Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7991290 | Optical prism and optical transceiver module for optical communications To provide an optical transceiver module comprising an optical prism for optical communications which has mounting portions, a light emitting portion, light receiving portions, a substrate and a sub-mount that are used as the basis of the optical transceiver module,... | 08/02/2011 |
| 7415210 | Bidirectional optical signal multiplexer/demultiplexer The optical signal multiplexer/demultiplexer of the invention is characterized by incorporating a bidirectional optical transceiver which is capable of using individual channels working in a transmitting and receiving modes simultaneously. The device consists of a n... | 08/19/2008 |
| 7394986 | Flat top optical filtering component The invention relates to wavelength-selective optical filters for allowing light of a narrow optical spectral band, centered around a wavelength (λc) to pass through them, while reflecting the wavelengths lying outside this band. According to the inventi... | 07/01/2008 |
| 7389050 | Wavelength multiplexer/demultiplexing device For use in combining and/or splitting a 3-wavelength multiplexed light, in which if central wavelengths of the three bands are denoted as λ1, λ2 and λ3, in a relation that 0.92≦λ2/λ1≦1.08, 0.20≦λ3/λ1≦0.92 or 1.08≦λ3/λ1≦5.00, the wavelength multi... | 06/17/2008 |
| 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 broad band incident optical wave from one stage to another, ... | 06/03/2008 |
| 7362931 | Optical conversion device for shared FTTH distribution network An optical conversion device for a shared FTTH distribution network including first and second optical fibers and an optical processing circuit. The optical processing circuit has an input for receiving a first optical analog signal carried by the first optical fibe... | 04/22/2008 |
| 7330622 | Laminated optical waveguide film, method of producing the same, and optical waveguide module The invention provides a laminated optical waveguide film in which a plurality of waveguide cores are formed, and a plurality of end surfaces at which the waveguide cores are exposed are formed, wherein, among the plurality of end surfaces, a first end surface has w... | 02/12/2008 |
| 7289737 | Communication optical system and free-space optics communication apparatus A communication optical system having a compact structure and capable of preventing crosstalk is disclosed. The communication optical system includes a light source, a light-receiving element and a beam-splitting member. The beam-splitting member performs one of tra... | 10/30/2007 |
| 7286730 | Optical switch having angle tuning elements and multiple-fiber collimators An optical switch with a compact form factor includes a multiple-fiber collimator and an angle tuning element for deflecting an optical beam from an input fiber into one of at least two output fibers. The angle tuning element may be provided between a pair of coaxia... | 10/23/2007 |
| 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 |
| 7215885 | Wavelength division element and optical module A wavelength division element includes a first filter and a second filter. The first filter has incident angle-to-transmission wavelength characteristics and separates multiplexed lights in a plurality of wavelength bands into first lights that are in a first wavele... | 05/08/2007 |
| 7177493 | Programmable optical add/drop multiplexer A multi-channel optical switching system particularly usable as a programmable optical add/drop multiplexer (POADM) in a multi-wavelength communication system. The switching system uses a thin film optical demux/mux that separates a multi-channel optical signal into... | 02/13/2007 |
| 7164859 | Free-space dynamic wavelength routing systems with interleaved channels for enhanced performance A novel wavelength routing apparatus is disclosed, which uses a diffraction grating to separate a multi-wavelength optical signal from an input port into multiple spectral channels; a channel-interleaving assembly (e.g., an array of prisms) to interleave the spectra... | 01/16/2007 |
| 7145727 | Unpolarized beam splitter having polarization-independent phase difference when used as an interferometer Beam splitter designs for interferometers provide a phase difference between the two resulting interference beams that are independent of the polarization status of the incident beam. The polarization independent phase coating is achieved by making the internal beam... | 12/05/2006 |
| 7136588 | Apparatus and method for optical add/drop multiplexing In one aspect of the invention, an apparatus operable to facilitate add/drop multiplexing of optical signals includes an input operable to receive an input optical signal and an added optical signal, the input operable to generate a first and a second copy of the in... | 11/14/2006 |
| 7126740 | Multifunctional optical device having a spatial light modulator with an array of micromirrors A reconfigurable multifunctional optical device has an optical arrangement for receiving an optical signal, each having optical bands or channels, and a spatial light modulator for reflecting the at least one optical signal provided thereon. The optical arrangement ... | 10/24/2006 |
| 7076132 | Optical devices and methods A fiber optic device comprises an optical lens element having a focal length greater than 2 mm, and an optical signal source or receiver mounted at the focal plane of the optical lens element and operative to communicate optical signals with a selectively transparen... | 07/11/2006 |
| 7075705 | Method for wavelength-selective mixing and/or distribution of polychromatic light A method for wavelength-selective mixing and/or distribution of polychromatic light. When mixing polychromatic light, lights having only one wavelength are successively fed to each member of a selective chain to form a partial spectrum, and when distributing chromat... | 07/11/2006 |
| 7068934 | Optical interconnect An optical interconnect comprises an input configured to receive light of a plurality of light wavelengths and a plurality of holographic optical elements. Each element configured to reflect one out of the plurality of light wavelengths and allowing others of the pl... | 06/27/2006 |
| 7058257 | Miniature WDM add/drop multiplexer and method of manufacture thereof A miniature WDM add/drop multiplexer and its manufacture is described. The device has a plurality of wavelength-dependent filters in the form of thin-film filters mounted to a core frame with the end sections of the input/output optical fiber and other optical fiber... | 06/06/2006 |
| 7054561 | Reduction of polarization-dependent loss from grating used in double-pass configuration A wavelength router receives light having a plurality of spectral bands at an input port. Subsets of these spectral bands are directed to output ports. The wavelength router includes an optical train and a routing mechanism. The optical train is disposed between the... | 05/30/2006 |
| 7050234 | Lossless beam combination in a dual fiber collimator using a polarizing beamsplitter A compact, in-line polarization combiner uses a folded, reflective optical path from a first fiber to a second fiber. The combiner includes first and second fibers at one end of an in-line package, and a third fiber at the other end of the in-line package. A first p... | 05/23/2006 |
| 7035549 | Interconnecting circuit boards using free space optics In an electronic device, plural circuit boards are plugged into respective connectors, or sockets, in a common backplane circuit board. The backplane maintains the flat circuit boards in fixed relation to one another. Each circuit board is provided with a respective... | 04/25/2006 |
| 7031060 | Non-moving parts add/drop device The instant invention provides an add/drop device including a wavelength filter, a quarter waveplate disposed on either side of the wavelength filter, and a polarizing beamsplitter disposed on either side of the quarter waveplates. Each polarizing beamsplitter has a... | 04/18/2006 |
| 6993260 | Interconnecting processing units of a stored program controlled system using free space optics Internal communication signals in a stored program controlled system comprising a plurality of units configured to process signals are provided by a free space optical beam line which is proximal to all of the plurality of units. The free space beam line is configur... | 01/31/2006 |
| 6954301 | Low-voltage electromechanical device including a tiltable microplatform, method of tilting same, array of such devices and method of setting dimple-to-substrate spacing A low-voltage electromechanical device including a tiltable microplatform, method of tilting same and array of such devices are provided. The tiltable or steerable microplatform utilizes a bent-beam actuator to achieve large tilting angles with low actuation voltage... | 10/11/2005 |
| 6947671 | Optical link module, optical interconnection method, information processor including the optical link module, signal transfer method, prism and method of manufacturing the prism An optical link module of the present invention for connecting light beams by deflection and including light-emitting devices arranged in a planar manner; an optical fiber bundle that is an optical waveguide for receiving the light beams from the light-emitting devi... | 09/20/2005 |
| 6945711 | Multiplexer with a dense wavelength division multiplexing function This invention relates to a multiplexer with a DWDM function, mainly comprising two modules, and an optic fiber is linked between said two modules, in which several filters and reflection mirrors, inclined slabs, laser diodes, receiver, and optical detectors detecti... | 09/20/2005 |
| 6941072 | Compact optical multiplexer/demultiplexer The invention relates to wavelength division multiplexing (WDM) and demultiplexing of optical signals using optical filters in free space. To minimize dispersion, the present invention uses relatively small angles of incidence. To avoid the need for a large package,... | 09/06/2005 |
| 6941073 | East-west separable ROADM An East-West separable ROADM particularly usable as a programmable N×M optical add/drop multiplexer with an efficient pass through of optical channels in a multi-wavelength communication system. The East-West separable ROADM uses a grating that separates multi-chan... | 09/06/2005 |
| 6941047 | System and method for collimating and redirecting beams in a fiber optic system A connector to an optical fiber comprises a prism, a ferrule and an aspheric lens. The prism includes a triangular wedge element having a first surface, a second surface and a base. The ferrule guides the optical fiber so as to contact the optical fiber with the fir... | 09/06/2005 |
| 6934086 | Optical component and compact wavelength locking arrangement including such a component An optical component in the form of a right angled triangular prism having a first side, a second side orthogonal to the first side, and a third side generally inclined to the first and second sides to reflect optical radiation incoming from the first side towards t... | 08/23/2005 |
| 6898377 | Method and apparatus for calibration of light-modulating array One embodiment disclosed relates to a method for calibrating an array of light-modulating elements. The method includes illuminating the array of elements, modulating an intensity of light diffracted by the elements over a modulation range, and measuring the modulat... | 05/24/2005 |
| 6882775 | Apparatus and method for multiplexing and de-multiplexing optical signals employing a anamorphic beams and diffraction gratings An optical multiplexing/demultiplexing apparatus includes: an optical fiber; a collimator optically coupled to the optical fiber; at least one anamorphic pair of prisms optically coupled to the collimator at a side opposite to the optical fiber; a diffraction gratin... | 04/19/2005 |
| 6871022 | Cascaded optical multiplexer Methods and apparatus for multiplexing and demultiplexing optical signals. An interleaver having a modified Mach-Zehnder interferometer as a first stage is used as a wavelength division multiplexer. This first stage is combined with one or more cascaded stages, each... | 03/22/2005 |
| 6792181 | Wavelength-multiplexing bidirectional optical transmission module A wavelength multiplexing bidirectional optical transmission module includes a transparent plate having first and second reflection surfaces opposing each other, a diffraction grating formed on a part of one of the first and second reflection surfaces and photoelect... | 09/14/2004 |
| 6751415 | Reduction of polarization-dependent loss from grating used in double-pass configuration A wavelength router is provided for receiving, at an input port, light having a plurality of spectral bands and directing some of those spectral bands to various output ports. The wavelength router includes an optical arrangement configured to provide optical paths ... | 06/15/2004 |
| 6741813 | Interference-based DWDM optical interleaver using beam splitting and selective phase shifting and re-combining An interleaver comprises a serial array of optical elements to which a multichannel, continuous spectrum, composite signal is input and two multichannel, non-continuous spectrum, composite signals are output. Two embodiments are disclosed. One such embodiment provid... | 05/25/2004 |
| 6728488 | Optical systems employing anamorphic beams and diffraction gratings An optical device includes: a collimator; at least one anamorphic pair of prisms optically coupled to the collimator; a diffraction grating optically coupled to the at least one anamorphic pair of prisms at a side opposite to the collimator; and a focusing lens opti... | 04/27/2004 |
| 6718082 | Solid-State optical wavelength switches The present invention provides an improved optical wavelength switch in which no mechanical movement is required to direct optical pathways between several fiber ports. The inventive three-fiber port device divides incoming optical signals into two subsets of spectr... | 04/06/2004 |
