Abstract: Examples and implementations of photonic devices and techniques based on whispering gallery mode resonators formed of electro-optic materials to effectuate cross modulation between whispering gallery modes of different polarizations in the resonators.

Abstract: RF receivers based on whispering gallery mode resonators.

Abstract: Techniques and devices that stabilize a laser to a whispering gallery mode optical resonator.

Abstract: Multi-loop opto-electronic oscillators using tunable RF or microwave filters that achieve signal filtering in RF or microwave frequencies by optical filtering and signal tuning by optical tuning.

Abstract: Whispering-gallery-mode (WGM) resonators configured to support only a single whispering gallery mode.

Abstract: Devices and techniques for achieving signal filtering in RF or microwave frequencies by optical filtering using two separate optical paths. Each optical path may include one or more optical resonators to achieve desired optical filtering.

Abstract: This application describes coupled and non-coupled opto-electronic oscillators with enhanced performance. Coupled OEOs implement a dispersion compensation mechanism to reduce dispersion-induced optical loss, a polarization control mechanism to reduce polarization-dependent optical loss, or a combination of the dispersion compensation mechanism and the polarization control mechanism to enhance the oscillator performance.

Abstract: Tunable receivers and techniques for receiving an electrical oscillator signal in the RF, microwave or millimeter spectral range based on photonics technology to use both (1) photonic or optical components and (2) electronic circuit components.

Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a system including an optical resonator and an optical element having a periodic structure for coupling of light into the optical resonator.

Abstract: This application describes coupled and non-coupled opto-electronic oscillators with enhanced performance. Coupled OEOs implement a dispersion compensation mechanism to reduce dispersion-induced optical loss, a polarization control mechanism to reduce polarization-dependent optical loss, or a combination of the dispersion compensation mechanism and the polarization control mechanism to enhance the oscillator performance.

Abstract: Devices and techniques for achieving signal filtering in RF or microwave frequencies by optical filtering via two optical resonators in two separate optical paths. One optical resonator is tunable to tune the filtering in RF or microwave frequencies. Tunable opto-electronic oscillators may be constructed based on described filters.

Abstract: This application describes use of an opto-electronic feedback in oscillators to suppress phase noise based on the high Q factor of the opto-electronic feedback.

Abstract: Multi-loop opto-electronic oscillators using tunable RF or microwave filters that achieve signal filtering in RF or microwave frequencies by optical filtering and signal tuning by optical tuning.

Abstract: Tunable optical filters using whispering-gallery-mode (WGM) optical resonators-are described. The WGM optical resonator in a filter exhibits an electro-optical effect and hence is tunable by applying a control electrical signal.

Abstract: Opto-electronic regenerative circuits and devices for processing RF or microwave signals based on opto-electronic oscillator designs.

Abstract: Techniques and devices using whispering gallery mode (WGM) optical resonators, where the optical materials of the WGM resonators exhibit an electro-optical effect to perform optical modulation. Examples of actively mode-locked lasers and other devices are described.

Abstract: This application describes examples and implementations of optical devices and techniques based on use of whispering gallery mode (WGM) optical resonators that have nonlinear optical materials in multiple sectors where nonlinear coefficients of two adjacent sectors are oppositely poled.

Abstract: Devices with two or more coupled resonators to produce narrow spectral responses due to interference of signals that transmit through the resonators and techniques for operating such devices to achieve certain operating characteristics are described. The devices may be optical devices where optical resonators such as whispering gallery mode resonators may be used. In one implementation, at least one of the coupled optical resonators is a tunable resonator and is tuned to change its resonance frequency to tune the spectral response of the device. The described devices and techniques may be applied in optical filters, optical delays, optical waveform generators, and other applications.

Abstract: Optical filters having at least two coupled whispering-gallery-mode (WGM) optical resonators to produce a second order or higher order filter function with a desired spectral profile. At least one of the coupled WGM optical resonators may be tunable by a control signal to adjust the filtering function.

Abstract: Opto-electronic regenerative circuits and devices for processing RF or microwave signals based on opto-electronic oscillator designs.