Resumes
Resumes
Jaroslaw Abramczyk Phones & Addresses
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9A Farmington Chase Cres, Farmington, CT 06032 (860) 874-8316
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35 Sterling St, New Britain, CT 06053 (860) 348-9866
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23 Indian Hill St, East Hartford, CT 06108 (860) 206-0261 (860) 289-8871
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Hartford, CT
Publications
Us Patents
Method And Apparatus For Providing Light Having A Selected Polarization With An Optical Fiber
View pageUS Patent:
7724422, May 25, 2010
Filed:
Jan 31, 2005
Appl. No.:
10/597592
Inventors:
Jaroslaw Abramczyk - New Britain CT, US
Upendra H. Manyam - Weatogue CT, US
Bryce N. Samson - Granby CT, US
Kanishka Tankala - South Windsor CT, US
Upendra H. Manyam - Weatogue CT, US
Bryce N. Samson - Granby CT, US
Kanishka Tankala - South Windsor CT, US
Assignee:
Nufern - East Granby CT
International Classification:
H01S 3/00
US Classification:
3593411, 359342
Abstract:
Optical apparatus () for providing light having a selected linear polarization having a polarization ratio, the apparatus () comprising a length of optical fiber () comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber () were placed in a first position between the length of fiber () is substantially linearly oriented () the fiber () could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus () could provide light having a first polarization ratio for the selected linear polarization and an Mparameter, and wherein the length of fiber () is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus () can provide light having a reduced Mparameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber () is in the second position the apparatus () can provide a slope efficiency that is at least 50% of the ratio of the second wavelength to the first wavelength.
Optical Fiber Having Reduced Defect Density
View pageUS Patent:
20050254765, Nov 17, 2005
Filed:
May 3, 2005
Appl. No.:
11/121501
Inventors:
Martin Seifert - West Simsbury CT, US
Upendra Manyam - Weatogue CT, US
Mansoor Alam - Rocky Hill CT, US
Kanishka Tankala - South Windsor CT, US
Jaroslaw Abramczyk - New Britain CT, US
Douglas Guertin - Charlton MA, US
Nils Jacobson - North Granby CT, US
Upendra Manyam - Weatogue CT, US
Mansoor Alam - Rocky Hill CT, US
Kanishka Tankala - South Windsor CT, US
Jaroslaw Abramczyk - New Britain CT, US
Douglas Guertin - Charlton MA, US
Nils Jacobson - North Granby CT, US
International Classification:
G02B006/16
US Classification:
385123000
Abstract:
An optical fiber comprising a multimode glass core having a diameter of at least 250 microns and an index of refraction and a polymer cladding having a thickness and contactingly surrounding a glass portion of the fiber so as to define an interface between the glass portion and the polymer cladding. The polymer cladding can have a first index of refraction that is less than the index of refraction. The fiber can comprise a density of less than 0.25 non-conforming regions having a diameter of 25 microns or greater per millimeter of length along the fiber, where each of the non-conforming regions is a region visible to the human eye under an optical microscope and having at least a portion thereof within a selected distance of the interface. The selected distance can be less than or equal to the thickness of the polymer cladding. The optical microscope can have a total magnification of about 200. The polymer cladding can be applied to at least a part of the optical fiber in at least a class 1000 environment. Methods of using optical fibers, including receiving with an optical fiber optical energy from a source and guiding the optical energy with the optical fiber, wherein the optical energy comprises at least one of 1) pulses each comprising a peak power of at least 10 kW, 2) an average power of at least 50 Watts, or 3) an average power density of at least 2.9 kW/cm.
Optical Fiber Having Reduced Defect Density
View pageUS Patent:
20090129735, May 21, 2009
Filed:
Jan 27, 2009
Appl. No.:
12/360752
Inventors:
Martin Seifert - West Simsbury CT, US
Upendra H. Manyam - Mumbai, IN
Mansoor Alam - Rocky Hill CT, US
Kanishka Tankala - South Windsor CT, US
Jaroslaw Abramczyk - New Britain CT, US
Douglas Guertin - Monson MA, US
Nils Jacobson - Windsor CT, US
Upendra H. Manyam - Mumbai, IN
Mansoor Alam - Rocky Hill CT, US
Kanishka Tankala - South Windsor CT, US
Jaroslaw Abramczyk - New Britain CT, US
Douglas Guertin - Monson MA, US
Nils Jacobson - Windsor CT, US
Assignee:
NUFERN - East Granby CT
International Classification:
G02B 6/02
US Classification:
385123
Abstract:
An optical fiber comprising a multimode glass core having a diameter of at least 250 microns and an index of refraction and a polymer cladding having a thickness and contactingly surrounding a glass portion of the fiber so as to define an interface between the glass portion and the polymer cladding. The polymer cladding can have a first index of refraction that is less than the index of refraction. The fiber can comprise a density of less than 0.25 non-conforming regions having a diameter of 25 microns or greater per millimeter of length along the fiber, where each of the non-conforming regions is a region visible to the human eye under an optical microscope and having at least a portion thereof within a selected distance of the interface. The selected distance can be less than or equal to the thickness of the polymer cladding. The optical microscope can have a total magnification of about 200. The polymer cladding can be applied to at least a part of the optical fiber in at least a class 1000 environment. Methods of using optical fibers, including receiving with an optical fiber optical energy from a source and guiding the optical energy with the optical fiber, wherein the optical energy comprises at least one of 1) pulses each comprising a peak power of at least 10 kW, 2) an average power of at least 50 Watts, or 3) an average power density of at least 2.9 kW/cm.
Mode Mixing Optical Fibers And Methods And Systems Using The Same
View pageUS Patent:
20200393620, Dec 17, 2020
Filed:
Aug 31, 2020
Appl. No.:
17/007669
Inventors:
- East Granby CT, US
Kevin Farley - South Windsor CT, US
Jaroslaw Abramczyk - Farmington CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - South Windsor CT, US
Kevin Farley - South Windsor CT, US
Jaroslaw Abramczyk - Farmington CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - South Windsor CT, US
International Classification:
G02B 6/14
G02B 6/26
H01S 3/08
H01S 3/067
G02B 6/036
G02B 6/02
G02B 6/26
H01S 3/08
H01S 3/067
G02B 6/036
G02B 6/02
Abstract:
The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber for delivering optical radiation having a wavelength, the mode mixing optical fiber having an input end, an output end, a centerline and a refractive index profile, the mode mixing optical fiber comprising: an innermost core, the innermost core having a refractive index profile; and a cladding disposed about the innermost core, wherein the mode mixing optical fiber has at least five modes at the wavelength, and wherein the mode mixing optical fiber is configured to distribute a fraction of the light input at its input end from its lower-order modes to its higher-order modes.
Mode Mixing Optical Fibers And Methods And Systems Using The Same
View pageUS Patent:
20190052043, Feb 14, 2019
Filed:
Feb 6, 2017
Appl. No.:
16/075573
Inventors:
- East Granby CT, US
Kevin Farley - East Granby CT, US
Jaroslaw Abramczyk - East Granby CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - East Granby CT, US
Peyman Ahmadi - East Granby CT, US
Eric Lim - East Granby CT, US
Kevin Farley - East Granby CT, US
Jaroslaw Abramczyk - East Granby CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - East Granby CT, US
Peyman Ahmadi - East Granby CT, US
Eric Lim - East Granby CT, US
International Classification:
H01S 3/067
G02B 6/14
G02B 6/036
C03B 37/027
G02B 6/14
G02B 6/036
C03B 37/027
Abstract:
The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber that includes a core having a refractive index profile; and a cladding disposed about the core. The core of the mode mixing optical fiber supports at least two (e.g., at least five) guided modes at the wavelength. The mode mixing optical fiber is configured to substantially distribute optical radiation having the wavelength propagating therein (e.g., input at its input end or generated or amplified within the core) among a plurality of the guided modes (e.g., to distribute a substantial fraction of the optical radiation having the wavelength propagating therein from its lower-order guided modes to its higher-order guided modes).
Mode Mixing Optical Fibers And Methods And Systems Using The Same
View pageUS Patent:
20190011637, Jan 10, 2019
Filed:
Aug 12, 2016
Appl. No.:
15/752546
Inventors:
- Easy Granby CT, US
Kevin Farley - South Windsor CT, US
Jaroslaw Abramczyk - Farmington CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - South Windsor CT, US
Kevin Farley - South Windsor CT, US
Jaroslaw Abramczyk - Farmington CT, US
Michael Conroy - East Granby CT, US
Kanishka Tankala - South Windsor CT, US
Assignee:
Nufem - East Granby CT
International Classification:
G02B 6/14
G02B 6/036
G02B 6/26
G02B 6/02
H01S 3/067
G02B 6/036
G02B 6/26
G02B 6/02
H01S 3/067
Abstract:
The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber for delivering optical radiation having a wavelength, the mode mixing optical fiber having an input end, an output end, a centerline and a refractive index profile, the mode mixing optical fiber comprising: an innermost core, the innermost core having a refractive index profile; and a cladding disposed about the innermost core, wherein the mode mixing optical fiber has at least five modes at the wavelength, and wherein the mode mixing optical fiber is configured to distribute a fraction of the light input at its input end from its lower-order modes to its higher-order modes.