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| Number | Title | Issue Date |
| 7680370 | Optical wavelength coupler using multi-mode interference Provided is an optical wavelength coupler using a multi-mode interference. The optical wavelength coupler is a planar waveguide type optical device that can distribute or couple two optical signals having different wavelengths by using the multi-mode interference. T... | 03/16/2010 |
| 7437029 | Method of manufacturing and apparatus for a transmitter photonic integrated circuit (TXPIC) chip A monolithic photonic integrated circuit (PIC) chip where the active waveguide cores of the modulated sources of the PIC are multiple quantum wells (MQWs) and the passive waveguide cores of an optical combiner are a bulk layer or material. The cores of the waveguide... | 10/14/2008 |
| 7428362 | Photonic crystal surface states A photonic crystal may be configured to support a surface state for logic. ... | 09/23/2008 |
| 7412124 | Optical module with high reflection isolation and compact size Techniques for designing optical devices with high reflection isolation are disclosed. According to one aspect of the devices, a pair of conjugate optical filters is used. To preserve the performance of the filters and minimize insertion loss, a lens has a first sid... | 08/12/2008 |
| 7403678 | Optical switching element An optical switching element comprising: a multimode waveguide having an electro-optical effect; one or a plurality of first single mode waveguides; a plurality of second single mode waveguides; a first electrode arranged in the vicinity of one edge on one side of t... | 07/22/2008 |
| 7403690 | Photonic crystal surface states A photonic crystal may be configured to support a surface state for logic. ... | 07/22/2008 |
| 7373049 | Optical deflection array An optical deflection matrix including at least two optical deflection modules each for providing, from an incoming beam having a given direction of propagation, an output beam having a direction of propagation taken in a set of potential directions. The modules eac... | 05/13/2008 |
| 7371016 | Method for producing an optical arrangement The invention relates to a method for producing an optical arrangement (10, 300), in which an optical component (355, 20) is optically connected to at least one waveguide (90, 320, 330) provided on or in a carrier substrate (100, 310). In... | 05/13/2008 |
| 7362929 | Optical switch An optical switch changes over transmission paths of an optical signal by a refractive index change. The optical switch has an optical waveguide layer having an optical waveguide whose output path of an optical signal branches into two, and reflection diffusing ditc... | 04/22/2008 |
| 7356222 | Wavelength selective optical device and method of tuning a wavelength characteristic of the same The invention provides a wavelength selective optical device in which a light emitted from an end surface of a first optical fiber that propagates optical signals with a plurality of multiplexed wavelengths is incident on a first end surface of a first graded index ... | 04/08/2008 |
| 7356030 | Network switch cross point A switching fabric having cross points that process multiple stripes of serial data. Each cross point includes a plurality of port slices and ports. Each port includes a plurality of FIFOs, a FIFO read arbitrator, a multiplexer, a dispatcher, and an accumulator. In ... | 04/08/2008 |
| 7352924 | Micro-optical device The present invention provides a micro-optical device which may be used as an optical pigtailing assembly for waveguides. In an exemplary configuration the assembly includes a first chip which includes an optoelectronic component and an optical fiber. The optical fi... | 04/01/2008 |
| 7349593 | Optical wavelength switch having planar lightwave circuit structure An optical wavelength switch having a planar wave-guide formed on a substrate including a wave-guide-type diffraction grating having an input/output wave-guide with an under-clad layer on a sacrificial layer formed on the substrate, a core layer formed on the under-... | 03/25/2008 |
| 7315670 | Optical switch An optical switch includes a plurality of light inputting members, a plurality of light outputting members, an optical coupling member which couples light to the light inputting members and the light outputting members, an optical path changing member which changes ... | 01/01/2008 |
| 7312906 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 12/25/2007 |
| 7310460 | Optical device A light controlling means includes a shutter member and an actuator. The shutter member is disposed in a slit and has a function to shut off signal light propagated in the light path of an optical fiber array. The actuator is constructed to drive and move the shutte... | 12/18/2007 |
| 7310461 | Optical routing apparatus and method An apparatus and method for routing optical signals in which at least one demultiplexer receives and demultiplexes an incoming wavelength-division-multiplexed optical signal into n individual channels. At least two multiplexers are used for assembling respective mul... | 12/18/2007 |
| 7305262 | Apparatus and method for acquiring oximetry and electrocardiogram signals A method and apparatus for acquiring pulse oximetry and electrocardiogram signals from an appendage of a patient. The apparatus can include a substrate that can be attached to the appendage of the patient, an emitter coupled to the substrate, a detector coupled to t... | 12/04/2007 |
| 7265903 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 09/04/2007 |
| 7266117 | System architecture for very fast ethernet blade The system of the present invention provides data transmission speeds at or in excess of 10 gigabits per second between one or more source devices and one or more destination devices. The system comprises a media access control (MAC) interface to facilitate receipt ... | 09/04/2007 |
| 7265882 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 09/04/2007 |
| 7260286 | Optical fiber coupling having liquid crystal adaptive coupler An optical fiber coupling, for example, an optical switch, for coupling a light source with a light-receiving end face of an optical waveguide comprises a lens for focusing a light beam emitted from the light source at a focal point on the light-receiving end face o... | 08/21/2007 |
| 7245798 | Apparatus for redirecting optical signals in free space Apparatus for redirecting a plurality of optical beams emanating from a respective plurality of optical transmitters arranged in a pattern along a first dimension and a second dimension. The apparatus comprises a plurality of refractive regions. Each refractive regi... | 07/17/2007 |
| 7242825 | Cantilever beam MEMS variable optical attenuator An improved cantilever beam optical switch design which provides the function of a variable optical attenuator (VOA). A small degree of intentional misalignment of the waveguide will create different levels of optical attenuation. By finely controlling the misalignm... | 07/10/2007 |
| 7239770 | Optical device An optical device enabling reducing device scale is constituted by M circulators (11a, 11b), (M being a natural number), a waveguide-type diffraction grating (12) including M first input/output waveguides (121a, 12... | 07/03/2007 |
| 7228025 | Thin film interleaver A thin film interleaver device is disclosed. The thin film interleaver includes thin film optics. The thin film(s) are formed such that they reflect one group of wavelengths while allowing a second group of wavelengths to pass through the thin film(s). The thin film... | 06/05/2007 |
| 7218815 | Athermal arrayed waveguide grating An athermal arrayed-waveguide grating is disclosed and includes an input waveguide for inputting two or more optical signals from one exterior side, a grating array for separating the optical signals into different wavelengths of light, a first slab, formed with two... | 05/15/2007 |
| 7215853 | Optical module formed on common substrate for branching an optical signal A collimator 111 for an input light, a collimator 112 for an output light, a collimator 113 for a branched light, a collimator 114 for an inserted light and a wavelength selecting filter 115 are provided on a common substrate 13... | 05/08/2007 |
| 7206283 | High-performance network switch The present invention provides a high-performance network switch. A digital switch has a plurality of blades coupled to a switching fabric via serial pipes. Serial link technology is used in the switching fabric. Each blade outputs serial data streams with in-band c... | 04/17/2007 |
| 7203427 | Redundant path all-optical regeneration, reshaping and wavelength conversion for enhanced yield A system, method and device for AO2R is presented. The AO2R system presented is redundant, containing multiple pathways for the input and output signals to travel. The system carries out both the regeneration and reshaping functions in the optical domain, and return... | 04/10/2007 |
| 7203194 | Method and system for encoding wide striped cells A system and method for encoding wide striped cells that carry packets of data across stripes. The method encodes an initial block of a first wide striped cell is encoded with initial cell encoding information, and distributes initial bytes of packet data into avail... | 04/10/2007 |
| 7187687 | Pipeline method and system for switching packets A switching device comprising one or more processors coupled to a media access control (MAC) interface and a memory structure for switching packets rapidly between one or more source devices and one or more destination devices. Packets are pipelined through a series... | 03/06/2007 |
| 7176589 | Electrical power distribution and communication system for an underwater cable An underwater cable arrangement includes systems and method for distributing and/or transferring power and/or data to internal devices and external devices disposed along an underwater cable. Under water coupling systems and underwater electrical devices may be used... | 02/13/2007 |
| 7167609 | Optical switch An optical switch has an input port, output ports, optical waveguides whose output path of an optical signal branch into two. A first stage optical switch section is provided in a branching portion of the optical waveguide, which switches a propagating path of an op... | 01/23/2007 |
| 7164817 | Optical switch and optical add/drop multiplexer using the same As a wavelength selection filter, a filter in which dielectric multilayered films are formed on a substrate, an optical fiber grating in which diffraction grating is formed in an optical fiber, and so on, can be used. As another optical demultiplexer 33, as d... | 01/16/2007 |
| 7162115 | Multiport wavelength-selective optical switch An multiport, multi-wavelength optical switch having and array of angular beam-directing devices employs an anamorphic optical system that transforms a beam corresponding to a given wavelength of a given multi-wavelength input channel into a beam, at a plane of the ... | 01/09/2007 |
| 7130505 | Optical performance monitor An optical performance monitor for accurate monitoring of the OSNR of a WDM optical signal is provided wherein a demultiplexing arrayed waveguide grating (AWG) having a plurality of Vernier input ports is disposed between an optical switch and a photodiode array cou... | 10/31/2006 |
| 7116858 | Optical switch elements An optical switch element, methods form making an optical switch element and optical switches containing the optical switch element. The optical switch element includes a housing containing a longitudinal channel therein having a channel axis defined along a length ... | 10/03/2006 |
| 7116855 | Optical shuttle system and method used in an optical switch An optical shuttle system for routing signals in a communications system that includes a terminal connected to a power source, a shuttle that includes waveguides used for routing the signals, and a beam connected to the terminal and the shuttle so that the beam susp... | 10/03/2006 |
| 7113662 | Optical filtering by using an add-drop node The present invention relates to a method using a node, a system comprising a node and a node for filtering signals in a wavelength division multiplexing (WDM) optical communications system, especially for re-configurably adding and dropping signals to and from an o... | 09/26/2006 |