Patents by Inventor Shlomo Ruschin
Shlomo Ruschin 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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Publication number: 20100156679Abstract: A modulator device for converting digital data into modulation of an optical signal includes an electronic input for receiving an input data word of N bits and an electrically controllable modulator for modulating the intensity of an optical signal, the modulator including M actuating electrodes where M?N. An electrode actuating device, most preferably a digital-to-digital converter, operates actuating electrodes so that at least one electrode is actuated as a function of values of more than one bit of the input data word. According to an alternative, or supplementary, aspect of the invention, the set of electrodes includes at least one electrode having an effective area which is not interrelated to others of the set by factors of two. In one preferred implementation, a Mach-Zehnder modulator also provides phase modulation to give QAM functionality. Another implementation employs a semiconductor laser.Type: ApplicationFiled: December 14, 2009Publication date: June 24, 2010Applicant: RAMOT AT TEL AVIV UNIVERSITY LTD.Inventors: Yossef EHRLICHMAN, Ofer Amrani, Shlomo Ruschin
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Patent number: 7724425Abstract: Methods and corresponding apparatus for optical amplification in semiconductors, particularly indirect band-gap semiconductors, and most particularly in silicon. A first aspect of the invention employs certain doping elements to provide inter-band-gap energy levels in combination with optical or current-injection pumping. The doping element, preferably a noble metal and most preferably Gold, is chosen to provide an energy level which enables an energy transition corresponding to a photon of wavelength equal to the signal wavelength to be amplified. The energy transition may be finely “adjusted” by use of standard doping techniques (such as n-type or p-type doping) to alter the conduction and valence band energy levels and thereby also the magnitude of the energy transition. A second aspect of the invention relates to the use of a non-homogeneous heat distribution which has been found to lead to optical amplification effects.Type: GrantFiled: January 25, 2009Date of Patent: May 25, 2010Assignee: Ramot at Tel Aviv University Ltd.Inventors: Shlomo Ruschin, Stanislav Stepanov
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Patent number: 7653281Abstract: Waveguide(s) (130) including at least partially buried channels) (120) within substrate(s) (100) having at least one substantially planar surface (110) are disclosed. According to some embodiments at least part of the channel (120) is located beneath at least a portion of the substrate (100). According to some embodiments the waveguide channel (120) includes a substantially transparent core (140) and optional cladding (160) extending through the channel (120). Alternately, an inner surface of the channel (120) is highly reflective. Furthermore, structures for use as waveguides (130) and/or as microchannels for fluid flow are disclosed herein. Also disclosed are production methods for such waveguides and said structures (130) and said structures, and methods of using such waveguides (130).Type: GrantFiled: September 4, 2005Date of Patent: January 26, 2010Assignee: Ramot At Tel-Aviv University Ltd.Inventors: Stanislav Stepanov, Shlomo Ruschin
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Publication number: 20090168151Abstract: Methods and corresponding apparatus for optical amplification in semiconductors, particularly indirect band-gap semiconductors, and most particularly in silicon. A first aspect of the invention employs certain doping elements to provide inter-band-gap energy levels in combination with optical or current-injection pumping. The doping element, preferably a noble metal and most preferably Gold, is chosen to provide an energy level which enables an energy transition corresponding to a photon of wavelength equal to the signal wavelength to be amplified. The energy transition may be finely “adjusted” by use of standard doping techniques (such as n-type or p-type doping) to alter the conduction and valence band energy levels and thereby also the magnitude of the energy transition. A second aspect of the invention relates to the use of a non-homogeneous heat distribution which has been found to lead to optical amplification effects.Type: ApplicationFiled: January 25, 2009Publication date: July 2, 2009Applicant: Ramot At Tel Aviv University Ltd.Inventors: Shlomo Ruschin, Stanislav Stepanov
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Patent number: 7486437Abstract: Methods and corresponding apparatus for optical amplification in semiconductors, particularly indirect band-gap semiconductors, and most particularly in silicon. A first aspect of the invention employs certain doping elements to provide inter-band-gap energy levels in combination with optical or current-injection pumping—The doping element, preferably a noble metal and most preferably Gold, is chosen to provide an energy level which enables an energy transition corresponding to a photon of wavelength equal to the signal wavelength to be amplified. The energy transition may be finely “adjusted” by use of standard doping techniques (such as n-type or p-type doping) to alter the conduction and valence band energy levels and thereby also the magnitude of the energy transition. A second aspect of the invention relates to the use of a non-homogeneous heat distribution which has been found to lead to optical amplification effects.Type: GrantFiled: November 10, 2004Date of Patent: February 3, 2009Assignee: Ramot at Tel Aviv University Ltd.Inventors: Shlomo Ruschin, Stanislav Stepanov
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Publication number: 20080317423Abstract: Waveguide(s) (130) including at least partially buried channels) (120) within substrate(s) (100) having at least one substantially planar surface (110) are disclosed. According to some embodiments at least part of the channel (120) is located beneath at least a portion of the substrate (100). According to some embodiments the waveguide channel (120) includes a substantially transparent core (140) and optional cladding (160) extending through the channel (120). Alternately, an inner surface of the channel (120) is highly reflective. Furthermore, structures for use as waveguides (130) and/or as microchannels for fluid flow are disclosed herein. Also disclosed are production methods for such waveguides and said structures (130) and said structures, and methods of using such waveguides (130).Type: ApplicationFiled: September 4, 2005Publication date: December 25, 2008Applicant: RAMOT AT TEL AVIV UNIVERSITY LTD.Inventors: Stanislav Stepanov, Shlomo Ruschin
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Patent number: 7447391Abstract: A biological or chemical optical sensing device comprises at least one planar micro-resonator structure included in a light emitting waveguide, and at least one biological or chemical probe bound to at least a part of the micro-resonator structure, the probe operative to bind specifically and selectively to a respective target substance, whereby the specific and selective binding results in a parameter change in light emitted from the waveguide. In one embodiment, the micro-resonator is linear. In some embodiments, the sensing device is active, the waveguide including at least one photoluminescent material operative to be remotely pumped by a remote optical source, and the parameter change, which may include a spectral change or a quality-factor change, may be remotely read by an optical reader.Type: GrantFiled: May 5, 2005Date of Patent: November 4, 2008Assignee: Tel Aviv University Future Technology Ltd.Inventors: Asher Peled, Menachem Nathan, Shlomo Ruschin, Tali Zohar
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Patent number: 7384527Abstract: The invention provides an electrophoresis apparatus comprising an electrophoretic chamber containing at least on two-plate housing for a sieving matrix, each said at least one two-plate housing consisting of a cover plate and a plate for housing said sieving matrix, wherein said plate includes an optical waveguide array which is characterized by being aligned with respect to a reference direction such as to enable one or more light beams incident on the sieving matrix along said reference direction to be maintained well-confined along said reference direction within any desired length of interaction along the width of said sieving matrix.Type: GrantFiled: August 1, 2001Date of Patent: June 10, 2008Assignee: Sensis LtdInventors: Doron Goldberg, Zeev Weissman, Menachem Shapiro, Shlomo Ruschin
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Publication number: 20070196043Abstract: A biological or chemical optical sensing device comprises at least one planar micro-resonator structure included in a light emitting waveguide, and at least one biological or chemical probe bound to at least a part of the micro-resonator structure, the probe operative to bind specifically and selectively to a respective target substance, whereby the specific and selective binding results in a parameter change in light emitted from the waveguide. In one embodiment, the micro-resonator is linear. In some embodiments, the sensing device is active, the waveguide including at least one photoluminescent material operative to be remotely pumped by a remote optical source, and the parameter change, which may include a spectral change or a quality-factor change, may be remotely read by an optical reader.Type: ApplicationFiled: May 5, 2005Publication date: August 23, 2007Applicant: TEL AVIV UNIVERSITY FUTURE TECHNOLOGY DEVELOPMENT LTD.Inventors: Asher Peled, Menachem Nathan, Shlomo Ruschin, Tali Zohar
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Publication number: 20070041086Abstract: Methods and corresponding apparatus for optical amplification in semiconductors, particularly indirect band-gap semiconductors, and most particularly in silicon. A first aspect of the invention employs certain doping elements to provide inter-band-gap energy levels in combination with optical or current-injection pumping—The doping element, preferably a noble metal and most preferably Gold, is chosen to provide an energy level which enables an energy transition corresponding to a photon of wavelength equal to the signal wavelength to be amplified. The energy transition may be finely “adjusted” by use of standard doping techniques (such as n-type or p-type doping) to alter the conduction and valence band energy levels and thereby also the magnitude of the energy transition. A second aspect of the invention relates to the use of a non-homogeneous heat distribution which has been found to lead to optical amplification effects.Type: ApplicationFiled: November 10, 2004Publication date: February 22, 2007Inventors: Shlomo Ruschin, Stanislav Stepanov
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Patent number: 7013053Abstract: Electro-optical method and device for modulation of light are presented providing a substantially balanced voltage-phase response of the device in two orthogonal polarization directions substantially irrespective of applied voltages. The device comprises a crystal material of a predetermined orientation of the plane of propagation of light therethrough, formed with at least one waveguide channel directed in a predetermined direction, and at least two electrodes accommodated at opposite sides of the waveguide channel. The substantially balanced voltage-phase response is achieved by shifting the electrodes relative to the axis of the waveguide channel a predetermined distance in a certain direction. The device may be designed so as to operate as a phase modulator or an amplitude modulator.Type: GrantFiled: February 3, 2003Date of Patent: March 14, 2006Assignee: Ramot At Tel Aviv University Ltd.Inventors: Shlomo Ruschin, Arkady Kaplan
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Patent number: 6704473Abstract: Two N-channel deflector modules, both located in the same layer or plane of an assembly, direct polarized beams toward a polarization beam splitter. A half wave plate is interposed between one of the deflector modules and the polarization beam splitter. The polarization beam splitter combines the two beams into a single output beam, without loss of optical power, comprising 2N channels, each of which can carry a unique data stream. In alternate embodiments the group of two deflector modules and a polarization beam splitter can be stacked, optionally in combination with layers comprising a single deflector module and polarization beam splitter or mirror.Type: GrantFiled: July 2, 2001Date of Patent: March 9, 2004Assignee: Chiaro Networks Ltd.Inventors: Shlomo Ruschin, Eyal Shekel, Michael Rudman
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Patent number: 6684001Abstract: This invention discloses an optical waveguide-lens including at least one substrate having formed thereon a multiplicity of electrically controlled, phase-shifting waveguides and an electrical control signal source providing electrical signals to said multiplicity of waveguides to cause them to have a desired lens functionality.Type: GrantFiled: June 19, 2002Date of Patent: January 27, 2004Assignee: Chiaro Networks Ltd.Inventors: Eyal Shekel, Daniel Majer, Shlomo Ruschin, Guy Matmon, Jacob Julian Vecht, Yedidia Ariel
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Publication number: 20040007465Abstract: The invention provides an electrophoresis apparatus comprising an electrophoretic chamber containing at least on two-plate housing for a sieving matrix, each said at least one two-plate housing consisting of a cover plate and a plate for housing said sieving matrix, wherein said plate includes an optical waveguide array which is characterized by being aligned with respect to a reference direction such as to enable one or more light beams incident on the sieving matrix along said reference direction to be maintained well-confined along said reference direction within any desired length of interaction along the width of said sieving matrix.Type: ApplicationFiled: July 14, 2003Publication date: January 15, 2004Inventors: Doron Goldberg, Zeev Weissman, Menachem Shapiro, Shlomo Ruschin
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Patent number: 6640030Abstract: This invention discloses a selectably directable optical beam deflecting device including at least at least one substrate having formed thereon a multiplicity of waveguides, each waveguide receiving light and emitting light, the totality of light emitted by said multiplicity of waveguides producing at least one selectably directable output beam and at least one multiplexer applying electrical inputs to the at least one substrate for individually controlling the light emitted by each of the multiplicity of waveguides, thereby governing the orientation of the selectably directable output beam.Type: GrantFiled: January 24, 2002Date of Patent: October 28, 2003Assignee: Chiaro Networks Ltd.Inventors: Eyal Shekel, Daniel Majer, Shlomo Ruschin, Guy Matmon, Jacob Vecht, Yedidia Ariel
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Patent number: 6625366Abstract: A waveguide for guiding electromagnetic radiation of a given range of wavelengths includes a transparent substrate made from non-polymer material, preferably glass, into which at least one elongated channel is etched. A polymer material with a higher refractive index than that of the substrate is deposited within, and extends along, the channel, so as to define a waveguide. The regions of the substrate adjacent to the ends of the channel are preferably treated, such as by ion-exchange, to form secondary waveguide portions, optically coupled to the polymer waveguide, for input and output optical coupling with the waveguide. Also disclosed is a production method for such waveguides.Type: GrantFiled: February 20, 2001Date of Patent: September 23, 2003Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Shlomo Ruschin, Tali Hurvits
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Publication number: 20030133647Abstract: Electro-optical method and device for modulation of light are presented providing a substantially balanced voltage-phase response of the device in two orthogonal polarization directions substantially irrespective of applied voltages. The device comprises a crystal material of a predetermined orientation of the plane of propagation of light therethrough, formed with at least one waveguide channel directed in a predetermined direction, and at least two electrodes accommodated at opposite sides of the waveguide channel. The substantially balanced voltage-phase response is achieved by shifting the electrodes relative to the axis of the waveguide channel a predetermined distance in a certain direction. The device may be designed so as to operate as a phase modulator or an amplitude modulator.Type: ApplicationFiled: February 3, 2003Publication date: July 17, 2003Inventors: Shlomo Ruschin, Arkady Kaplan
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Patent number: 6584242Abstract: This invention discloses a monolithic optical light modulator including a substrate having formed monolithically thereon a modulator and a light detector providing a modulating output to said modulator.Type: GrantFiled: June 19, 2002Date of Patent: June 24, 2003Assignee: Chiaro Networks Ltd.Inventors: Eyal Shekel, Daniel Majer, Shlomo Ruschin, Guy Matmon, Jacob Julian Vecht, Yedidia Ariel
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Patent number: 6556730Abstract: This invention discloses a selectably directable optical beam generating device including at least one light source, and at least one substrate, each having formed thereon a multiplicity of waveguides, each waveguide receiving light from the at least one light source and emitting light, the totality of light emitted by the multiplicity of waveguides producing at least one selectably directable output beam.Type: GrantFiled: January 24, 2002Date of Patent: April 29, 2003Assignee: Chiaro Networks Ltd.Inventors: Eyal Shekel, Daniel Majer, Shlomo Ruschin, Guy Matmon, Jacob Julian Vecht, Yedidia Ariel
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Patent number: 6556731Abstract: This invention discloses a waveguide filter device including a necked waveguide having a relatively broad input end which receives light and allows propagation of multi-mode light waves therethrough, a narrowed neck portion at which higher modes radiate outside the waveguide and only the modes which can propagate therethrough pass therethrough and a relatively broad output end.Type: GrantFiled: June 19, 2002Date of Patent: April 29, 2003Assignee: Chiaro Networks Ltd.Inventors: Eyal Shekel, Daniel Majer, Shlomo Ruschin, Guy Matmon, Jacob Vecht, Yedidia Ariel