Patent application number | Description | Published |
20090208205 | Photonic Based Cross-Correlation Homodyne Detection with Low Phase Noise - In one aspect, this document provides an implementation of a system for characterizing an oscillator. This system includes an input port that receives an oscillation signal from an oscillator under test; an input port signal splitter that splits the received oscillation signal into a first oscillation signal and a second oscillation signal; a first photonic signal processing branch circuit that processes the first oscillation signal to produce a first branch output signal; a second photonic signal processing branch circuit that processes the second oscillation signal to produce a second branch output signal; a dual channel signal analyzer that receives the first and second branch output signals to measure noise in the received oscillation signal; and a computer controller that controls the first and second photonic signal processing branch circuits and the dual channel signal analyzer to control measurements of the noise in the received oscillation signal. | 08-20-2009 |
20090310629 | Optical locking based on optical resonators with high quality factors - Techniques and devices for providing optical locking of optical resonators and lasers. | 12-17-2009 |
20100118375 | Tunable Single Sideband Modulators Based On Electro-Optic Optical Whispering Gallery Mode Resonators and Their Applications - Photonic devices and techniques based on tunable single sideband (SSB) modulation in whispering gallery mode resonators formed of electro-optic materials to effectuate coupling between whispering gallery modes of different polarizations. | 05-13-2010 |
20110097078 | MEASURING PHASE NOISE IN RADIO FREQUENCY, MICROWAVE OR MILLIMETER SIGNALS BASED ON PHOTONIC DELAY - Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay. | 04-28-2011 |
20110110387 | OPTICAL LOCKING BASED ON OPTICAL RESONATORS WITH HIGH QUALITY FACTORS - Techniques and devices for providing optical locking of optical resonators and lasers. | 05-12-2011 |
20110255094 | Optical gyroscope sensors based on optical whispering gallery mode resonators - Optical gyroscope devices based on optical whispering gallery mode resonators that measure rotations based on rotation-induced optical phase shift in optical whispering gallery mode resonators. | 10-20-2011 |
20120039346 | Feedback-enhanced self-Injection locking of lasers to optical resonators - Techniques and devices that lock and stabilize a laser to an optical resonator via self-injection locking based on a reflection feedback. A whispering gallery mode optical resonator can be implemented to provide both the optical filtering and injection feedback based on the reflection feedback from feedback optics outside the optical resonator. | 02-16-2012 |
20120194893 | TUNABLE PHOTONIC MICROWAVE OR RADIO FREQUENCY RECEIVERS BASED ON ELECTRO-OPTIC OPTICAL WHISPERING GALLERY MODE RESONATORS - Photonic devices and techniques based on tunable single sideband (SSB) modulation in whispering gallery mode resonators formed of electro-optic materials to construct RF or microwave receivers. | 08-02-2012 |
20120195590 | MEASURING PHASE NOISE IN RADIO FREQUENCY, MICROWAVE OR MILLIMETER SIGNALS BASED ON PHOTONIC DELAY - Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay. | 08-02-2012 |
20120294319 | Generation of single optical tone, RF oscillation signal and optical comb in a triple-oscillator device based on nonlinear optical resonator - Techniques and devices based on optical resonators made of nonlinear optical materials to form triple-oscillator devices for generating a single optical tone, a radio frequency (RF) oscillation signal and an optical frequency comb signal having different optical frequencies. | 11-22-2012 |
20120320449 | STABILIZING RF OSCILLATOR BASED ON OPTICAL RESONATOR - Techniques, devices and systems that stabilize an RF oscillator by using an optical resonator that is stabilized relative to a master RF oscillator with acceptable frequency stability performance. In the examples described, the optical resonator is stabilized relative to the master RF oscillator by using a frequency stability indicator based on two different optical modes of the optical resonator. The RF oscillator to be stabilized is then locked to the stabilized optical resonator to achieve the acceptable RF stability in the RF oscillator. | 12-20-2012 |
20120327497 | PARAMETRIC REGENERATIVE OSCILLATORS BASED ON OPTO-ELECTRONIC FEEDBACK AND OPTICAL REGENERATION VIA NONLINEAR OPTICAL MIXING IN WHISPERING GALLERY MODE OPTICAL RESONATORS - Techniques and devices based on optical resonators made of nonlinear optical materials and nonlinear wave mixing to generate RF or microwave oscillations using an active opto-electronic loop. | 12-27-2012 |
20130003766 | COMPACT OPTICAL ATOMIC CLOCKS AND APPLICATIONS BASED ON PARAMETRIC NONLINEAR OPTICAL MIXING IN WHISPERING GALLERY MODE OPTICAL RESONATORS - Techniques and devices based on optical resonators made of nonlinear optical materials and nonlinear wave mixing to generate optical combs that are stabilized relative to an atomic reference. | 01-03-2013 |
20130258435 | WIDE-BAND RF PHOTONIC RECEIVERS AND OTHER DEVICES USING TWO OPTICAL MODES OF DIFFERENT QUALITY FACTORS - This document provides techniques, apparatus and designs for using electro-optic WGM resonators that support two different families of optical WGM modes with different quality factors in various applications. A radio frequency (RF) resonator is formed on the optical resonator and structured to supply an RF field and spatially overlaps the RF field of the RF resonator with the first and second optical whispering gallery modes to cause RF energy in the RF field at a first RF carrier frequency to couple with the first optical whispering gallery mode and RF energy in the RF field at a second RF carrier frequency to couple with the second optical whispering gallery mode. | 10-03-2013 |
20130259072 | TUNABLE OPTO-ELECTRONIC OSCILLATOR HAVING OPTICAL RESONATOR FILTER OPERATING AT SELECTED MODULATION SIDEBAND - Opto-electronic oscillator (OEO) devices include an optical resonator filter to block the strong laser light at the laser carrier frequency from entering the optical resonator filter and to select one of the weak modulation sidebands, which is in resonance with the optical resonator filter, to be coupled into the optical resonator filter. The laser light at the laser carrier frequency and other modulation sidebands bypass the optical resonator filter to reach a fast photodetector. The laser light in the selected modulation sideband in the optical resonator filter is then coupled out to mix with the laser light at the laser carrier frequency and other modulation sidebands at the fast photodetector to produce the detector output as the input to the electrical part of the opto-electronic loop to produce the OEO oscillation. | 10-03-2013 |
20140321485 | Resonator Based External Cavity Laser - An external cavity laser comprises a gain medium and an external cavity resonator without the use of a semi-reflective surface placed between the gain medium and the resonator. Radiation from the gain medium is reflected back to the gain medium by one or more resonant backscattering regions of the resonator, such that the entire optical path between the gain medium and the external cavity resonator could be free from a reflective surface. | 10-30-2014 |