Matches 201 - 250 out of 391 < 1 2 3 4 5 6 7 8 >
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5818991 Optical coupling arrangement composed of a pair of strip-type optical waveguide end segments  
An optical coupling arrangement consist of a pair of strip-type optical waveguide end segments extending alongside one another and having ends arranged at a small distance from each other so that...
5818980 Polarization-independent, tunable, acousto-optical waveguide device for the wavelength selection of an optical signal  
An acousto-optical waveguide device for the wavelength selection of an optical signal comprises two polarization conversion stages, one polarization selective input element, one polarization...
5805755 Self-aligned transition from ridge to buried heterostructure waveguide, especially for multi-wavelength laser array integration  
An opto-electronic integrated circuit including an active ridge waveguide (60), for example, a semiconductor laser diode, and a passive buried heterostructure semiconductor waveguide (64). The two...
5793907 Method and apparatus for a wavelength selective true-time delay for an optically controlled device  
A two dimensional encoded filter for providing wavelength and time shifted output signals is comprised of a photonic integrated device in which the input signal is optically demultiplexed into a...
5790729 Photoplethysmographic instrument having an integrated multimode optical coupler device  
The integrated multimode optical coupling apparatus comprises an N-to-M optical coupling arrangement that is simple to manufacture, minimizes optical losses and is significantly less expensive than...
5764830 1×N and N×N 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...
5751872 Wavelength demultiplexer  
The demultiplexer comprises a diffraction space defined by a reception surface coupled to a grating. In order to obtain output waves of flattened spectral response, the input waveguide and the...
5748811 Optical switch  
An optical filter, such as a wavelength-division multiplexer, demultiplexer, or optical router, in which several single-mode waveguides are coupled to the sides of an optical interaction region...
5745612 Wavelength sorter and its application to planarized dynamic wavelength routing  
This invention provides methods and apparatus for achieving wavelength sorting multiplexer/demultiplexer and its application to the implementation of planarized dynamic wavelength routing. Using...
5745616 Waveguide grating router and method of making same having relatively small dimensions  
A compact waveguide grating router is constructed by forming at least first and second free space regions, first and second sets of optical ports, and a grating array, onto a substrate. The grating...
5745618 Optical device having low insertion loss  
An optical device 201, having one or more input waveguides 25 coupled to one side of a slab waveguide 20 and an array of output waveguides 26 coupled to an other side of the slab waveguide, is...
5742717 Optical star coupler  
An optical star coupler that distributes the optical signal radiated from an optical fiber uniformly across the mixing means and couples the distributed optical signal efficiently to the other...
5732171 Device for spatially separating and/or joining optical wave channels  
In a phased-array filter, mutually spatially separated planar waveguides arranged on the surface of a substrate between two substrate edges are optically connected to one another by an optical...
5717795 Optical wavelength division multiplexed network system  
An optical wavelength division multiplexed network system of this invention is designed to permit communications between any of a plurality of nodes via a main trunk line constructed by...
5712936 Hybrid bi-directional three color wave division multiplexer and method using same  
A hybrid, bi-directional, three-color, wave-division multiplexer (HB3-WDM), fiber optic communication system employs a combination of wide band and narrow band WDMs to multiplex three pairs of...
5712937 Optical waveguide including singlemode waveguide channels coupled to a multimode fiber  
An intrusion-alarmed optical fiber communication system, where light from two or more sources are launched with a planar channel waveguide launcher into two or more modes of a multimode...
5706377 Wavelength routing device having wide and flat passbands  
A wavelength routing device 500 includes a pair of dielectric slabs 10, 20 that are interconnected by an optical grating 30. The first dielectric slab 10 includes input ports for receiving optical...
5689595 Rare earth-doped fiber amplifier assemblies for fiberoptic networks  
Assemblies having a first optical circulator, a pumping laser, a rare-earth doped fiber and a first coupler are described. The first coupler has a first fiber connected to the optical circulator, a...
5680490 Comb splitting system and method for a multichannel optical fiber communication network  
A comb splitting system demultiplexes and/or multiplexes a plurality of optical signal channels at various wavelengths. The comb splitting system has at least two interconnected successive stages...
5680492 Singular fiber to bundle illumination with optical coupler  
A gradient index (GRIN) lens couples light from a single fiber optic into a fiber bundle or directly into the input port of an illumination device, such as a medical illumination device. The single...
5668903 Compound laser system for high power densities  
A compound laser system for generating beams of high brightness and high power density by constructive phase coherent combination of the beams generated by a number of individual sources of...
5666447 Using optical fiber multiplexer to combine light beams in a laser printer  
A color laser printing apparatus that incorporates the use of fiber optics and a flexible beam-combining device to combine two or more lasers having different wavelengths that correspond to the...
5664037 Multi-neckdown fiber optic coupler  
A unitary fiber optic coupling device in which N fibers (N≥3) extend in a parallel array having two coupling regions of reduced cross-sectional area. At least one of the fibers is formed of two...
5636300 MxO multiplex demultiplex component  
An M×O multiplex/demultiplex device is disclosed. An M×N coupler is connected to an N×O coupler by phase shifting means. The phase shifting means provide N paths between the couplers, each path...
5623369 Optical splitter  
An optical splitter arrangement is provided for accepting a light from at least one input and providing multiple light outputs of four or more, a light intensity of the outputs differing from one...
5615290 Branch device for optical multiplex system  
A branch device for use in an optical multiplex system allows three stations to be interconnected by a relatively small number of optical fibers. The branch device has WDM couplers each having a...
5608831 Fiber optic coupler and method of making same  
A low-cost, high performance 1×N fiber optic coupler where N>16 is presented. The coupler has a GRIN lens having an first optic fiber aligned with the optical axis of the lens at one end of the...
5600742 Wavelength grating router with output coupler  
The efficiency of an N×N waveguide grating router may be increased in many applications by incorporating at least one output waveguide, such as an (N+1) st waveguide, positioned for capturing...
5594823 Method of manufacturing a multi-fiber optical cross-coupler, and an optical cross-coupler obtained by performing the method  
The multi-fiber optical cross-coupler includes N peripheral fibers and a central fiber that are coupled together optically. The method of the invention for manufacturing such a cross-coupler...
5583958 Composite optical device  
A composite optical device has a first and second chips. The first chip has a substrate on which M pieces of optical waveguides for transmitting communication light, N pieces of optical waveguides...
5581641 Optical fiber multiport apparatus for detecting phase shifts  
A coherent detector which is insensitive to signal or polarization state may be assembled using a fused optical fibre multiport constructed from five optical fibres. The fibres are fused in a...
5579421 Optical integrated circuits and methods  
An optical integrated circuit provides a 1×2 power splitting function for a communication system and additionally provides at least one type of upgrade capability for the system. The upgrade...
5572612 Bidirectional optical transmission system  
Bidirectional transmission over a single optical fiber is obtained in an optical communications system by using a three port circulator in customer premises equipment together with an optical fiber...
5570442 Design and manufacture of an optimized waveguide-type multiple branched star coupler  
The present invention is an optical device including an optical circuit in which a plurality of branched optical waveguides are connected to a light receiving side and a light ejecting side of a...
5553179 Varied insertion loss fiber optic coupling and method of making same  
A varied ratio coupler, and a method of forming the same, constructed and arranged, in a unitary structure, to cause optical power in an input optical fiber to couple asymmetrically to at least two...
5546483 Integrated optical waveguide circuit and optical branch line test system using the same  
An integrated optical waveguide circuit includes a substrate; an optical wavelength multiplexer and an optical power splitter formed on a same surface of the substrate. The optical wavelength...
5542010 Rapidly tunable wideband integrated optical filter  
A monolithically integrated wideband optical filter which is rapidly tunable to a large number of optical frequencies over a wide optical frequency range comprises two series connected optical...
5537497 Optimized electrode geometries for digital optical switches  
An X-geometry optical switch includes primary and secondary input branch waveguides merging at a junction, and first and second output branch waveguides optically coupled to the input branches at...
5530940 Coupling device for light pipe system  
A device for coupling light from a light source to one or more light pipes is described. The device allows for direction of light from a single source through multiple light pipes with minimal loss...
5515460 Tunable silicon based optical router  
An apparatus is provided that allows the tunability of a waveguide bench router with a silicon-based material. This is accomplished by adding a triangular shaped layer of hydrogenated amorphous...
5502783 Polarization independent optical directional coupler wavelength tunable filters/receivers  
A polarization independent tunable filter/receiver for optical communications. The tunable filter, operating as a directional coupler, has three waveguides including a central, feedguide and a pair...
5493625 Fast tunable channel dropping filter  
A channel dropping filter includes three frequency routing devices, one which functions as an input device and two which function as output devices. The first frequency routing device has one input...
5488680 Frequency routing device having a wide and substantially flat passband  
An optical apparatus is provided that includes a first frequency routing device having at least one input port and P output ports, where P>2. A second frequency routing device is also provided...
5487122 Star coupler including waveguides having different radius of curvatures  
A first terminal is connected to a second terminal by means of a first waveguide having a first radius of curvature. The first terminal (or second terminal) is connected to a third terminal by...
RE35138 Achromatic overclad fiber optic coupler  
An achromatic fiber optic coupler of the type wherein a plurality of single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form...
5479545 Reverse flared optical coupling member for use with a high brightness light source  
An optical coupling assembly is useful for coupling a source of light, having high brightness and being non-coherent and focussed at a focal plane, to a plurality of optical light conductors. The...
5469277 Optical interconnection device  
In N×N optical couplers, such as are used in local area networks and backplanes of telecommunications and computer equipment, which use BRAGG volume diffraction means to couple light beams between...
5467418 Frequency routing device having a spatially filtered optical grating for providing an increased passband width  
An optical appliance includes at least one input waveguide and a first free space region connected to the input waveguide. A first plurality of waveguides is connected to the first free space...
5461685 Optical passband filter  
An optical passband filter having a frequency transition that is several of orders of magnitude narrower than prior optical filters includes two frequency routing devices. The first frequency...
5459804 Fiberoptic couplers having spacer fibers that have no optical cores  
The invention is a fiberoptic coupler formed by multiple optical fibers each having a core and a surrounding cladding and at least one spacer fiber having the refraction index substantially matched...
Matches 201 - 250 out of 391 < 1 2 3 4 5 6 7 8 >