| Patent Number |
Title Of Patent |
Date Issued |
| 7359597 |
Birefringence control in planar optical waveguides |
April 15, 2008 |
| A planar optical waveguide has a set of diffractive elements and confines propagating optical signals in at least one transverse spatial dimension. Each diffractive element set routes, between input and output ports, a corresponding diffracted portion of an input optical signal propagati |
| 7349599 |
Etched surface gratings fabricated using computed interference between simulated optical signals |
March 25, 2008 |
| A method comprises: formulating a design input and output optical signals; computing an interference pattern between the simulated input and output optical signals; computationally deriving a diffractive element arrangement from the computed interference pattern; forming a mask patte |
| 7341189 |
Spectrally-encoded labeling and reading |
March 11, 2008 |
| A spectrally-encoded label comprises a spectrally-selective optical element having a label spectral signature. The label spectral signature is determined according to a spectral-encoding scheme so as to represent predetermined label information within the spectral encoding scheme. The |
| 7333692 |
Optical waveguide assembled with an optical subunit having a diffractive element set and an opti |
February 19, 2008 |
| An apparatus comprises an optical transmission element, a diffractive element set formed in or on the transmission element, and an optical component. The diffractive element set is positioned to enable spatial overlap of diffractive elements and an evanescent optical signal propagati |
| 7330614 |
Integrated optical spectrometer incorporating sets of diffractive elements |
February 12, 2008 |
| An exemplary optical apparatus comprises: an optical element having multiple sets of diffractive elements; and a photodetector. The diffractive elements of each set are collectively arranged so as to comprise corresponding spectral and spatial transformation information for each set. |
| 7327908 |
Integrated optical sensor incorporating sets of diffractive elements |
February 5, 2008 |
| An optical sensor comprises an optical element having diffractive elements and a sensing region. The diffractive elements are collectively arranged to comprise spectral and spatial transformation information and to transform an input optical signal into an output optical signal according |
| 7292755 |
Optical resonator formed in a planar optical waveguide with a distributed optical structure |
November 6, 2007 |
| An optical apparatus comprises a planar optical waveguide having at least two reflectors. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical signals propagating therein, and the reflectors define an optical resonator that supports at |
| 7286732 |
Distributed optical structures designed by computed interference between simulated optical signa |
October 23, 2007 |
| An optical apparatus comprises a planar optical waveguide and at least one set of diffractive elements formed in or on the waveguide. The waveguide is arranged to confine propagating optical signals in at least one transverse dimension. The diffractive element set collectively exhibits a |
| 7260290 |
Distributed optical structures exhibiting reduced optical loss |
August 21, 2007 |
| An optical waveguide includes a set of diffractive elements. The diffractive element set routes within the waveguide a diffracted portion of an input optical signal between input and output optical ports. The input optical signal is successively incident on the diffractive elements. |
| 7224867 |
Holographic spectral filter |
May 29, 2007 |
| Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and transmitting the di |
| 7224855 |
Optical multiplexing device |
May 29, 2007 |
| An optical multiplexing device includes an optical element having at least one set of diffractive elements, and an optical reflector. The reflector routes, between first and second optical ports, that portion of an optical signal transmitted by the diffractive element set. The diffra |
| 7203401 |
Multiple wavelength optical source |
April 10, 2007 |
| A planar optical waveguide is formed having sets of locking diffractive elements and means for routing optical signals. Lasers are positioned to launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element sets, which route fr |
| 7203151 |
Spatially-spectrally swept optical memories and addressing methods |
April 10, 2007 |
| An optical data storage system directs a reference beam and a data beam to a storage material having an inhomogeneous linewidth. The data beam is modulated to contain data to be stored in the storage material. The reference beam and the data beam illuminate storage cells of the storage |
| 7194164 |
Distributed optical structures with improved diffraction efficiency and/or improved optical coup |
March 20, 2007 |
| An optical apparatus comprises a planar optical waveguide having at least one set of diffractive elements and confining in at least one transverse spatial dimension optical signals propagating therein. Each diffractive element set routes, between corresponding input and output optical po |
| 7190859 |
Distributed optical structures in a planar waveguide coupling in-plane and out-of-plane optical |
March 13, 2007 |
| A slab optical waveguide confines in one transverse dimension optical signals propagating in two dimensions therein, and has a set of diffractive elements collectively arranged so as to exhibit positional variation in amplitude, optical separation, or spatial phase. The diffractive e |
| 7190858 |
Optical time delay apparatus incorporating diffractive element sets |
March 13, 2007 |
| An optical time delay apparatus comprises: a multi-wavelength optical source; a diffractive element set imparting a wavelength-dependent delay on signals routed from the source to a 1.times.N optical switch; and N diffractive element sets routing signals from the 1.times.N switch to an |
| 7190856 |
Reconfigurable optical add-drop multiplexer incorporating sets of diffractive elements |
March 13, 2007 |
| A reconfigurable add-drop multiplexer (R-OADM) comprises an array of channel waveguides coupling two groups of diffractive element sets on a slab waveguide. The channel waveguides include switchable reflectors or are coupled to other channel waveguides by optical switches. Switching a |
| 7181103 |
Optical interconnect structures incorporating sets of diffractive elements |
February 20, 2007 |
| An optical apparatus comprises an optical interconnect structure defining one or more optical source and receiver ports and one or more interconnect optical signal pathways connecting corresponding optical signal source and receiver ports. The optical interconnect structure comprises |
| 7123794 |
Distributed optical structures designed by computed interference between simulated optical signa |
October 17, 2006 |
| A method comprises: formulating simulated design input and output optical signals propagating from/to respective designed optical input and output ports as optical beams substantially confined by a planar optical waveguide; computing an interference pattern between the simulated input |
| 7120334 |
Optical resonator formed in a planar optical waveguide with distributed optical structures |
October 10, 2006 |
| An optical apparatus comprises a planar optical waveguide having at least two sets of diffractive elements. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical signals propagating therein. The two diffractive element sets define an |
| 7116453 |
Optical processor |
October 3, 2006 |
| Method and apparatus are disclosed for optical packet decoding, waveform generation, and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed holographic structure is disclosed. A configurable programmed holographic structure may be |
| 7065298 |
Code-based optical networks, methods, and apparatus |
June 20, 2006 |
| Optical communication systems include a central station that encodes data transmitted to multiplexing (mux) stations or user stations. The central station also decodes data received from the mux stations or user stations. Encoding and decoding are performed using codes, such as compo |
| 7063260 |
Spectrally-encoded labeling and reading |
June 20, 2006 |
| A spectrally-encoded label comprises a spectrally-selective optical element having a label spectral signature. The label spectral signature is determined according to a spectral-encoding scheme so as to represent predetermined label information within the spectral encoding scheme. The |
| 7062128 |
Holographic spectral filter |
June 13, 2006 |
| Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and transmitting the di |
| 7054517 |
Multiple-wavelength optical source |
May 30, 2006 |
| An apparatus comprises: a planar optical waveguide having sets of locking diffractive elements and means for routing optical signals; and corresponding lasers. Lasers launch signals into the planar waveguide that are successively incident on elements of the locking diffractive elemen |
| 7009743 |
Optical processor |
March 7, 2006 |
| Method and apparatus are disclosed for optical packet decoding, waveform generation and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed holographic structure is disclosed. A configurable programmed holographic structure may be |
| 6993223 |
Multiple distributed optical structures in a single optical element |
January 31, 2006 |
| An optical apparatus comprises an optical element having at least two sets of diffractive elements, each diffractive element comprising at least one diffracting region thereof. At least one diffractive element set collectively routes, between a corresponding input optical port and a |
| 6990276 |
Optical waveform recognition and/or generation and optical switching |
January 24, 2006 |
| A planar optical waveguide has sets of diffractive elements, each routing between input and output optical ports diffracted portions of an input optical signal. The diffractive elements are arranged so that the impulse response function of the diffractive element set comprises a referenc |
| 6987911 |
Multimode planar waveguide spectral filter |
January 17, 2006 |
| A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other dimensions therein. The waveguide supports multiple transverse modes. Each diffractive |
| 6985656 |
Temperature-compensated planar waveguide optical apparatus |
January 10, 2006 |
| An optical apparatus (spectral filter, temporal encoder, or other) comprises a planar optical waveguide having at least one set of diffractive elements. Each diffractive element set routes by diffraction therefrom a portion of the optical signal propagating in the planar waveguide. T |
| 6965716 |
Amplitude and phase control in distributed optical structures |
November 15, 2005 |
| A distributed optical structure comprises a set of diffractive elements. Individual diffractive element transfer functions collectively yield an overall transfer function between entrance and exit ports. Diffractive elements are defined relative to virtual contours and include diffractin |
| 6965464 |
Optical processor |
November 15, 2005 |
| Method and apparatus are disclosed for optical packet decoding, waveform generation and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed holographic structure is disclosed. A configurable programmed holographic structure may be |
| 6961491 |
Optical structures distributed among multiple optical waveguides |
November 1, 2005 |
| An optical apparatus comprises an optical element having at least one set of diffractive elements and multiple channel optical waveguides. Diffractive elements of each set are distributed among diffractive element subsets corresponding to each of the multiple channel waveguides. Each |
| 6961296 |
Spatially-spectrally swept optical memories and addressing methods |
November 1, 2005 |
| An optical data storage system directs a reference beam and a data beam to a storage material having an inhomogeneous linewidth. The data beam is modulated to contain data to be stored in the storage material. The reference beam and the data beam illuminate storage cells of the storage |
| 6859318 |
Method for forming a holographic spectral filter |
February 22, 2005 |
| Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and transmitting the di |
| 6829417 |
Amplitude and phase control in distributed optical structures |
December 7, 2004 |
| A distributed optical structure comprises a set of diffractive elements. Individual diffractive element transfer functions collectively yield an overall transfer function between entrance and exit ports. Diffractive elements are defined relative to virtual contours and include diffractin |
| 6823115 |
Optical structures distributed among multiple optical waveguides |
November 23, 2004 |
| An optical apparatus comprises an optical element having at least one set of diffractive elements and multiple channel optical waveguides. Diffractive elements of each set are distributed among diffractive element subsets corresponding to each of the multiple channel waveguides. Each |
| 6819460 |
Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering |
November 16, 2004 |
| Apparatus and methods are disclosed for spatially routing an optical pulse (data pulse) of an electromagnetic radiation and containing a specific address temporal profile and possibly additional data. Routing generally involves a unit of active material that is programmed using one or mo |
| 6778102 |
Communication system and apparatus with synchronous orthogonal coding |
August 17, 2004 |
| Code-multiplexed communication systems, apparatus, and methods include coders that encode and decode data streams with synchronous, substantially orthogonal codes. Code-multiplexed communications systems encode data signals with such codes to control levels of decoding artifacts such as |
| 6678429 |
Amplitude and phase control in distributed optical structures |
January 13, 2004 |
| An optical element is provided with one or more sets of diffractive elements. Individual diffractive element transfer functions collectively yield corresponding overall transfer functions between corresponding entrance and exit ports. Diffractive elements are defined by contours that |
| 6618342 |
Spatially-spectrally swept optical memories and addressing methods |
September 9, 2003 |
| An optical data storage system directs a reference beam and a data beam to a storage material having an inhomogeneous linewidth. The data beam is modulated to contain data to be stored in the storage material. The reference beam and the data beam illuminate storage cells of the storage |
| 6313771 |
Codes, methods, and apparatus for optical encoding and decoding |
November 6, 2001 |
| Encoders and decoders for applying composite codes to optical data signals include encoders and decoders for applying both subcodes and supercodes. The subcodes have a duration selected as less than or equal to an interchip duration or a chip duration of the supercodes. The encoders and |
| 6034976 |
Method and apparatus for laser frequency stabilization |
March 7, 2000 |
| A method and apparatus for laser frequency stabilization and precise laser frequency tuning comprises splitting a laser beam into two beam portions and recombining the two portions after they traverse differing optical distances. The thus-processed combined beam exhibits a time variation |
| 5812318 |
Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering |
September 22, 1998 |
| Apparatus and methods are disclosed for spatially routing an optical pulse (data pulse) of an electromagnetic radiation and containing a specific address temporal profile and possibly additional data. Routing generally involves a unit of active material that is programmed using one or mo |
| 5276637 |
Swept-carrier frequency selective optical memory and method |
January 4, 1994 |
| Data storage methods and apparatus are disclosed that utilize a swept-carrier optical approach with an inhomogeneously broadened absorber material having multiple special storage cells. Data are encoded on a data pulse by appropriately modulating the data pulse. Data storage in a sto |
| 4670854 |
Optical cross-correlation and convolution apparatus |
June 2, 1987 |
| Cross-correlation or convolution or a succession of such operations is performed by exposing an inhomogeneously broadened material to optical radiation pulses modulated in accordance with the information to be cross-correlated or convoluted and detecting the resulting emitted radiati |
| 4459682 |
Time domain data storage |
July 10, 1984 |
| A frequency selective optical data computer memory apparatus and method, which stores and accesses time modulated data in discrete spatial locations of an optically absorbing material providing a temporary, permanent and erasable, or permanent and nonerasable data storage. |
