18 results about "Optical ring resonators" patented technology

Embodiments disclosed herein include an apparatus that includes a substrate with a first optical waveguide within the substrate, an optical ring resonator within the substrate, and a second optical waveguide within the substrate. In an embodiment, the first optical waveguide and the second optical waveguide are offset from each other in a vertical direction and a horizontal direction. In an embodiment, the optical ring resonator is between the first optical waveguide and the second optical waveguide in the horizontal direction.

This technology provides the ability to measure temperature over a wide temperature range within a chamber. [Solution] The temperature measurement system according to the exemplary embodiment comprises a sensor substrate, a mounting table, and a measuring device. The sensor substrate includes a base substrate, an optical ring resonator provided on the base substrate, and a waveguide provided on the base substrate and optically coupled to the optical ring resonator. The measuring device includes a laser oscillator that inputs laser light into the waveguide of the sensor substrate placed on the mounting table, and a spectrometer that receives reflected light of the laser light propagating through the waveguide and output from the waveguide.

The invention discloses a method and a system for generating a tunable flat-topped spectrum based on a Flokey singular point. The method comprises the following steps: forming two types of supermodes alternately arranged on a frequency axis by using a pair of coupled optical ring resonators; applying periodic dynamic complex modulation including real and imaginary components to the resonator; configuring the modulation frequency to be matched with the super-mode interval so as to construct a periodically quenched non-Hermite frequency lattice on the synthetic frequency dimension; and adjusting modulation parameters, and driving the quasi-energy band of the crystal lattice to present a linear dispersion relationship at the singular point, thereby generating the flat-topped spectrum. According to the method, the intensity and the broadening speed of the flat-topped spectrum are linearly controlled by adjusting the imaginary part modulation amplitude, and the flat-topped frequency comb formed by a single supermode is obtained by extracting signals at a specific moment in a modulation period. According to the method, flexible electric control tuning of the spectrum form, the broadening speed and the modal component is realized, the system can work under the weak non-Hermite condition, and the practicability and integration of the system are improved.

Optical resonator (1) having a dielectric optical waveguide (2) comprising a guide input (3) for receiving light, a guide output (4) for outputting light, and a folded guide portion (5) positioned between the guide input (3) and the guide output (4) for transmitting light from the input (3) to the output (4), wherein the optical waveguide (2) is folded to form an optical ring resonator, wherein the optical waveguide (2) is a single continuous waveguide comprising a crossing point (6), said crossing point (6) being a point of the waveguide (2) where a first portion (7) of the waveguide (2) passes below or above a second portion (8) of the waveguide (2).

A first pump laser source produces a first pump optical signal at a first pump optical frequency v1P and launches it into a ring optical resonator to propagate in a forward direction around the ring optical resonator. A backscattered portion of the first pump optical signal propagates back to the first pump laser source and injection-locks it so that the first pump optical frequency v1P is locked to a first resonant mode optical frequency of the ring optical resonator. A second laser source producing a second pump optical signal at a second optical frequency v2P and can be similarly self-injection-locked to a second resonant mode optical frequency of the ring optical resonator different from the first resonant mode optical frequency.

A ring optical resonator is characterized by a Brillouin shift frequency Ωa. A first pump laser source produces a first pump optical signal at a first pump optical frequency ν1P and launches it into the ring optical resonator to propagate in a forward direction around the ring optical resonator. A backscattered portion of the first pump optical signal propagates back to the first pump laser source and injection-locks it so that the first pump optical frequency ν1P is locked to a first resonant mode optical frequency of the ring optical resonator. The first pump optical signal circulating in the ring optical resonator results in a first stimulated Brillouin laser (SBL) optical signal at a first SBL optical frequency ν1=ν1P−Ωa that resonantly propagates in a backward direction around the ring optical resonator at a different resonant mode optical frequency of the ring optical resonator.

The invention relates to an opto-mechanical microwave clock (100, 300, 400) integrated on a chip (103), comprising:-an optical waveguide (102) arranged on the chip (103),-a nanocavity (101) arranged substantially parallel to the optical waveguide (102), in which a modulation frequency of an optical mode excited in the nanocavity (101) corresponds to an oscillation frequency of a mechanical mode of the nanocavity (101), the modulated optical mode is evanescently coupled with the optical waveguide (102) in at least one coupling region; wherein the opto-mechanical clock (100, 300, 400) further comprises:-mode locking means configured to control opto-mechanical oscillation stability of the opto-mechanical microwave clock, the mode locking means comprising at least one of a contactless radio frequency mode locking means, an acoustic passive automatic mode locking means, an optical mode locking means comprising an optical ring resonator.

A source for providing electromagnetic radiation within a particular spectral range, including: a ring-shaped optical resonator for circulating a plurality of wavelength bands including: a first optical phase modulator, a first chomatic dispersion device, a second optical phase modulator, a multi-line spectral domain filter, a second chromatic dispersion device, and an optical amplifier; a controller coupled to the first optical phase modulator and the second optical phase modulator which is configured to drive the first optical phase modulator with a first waveform and the second optical phase modulator with a second waveform, the first chromatic dispersion device being configured between the first optical phase modulator and the second optical phase modulator to provide chromatic dispersion so as to subject each of the plurality of wavelength bands to a respective plurality of different time delays, the first and second optical phase modulators being configured to create spectral broadening.

A radar sensor apparatus for a transportation vehicle having a central electronic computing device to generate an electrical control signal for a transmitting device; a laser device which, in accordance with the electrical control signal, generates an optical transfer signal for transfer to the transmitting device; a transformation device having at least one first optical ring resonator which, in accordance with the optical transfer signal, generates a pulse train, the transformation device generates an electrical emission signal in accordance with the pulse train; the transmitting device which is designed to emit the electrical emission signal; and a receiving device for receiving an electrical receive signal and for transferring the electrical receive signal to the central electronic computing device. Also disclosed is a method for operating the radar sensor apparatus.

An integrated circuit (IC) device, the integrated circuit (IC) device including: an optoelectronic circuit having a first heater and a second heater; and a controller circuit having an input coupled to the photodiode of the optoelectronic circuit and an output coupled to the first heater and the second heater of the optoelectronic circuit, the controller circuit is configured to determine an offset from a baseline heater control signal code based on a transimpedance (TIA) control signal code of an input signal received from the photodiode, and provide a first heater control signal to the first heater and a second heater control signal to the second heater based on the offset of the optoelectronic circuit.

Techniques are described for efficiently generating optical traps within a quantum information processor by resonantly enhancing optical trap light using an optical ring resonator. An optical ring resonator may effectively recycle optical trap light in a closed optical path, such that the optical trap light passes through a vacuum chamber many times, reinforcing the intensity of the optical traps. As such, a low power light source may be utilized to generate the optical traps. While such a light source may generate light with a power that is alone insufficient to produce the desired number of optical traps, the optical ring resonator reinforces the intensity of this light through repeated passes through the vacuum chamber, building up light of sufficient intensity to produce the desired number of optical traps in the vacuum chamber.

An integrated circuit (IC) device includes an optoelectronic circuitry having a first heater and a second heater, and a controller circuitry having an input coupled to a photodiode of the optoelectronic circuitry and an output coupled to the first heater and the second heater of the optoelectronic circuitry, the controller circuitry configured to determine an offset from a baseline heater control signal code based on a transimpedance (TIA) control signal code of an input signal received from the photodiode, and provide a first heater control signal to the first heater and a second heater control signal to the second heater based on the offset of the optoelectronic circuitry.

We provide a method for optical convolution based on frequency synthetic dimensions using a single optical ring resonator undergoing dynamic modulations. The convolution is achieved using the scattering matrix of such a modulated system with discrete frequency input matching the free spectral range of the ring resonator. We use both a phase modulator and an amplitude modulator to obtain both unitary and non-unitary scattering matrices, analogous to non-Hermitian physics in synthetic dimensions.

A device including a substrate; a first layer resting on the substrate, the first layer including a first portion and a second portion mobile with respect to each other; and a ring-shaped optical resonator defined in a second layer. The resonator includes a first portion fixed to a first anchor pad connected to the first portion of the first layer and a second portion fixed to a second anchor pad connected to the second portion of the first layer.

Some embodiments of the present disclosure are directed to an optical device including a stable optical waveguide loop and method of manufacturing the same. For example, an optical device (e.g., an optical ring resonator) may include a substrate and an optical waveguide loop formed on the substrate. The optical waveguide loop may define a path, where the optical waveguide loop may have an inner and outer radius that may be configured to be variable along the path of the optical waveguide loop. Further, a distance between the inner radius and a corresponding outer radius may define a width of the optical waveguide loop, where the width may be variable along the path of the optical waveguide loop. Additionally, or alternatively, the width may be configured to admit a plurality of higher order modes of light that may couple to a fundamental mode of light.

An optical ring resonator-based gyroscope includes a photonic integrated circuit (PIC) chip including a plurality of optical elements, the plurality of optical elements including a resonator ring; and a printed circuit board including a plurality of electrical components, the photonic integrated circuit being mounted on a surface of the printed circuit board, the photonic integrated circuit and the printed circuit board being electrically connected. A photonic integrated circuit (PIC) chip including a substrate; a dielectric layer; a first waveguide layer forming at least: a ring resonator and reflector portions; a second waveguide layer forming at least: vertical Bragg grating couplers disposed over one of the plurality of reflector portions, a chip waveguide; a magneto-optic layer encapsulated in the dielectric layer; and a metal layer forming a plurality of metal connection pads and a plurality of wire traces for electrically connecting the PIC chip to electronic components.

Embodiments herein describe a method for selectively filtering different wavelengths of optical signals received from an optical channel using a cascaded ring resonator, each of the cascaded ring resonators having a first ring and a second ring. The first ring has a varying waveguide width along its length, the first ring being configured to form a first waveguide width portion and a second waveguide width portion, the first waveguide width portion having a greater width than the second waveguide width portion. The second ring has a varying waveguide width along its length, the second ring being configured to form a third waveguide width portion and a fourth waveguide width portion, the fourth waveguide width portion having a greater width than the third waveguide width portion. The method further connects a receiver to a respective cascaded ring resonator, each of the receivers having a photodetector configured to discriminate the optical signals.

The present invention relates to an optical detector and to an optical detection method. The present invention further relates to an optical sensor and to a method for detecting the quantity and / or presence of a specific molecules in a fluid.The optical detector of the present invention comprises a cascaded optical ring resonator and is characterized in that the processing unit used for processing the detector signal is configured to obtain Transform, T, data by performing a first transform on the detector signal, to select respective T data for each of the closed-loop optical waveguides among the T data, and to perform a second transform being an inverse of the first transform on the selected respective T data for each of the closed-loop optical waveguides, wherein the first transform is configured for transforming data in the time domain to data in the frequency domain.