optical...
6084992 Arrangement and method relating to optical transmission  
An arrangement and a method route wavelength dependent optical signals including a number of wavelengths. The arrangement includes an optical Add-Drop multiplexing arrangement with input and output...
6067388 Method of making an integrated optical component and an integrated optical star coupler made in accordance with said method  
The invention is directed to a method for making integrated optical components having strip waveguides (11 to 15; 21 to 2M) and a layer waveguide 53. A mask 4 having a lattice structure 3i...
6067389 Wavelength-selective optical cross-connect  
An optical switch includes an optical router portion for distributing multi-wavelength optical signals received at input ports of the switch, an optical combiner portion for supplying...
6058233 Waveguide array with improved efficiency for wavelength routers and star couplers in integrated optics  
An optical interconnection apparatus including waveguide arrays, such as grating routers and star couplers, has reduced coupling loss by reducing the width of the waveguides in the array, where...
6055349 Optical waveguide device and manufacturing method therefor  
An optical device and manufacturing method therefor relate to a slab optical waveguide, a first optical waveguide, a plurality of second optical waveguides and a reflector. The slab optical...
6049645 1XN and NXN fiber optic couplers  
The present invention provides fiber optic couplers for use with at least three optic fibers. The optic fibers arranged in a linear array, that is, the optic fibers are coupled side by side. The...
6049640 Wavelength-division-multiplexing cross-connect using angular dispersive elements and phase shifters  
A Wavelength-Division-Multiplexer (WDM) cross-connect is implemented using two connected units of angular dispersive elements, with non-zero relative phase shifts between the elements, which are...
6049644 Optical routing device having a substantially flat passband  
An optical apparatus having a specifiable passband width comprises a first free space region that has at least one input port configured to receive light waves traveling through a first waveguide...
6021243 Low-cost planar star-coupling structure for large-core polymer optical fibers  
A low-cost star-coupler assembly primarily for use in optical data networks is fabricated from three modular components. The first component is a support plate having at least two sets of grooves...
6018603 Optical demultiplexing/multiplexing device having a wavelength dependent element  
A device capable of demultiplexing or multiplexing optical signals includes a wavelength dependent element for separating an input beam into sub-beams of light in accordance with their wavelength....
6016373 Apparatus and method for configuring a fiber optical assembly  
In a fiber optic assembly that is sealed within an enclosure and that has a plurality of optical transmission paths available to transmit input signals through the assembly, a separate link is...
6014480 Optical energy selector apparatus and method  
A channel selection method and apparatus accommodate the dynamic reconfiguration of channels that are passed through parallel waveguides by selectively tuning Bragg gratings along the waveguides....
6002818 Free-space optical signal switch arrangement  
A free-space N by M, where N and M>1, optical signal switch (OXC) requires only transmitter beam steering for controlling to which receiver an optical signal from a transmitter is directed. In a...
6002820 Optical branching and insertion apparatus  
An object of the present invention is to provide an optical branching and insertion apparatus with which the damage location can be searched for in all sections when a damage location is searched...
5978532 Spectrographic multiplexer component having an array of waveguides  
A spectrographic type multiplexer and/or demultiplexer optical component having an array of waveguides, the component comprising a star inlet coupler and a star outlet coupler with said array...
5953467 Switchable optical filter  
In accordance with the invention, a switchable optical filter comprises an optical splitter coupled to an input waveguide, one or more output waveguides and a plurality of interferometer...
5943452 Arrayed-waveguide grating  
An arrayed waveguide grating including an input waveguide or input waveguides, an input side slab waveguide lens, arrayed waveguides, an output side slab waveguide lens, and an output waveguide or...
5940555 Optical multiplexer/demultiplexer  
Provision of a predetermined number of artificial waveguides having a predetermined core width along a plurality of channel waveguides on both sides of an array waveguide diffraction grating can...
5926587 Optical passband filters  
Two or more wavelength routers are cascaded together to form a passband filter with low levels of crosstalk between different channels of a wavelength division multiplexing (WDM) stream. Cascading...
5915054 Star coupler for an optical communication network  
An interconnectable star coupler for an optical communication network is formed using 1×2 branching circuits, 2×2 branching circuits, and optical waveguides. Branching circuits may be connected...
5913000 Method and apparatus for guiding optical signals  
A method and apparatus for guiding optical signals in a laser cavity to determine the oscillation frequency or frequencies of a laser by controlling the lengths of waveguide grating arms.
5909522 Chirped waveguide grating router with focal length adjustment  
An improved waveguide grating router enhances the transmissivity of a dominant passband selected from a plurality of passbands. The router includes a first waveguide coupler, a second waveguide...
5892868 Fiber optic coupler combiner and process using same  
A fiber optic coupler having a first lens element for inputting a point source of light from an optical cable and outputting a collimated light, optically coupled to one or more lens elements for...
5889906 Signal router with coupling of multiple waveguide modes for provicing a shaped multi-channel radiation pattern  
A signal router includes a free space region with input and output sides. A number of input and output waveguide arms extend from the respective input and output sides of the free space region. At...
5889908 1xN fiber optic coupler/splitter  
The end portions of a plurality of optical optical fibers are stripped; the coated portions of the fibers constituting pigtails. The stripped portion of one of the fibers is fused to an uncoated...
5883991 Optical waveguide circulator  
There are provided a first optical waveguide having a first curved portion, a second optical waveguide having a second curved portion that extends along and is disposed inside the first curved...
5872883 Curved optical waveguide and method of manufacturing the same  
The present invention provides a curved optical waveguide with reduced loss. Particularly, it relates to a waveguide with rectangular cross-section which has a curved portion, wherein the relation...
5862288 Self-imaging waveguide devices for wavelength division multiplexing applications  
An out-of-phase self-imaging waveguide integrated optical wavelength demuplexer having an input waveguide containing light of two different wavelengths. The demultiplexer has a 1-by-2 self-imaging...
5844236 Multi-wavelength optical drive/sense readout for resonant microstructures  
A method of driving and sensing a resonant sensor network wherein a least a one resonant sensor is driven by a first light from a first light source at a first frequency, wherein said first light...
5845022 Double-chirped waveguide grating router with angled ports  
An improved waveguide grating router occupies less physical volume than prior-art designs, and provides a spectral response with substantially one dominant passband, by providing...
5841918 Wavelength and bandwidth tunable optical system  
A system for modifying an input optical signal by reducing its bandwidth and modifying its central wavelength has an optical circulator with at least three ports and at least two optical filters...
5841921 Optical coupling device  
The present invention features a rectilinear optical coupler consisting of a single optical fiber terminating in an expanded, convex portion. An array of optical fibers consisting of a central...
5838849 Optical component wherein either an optical field distribution of received light or an optical field distribution of a propagation mode of a receiving waveguide has a double-hump shape  
An optical waveguide having a light receiving end and a propagation mode with a double-hump shaped optical field distribution at the light receiving end to receive light into the optical waveguide....
5838853 Optical waveguide  
An optical waveguide having stable low branching ratio is disclosed, which includes a primary optical waveguide portion coupled at a input end thereof to an input-side optical fiber. branched...
5822474 Optical branching apparatus and transmission line setting method therefor  
An optical branching apparatus for branching optical transmission lines as reverse and forward links through a plurality of ports includes a plurality of demultiplexing units, a plurality of...
5822481 Waveguide grating optical demultiplexer  
The demultiplexer has two couplers connected together by a grating of waveguides that are all of different lengths. To make a grating component of low order and that occupies little space, each...
5822475 Optical bus and signal processor  
To improve resistance to environmental changes and enhance system extensibility, the present invention provides an optical bus for transmitting an optical signal, which has diffusers distributed in...
Matches 151 - 200 out of 391 < 1 2 3 4 5 6 7 8 >