Patents Assigned to Lucent Technologies Inc. ("Lucent')
  • Self-Calibrating Integrated Photonic Circuit and Method of Control Thereof
    Publication number: 20090238557
    Abstract: A self-calibrating integrated photonic circuit and a method of controlling the same. In one embodiment, the circuit includes: (1) a substrate, (2) a laser located on the substrate and configured to produce source light at an output frequency, (3) a laser alignment sensor located on the substrate and including: (3a) a reference optical resonator configured to receive the source light, have a null proximate a predetermined center frequency and provide output light as a function of a relationship between the output frequency and the center frequency and (3b) a photodetector configured to provide an electrical signal of a magnitude that is based on the output light and (4) a calibration controller located on the substrate, coupled to the photodetector and configured to adjust the output frequency based on the magnitude.
    Type: Application
    Filed: March 18, 2008
    Publication date: September 24, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Young-Kai Chen, Mahmoud Rasras, Kun-Yii Tu
  • OPTICAL TRANSMISSION FIBER WITH THERMAL MANAGEMENT FOR HIGH POWER APPLICATIONS
    Publication number: 20090238526
    Abstract: An optical transmission fiber including a core having a first index of refraction, a cladding material located around the core and having a second index of refraction less than the first index of refraction, a first coating material located around a first portion of the cladding material and having a third index of refraction greater than the second index of refraction, and a second coating material located around a second portion of the cladding material and having a fourth index of refraction less than the second index of refraction.
    Type: Application
    Filed: October 13, 2008
    Publication date: September 24, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Leslie A. Reith, Eva M. Vogel
  • Nonlinear and Gain Optical Devices Formed in Metal Gratings
    Publication number: 20090225401
    Abstract: A nonlinear optical system comprises a metallic film having a first side and a second side. The nonlinear optical system further comprises a regular array of slits in the metallic film. The slits connect the first and second sides of the metallic film. The array is configured to selectively transmit through the metallic film light having frequencies of a selected frequency band. The nonlinear optical system still further comprises a nonlinear optical material situated within the slit.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Gang Chen, Ronen Rapaport
  • OPTICAL PATTERN RECOGNITION HAVING REDUCED SENSITIVITY TO WAVELENGTH INSTABILITY
    Publication number: 20090226183
    Abstract: In exemplary embodiments, all-optical pattern recognition for an optical input signal is achieved by wavelength-converting the input signal and then passively correlating the wavelength-converted signal based on a specified data pattern. By performing wavelength conversion using a CW laser signal having wavelength stability greater than that of the input signal, errors resulting from wavelength sensitivity of the passive correlator can be reduced. By performing both wavelength conversion and OOK-to-BPSK format conversion prior to the passive correlation, limitations in the number of available OOK patterns can be avoided. By performing the passive correlation in a bi-directional manner, feedback signal can be generated to control the operations of the passive correlator and/or the laser signal source(s).
    Type: Application
    Filed: October 18, 2007
    Publication date: September 10, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventor: Inuk Kang
  • METHOD AND APPARATUS FOR ALLOWING NON-IP BASED NETWORKS TO INTERACT WITH IPTV-BASED SYSTEMS
    Publication number: 20090219953
    Abstract: A method of allowing a non-IP-based network to interact with an IPTV-based network is provided. The method comprises: receiving an indication at an IPTV Mediation Application Server (IPTV Mediation AS) that a subscriber to IPTV service is watching television, wherein the television is connected to an IPTV set-top box (IPTV STB) in a home viewing network; receiving a call from a caller directed to a circuit-switched communication device of the subscriber; suspending normal call processing and giving control of the call to the IPTV Mediation AS; interacting with the home viewing network and sending instructions to the IPTV STB regarding a pop-up message to be played on the television; receiving instructions for handling the call at the IPTV Mediation AS; and sending the instructions for handling the call to a service switching point.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 3, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: David S. Benco, Mark A. Ristich
  • CMOS-COMPATIBLE TUNABLE MICROWAVE PHOTONIC BAND-STOP FILTER
    Publication number: 20090214223
    Abstract: According to one embodiment, a microwave photonic band-stop (MPBS) filter uses an electrical input signal to drive an optical Mach-Zehnder modulator. A modulated optical carrier produced by the modulator is applied to an optical filter having at least two tunable spectral attenuation bands that are located substantially symmetrically on either side of the carrier frequency. The resulting filtered optical signal is applied to an optical-to-electrical (O/E) converter to produce an electrical output signal.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 27, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Young-Kai Chen, Sanjay Patel, Mahmoud Rasras, Kun-Yii Tu
  • SUPERPOSITION TRANSMISSION AND DETECTION OF ACCESS AND BACKHAUL SIGNALS
    Publication number: 20090203310
    Abstract: According to one embodiment of the invention, a wireless communication system (WCS) has a wireless relay and a base station adapted to process wireless access traffic for one or more mobile terminals (MTs) and to process wireless backhaul traffic. The wireless relay is adapted to generate a superimposed signal having a backhaul component intended for the base station and an access component intended for one of the MTs. The wireless relay is further adapted to allocate power between the backhaul and access components based on signal propagation conditions between itself, the base station, and the MT to render the backhaul component decodable at the base station and the access component decodable at the MT.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 13, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Angel Lozano, Reinaldo Valenzuela
  • METHOD AND APPARATUS FOR VIRTUAL WI-FI SERVICE WITH AUTHENTICATION AND ACCOUNTING CONTROL
    Publication number: 20090199281
    Abstract: A method of providing virtual Wi-Fi service with accounting and authentication control via a virtual Wi-Fi access network is provided. The method comprises: connecting a subscriber to the virtual Wi-Fi access network, wherein the virtual Wi-Fi access network comprises a plurality of individual Wi-Fi access points in communication with at least one virtual Wi-Fi access server; prompting the subscriber for an account ID and password; performing subscriber authentication at the virtual Wi-Fi access server; where the subscriber has been authenticated, establishing a Wi-Fi session for the subscriber in the virtual Wi-Fi access network and applying an accounting function to the Wi-Fi session; and notifying the virtual Wi-Fi access server when the subscriber exits from the virtual Wi-Fi network.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Yigang Cai, Suzann Hua
  • METHOD AND APPARATUS FOR PROVIDING VIRTUAL WI-FI ACCESS
    Publication number: 20090198808
    Abstract: A method of providing virtual Wi-Fi service via a virtual Wi-Fi access network is provided. The method comprises: receiving data from an owner of an individual Wi-Fi access point; updating the owner of the Wi-Fi access point with access IDs, passwords, and security keys for a plurality of virtual Wi-Fi access subscribers; receiving subscriber data from a virtual Wi-Fi access subscriber; providing the subscriber with virtual Wi-Fi access log-in information; connecting the subscriber to the virtual Wi-Fi access network, wherein the virtual Wi-Fi access network comprises a plurality of individual Wi-Fi access points in communication with at least one virtual Wi-Fi access server; and billing the subscriber for virtual Wi-Fi access.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Yigang Cai, Suzann Hua
  • PLASMONIC DEVICE FOR MODULATION AND AMPLIFICATION OF PLASMONIC SIGNALS
    Publication number: 20090195782
    Abstract: According to one embodiment of the invention, a plasmonic device has a beam splitter adapted to split a surface-plasmon (SP) input beam into first and second SP beams and direct them along first and second propagation paths, respectively. One of the propagation paths has a plasmonic-beam interaction region adapted to controllably change the phase of the corresponding split beam within that interaction region in response to an SP control signal applied thereto. The plasmonic device further has an SP beam mixer adapted to receive the first and second beams from their respective propagation paths and to mix them to produce an SP output signal. In various configurations, the plasmonic device can operate as a plasmonic-signal amplifier, a plasmonic-beam router, a 1×2 plasmonic-beam switch, and/or a plasmonic modulator.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Girsh Blumberg, Benard Yurke
  • CMOS-COMPATIBLE POLARIZATION-DIVERSE TUNABLE OPTICAL BANDPASS FILTER
    Publication number: 20090180729
    Abstract: According to one embodiment, an optical filter has a polarization rotator and two instances of an optical bandpass filter (OBPF). The first instance of the OBPF processes a TE-polarized component of an optical input signal to produce a first filtered signal. The polarization rotator then transforms the TE polarization of the first filtered signal into the TM polarization. The polarization rotator also transforms the polarization of a TM-polarized component of the optical input signal into the TE polarization. The second instance of the OBPF processes the resulting TE-polarized signal to produce a second filtered signal. The first and second filtered signals having TM and TE polarizations, respectively, are then combined to produce a filtered output signal.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 16, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventor: Mahmoud Rasras
  • FRONT PROJECTION SCREEN, A METHOD OF CONSTRUCTING THE SAME AND A FRONT PROJECTION SYSTEM INCLUDING THE SAME
    Publication number: 20090168026
    Abstract: An apparatus, a method of fabricating a front projection screen and a front projection system is provided. In one embodiment, the apparatus includes a front projection screen including an image surface and a selective transmission layer fixed to and covering the surface. The surface is configured to diffusely reflect light incident thereon and the selective transmission layer is configured to allow projected light from a laser source to illuminate the surface and block ambient light incident thereon. The laser projected light has a wavelength within a designated bandwidth.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: Lucent Technologies Inc.
    Inventor: Gang Chen
  • PLASMONIC OPTICS FOR PLASMONIC CIRCUITS
    Publication number: 20090142016
    Abstract: According to one embodiment, a circuit element for a plasmonic circuit is formed using a dielectric layer having two portions, each characterized by a different electric permittivity. The dielectric layer is adjacent to a metal layer, with the interface between the layers defining a conduit for propagation of surface plasmons. A dielectric boundary between the two portions of the dielectric layer is shaped to enable the circuit element to change one or more of propagation direction, cross-section, spectral composition, and intensity distribution for a beam of surface plasmons received by the circuit element.
    Type: Application
    Filed: December 3, 2007
    Publication date: June 4, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Vladimir A. Aksyuk, Girsh Blumberg
  • OPTICAL SIGNAL SYNCHRONIZER
    Publication number: 20090129780
    Abstract: One embodiment of the invention provides an optical signal synchronizer having a plurality of optical channel synchronizers. Each optical channel synchronizer receives a respective input wavelength division multiplexing (WDM) signal and processes it to produce a corresponding output WDM signal, in which optical data packets corresponding to different carrier wavelengths are synchronized to each other regardless of the presence or absence of such synchronization in the input WDM signal. The optical signal synchronizer further has an optical multiplex synchronizer that receives the output WDM signals from the optical channel synchronizers and synchronizes them to each other and to an external reference clock without demultiplexing any of them into individual WDM components.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • PROGRAMMABLE OPTICAL ARRAY
    Publication number: 20090129723
    Abstract: An apparatus having a topology that allows building complicated optical programmable arrays useful for manipulating the phase and/or amplitude of an optical signal. Sophisticated filtering and other optical signal processing functionality can be programmed into the array after a chip containing the array has been fabricated. This programming capability is analogous to that of electronic field programmable gate arrays (FPGA's). Apparatus described herein will provide a powerful tool for processing optical signals or very broadband electrical signals.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Young-Kai CHEN, Andreas LEVEN, Mahmoud RASRAS, Kun-Yii TU
  • MULTIPLEX DELAY UNIT
    Publication number: 20090129779
    Abstract: According to one embodiment, a multiplex delay unit comprises an optical all-pass filter (OAPF) adapted to apply continuously tunable group delay to a wavelength division multiplexing (WDM) signal so that all of its WDM components are delayed by substantially the same delay time. The OAPF has a free spectral range (FSR) that matches spectral separation between carrier wavelengths of the WDM signal. Advantageously, an optical multiplex synchronizer suitable for feeding a synchronous optical switch fabric can be implemented as an integrated waveguide circuit using a plurality of such multiplex delay units.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Pietro Arturo Bernasconi, Jane D. LeGrange
  • TUNABLE OPTICAL DISPERSION COMPENSATING APPARATUS
    Publication number: 20090116789
    Abstract: A tunable optical dispersion compensator (TODC) having a silica arrayed-waveguide grating (AWG) directly coupled at its input to a Mach-Zehnder interferometer device and at its output to a polymer thermo-optic lens.
    Type: Application
    Filed: March 24, 2007
    Publication date: May 7, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventor: Christopher DOERR
  • Ridge and mesa optical waveguides
    Publication number: 20090111201
    Abstract: Apparatus including: a substrate layer having a substantially planar top surface; an optically conductive peak located and elongated on, and spanning a first thickness measured in a direction generally away from, the top surface; the optically conductive peak having first and second lateral walls each including distal and proximal lateral wall portions, the proximal lateral wall portions intersecting the top surface; and first and second sidewall layers located on the distal lateral wall portions, the sidewall layers not intersecting the top surface and spanning a second thickness that is less than the first thickness measured in the same direction.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 30, 2009
    Applicant: Lucent Technologies Inc.
    Inventors: Young-Kai Chen, Andreas Bertold Leven, Yang Yang
  • SPECKLE REDUCTION USING A TUNABLE LIQUID LENS
    Publication number: 20090096999
    Abstract: A representative embodiment of the invention provides a projection system having a laser source that incorporates a tunable liquid lens and a spatial light modulator adapted to modulate light generated by the laser source to project an image on a viewing screen. The tunable liquid lens is adapted to vary focal length, alignment or position with respect to an optical element that is external to the lens, ability to diffuse light, and/or polarization rotation angle.
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Robert E. Frahm, Omar D. Lopez
  • HORIZONTAL CHASSIS HAVING FRONT TO BACK AIRFLOW
    Publication number: 20090097204
    Abstract: Provided is an apparatus, a system, and a method for operating the same. The apparatus, in one embodiment, includes a chassis having a front configured to accept one or more circuit boards, a back, and first and second sides. The apparatus, in this embodiment, further includes one or more slots located within the chassis, each slot configured to receive one of the circuit boards at an angle with respect to the first and second sides. The slots, in this embodiment, at least partially define a first plenum opening to the front and a second plenum opening to the back. The apparatus additionally includes a fan assembly coupled to one of the first plenum or the second plenum.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Applicant: Lucent Technologies Inc.
    Inventor: Charles C. Byers