Patents by Inventor Gil Blecher
Gil Blecher 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: 8885985Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: August 29, 2012Date of Patent: November 11, 2014Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20120321298Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: August 29, 2012Publication date: December 20, 2012Applicant: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Patent number: 8320777Abstract: An interferometer includes an optical beam splitter that splits an input optical signal into a first optical signal propagating in a first optical path comprising free space and a second optical signal propagating in a second optical path comprising a dielectric medium. A differential delay delays the second optical signal relative to the first optical signal by a differential delay time that is proportional to at least one of a temperature and a refractive index of the dielectric medium. A temperature controller in thermal contact with the dielectric medium changes the temperature of the dielectric medium to control at least one of thermal expansion/contraction and a temperature dependent change in the refractive index of the dielectric medium, thereby changing the differential phase delay.Type: GrantFiled: May 7, 2009Date of Patent: November 27, 2012Assignee: Finisar CorporationInventors: Reuven Zaibel, Gil Blecher
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Patent number: 8260092Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: February 21, 2011Date of Patent: September 4, 2012Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Patent number: 8229254Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: November 14, 2008Date of Patent: July 24, 2012Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Patent number: 8195012Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: November 14, 2008Date of Patent: June 5, 2012Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20110142445Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: February 21, 2011Publication date: June 16, 2011Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Patent number: 7907798Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: November 17, 2008Date of Patent: March 15, 2011Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20100135677Abstract: An interferometer includes an optical beam splitter that splits an input optical signal into a first optical signal propagating in a first optical path comprising free space and a second optical signal propagating in a second optical path comprising a dielectric medium. A differential delay delays the second optical signal relative to the first optical signal by a differential delay time that is proportional to at least one of a temperature and a refractive index of the dielectric medium. A temperature controller in thermal contact with the dielectric medium changes the temperature of the dielectric medium to control at least one of thermal expansion/contraction and a temperature dependent change in the refractive index of the dielectric medium, thereby changing the differential phase delay.Type: ApplicationFiled: May 7, 2009Publication date: June 3, 2010Applicant: FINISAR CORPORATIONInventors: Reuven Zaibel, Gil Blecher
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Publication number: 20090080883Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: November 17, 2008Publication date: March 26, 2009Applicant: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20090073561Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: November 14, 2008Publication date: March 19, 2009Applicant: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20090073560Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: November 14, 2008Publication date: March 19, 2009Applicant: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Patent number: 7454092Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: GrantFiled: October 24, 2006Date of Patent: November 18, 2008Assignee: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher
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Publication number: 20080095487Abstract: In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Applicant: Kailight Photonics, Inc.Inventors: Er'el Granot, Shalva Ben-Ezra, Gil Blecher, Shai Tzadok, Reuven Zaibel, Roni Dadon, Motti Caspi, Haim Chayet, Yehuda Ganz, Arieh Sher