Christopher T. DeRose
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View article: Suspended waveguides on membrane and needle structures towards photonic atom trap integrated platforms
Suspended waveguides on membrane and needle structures towards photonic atom trap integrated platforms Open
An atom trap integrated platform (ATIP) comprises a substrate, a membrane, and a suspended waveguide. The substrate has an opening formed therein. The membrane extends across a portion of the substrate opening. The suspended waveguide is f…
View article: Monolithic integration of optical waveguides with metal routing layers
Monolithic integration of optical waveguides with metal routing layers Open
A photonic integrated circuit and a method for its manufacture are provided. In an embodiment, an intermetal dielectric layer, for example, a silicon oxide layer, is contiguous between an upper metal layer and a lower metal layer on a subs…
View article: High-performance silicon photonic single-sideband modulators for cold-atom interferometry
High-performance silicon photonic single-sideband modulators for cold-atom interferometry Open
The laser system is the most complex component of a light-pulse atom interferometer (LPAI), controlling frequencies and intensities of multiple laser beams to configure quantum gravity and inertial sensors. Its main functions include cold-…
View article: Miniaturized vacuum package and methods of making same
Miniaturized vacuum package and methods of making same Open
The present disclosure relates to an integrated package having an active area, an electrical routing circuit, an optical routing circuit, and a vacuum vessel. Methods of making such a package are also described herein.
View article: Compact laser source with frequency modulators generating multiple lines
Compact laser source with frequency modulators generating multiple lines Open
A compact laser source and a single sideband modulator used therein is disclosed. The compact laser source includes a seed laser and one or more channels, with each channel generating one or more output laser beams having corresponding dif…
View article: System and method of phase-locked fiber interferometry
System and method of phase-locked fiber interferometry Open
A system and method are provided for optical homodyne detection in an optical fiber interferometer. A detection signal is obtained by interfering an optical data signal with a phase-modulated optical reference signal. The modulator for the…
View article: High density optical waveguide using hybrid spiral pattern
High density optical waveguide using hybrid spiral pattern Open
A hybrid spiral waveguide geometry is proposed that exhibits essentially zero curvature (i.e., infinite bend radius) at the center of the spiral (similar to a Fermat spiral), with the curvature then increasing in value as the spiral moves …
View article: Heterogeneously integrated electro-optic modulator
Heterogeneously integrated electro-optic modulator Open
In an electro-optical modulator, an electro-optical modulation layer is bonded to a cladding layer that overlies a substrate. A modulation zone waveguide is optically coupled to the electro-optical modulation layer and optically coupled to…
View article: Transceivers and receivers for discrete-variable quantum key distribution
Transceivers and receivers for discrete-variable quantum key distribution Open
Various technologies for performing discrete-variable (DV) quantum key distribution (QKD) with integrated electro-optical circuits are described herein. An integrated DV-QKD system uses Mach-Zehnder modulators (MZMs) to modulate a polariza…
View article: Method and apparatus of highly linear optical modulation
Method and apparatus of highly linear optical modulation Open
In a new optical intensity modulator, a nonlinear change in refractive index is used to balance the nonlinearities in the optical transfer function in a way that leads to highly linear optical intensity modulation.
View article: Two-dimensional APDs and SPADs and related methods
Two-dimensional APDs and SPADs and related methods Open
Avalanche photodiodes (APDs) and single photon avalanche detectors (SPADs) are provided with a lateral multiplication region that provides improved amplification through increased impact ionization.
View article: High-speed photonic modulator designs
High-speed photonic modulator designs Open
An optical device includes a microdisk optical resonator element. The microdisk resonator element is formed on a substrate and has upper and lower portions respectively distal and proximal the substrate. An arcuate semiconductor contact re…
View article: Resonant optical device with a microheater
Resonant optical device with a microheater Open
A resonant photonic device is provided. The device comprises an optical waveguiding element, such as an optical resonator, that includes a diode junction region, two signal terminals configured to apply a bias voltage across the junction r…
View article: Method and apparatus of wide-angle optical beamsteering from a nanoantenna phased array
Method and apparatus of wide-angle optical beamsteering from a nanoantenna phased array Open
An optical beam-steering apparatus is provided. The apparatus includes one or more optical waveguides and at least one row of metallic nanoantenna elements overlying and electromagnetically coupled to a respective waveguide. In each such r…
View article: Trapped ion platform with optical input and output
Trapped ion platform with optical input and output Open
In disclosed apparatus, a plurality of optical waveguides monolithically integrated on a surface ion trap substrate deliver light to the trapping sites. Electrical routing traces defined in one or more metallization levels deliver electric…
View article: Silicon photonics thermal phase shifter with reduced temperature range
Silicon photonics thermal phase shifter with reduced temperature range Open
Optical devices, phased array systems and methods of phase-shifting an input signal are provided. An optical device includes a microresonator and a waveguide for receiving an input optical signal. The waveguide includes a segment coupled t…
View article: Method and apparatus for optical phase error correction
Method and apparatus for optical phase error correction Open
The phase value of a phase-sensitive optical device, which includes an optical transport region, is modified by laser processing. At least a portion of the optical transport region is exposed to a laser beam such that the phase value is ch…
View article: Integrated optical transceiver with electronically controlled optical beamsteering
Integrated optical transceiver with electronically controlled optical beamsteering Open
A beam-steering optical transceiver is provided. The transceiver includes one or more modules, each comprising an antenna chip and a control chip bonded to the antenna chip. Each antenna chip has a feeder waveguide, a plurality of row wave…
View article: Transceivers and receivers for quantum key distribution and methods pertaining thereto
Transceivers and receivers for quantum key distribution and methods pertaining thereto Open
Various technologies for performing continuous-variable (CV) and discrete-variable (DV) quantum key distribution (QKD) with integrated electro-optical circuits are described herein. An integrated DV-QKD system uses Mach-Zehnder modulators …
View article: RF Waveguide Pattern Engineering to Mitigate Bonding Surface Nonuniformities in CMOS Compatible Fabrication Processes
RF Waveguide Pattern Engineering to Mitigate Bonding Surface Nonuniformities in CMOS Compatible Fabrication Processes Open
Heterogeneously integrating silicon photonic devices and circuits with other optical materials (III/V semiconductors, LiNbO3, and so on) is a promising approach toward bolstering the capabilities of silicon photonics and improving the manu…
View article: Suspended Membrane Waveguides towards a Photonic Atom Trap Integrated Platform .
Suspended Membrane Waveguides towards a Photonic Atom Trap Integrated Platform . Open
critical thermal management features that enable this large power handling. This work represents a significant step toward an integrated platform for coupling neutral atom quantum systems to photonic and electronic integrated circuits on s…
View article: High-Performance Silicon Photonic Single-Sideband Modulators for Cold Atom Interferometry
High-Performance Silicon Photonic Single-Sideband Modulators for Cold Atom Interferometry Open
The most complicated and challenging system within a light-pulse atom interferometer (LPAI) is the laser system, which controls the frequencies and intensities of multiple laser beams over time to configure quantum gravity and inertial sen…
View article: Three-Photon Optical Pumping for Trapped Ion Quantum Computing
Three-Photon Optical Pumping for Trapped Ion Quantum Computing Open
In this report we describe the testing of a novel scheme for state preparation of trapped ions in a quantum computing setup. This technique optimally would allow for similar precision and speed of state preparation while allowing for indiv…
View article: Integrated Optical Addressing of a Trapped Ytterbium Ion
Integrated Optical Addressing of a Trapped Ytterbium Ion Open
We report on the characterization of heating rates and photo-induced electric charging on a microfabricated surface ion trap with integrated waveguides. Microfabricated surface ion traps have received considerable attention as a quantum in…
View article: Gamma radiation effects on passive silicon photonic waveguides using phase sensitive methods
Gamma radiation effects on passive silicon photonic waveguides using phase sensitive methods Open
Passive silicon photonic waveguides are exposed to gamma radiation to understand how the performance of silicon photonic integrated circuits is affected in harsh environments such as space or high energy physics experiments. The propagatio…
View article: III/V silicon hybrid laser based on a resonant Bragg structure
III/V silicon hybrid laser based on a resonant Bragg structure Open
We demonstrate a laser tunable in intensity with gigahertz tuning speed based on a III/V reflective semiconductor optical amplifier (RSOA) coupled to a silicon photonic chip. The silicon chip contains a Bragg-based Fabry–Perot resonator to…