Mark Stephen Feuer, Age 62Bergen Point, NJ

6614568, Sep 2, 2003

Jul 14, 1999

09/353205

Mark D. Feuer - Colts Neck NJ

ATT Corp. - New York NY

H04J 1402

359127, 359130, 385 24

A method and apparatus for providing wavelength-cyclic communication services. M wavelength channels are provided to a plurality of add/drop modules in the network, and each of the add/drop modules selects a distinct comb of wavelength channels for provision to a subscriber. The add/drop modules select a comb of wavelength channels such that each selected channel is separated by N wavelength channels from adjacent selected channels. Thus, each add/drop module can select M/N channels for a corresponding subscriber. A passive Fabry-Perot interferometer having controlled dispersion can function as a wavelength selector at each add/drop module. The Fabry-Perot interferometer can have two different materials having different dispersion properties provided in an interference cavity, thereby providing desired tunability characteristics for the interferometer.

6751372, Jun 15, 2004

Dec 27, 2001

10/026837

Mark D. Feuer - Colts Neck NJ
Nicholas J. Frigo - Red Bank NJ
Cedric F. Lam - Middletown NH

ATT Corp - New York NY

G02R 628

385 24, 385 25, 385 37, 398 83

A four-port wavelength-selective crossbar switch generates an add/drop wavelength signal from a wave division multiplexed (WDM) signal using a plurality of double-sided reflectors that selectively reflects a selected wavelength channel signal of the WDM signal through optical circulators to provide low crosstalk between the dropped and added wavelength signals. The switch also reduces the number of WDM MUX-DEMUX required to one half that compared to a traditional approach. Furthermore, the switch can be designed to be wavelength cyclic with individual free spectral ranges that can be independently set to either through or add/drop states.

7027733, Apr 11, 2006

Dec 27, 2001

10/026888

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US
Cedric F. Lam - Middletown NJ, US

AT&T Corp. - New York NY

H04J 14/00

398 72, 398 59, 398 66, 398 67, 398 68, 398 69, 398 70, 398 71, 398 79, 398 82, 398 83, 398 45, 398 48, 398 50, 398 58, 398 56

A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM signal is received from a hub node of the optical network, such as a unidirectional ring network or a bi-directional ring network. A four-port wavelength crossbar switch (4WCS) selectably switches selected wavelengths from the optical network to a modulator loop. The modulator loop includes a multicast modulator that modulates the selected plurality of wavelengths with the multicast data. Each modulated wavelength is then switched back to the optical network by the 4WCS switch, and sent to a plurality of subscriber nodes of the optical network. This architecture allows a facility provider to be physically separated from a content provider, and affords the flexibility of selectively delivering multicast content to individual subscribers.

7085454, Aug 1, 2006

Nov 10, 2004

10/985822

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US

AT&T Corp. - New York NY

G02B 6/26

385 50, 385 15, 385 39, 359333

A method for fabricating optical devices comprises the steps of preparing a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a second buried optical waveguide. The waveguides so formed may be straight or be curved along the surface of the wafer or curved by burying the waveguide at varying depth along its length. The second wafer is turned (flipped) and bonded to the first wafer in such a manner that the waveguides, for example, may form an optical coupler or may crossover one another and be in proximate relationship along a region of each. As a result, three dimensional optical devices are formed avoiding conventional techniques of layering on a single substrate wafer. Optical crossover angles may be reduced, for example, to thirty degrees from ninety degrees saving substrate real estate.

7164826, Jan 16, 2007

Jan 10, 2006

11/328529

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US

AT&T Corp. - New York NY

G02B 6/26

385 50, 385 15, 385 39

A method for fabricating optical devices comprises the steps of preparing a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a second buried optical waveguide. The waveguides so formed may be straight or be curved along the surface of the wafer or curved by burying the waveguide at varying depth along its length. The second wafer is turned (flipped) and bonded to the first wafer in such a manner that the waveguides, for example, may form an optical coupler or may crossover one another and be in proximate relationship along a region of each. As a result, three dimensional optical devices are formed avoiding conventional techniques of layering on a single substrate wafer. Optical crossover angles may be reduced, for example, to thirty degrees from ninety degrees saving substrate real estate. Recessed areas may be provided in one or the other substrate surface reducing crosstalk in a completed three dimensional crossover device.

7200303, Apr 3, 2007

Aug 31, 2005

11/215851

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US

G02B 6/26

385 39, 385 15, 359333

An optical device comprises a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a second buried optical waveguide. The waveguides so formed may be straight or curved along the surface of the wafer or curved by burying the waveguide at varying depth along its length. The second wafer is turned (flipped) and bonded to the first wafer in such a manner that the waveguides, for example, may form an optical coupler or may cross over one another and be in proximate relationship along a region of each. As a result, three dimensional optical devices are formed avoiding the convention techniques of layering on a single substrate wafer.

7366417, Apr 29, 2008

Jan 10, 2006

11/328782

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US
Cedric F. Lam - Middletown NJ, US

AT&T Corp. - New York NY

H04J 14/00

398 72, 398 59, 398 66, 398 67, 398 68, 398 69, 398 70, 398 71, 398 79, 398 82, 398 83, 398183, 398 76, 398 45, 398 48, 398 50, 398 56, 398 58, 398 98, 398 99, 398100, 385 24, 385 16, 385 17, 385 18, 385 37

A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM signal is received from a hub node of the optical network, such as a unidirectional ring network or a bi-directional ring network. A four-port wavelength crossbar switch (4WCS) selectably switches selected wavelengths from the optical network to a modulator loop. The modulator loop includes a multicast modulator that modulates the selected plurality of wavelengths with the multicast data. Each modulated wavelength is then switched back to the optical network by the 4WCS switch, and sent to a plurality of subscriber nodes of the optical network. This architecture allows a facility provider to be physically separated from a content provider, and affords the flexibility of selectively delivering multicast content to individual subscribers.

7437031, Oct 14, 2008

Feb 16, 2007

11/707681

Mark D. Feuer - Colts Neck NJ, US
Nicholas J. Frigo - Red Bank NJ, US

AT&T Corp. - New York NY

G02B 6/12

385 14, 385 15, 385 39, 385 50

A method for fabricating an optical device wherein the device comprises a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a second buried optical waveguide. The waveguides so formed may be straight or curved along the surface of the wafer or curved by burying the waveguide at varying depth along its length. The second wafer is turned (flipped) and bonded to the first wafer in such a manner that the waveguides, for example, may form an optical coupler or may cross over one another and be in proximate relationship along a region of each. As a result, three-dimensional optical devices are formed avoiding the convention techniques of layering on a single substrate wafer.