Michael M Tseytlin

US Patent:

7167651, Jan 23, 2007

Filed:

Sep 26, 2001

Appl. No.:

09/962243

Inventors:

Isaac Shpantzer - Bethesda MD, US
Michael Tseytlin - Bethesda MD, US
Yaakov Achiam - Rockville MD, US
Aviv Salamon - Washington DC, US
Israel Smilanski - Rockville MD, US
Olga Ritterbush - Rockville MD, US
Pak Shing Cho - Gaithersburg MD, US
Li Guoliang - North Potomac MD, US
Jacob Khurgin - Baltimore MD, US
Yehouda Meiman - Rishon Letzion, IL
Alper Demir - Jersey City NJ, US
Peter Feldman - Short Hills NJ, US
Peter Kinget - Summit NJ, US
Nagendra Krishnapura - Hoboken NJ, US
Jaijeet Roychowdhury - Minneapolis MN, US
Joseph Schwarzwalder - Gaithersburg MD, US
Charles Sciabarra - Ellicott City MD, US

Assignee:

CeLight, Inc. - Silver Spring MD

International Classification:

H04J 4/00
H04B 10/00
H04B 10/04
H04B 10/06

US Classification:

398 77, 398 74, 398152, 398184, 398205

Abstract:

A system for optical communication forms a family of orthogonal optical codes modulated by a data stream. The orthogonal codes are formed by creating a stream of evenly spaced-apart pulses using a pulse spreader circuit and modulating the pulses in amplitude and/or phase to form a family of orthogonal optical code words, each representing a symbol. A spreader calibration circuit is used to ensure accurate timing and modulation. Each code word is further modulated by a predetermined number of data bits. The data modulation scheme splits a code word into H and V components, and further processes the components prior to modulation with data, followed by recombining with a polarization beam combiner. The data-modulated code word is then sent, along with others to receiver. The received signal is detected and demodulated with the help of a symbol synchronization unit which establishes the beginning and end of the code words.

US Patent:

7272271, Sep 18, 2007

Filed:

Jul 2, 2003

Appl. No.:

10/613772

Inventors:

Arkady Kaplan - Rockville MD, US
Yaakov Achiam - Rockville MD, US
Arthur Greenblatt - Silver Spring MD, US
Isaac Shpantzer - Bethesda MD, US
Pak Shing Cho - Gaithersburg MD, US
Michael Tseytlin - Bethesda MD, US
Aviv Salamon - Washington DC, US

Assignee:

Celight, Inc. - Silver Spring MD

International Classification:

G02F 1/035
G02B 6/26
G02B 6/42

US Classification:

385 3, 385 39, 359246, 359254

Abstract:

An optical device includes, a first Mach-Zehnder modulator that produces a first output, and a second Mach-Zehnder modulator which produces a second output. A splitter couples the first and second Mach-Zehnder modulators. A combiner combines the first and second outputs. A phase shifter is coupled to the first and second Mach-Zehnder modulators. The first Mach-Zehnder modulator, second Mach-Zehnder modulator, splitter, combiner and the phase shifter are each formed as part of a single chip made of electro-optical material. Such two similar optical device integrated together with polarization combiner provide a two-polarization performance.

US Patent:

7327913, Feb 5, 2008

Filed:

Sep 22, 2003

Appl. No.:

10/669130

Inventors:

Isaac Shpantzer - Bethesda MD, US
Arkady Kaplan - East Brunswick NJ, US
Aviv Salamon - Washington DC, US
Yaakov Achiam - Rockville MD, US
Jacob B. Khurgin - Baltimore MD, US
Michael Tseytlin - Bethesda MD, US
Pak Shing Cho - Gaithersburg MD, US
Arthur Greenblatt - Silver Spring MD, US
Christopher Kerr - Annapolis MD, US
Geoffrey Harston - Laurel MD, US

Assignee:

Celight, Inc. - Silver Spring MD

International Classification:

G02B 6/12
G02B 6/26
G02F 1/03
G02F 1/07
H04B 10/06

US Classification:

385 15, 385 14, 359245, 398204, 398214

Abstract:

An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.

US Patent:

7397979, Jul 8, 2008

Filed:

Dec 14, 2006

Appl. No.:

11/610964

Inventors:

Isaac Shpantzer - Bethesda MD, US
Arkady Kaplan - Rockville MD, US
Aviv Salamon - Washington DC, US
Yaakov Achiam - Rockville MD, US
Jacob B. Khurgin - Baltimore MD, US
Michael Tseytlin - Bethesda MD, US
Pak Shing Cho - Gaithersburg MD, US
Arthur Greenblatt - Silver Spring MD, US
Christopher Kerr - Annapolis MD, US
Geoffrey Harston - Laurel MD, US

Assignee:

CeLight, Inc. - Silver Spring MD

International Classification:

G02B 6/12
G02B 6/26
G02F 1/03
G02F 1/07
H04B 10/06

US Classification:

385 14, 385 15, 359245, 398204, 398214

Abstract:

An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides.

US Patent:

7418209, Aug 26, 2008

Filed:

Jun 17, 2003

Appl. No.:

10/462834

Inventors:

Aviv Salamon - Washington DC, US
Nadejda Reingand - Baltimore MD, US
Isaac Shpantzer - Bethesda MD, US
Michael Tseytlin - Bethesda MD, US

Assignee:

CeLight, Inc. - Silver Spring MD

International Classification:

H04B 10/04
H04B 10/12
H04B 10/06
H04K 1/00

US Classification:

398185, 396182, 396154, 396203, 380256

Abstract:

The invention provides, according to its various embodiments, a method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. The multi-dimensional encoding technique includes multiple security layers and varies multiple physical characteristics of a communications signal. The multi-dimensional encoding technique may include at least one or more of encoding a phase of an optical communications signal, encoding a polarization of an optical communications signal, and encoding a frequency of an optical communications signal, or any combination thereof. According to embodiments of the invention, the encoding and/or any decoding of the optical communications signal may be carried out using one or more of an optical phase shift coding, a polarization multiplexing, and a multi-wavelength control. Multi-dimensional encoding and decoding keys are provided.

US Patent:

8526941, Sep 3, 2013

Filed:

Jun 28, 2007

Appl. No.:

11/770063

Inventors:

Michael Tseytlin - Bethesda MD, US
Santanu Dutta - Vienna VA, US

Assignee:

ATC Technologies, LLC - Reston VA

International Classification:

H04W 4/00
H04W 40/00
H04W 36/00

US Classification:

455427, 455428, 455429, 455430, 4554351, 4554352, 455436, 455437, 455438, 455439

Abstract:

Communications between a terminal and a terrestrial base station are established. The terrestrial base station receives a request to monitor a satellite base station from the terminal. The terrestrial base station grants the request and receives monitoring information for the satellite base station corresponding to the request. Granting of the request may include suspending transmission from the terrestrial base station to the terminal for a period of time sufficient to allow the terminal to request the monitoring information from the satellite base station and receiving monitoring information may include receiving the requested monitoring information at the terrestrial base station via a communications path not including the terminal. Suspending transmission from the terrestrial base station to the terminal may be followed by resuming transmission to the terminal before receiving the monitoring information at the terrestrial base station. The communications path not including the terminal may include a terrestrial Access Service Network Gateway serving the terrestrial base station and a satellite Access Service Network Gateway serving the satellite base station.

US Patent:

20020186435, Dec 12, 2002

Filed:

Feb 28, 2002

Appl. No.:

10/087022

Inventors:

Isaac Shpantzer - Bethesda MD, US
Yehouda Meiman - Rishon Letzion, IL
Michael Tseytlin - Bethesda MD, US
Olga Ritterbush - Rockville MD, US
Aviv Salamon - Washington DC, US
Peter Feldman - Short Hills NJ, US
Alper Demir - Istambul, TR
Peter Kinget - Summit NJ, US
Nagendra Krishnapura - Hoboken NJ, US
Jaijeet Roychowdhury - Minneapolis MN, US

International Classification:

H04J014/08
H04B010/04

US Classification:

359/136000, 359/180000

Abstract:

A system for optical communication send optical signals over a plurality of wavelength channels. Each wavelength channel comprises a number of orthogonal subchannel frequencies which are spaced apart from one another by a predetermined amount. Each of the subchannel frequencies is modulated with data from a data stream. The data modulation scheme splits a subchannel frequency code into H and V components, and further processes the components prior to modulation with data. The various data-modulated subchannels are then combined into a single channel for transmission. The received signals are detected and demodulated with the help of a symbol timing recovery module which establishes the beginning and end of each symbol. A polarization mode distortion compensation module at the receiver is used to mitigate the effects to polarization more distortion in the fiber.

US Patent:

20180054252, Feb 22, 2018

Filed:

Aug 16, 2017

Appl. No.:

15/679071

Inventors:

- Menlo Park CA, US
Matthew Stoneback - Menlo Park CA, US
Wilhelmus Hendrikus Theunissen - Belmont CA, US
Michael Tseytlin - Bethesda MD, US
Raymond R. Blasing - Los Altos CA, US
Gordon Michael Coutts - Santa Clara CA, US
Sam Padinjaremannil Alex - Sunnyvale CA, US

International Classification:

H04B 7/185
H04B 7/06
H04W 72/04

Abstract:

Systems and associated methods for adaptive beam aggregation in wireless communications between unmanned aerial vehicles (UAVs) and ground-based stations are disclosed herein. In some embodiments, a method for transmitting wireless data between an unmanned aerial vehicle (UAV) and a customer premise equipment (CPE) station includes transmitting a first wireless data between a first antenna array and a first CPE station and transmitting a second wireless data between a second antenna array and a second CPE station. The first and second antenna arrays can include one or more individual antennas of the UAV.