Inventor

Ashish Madhukar Vengsarkar

Inventor

Berkeley Heights, NJ, US

Overview

35→

Patents

1993–2000

Patent span

Physics

Primary field (CPC G)

Patents· 35 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Bprimary

G02BOptical elements, systems or apparatus45%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light13%

B82YSpecific uses or applications of nanostructures8%

G01DMeasuring not specially adapted for a specific variable8%

H04BTransmission8%

G01BMeasuring length, thickness or similar linear dimensions3%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%

C03BManufacture, shaping, or supplementary processes2%

C03CChemical composition of glasses, glazes or vitreous enamels2%

G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves2%

PatentTitleYear

6,084,996'Broadband long-period gratings'2000 6,078,709'Method and apparatus for monitoring multi-wavelength optical systems'2000 6,050,109'Method for making long-period fiber gratings'2000 6,011,886'Recoatable temperature-insensitive long-period gratings'2000 5,999,671'Tunable long-period optical grating device and optical systems employing same'1999 5,953,471'Optical communication system having short period reflective Bragg gratings'1999 5,907,647'Long-period grating switches and devices using them'1999 5,828,802'Self-tuning optical waveguide filter'1998 5,802,236'Article comprising a micro-structured optical fiber, and method of making such fiber'1998 5,802,234'Dispersion compensating optical fiber, and communication system comprising same'1998 5,781,673'WDM optical fiber communication system with improved dispersion compensation'1998 5,764,829'Optical signal shaping device for complex spectral shaping applications'1998 5,757,540'Long-period fiber grating devices packaged for temperature stability'1998 5,721,796'Optical fiber cross connect with active routing for wavelength multiplexing and demultiplexing'1998 5,717,798'Optical waveguide system comprising a mode coupling grating and a mode discrimination coupler'1998 5,708,669'Article comprising a cladding-pumped optical fiber laser'1998 5,703,978'Temperature insensitive long-period fiber grating devices'1997 5,668,821'Optical systems and devices employing spectrally flattened amplified spontaneous emission'1997 5,647,039'Optical switching system and devices using a long period grating'1997 5,641,956'Optical waveguide sensor arrangement having guided modes-non guided modes grating coupler'1997 5,559,907'Method of controlling polarization properties of a photo-induced device in an optical waveguide and method of investigating structure of an optical waveguide'1996 5,550,940'Optical tapping filters employing long period gratings'1996 5,550,948'Method of determining changes in the refractive index of an optical waveguide'1996 5,528,716'Method of determining and investigating the physical structure of a light guiding body'1996 5,502,786'Method of forming photo-induced device and product'1996 5,478,371'Method for producing photoinduced bragg gratings by irradiating a hydrogenated glass body in a heated state'1995 5,473,714'Optical fiber system using tapered fiber devices'1995 5,448,674'Article comprising a dispersion-compensating optical waveguide'1995 5,430,817'Optical systems and devices using long period spectral shaping devices'1995 5,416,863'Mode-field transforming optical waveguide'1995 5,381,229'Sapphire optical fiber interferometer'1995 5,301,001'Extrinsic fiber optic displacement sensors and displacement sensing systems'1994 5,259,046'Article comprising an optical waveguide containing a fluorescent dopant'1993 5,224,182'Spatially-weighted two-mode optical fiber sensors'1993 5,208,877'Fiber optic grating-based weighted, two-mode fiber sensors'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1995Patents assigned to INNOVATIVE TECH CENTER (4)· patent assignee history

1993Patents assigned to AT & T BELL LAB (1)· patent assignee history

1993–1995Based in Allentown, PA, US· patent location history

1993Based in Ashville, NC, US· patent location history

1995–1996Patents assigned to AT & T CORP (7)· patent assignee history

1995–1997Based in Chatham, NJ, US· patent location history

1996–2000Patents assigned to LUCENT TECHNOLOGIES INC (23)· patent assignee history

1996Based in Morris, NJ, US· patent location history

1997Patents assigned to F & S INC (1)· patent assignee history

1997–2000Based in Berkeley Heights, NJ, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LUCENT TECHNOLOGIES INC	23	1996–2000
AT & T CORP	7	1995–1996
INNOVATIVE TECH CENTER	4	1993–1995
AT & T BELL LAB	1	1993
F & S INC	1	1997

Locations

Location	Patents	Span
Berkeley Heights, New Jersey, US	19	1997–2000
Chatham, New Jersey, US	9	1995–1997
Allentown, Pennsylvania, US	3	1993–1995
Ashville, NC, US	2	1993
Morris, New Jersey, US	1	1996