Patents by Inventor Peter Delfyett
Peter Delfyett 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: 10942417Abstract: A tunable comb generator may include a light source to generate an optical signal, an intensity modulator to modulate an intensity of the optical signal from the light source based on a RF drive signal, a frequency-locking loop (FLL) to maintain an optical frequency of the optical signal received from the intensity modulator at a target optical frequency corresponding to a resonance frequency of a periodic optical filter in the FLL, and an optoelectronic oscillator (OEO) loop. The OEO loop may include a photodetector to generate the RF drive signal based on the optical signal from the FLL, a tunable phase shifter to select a resonance frequency of the OEO loop corresponding to a harmonic of the resonance frequency of the periodic optical filter, and one or more phase modulators to generate an optical comb signal by modulating a portion of the optical signal from the FLL.Type: GrantFiled: February 21, 2020Date of Patent: March 9, 2021Assignee: University of Central Florida Research Foundation, Inc.Inventors: Michael Plascak, Ricardo Bustos Ramirez, Peter Delfyett
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Publication number: 20200192185Abstract: A tunable comb generator may include a light source to generate an optical signal, an intensity modulator to modulate an intensity of the optical signal from the light source based on a RF drive signal, a frequency-locking loop (FLL) to maintain an optical frequency of the optical signal received from the intensity modulator at a target optical frequency corresponding to a resonance frequency of a periodic optical filter in the FLL, and an optoelectronic oscillator (OEO) loop. The OEO loop may include a photodetector to generate the RF drive signal based on the optical signal from the FLL, a tunable phase shifter to select a resonance frequency of the OEO loop corresponding to a harmonic of the resonance frequency of the periodic optical filter, and one or more phase modulators to generate an optical comb signal by modulating a portion of the optical signal from the FLL.Type: ApplicationFiled: February 21, 2020Publication date: June 18, 2020Inventors: Michael Plascak, Ricardo Bustos Ramirez, Peter Delfyett
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Patent number: 10585332Abstract: A tunable electro-optic modulation (EOM) comb generator includes a frequency locking optoelectronic oscillator (OEO) loop including RF electrical components including a phase shifter (PS1), a splitter, and optical components including an intensity modulator (IM) coupled to receive light from a light source and to couple modulated light generated to a frequency locking loop including a frequency shifter, a first phase modulator (PM1), and a periodic optical filter (POF), such as an etalon or resonator. The POF is for optically filtering the OEO loop to generate an optical output and the splitter is for generating RF electrical outputs including at least one RF output coupled to an input of the IM and another RF output coupled to an EO comb including at least a phase modulator. The EO comb combines the optical output and the another RF output to generate a broadband optical frequency comb output.Type: GrantFiled: March 6, 2019Date of Patent: March 10, 2020Assignee: University of Central Florida Research Foundation, Inc.Inventors: Michael Plascak, Ricardo Bustos Ramirez, Peter Delfyett
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Publication number: 20190278155Abstract: A tunable electro-optic modulation (EOM) comb generator includes a frequency locking optoelectronic oscillator (OEO) loop including RF electrical components including a phase shifter (PS1), a splitter, and optical components including an intensity modulator (IM) coupled to receive light from a light source and to couple modulated light generated to a frequency locking loop including a frequency shifter, a first phase modulator (PM1), and a periodic optical filter (POF), such as an etalon or resonator. The POF is for optically filtering the OEO loop to generate an optical output and the splitter is for generating RF electrical outputs including at least one RF output coupled to an input of the IM and another RF output coupled to an EO comb including at least a phase modulator. The EO comb combines the optical output and the another RF output to generate a broadband optical frequency comb output.Type: ApplicationFiled: March 6, 2019Publication date: September 12, 2019Applicant: University of Central Florida Research Foundation, Inc.Inventors: Michael Plascak, Ricardo Bustos Ramirez, Peter Delfyett
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Patent number: 10326251Abstract: A mode-locked laser (MLL) that produces ultra-low phase noise optical and RF outputs, includes two nested resonant optical cavities including an optical fiber-based cavity and an etalon, and a three bandwidth Pound-Drever-Hall (PDH) frequency stabilizer assembly incorporating three different optical bandpass filters. The optical fiber-based cavity is characterized by a free spectral range, FSRfiber, and the etalon is characterized by a free spectral range, FSRfilter, wherein FSRfilter/FSRfiber is an integer equal to or greater than 2. A method of generating ultra-low phase noise optical and RF outputs is disclosed. Optical and RF outputs have a phase noise that is less than ?100 dBc/Hz at 1 Hz and less than ?150 dBc at 10 KHz.Type: GrantFiled: June 7, 2016Date of Patent: June 18, 2019Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.Inventors: Peter Delfyett, Anthony Klee, Kristina Bagnell
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Publication number: 20180115136Abstract: A mode-locked laser (MLL) that produces ultra-low phase noise optical and RF outputs, includes two nested resonant optical cavities including an optical fiber-based cavity and an etalon, and a three bandwidth Pound-Drever-Hall (PDH) frequency stabilizer assembly incorporating three different optical bandpass filters. The optical fiber-based cavity is characterized by a free spectral range, FSRfiber, and the etalon is characterized by a free spectral range, FSRfilter, wherein FSRfilter/FSRfiber is an integer equal to or greater than 2. A method of generating ultra-low phase noise optical and RF outputs is disclosed. Optical and RF outputs have a phase noise that is less than ?100 dBc/Hz at 1 Hz and less than ?150 dBc at 10 KHz.Type: ApplicationFiled: June 7, 2016Publication date: April 26, 2018Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.Inventors: Peter Delfyett, Anthony Klee, Kristina Bagnell
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Patent number: 9022037Abstract: A laser ablation method and apparatus uses a laser device to generate a pulsed laser using a laser device and to project the pulsed laser onto an ablation target to be ablated. A probe is then used to measure an indicative property of the ablation target or of the pulsed laser projected on the ablation target. A control loop is used to optimize ablation effect by generating a feedback signal according to the measured indicative property, sending the feedback signal to a control unit, and adjusting an output parameter of the pulsed laser according to the feedback signal. The measured indicative property may be a size of the laser beam spot or a material composition. The ablation, the feedback and the adjustment may be performed dynamically.Type: GrantFiled: September 12, 2005Date of Patent: May 5, 2015Assignee: Raydiance, Inc.Inventors: Peter Delfyett, Richard Stoltz
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Publication number: 20110255871Abstract: The present invention relates to advances in the field of reconfigurable optical networks. In particular, the present invention provides improvements in the technology of light sources for use in optical networks. The optical network according to the present invention includes a single light source that can be used to emit all of the bands and channels needed for transmission. In particular, the single light source in the optical network of the present invention is a mode-locked laser.Type: ApplicationFiled: October 21, 2010Publication date: October 20, 2011Applicants: UNIVERSITY OF CENTRAL FLORIDA, TELCORDIA TECHNOLOGIES, INC.Inventors: Shahab Etemad, Peter Delfyett
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Patent number: 7929582Abstract: Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs); combining the coherent optical beams into a combined coherent optical beam; and tuning the combined beam to a selected frequency range to output a coherent optical beam having only the selected frequency range. In some embodiments, the SOAs are arranged in parallel within a resonant cavity, and each coherent optical beam has a different center wavelength that overlaps in bandwidth with another one of the coherent optical beams.Type: GrantFiled: June 30, 2009Date of Patent: April 19, 2011Assignee: University of Central Florida Research Foundation, Inc.Inventors: Peter Delfyett, Jannick Rolland, Panomsak Meemon, Kye-Sung Lee
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Patent number: 7848655Abstract: The present invention relates to advances in the field of reconfigurable optical networks. In particular, the present invention provides improvements in the technology of light sources for use in optical networks. The optical network according to the present invention includes a single light source that can be used to emit all of the bands and channels needed for transmission. In particular, the single light source in the optical network of the present invention is a mode-locked laser.Type: GrantFiled: August 27, 2004Date of Patent: December 7, 2010Assignees: Telcordia Technologies, Inc., University of Central FloridaInventors: Shahab Etemad, Peter Delfyett
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Patent number: 7800763Abstract: Methods, systems, apparatus and devices for using a modified PDH technique to measure the FSR of an etalon with one part per 104 precision.Type: GrantFiled: June 13, 2007Date of Patent: September 21, 2010Assignee: University of Central Florida Research Foundation, Inc.Inventors: Sangyoun Gee, Peter Delfyett, Sarper Ozharar, Franklyn Quinlan
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Publication number: 20100221009Abstract: Apparatus and system for transmitting and receiving optical code division multiple access data over an optical network. The apparatus comprises a spectral phase decoder for decoding the encoded optical signal to produce a decoded signal, a time gate for temporally extracting a user signal from the decoded signal, and a demodulator that is operable to extract user data from the user signal. The system preferably comprises a source for generating a sequence of optical pulses, each optical pulse comprising a plurality of spectral lines uniformly spaced in frequency so as to define a frequency bin, a data modulator associated with a subscriber and operable to modulate the sequence of pulses using subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and operable to spectrally encode the modulated data signal to produce an encoded data signal.Type: ApplicationFiled: February 22, 2010Publication date: September 2, 2010Applicants: TELCORDIA TECHNOLOGIES, INC., University of Central Florida Research Foundation, Inc. (UCFRF)Inventors: Shahab Etemad, Paul Toliver, Janet Lehr Jackel, Ronald Charles Menendez, Stefano Galli, Thomas Clyde Banwell, Peter Delfyett
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Patent number: 7755755Abstract: A method is provided for identifying a contaminant in a gaseous space. The method includes: generating a broadband optical waveform; shaping the optical waveform to match an expected waveform for a known contaminant; and transmitting the shaped optical waveform towards an unknown contaminant. Upon receiving a reflected optical waveform from the unknown contaminant, determining whether the unknown contaminant correlates to the known contaminant based on the reflected waveform.Type: GrantFiled: February 14, 2007Date of Patent: July 13, 2010Assignees: Harris Corporation, Lucents Technologies Inc., University of Central Florida Foundations, Inc.Inventors: John Richard DeSalvo, Geoffrey Lynn Burdge, Bruce W. FitzGerald, Young-Kai Chen, Andreas Leven, Peter Delfyett
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Patent number: 7729616Abstract: Apparatus and system for transmitting and receiving optical code division multiple access data over an optical network. The apparatus comprises a spectral phase decoder for decoding the encoded optical signal to produce a decoded signal, a time gate for temporally extracting a user signal from the decoded signal, and a demodulator that is operable to extract user data from the user signal. The system preferably comprises a source for generating a sequence of optical pulses, each optical pulse comprising a plurality of spectral lines uniformly spaced in frequency so as to define a frequency bin, a data modulator associated with a subscriber and operable to modulate the sequence of pulses using subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and operable to spectrally encode the modulated data signal to produce an encoded data signal.Type: GrantFiled: February 18, 2005Date of Patent: June 1, 2010Assignees: Telcordia Technologies, Inc., University of Central FloridaInventors: Shahab Etemad, Paul Toliver, Janet Lehr Jackel, Ronald Charles Menendez, Stefano Galli, Thomas Clyde Banwell, Peter Delfyett
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Publication number: 20090323738Abstract: Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs); combining the coherent optical beams into a combined coherent optical beam; and tuning the combined beam to a selected frequency range to output a coherent optical beam having only the selected frequency range. In some embodiments, the SOAs are arranged in parallel within a resonant cavity, and each coherent optical beam has a different center wavelength that overlaps in bandwidth with another one of the coherent optical beams.Type: ApplicationFiled: June 30, 2009Publication date: December 31, 2009Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATIONInventors: Peter Delfyett, Jannick Rolland, Panomsak Meemon, Kye-Sung Lee
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Patent number: 7558302Abstract: Methods, devices and systems for generating ultrashort optical linear chirped pulses with very high power by amplifying the pulses so that their temporal duration is longer than the storage time of the amplifying medium. The additional gain factor is related to the ratio of the storage time to the stretched pulse. A preferred embodiment connects a mode locked laser source that generates optical pulses whose duration is stretched with a chirped fiber Bragg grating. Embodiments include methods, devices and systems causing an extreme chirped pulse amplifier (XCPA) effect in an oscillator.Type: GrantFiled: March 16, 2007Date of Patent: July 7, 2009Assignee: University of Central Florida Research Foundation, Inc.Inventors: Peter Delfyett, Kyungbum Kim, Bojan Resan
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Publication number: 20080195335Abstract: A method is provided for identifying a contaminant in a gaseous space. The method includes: generating a broadband optical waveform; shaping the optical waveform to match an expected waveform for a known contaminant; and transmitting the shaped optical waveform towards an unknown contaminant. Upon receiving a reflected optical waveform from the unknown contaminant, determining whether the unknown contaminant correlates to the known contaminant based on the reflected waveform.Type: ApplicationFiled: February 14, 2007Publication date: August 14, 2008Inventors: John Richard DeSalvo, Geoffrey Lynn Burdge, Bruce W. FitzGerald, Young-Kai Chen, Andreas Leven, Peter Delfyett
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Publication number: 20070036553Abstract: Apparatus and system for transmitting and receiving optical code division multiple access data over an optical network. The apparatus comprises a spectral phase decoder for decoding the encoded optical signal to produce a decoded signal, a time gate for temporally extracting a user signal from the decoded signal, and a demodulator that is operable to extract user data from the user signal. The system preferably comprises a source for generating a sequence of optical pulses, each optical pulse comprising a plurality of spectral lines uniformly spaced in frequency so as to define a frequency bin, a data modulator associated with a subscriber and operable to modulate the sequence of pulses using subscriber data to produce a modulated data signals and a Hadamard encoder associated with the data modulator and operable to spectrally encode the modulated data signal to produce an encoded data signal.Type: ApplicationFiled: February 18, 2005Publication date: February 15, 2007Inventors: Shahab Etemad, Paul Toliver, Janet Jackel, Ronald Menendez, Stefano Galli, Thomas Banwell, Peter Delfyett
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Publication number: 20060084957Abstract: A laser ablation method and apparatus uses a laser device to generate a pulsed laser using a laser device and to project the pulsed laser onto an ablation target to be ablated. A probe is then used to measure an indicative property of the ablation target or of the pulsed laser projected on the ablation target. A control loop is used to optimize ablation effect by generating a feedback signal according to the measured indicative property, sending the feedback signal to a control unit, and adjusting an output parameter of the pulsed laser according to the feedback signal. The measured indicative property may be a size of the laser beam spot or a material composition. The ablation, the feedback and the adjustment may be performed dynamically.Type: ApplicationFiled: September 12, 2005Publication date: April 20, 2006Inventors: Peter Delfyett, Richard Stoltz
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Publication number: 20060064079Abstract: The present invention includes a method of surgical material removal from a body by optical-ablation with controlled pulse energy from an amplifier including inputting an ablation-threshold-pulse-energy-for-material-being-ablated signal; controlling the energy of a pulse and the pulse repetition rate and by knowing the type of material being removed, the system can control the removal to predetermined rate and, thus knowing the removal rate, it can know how long to run to stop at the predetermined volume.Type: ApplicationFiled: August 11, 2004Publication date: March 23, 2006Inventors: Richard Stoltz, Peter Delfyett