Kwang Wook Kim

US Patent:

6570697, May 27, 2003

Filed:

May 4, 2001

Appl. No.:

09/848968

Inventors:

Julio Martinez - Oakhurst NJ
Kwang Kim - Red Bank NJ
Olga Nedzhvetskaya - Eatontown NJ
Doruk Engin - Red Bank NJ
Jiten Sarathy - Atlantic Highlands NJ
Roman Antosik - Colts Neck NJ
Bharat Dave - Howell NJ
Michael Evans - Ocean NJ
David Lidsky - Sea Bright NJ
Ronald Simprini - Red Bank NJ
Boris Stefanov - Gillette NJ
Tan Thai - Jackson NJ

Assignee:

Alphion Corporation - Eatontown NJ

International Classification:

G02B 2600

US Classification:

359238

Abstract:

A method and circuit are presented for an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. The method involves subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.

US Patent:

6636318, Oct 21, 2003

Filed:

Oct 5, 2001

Appl. No.:

09/971784

Inventors:

Jithamithra Sarathy - Atlantic Highlands NJ
Bharat Dave - Howell NJ
Boris Stefanov - Gillette NJ
Ronald Simprini - Red Bank NJ
Tan B. Thai - Jackson NJ
Roman Antosik - Colts Neck NJ
Aleksandr Miglo - Ocean NJ
Kwang Kim - Red Bank NJ
Doruk Engin - Rye NY

Assignee:

Alphion Corp. - Eatontown NJ

International Classification:

G01B 902

US Classification:

356450, 356477, 359238

Abstract:

A method and system for AO R functionality is presented. The system includes an AO R device followed by an AOCR clock recovery module and an AOR retiming device. The AOR retiming device takes as input a recovered clock signal extracted from the output of the AO R by the AOCR clock recovery module. The output is the recovered clock signal gated by the regenerated and reshaped input signal, and a monitor circuit is used to set the optimum operations of the retiming device. In a first embodiment the output of the AOR retiming device is fed to an AOC code and wavelength conversion output stage, which returns the signal to the NRZ coding, on a service wavelength converted to match the fixed wavelength connection with the DWDM transmission system. In a second embodiment the code conversion is incorporated into the AOR retiming device, and wavelength conversion is accomplished in the AOCR clock recovery device.

US Patent:

6646794, Nov 11, 2003

Filed:

Jul 15, 2002

Appl. No.:

10/195264

Inventors:

Julio Martinez - Oakhurst NJ
Kwang Kim - Red Bank NJ
Olga Nedzhvetskaya - Eatontown NJ
Doruk Engin - Red Bank NJ
Jiten Sarathy - Atlantic Highlands NJ
Bharat Dave - Howell NJ
Ronald Simprini - Red Bank NJ
Boris Stefanov - Gillette NJ
Tan Thai - Jackson NJ

Assignee:

Alphion Corporation - Eatontown NJ

International Classification:

H01S 300

US Classification:

359344

Abstract:

A method and circuit are presented for an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. The method involves subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.

US Patent:

6724484, Apr 20, 2004

Filed:

Jul 15, 2002

Appl. No.:

10/195699

Inventors:

Julio Martinez - Oakhurst NJ
Kwang Kim - Red Bank NJ
Olga Nedzhvetskaya - Eatontown NJ
Doruk Engin - Red Bank NJ
Jiten Sarathy - Atlantic Highlands NJ
Roman Antosik - Colts Neck NJ
Bharat Dave - Howell NJ
Michael Evans - Ocean NJ
David Lidsky - Sea Bright NJ
Ronald Simprini - Red Bank NJ
Boris Stefanov - Gillette NJ
Tan Thai - Jackson NJ

Assignee:

Alphion Corporation - Eatontown NJ

International Classification:

G01B 902

US Classification:

356477

Abstract:

A method and circuit are presented for an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. The method involves subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.

US Patent:

6727991, Apr 27, 2004

Filed:

Jul 15, 2002

Appl. No.:

10/195701

Inventors:

Julio Martinez - Oakhurst NJ
Kwang Kim - Red Bank NJ
Olga Nedzhvetskaya - Eatontown NJ
Doruk Engin - Red Bank NJ
Jiten Sarathy - Atlantic Highlands NJ
Roman Antosik - Colts Neck NJ
Bharat Dave - Howell NJ
Michael Evans - Ocean NJ
David Lidsky - Sea Bright NJ
Ronald Simprini - Red Bank NJ
Boris Stefanov - Gillette NJ
Tan Thai - Jackson NJ

Assignee:

Alphion Corporation - Eatontown NJ

International Classification:

G01B 902

US Classification:

356477

Abstract:

A method and circuit are presented for an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. The method involves subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.

US Patent:

7139475, Nov 21, 2006

Filed:

May 19, 2000

Appl. No.:

09/573563

Inventors:

Chang H. Kim - Whippany NJ, US
Kwang S. Kim - Red Bank NJ, US

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04J 14/02

US Classification:

398 5, 398154, 398398, 398155

Abstract:

An optical receiver is provided with inputs for receiving two fiber optic lines. The two fiber optic lines carry redundant data. An optical interface passes the respective signals therein to a comparison unit. The comparison unit compares the signals and determines which has the better quality and passes the better quality signal on to a processing interface. Clock data for operating the comparison unit is extracted from the optical signals.

US Patent:

20030067648, Apr 10, 2003

Filed:

Apr 8, 2002

Appl. No.:

10/118596

Inventors:

Roman Antosik - Colts Neck NJ, US
Jayanta Das - Morganville NJ, US
Bharat Dave - Howell NJ, US
Kuo-Ming Lee - Morganville NJ, US
David Lowe - Howell NJ, US
Kwang Kim - Red Bank NJ, US
Jithamithra Sarathy - Atlantic Highlands NJ, US
Ronald Simprini - Red Bank NJ, US
Boris Stefanov - Gillette NJ, US
Tan Thai - Jackson NJ, US
Wai-Ching Yu - Holmdel NJ, US

International Classification:

H04J014/02

US Classification:

359/124000

Abstract:

A method and apparatus are presented for implementing maintenance signaling in an optical data network, said method comprising the use of a finite set of optical symbols to distinguish between different classes of failures. The method is format and bit rate transparent, and a network element does not need to read bits to interpret a signaling message. Faults protected within the network are distinguished from faults originating outside the network, and power glitches are filtered out of incoming alarm signals originating outside the network.

US Patent:

20100084332, Apr 8, 2010

Filed:

Sep 29, 2009

Appl. No.:

12/569551

Inventors:

Daniel Lynn - Spring Grove IL, US
Tat Mui - Chicago IL, US
Andres Pasko - Genoa WI, US
Mark Jones - Libertyville IL, US
Kwang Suk Kim - Palatine IL, US
Walter Timothy Watts - Arlington Heights IL, US
Dennis Clyde Berry - Woodstock IL, US
James Darren Roxas - Chicago IL, US

Assignee:

FENWAL, INC. - Lake Zurich IL

International Classification:

B01D 29/01
B32B 37/04
B32B 37/10
B30B 15/02
B01D 35/30

US Classification:

210435, 156290, 156251, 156581

Abstract:

A method for manufacturing a blood filter assembly is provided that includes the steps of providing a first housing sheet and a second housing sheet. The method includes locating and sealing at least one port onto each of the first and second housing sheets. The method includes locating the filtration medium between the first housing sheet and the second housing sheet. The method includes applying heat and pressure to form at least one seal that commingles the first and second housing sheets along with the filtration medium, wherein the periphery of the seal commingles only the first and second housing sheets.