Abstract: A radio frequency (RF) transceiver comprising: a transmitter configured to produce a plurality of optical carriers; a multi-wavelength electro-optic modulator configured to receive the plurality of optical carriers from the transmitter, wherein the electro-optic modulator is configured to modulate each optical carrier using a same input RF signal, but with a different efficiency for each optical carrier so as to generate an arbitrary number of RF links with various efficiencies using a single modulation electrode; and a receiver designed to produce a synthesized transfer function based on a truncated Fourier Series and configured to use the synthesized transfer function to adjust intermodulation distortion response to optimize dynamic range for the transceiver's operating resolution bandwidth and noise characteristics.

Abstract: A tunable parametric mixer comprising a pump laser, a nonlinear waveguide, and a refractive index tuner. The pump laser is configured to generate pump photons. The nonlinear waveguide comprises a cladding and a core. The core is made of nonlinear optical material and the cladding in made of a material with a tunable index of refraction. The nonlinear waveguide is configured to convert the pump photons into signal and idler photons. The refractive index tuner is configured to change the refractive index of the cladding to dynamically tune the dispersion properties of the nonlinear waveguide in order to alter a spectral location of a gain band of the parametric mixer.

Abstract: A system for stabilizing the temperature sensitivity in photonic circuits comprising a thermoelastic cladding directly overlaid on a photonic circuit, wherein the properties of the thermoelastic cladding are such that the temperature of the photonic circuit is passively stabilized, such as by adjustment of the effective refractive index of the photonic circuit. The thermoelastic cladding may comprise a negative thermo-optic coefficient and the photonic circuit has a positive thermo-elastic coefficient. The thermoelastic cladding may be a liquid, solid, or gas, and may be contained within a chamber having an inlet and an outlet. A pressure sensor may be contained within the chamber for monitoring pressure. The sensor can detect whether the fluid/gas has reached its maximum expansion and can send a signal when that happens. The pressure sensor is connected in a feedback loop and it sends an alarm once the chamber pressure is at a maximum.

Abstract: An RF channelizer comprising: a master laser for generating a reference beam; a splitter for splitting the reference beam into first and second beams; first and second modulator modules for converting the first and second beams into first and second modulated beams; first and second seed tone generators for deriving first and second seed tones; first and second parametric mixers for converting the first and second seed tones into first and second combs; a signal modulator for modulating a received RF signal onto the first comb; first and second optical filters for separating the first and second combs into pluralities of first and second filtered beams with center frequencies corresponding to the second comb lines; and a coherent detection array for selecting, combining, and detecting corresponding pairs from first and second filtered beams providing at the output a contiguous bank of channelized signals covering the bandwidth of the RF signal.

Abstract: A system for stabilizing the temperature sensitivity in photonic circuits comprising a thermoelastic cladding directly overlaid on a photonic circuit, wherein the properties of the thermoelastic cladding are such that the temperature of the photonic circuit is passively stabilized, such as by adjustment of the effective refractive index of the photonic circuit. The thermoelastic cladding may comprise a negative thermo-optic coefficient and the photonic circuit has a positive thermo-elastic coefficient. The thermoelastic cladding may be a liquid, solid, or gas, and may be contained within a chamber having an inlet and an outlet. A pressure sensor may be contained within the chamber for monitoring pressure. The sensor can detect whether the fluid/gas has reached its maximum expansion and can send a signal when that happens. The pressure sensor is connected in a feedback loop and it sends an alarm once the chamber pressure is at a maximum.

Abstract: An optical domain spectrum analyzer/channelizer employs multicasting of an analog signal onto a wavelength division multiplexing grid, followed by spectral slicing using a periodic optical domain filter. This technique allows for a large number of high resolution channels. Wideband, 100% duty cycle, spectrum analysis or channelization is made possible permitting continuous time wideband spectral monitoring. The instantaneous bandwidth of the spectrum analyzer/channelizer is equal to the full radio frequency bandwidth of the analyzer/channelizer.

Abstract: The present invention relates to nanoscale transduction systems that produce reversible signals to facilitate detection. In one respect, the invention relates to the analysis of molecular binding events using higher order signaling nanoscale constructs, or “nanomachines”, that allow nanostructures to be individually detectable, even in the midst of high background noise. Such systems are particularly useful for improving the performance of rare target detection methods, as well as being generally useful in any field in which sensitivity, discrimination and confidence in detection are important.