Patents by Inventor Yoav Sintov
Yoav Sintov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11982836Abstract: An optical fiber heating device includes a heat producing fiber wrapped around a cell which is filled with an atom vapor.Type: GrantFiled: March 23, 2021Date of Patent: May 14, 2024Assignee: Soreq Nuclear Research CenterInventors: Bruno Sfez, Yoav Sintov, Shaul Pearl
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Publication number: 20230119397Abstract: An optical fiber heating device includes a heat producing fiber wrapped around a cell which is filled with an atom vapor.Type: ApplicationFiled: March 23, 2021Publication date: April 20, 2023Applicant: Soreq Nuclear Research CenterInventors: Bruno Sfez, Yoav Sintov, Shaul Pearl
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Patent number: 11204325Abstract: A system includes a laser (1) operative to emit a light beam, a beam splitter (2) arranged to split the light beam into a first beam and a second beam, the first beam being directed to a nonlinear converter (8) that generates a signal beam having a Stokes-shifted wavelength, a recombiner (9) arranged to recombine the signal beam with the second beam to form a recombined beam which is directed to a tapered optical fiber (5) located within a material to be monitored, and a detector (7) arranged to detect light emitted by the tapered optical fiber (5) and which uses stimulated Raman spectroscopy to detect a chemical in the material.Type: GrantFiled: May 26, 2019Date of Patent: December 21, 2021Assignee: Soreq Nuclear Research CenterInventors: Bruno Sfez, Shaul Pearl, Sharone Goldring, Yoav Sintov
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Publication number: 20210223180Abstract: A system includes a laser (1) operative to emit a light beam, a beam splitter (2) arranged to split the light beam into a first beam and a second beam, the first beam being directed to a nonlinear converter (8) that generates a signal beam having a Stokes-shifted wavelength, a recombiner (9) arranged to recombine the signal beam with the second beam to form a recombined beam which is directed to a tapered optical fiber (5) located within a material to be monitored, and a detector (7) arranged to detect light emitted by the tapered optical fiber (5) and which uses stimulated Raman spectroscopy to detect a chemical in the material.Type: ApplicationFiled: May 26, 2019Publication date: July 22, 2021Applicant: Soreq Nuclear Research CenterInventors: Bruno Sfez, Shaul Pearl, Sharone Goldring, Yoav Sintov
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Patent number: 10186825Abstract: A microwave excited gas slab laser comprising a waveguide wherein the electrodes are covered with multi-layered stripes either forming a photonic band-gap or having a refractive index lower than 1.Type: GrantFiled: March 21, 2016Date of Patent: January 22, 2019Assignee: Soreq Nuclear Research CenterInventors: Yoav Sintov, Zeev Zalevski
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Publication number: 20180191123Abstract: A microwave excited gas slab laser comprising a waveguide wherein the electrodes are covered with multi-layered stripes either forming a photonic band-gap or having a refractive index lower than 1.Type: ApplicationFiled: March 21, 2016Publication date: July 5, 2018Applicant: Soreq Nuclear Research CenterInventors: Yoav Sintov, Zeev Zalevski
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Patent number: 9268095Abstract: A low mode beam combiner (10) including individual entry fibers (12) that maintain a low mode operation, an exit fiber (16), and a spliced section (14) including a bundle of spliced entry fibers (12), in which a bundle diameter is reduced to a LMA (large mode area) core of the exit fiber (16).Type: GrantFiled: January 4, 2011Date of Patent: February 23, 2016Assignee: Soreq Nuclear Research CenterInventors: Yariv Shamir, Yoav Sintov
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Publication number: 20120281948Abstract: A low mode beam combiner (10) including individual entry fibers (12) that maintain a low mode operation, an exit fiber (16), and a spliced section (14) including a bundle of spliced entry fibers (12), in which a bundle diameter is reduced to a LMA (large mode area) core of the exit fiber (16).Type: ApplicationFiled: January 4, 2011Publication date: November 8, 2012Inventors: Yariv Shamir, Yoav Sintov
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Patent number: 8229262Abstract: A fiber-optic coupler packaging including an internal encapsulation for encapsulating a fiber-optic coupler, the refraction index of the internal encapsulation is smaller than the refraction index of the fiber-optic coupler, and an external encapsulation, for encapsulating the internal encapsulation, the refraction index of the external encapsulation is greater than the refraction index of the internal encapsulation, the internal encapsulation and the external encapsulation are substantially transparent to the range of wavelengths of the light traveling inside the fiber-optic coupler.Type: GrantFiled: March 17, 2010Date of Patent: July 24, 2012Assignees: V-Gen Ltd., State of Israel-SOREQ Nuclear Research CenterInventors: Eran Inbar, Yoav Sintov
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Publication number: 20090285247Abstract: Optical apparatus including a pump-guiding fiber (30) including a fiber cladding (31), a fiber core (32) and an attachment section (33), the attachment section (33) including a straight core section (34) and a tapered core section (35), the pump-guiding fiber (30) being optically attached at one end thereof to a pump source (29) and an opposite end of the pump-guiding fiber (30) being attached to an inner clad (42) of a receiving fiber (40) through an attachment section (50), the attachment section (50) including both the straight core section (34) and the tapered core section (35) of the pump-guiding fiber (30), characterized in that both the straight core section (34) and the tapered core section (35) of the pump-guiding fiber (30) are attached to the receiving fiber (40) with an intermediate sol-gel material (51).Type: ApplicationFiled: July 2, 2007Publication date: November 19, 2009Inventors: Yoav Sintov, Raz Gvishi, Yaakov Glick, Ori Katz, Galit Strum, Avraham Englander
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Patent number: 7557986Abstract: A high power fiber amplifier including a double clad fiber including a protective outer jacket (41), an outer clad (44), an inner clad (42, 35) and a doped core (43, 34, 32), and a source of pump power coupled to the inner clad through coupling optics (22) and at least one of a side-fiber coupling section and an end-fiber coupling section, wherein the inner clad includes a large diameter core portion (34), operative as a high power amplification stage, capable of absorbing the majority of the pump power, and a small diameter core portion (32), operative as a low power amplification stage, wherein both core portions, pumped through the inner clad (35), are serially connected through an optical interface point (37).Type: GrantFiled: May 11, 2005Date of Patent: July 7, 2009Assignee: Soreq Nuclear Research CenterInventor: Yoav Sintov
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Publication number: 20070229940Abstract: A high power fiber amplifier including a double clad fiber including a protective outer jacket (41), an outer clad (44), an inner clad (42, 35) and a doped core (43, 34, 32), and a source of pump power coupled to the inner clad through coupling optics (22) and at least one of a side-fiber coupling section and an end-fiber coupling section, wherein the inner clad includes a large diameter core portion (34), operative as a high power amplification stage, capable of absorbing the majority of the pump power, and a small diameter core portion (32), operative as a low power amplification stage, wherein both core portions, pumped through the inner clad (35), are serially connected through an optical interface point (37).Type: ApplicationFiled: May 11, 2005Publication date: October 4, 2007Inventor: Yoav Sintov
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Patent number: 7277612Abstract: Optical apparatus comprising a pump guiding fiber comprising a fiber cladding, a fiber core and an attachment section, the attachment section comprising a straight core section and a tapered core section, and a receiving fiber comprising an inner clad to which the attachment section is attached.Type: GrantFiled: June 14, 2004Date of Patent: October 2, 2007Assignee: Soreq Nuclear Research CenterInventor: Yoav Sintov
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Publication number: 20060133731Abstract: Optical apparatus comprising a pump guiding fiber comprising a fiber cladding, a fiber core and an attachment section, the attachment section comprising a straight core section and a tapered core section, and a receiving fiber comprising an inner clad to which the attachment section is attached.Type: ApplicationFiled: June 14, 2004Publication date: June 22, 2006Inventor: Yoav Sintov
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Patent number: 6611641Abstract: A high efficiency, high performance optical amplifier includes an amplification stage comprised of two Erbium doped fiber (EDF) gain sections separated by a variable optical attenuator (VOA). A single pump serves to pump both EDF sections. A high dynamic gain range is achieved by an interplay between the action of the VOA, and the pump energy absorption mechanisms in each gain section, which are dominated by the saturation characteristics of each of the EDFs. In a preferred embodiment of the method, input signals are coupled with a pump signal into a first EDF gain section in which the energy absorption mechanisms provide first amplified signals that are correlated with a residual pump signal. At the first EDF gain section output, the combined amplified signals and residual pump signal are decoupled, the amplified signals being attenuated in the VOA while the residual pump signal being routed around the VOA.Type: GrantFiled: October 30, 2001Date of Patent: August 26, 2003Assignee: Redc Optical Networks Ltd.Inventors: Uri Ghera, Yoav Sintov, Reuven Zaibel
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Patent number: 6563629Abstract: A method and apparatus for optical amplification with a large dynamic gain range in both the non-linear (1530-1540 nm) and linear (1540-1565 nm) regimes of the C-Band. The large dynamic gain range is achieved by the synergistic operation of a dual-stage Erbium-doped Fiber Amplifier (EDFA) having a self-saturating Thulium-doped fiber inserted between the two stages. The Thulium-doped fiber saturation is determined by the output power of the first EDFA stage, and the synergistic, combined operation of both EDFA stages and the self-saturating absorber is controlled by appropriate algorithms and software.Type: GrantFiled: September 27, 2001Date of Patent: May 13, 2003Assignee: REDC Optical Networks Ltd.Inventors: Uri Ghera, Yoav Sintov, Reuven Zaibel
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Publication number: 20030081892Abstract: A high efficiency, high performance optical amplifier includes an amplification stage comprised of two Erbium doped fiber (EDF) gain sections separated by a variable optical attenuator (VOA). A single pump serves to pump both EDF sections. A high dynamic gain range is achieved by an interplay between the action of the VOA, and the pump energy absorption mechanisms in each gain section, which are dominated by the saturation characteristics of each of the EDFs. In a preferred embodiment of the method, input signals are coupled with a pump signal into a first EDF gain section in which the energy absorption mechanisms provide first amplified signals that are correlated with a residual pump signal. At the first EDF gain section output, the combined amplified signals and residual pump signal are decoupled, the amplified signals being attenuated in the VOA while the residual pump signal being routed around the VOA.Type: ApplicationFiled: October 30, 2001Publication date: May 1, 2003Applicant: REDC OPTICAL NETWORKS LTD.Inventors: Uri Ghera, Yoav Sintov, Reuven Zaibel
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Publication number: 20020181079Abstract: A method and apparatus for optical amplification with a large dynamic gain range in both the non-linear (1530-1540 nm) and linear (1540-1565 nm) regimes of the C-Band. The large dynamic gain range is achieved by the synergistic operation of a dual-stage Erbium-doped Fiber Amplifier (EDFA) having a self-saturating Thulium-doped fiber inserted between the two stages. The Thulium-doped fiber saturation is determined by the output power of the first EDFA stage, and the synergistic, combined operation of both EDFA stages and the self-saturating absorber is controlled by appropriate algorithms and software.Type: ApplicationFiled: September 27, 2001Publication date: December 5, 2002Applicant: REDC OPTICAL NETWORKS LTD.Inventors: Uri Ghera, Yoav Sintov, Reuven Zaibel
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Publication number: 20020141695Abstract: This invention is a dynamic gain equalizer for fiber optic communication systems with a spectral output that can be changed dynamically as needed by adjusting one or more variable power lasers providing optical pumping. The proposed dynamic gain equalizer can adjust power inequalities in WDM signals resulting from the gain properties of EDFA's. The dynamic gain equalizer uses erbium ions in a system that has not been pumped by a laser, or pumped only to a small extent, with the result that passing radiation can be absorbed by the erbium ion. For a given erbium doped fiber, with a given fiber length, the spectral absorption of the fiber is dependent on the signal power entering the erbium doped fiber for each of the signal wavelengths. In order to vary the absorption spectrum of the filter, the erbium doped fiber is pumped by a laser at a low power, to levels where the excited state population inversion either has not occurred or is insufficient to achieve total gain.Type: ApplicationFiled: February 7, 2001Publication date: October 3, 2002Applicant: REDC OPTICAL NETWORKS LTD.Inventors: Uri Ghera, Yoav Sintov, Reuven Zaibel
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Publication number: 20020122445Abstract: A laser with microwave excitation includes a source of microwave radiation coupled to a microwave resonator. The resonator is configured such that the microwave radiation generates an oscillating electric-field perpendicular to the longitudinal axis of the resonator corresponding to the first longitudinal resonator mode standing wave pattern. An excitation cavity, housing at least one gas discharge conduit, is coupled to the microwave resonator along a major portion of the cavity's length. The excitation cavity is configured to be below cutoff.Type: ApplicationFiled: January 18, 2001Publication date: September 5, 2002Applicant: RAMOT UNIVERSITY AUTHORITY FOR APPLIED RESEARCH AND INDUSTRIAL DEVELOPTMENT LTDInventors: Eli Jerby, Avi Shahadi, Yoav Sintov, Shaul Yatsiv