Abstract:
Apparatus, systems and methods are described in which an optical comb generated using a nonlinear resonator (115) is stabilized using both an atomic or molecular reference cell (125) and a reference frequency to provide feedback that is utilized to modulate the nonlinear optical resonator and the source laser. The resulting optical comb is highly stable and does not rely on internally referencing frequencies within the optical comb.
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:
Tunable receivers and techniques for receiving an electrical oscillator signal in the RF, microwave or millimeter spectral range based on phototonics technology to use both (1) phototonic or optical components and (2) electrical circuit components.
Abstract:
RF and microwave devices and techniques are disclosed for processing RF and microwave signals by using (1) photonic or optical components and (2) RF and microwave components. In some implementations, a part of the processing is performed in the RF and microwave domain such as applying a microwave or RF input signal to control an optical modulator, and another part of the processing is performed in the optical domain such as optical filtering of the modulated optical beam to select desired microwave or RF spectral components. The frequency of a selected spectral component can be tuned by either tuning the frequency of the optical beam that is modulated by the optical modulator or a filter that is used to filter modulated optical beam.
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:
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.
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:
Techniques and devices based on transverse magnetic (TM) and transverse electric (TE) modes in an optical resonator or interferometer to provide sensitive optical detection with insensitivity to a change in temperature.