Resumes
Resumes
Jasbinder Sanghera Phones & Addresses
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Brambleton, VA
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Burke, VA
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Greenbelt, MD
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Lanham, MD
Publications
Us Patents
Multi Heating Zone Apparatus And Process For Making Core/Clad Glass Fibers
View pageUS Patent:
6526782, Mar 4, 2003
Filed:
Sep 28, 2001
Appl. No.:
09/964548
Inventors:
Reza Mossadegh - Alexandria VA
Brian Cole - Arlington VA
Pablo Pureza - Burke VA
Jasbinder Sanghera - Ashburn VA
Shyam Bayya - Ashburn VA
Ishwar Aggarwal - Fairfax Station VA
Brian Cole - Arlington VA
Pablo Pureza - Burke VA
Jasbinder Sanghera - Ashburn VA
Shyam Bayya - Ashburn VA
Ishwar Aggarwal - Fairfax Station VA
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
C03B 37022
US Classification:
65488, 65405, 65502, 65495, 65484, 65384
Abstract:
This invention pertains to apparatus and process for making core/clad glass fibers. The apparatus includes a central tube or receptacle connected at the top to a pressure controller and terminating in a reduced section; a side tube or receptacle positioned at about the level of the upper portion of the central tube; an outer tube or receptacle disposed around the bottom portion of the central tube terminating in a smaller section which is concentric with and spaced directly below the section of the central tube; a side arm connecting the side tube and the outer tube; and furnaces around the side, outer, and the reduced sections of the central and the outer tubes. The process includes the steps of disposing a solid core glass rod at a point removed from hot temperature that can cause crystallization in the core glass rod, disposing a solid clad glass rod at a point removed from the core glass rod, softening to the flowing condition the solid clad glass rod, transferring the softened clad glass to a lower point, the softened clad glass having a central void therethrough, heating the softened clad glass above its crystallization temperature, cooling the softened clad glass to a draw temperature, transferring the solid core glass rod into the central void in the softened clad glass, softening to the flowing condition the solid core glass rod with the heat from the softened and cooled clad glass, and drawing the core/clad glass fiber by allowing the clad and core glasses to flow in the form of a fiber.
Missile Warning And Protection System For Aircraft Platforms
View pageUS Patent:
6873893, Mar 29, 2005
Filed:
Aug 1, 2003
Appl. No.:
10/632211
Inventors:
Jasbinder Sanghera - Ashburn VA, US
Lynda Busse - Alexandria VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Lynda Busse - Alexandria VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G05D003/00
US Classification:
701 49, 701 1
Abstract:
This invention pertains to a jam head and to a protection system. The jam head is rotatable around at least two separate axes and includes a first part rotatable around a first axis and a second part rotatably connected to the first part and rotatable around a second axis; a viewing port in the first part for viewing an object; at least one reflecting surface for conveying an image through the port; a camera optically connected via the at least one reflecting surface to the port; and a unitary infrared transmitting glass fiber of constant core diameter passing from the laser to and through the first and the second parts for conveying an energetic infrared optical signal and an exit port through which the optical signal passes. The protection system is mounted on a movable platform and includes a detector for locating a threat; an electronic and control system connected to the detector for receiving a signal from the detector; a laser connected to the electronic and control system; and the jam head.
Amplification With Chalcogenide Glass Fiber
View pageUS Patent:
6928227, Aug 9, 2005
Filed:
Jul 12, 2001
Appl. No.:
09/906010
Inventors:
L. Brandon Shaw - Woodbridge VA, US
Jasbinder S. Sanghera - Burke VA, US
Peter Thielen - Landover Hills MD, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Jasbinder S. Sanghera - Burke VA, US
Peter Thielen - Landover Hills MD, US
Ishwar D. Aggarwal - Fairfax Station VA, US
International Classification:
G02B006/00
US Classification:
385141, 385142, 359334
Abstract:
This invention pertains to an optical device and method for using a chalcogenide glass waveguide to amplify a pump light beam by means of stimulated Raman scattering and obtaining a depleted pump light beam and an amplified beam at a wavelength higher than the wavelength of the depleted pump light beam.
Hollow Core Photonic Band Gap Infrared Fibers
View pageUS Patent:
6993230, Jan 31, 2006
Filed:
Aug 1, 2003
Appl. No.:
10/632210
Inventors:
Jasbinder Sanghera - Ashburn VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Leslie B. Shaw - Woodbridge VA, US
Pablo C. Pureza - Burke VA, US
Fred Kung - Alexandria VA, US
Brian Cole - Alexandria VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Leslie B. Shaw - Woodbridge VA, US
Pablo C. Pureza - Burke VA, US
Fred Kung - Alexandria VA, US
Brian Cole - Alexandria VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G02B 6/02
US Classification:
385125, 385123, 385122, 385141
Abstract:
This invention pertains to a hollow core photonic band gap chalcogenide optical glass fiber and to a fabrication method for making the fiber. The fiber, which is 80-1000 microns in outside diameter, is characterized by a solid glass circumferential region and a structured region disposed centrally within the solid region, the structured region includes a hollow core of 1 micron to several hundreds of microns in diameter surrounded by a plurality of parallel hollow capillaries extending parallel to the core, the core being centrally and longitudinally located within the fiber. Ratio of open space to glass in the structured region is 30-99%. The fabrication method includes the steps of providing a mold, placing chalcogenide micro-tubes around the mold, stacking chalcogenide micro-canes around the stacked micro-tubes, fusing the micro-tubes and the micro-canes to form a preform, removing the mold and drawing the preform to obtain the fiber. In an alternative fabrication method, the fiber is made by extruding flowing chalcogenide glass through suitably made plate to form a preform and then drawing the preform to form the fiber.
Ir Supercontinuum Source
View pageUS Patent:
7133590, Nov 7, 2006
Filed:
Mar 17, 2005
Appl. No.:
11/086731
Inventors:
Leslie B. Shaw - Woodbridge VA, US
Jasbinder S. Sanghera - Ashburn VA, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Peter A. Thielen - Landover Hills MD, US
Fred Kung - Alexandria VA, US
Jasbinder S. Sanghera - Ashburn VA, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Peter A. Thielen - Landover Hills MD, US
Fred Kung - Alexandria VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G02B 6/00
G02B 1/365
H01S 3/00
G02B 1/365
H01S 3/00
US Classification:
385122, 359332
Abstract:
This invention pertains to a device for broadening optical wavelength in the 2–14 μm region comprising a light source and a highly nonlinear chalcogenide fiber associated therewith whereby a light signal is passed from the light source into the fiber wherein and through interactions between the light signal and the material, bandwidth of the light signal is broadened in the 2–14 μm region.
Coated Non-Oxide Cathodoluminescent Phosphors, Films Thereof And Field Emission Devices Therewith
View pageUS Patent:
7173367, Feb 6, 2007
Filed:
Jan 5, 2001
Appl. No.:
09/755375
Inventors:
Jasbinder S. Sanghera - Greenbelt MD, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
H01J 1/62
US Classification:
313496
Abstract:
This invention is directed to phosphor particles and to field emission displays using the particles, each of the particles is coated with an electrically conducting material to impart to the particles environmental stability, stability under use conditions, and reduced charging.
Multi Heating Zone Apparatus And Process For Making Core/Clad Glass Fibers
View pageUS Patent:
7197899, Apr 3, 2007
Filed:
Jan 6, 2003
Appl. No.:
10/339255
Inventors:
Reza Mossadegh - Alexandria VA, US
Brian Cole - Arlington VA, US
Pablo Pureza - Burke VA, US
Jasbinder Sanghera - Ashburn VA, US
Shyam Bayya - Ashburn VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Brian Cole - Arlington VA, US
Pablo Pureza - Burke VA, US
Jasbinder Sanghera - Ashburn VA, US
Shyam Bayya - Ashburn VA, US
Ishwar Aggarwal - Fairfax Station VA, US
Assignee:
United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
C03B 37/075
US Classification:
65389, 65404, 65405, 65502
Abstract:
A process includes the steps of disposing a solid core glass rod at a point removed from hot temperature that can cause crystallization in the core glass rod, disposing a solid clad glass rod at a point removed from the core glass rod; softening to the flowing condition the solid clad glass rod, transferring the softened clad glass to a lower point, the softened clad glass having a central void therethrough, heating the softened clad glass above its crystallization temperature, cooling the softened clad glass to a draw temperature, transferring the solid core glass rod into the central void in the softened glad glass, softening to the flowing condition the solid core glass rod with the heat from the softened and cooled clad glass, and drawing the core/clad, glass fiber by allowing the clad and core glasses to flow in the form of a fiber.
Fluoride Salt Coated Magnesium Aluminate
View pageUS Patent:
7211325, May 1, 2007
Filed:
Mar 24, 2005
Appl. No.:
11/094544
Inventors:
Guollermo R. Villalobos - Springfield VA, US
Jasbinder S. Sanghera - Ashburn VA, US
Shyam Bayya - Ashburn VA, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Jasbinder S. Sanghera - Ashburn VA, US
Shyam Bayya - Ashburn VA, US
Ishwar D. Aggarwal - Fairfax Station VA, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
B32B 5/16
US Classification:
428403, 428404
Abstract:
A particle having a magnesium aluminate core and a fluoride salt coating on the core. The particle has been heated in an oxidizing atmosphere to a temperature in the range of about 400 C. to about 750 C. A method of making a particle by mixing a magnesium aluminate core with a solution of a fluoride salt in a solvent to form a slurry and spraying the slurry into a drying column. The slurry enters the column as an aerosol under thermal conditions that avoid boiling the solvent. The thermal conditions in the column evaporate the solvent as the aerosol moves through the column to form a coating of the fluoride salt on the core while substantially avoiding spalling.