Disclosed is an optoelectromechanical switch that includes: an optical feedline disposed on an isolation substrate that receives resonator light that is subject to optical communication to a resonator when a cavity length of the resonator supports an electromagnetic mode at the wavelength of the resonator light; a resonator including: a low refractive index optical layer and receives substrate electrical counter potential; a non-conductive spacer; the electrically conductive membrane and that receives a membrane electrical potential and deflects toward and away from the electrically conductive high-index optical waveguide based on a difference in potential between the membrane electrical potential and the substrate electrical counter potential; the cavity length that is variable and under electromechanical control.

Disclosed are devices and techniques for facilitating transmission of light signals between optical waveguides formed on integrated circuit (IC) devices. In an implementation, one or more first waveguides may be formed in a structure such that at least a portion of the one or more first waveguides are exposed for optical connectivity. The structure may comprise first features to enable the structure to be interlocked with an IC device comprising second features complementary with the first features, so as to align at least a portion of the one or more first waveguides exposed to optically couple with one or more second waveguides formed in the first integrated circuit device.

Disclosed are devices and techniques for facilitating transmission of light signals between optical waveguides formed on integrated circuit (IC) devices. In an implementation, one or more first waveguides may be formed in a structure such that at least a portion of the one or more first waveguides are exposed for optical connectivity. The structure may comprise first features to enable the structure to be interlocked with an IC device comprising second features complementary with the first features, so as to align at least a portion of the one or more first waveguides exposed to optically couple with one or more second waveguides formed in the first integrated circuit device.

An optoelectronic component including an optical waveguide integrated into a plane of the component. The optical waveguide configured to guide optical radiation in the plane. The component including a coupling element connected to the waveguide and coupling optical radiation into the waveguide along the main coupling path. The degree of coupling efficiency of the coupling element is less than one in respect to the main coupling path. The coupling element outputs optical loss radiation along a secondary coupling path. The optical loss radiation is proportional to the radiation transferred along the main coupling path. The optoelectronic component includes a detector connected to the coupling element that registers the optical loss radiation and produces a detector signal. The optoelectronic component includes a control unit configured to influence at least one operating variable of the optoelectronic component based on the detector signal.

An optical sensor includes an optical device including a microresonator, laid out to guide a light beam along a closed loop optical path, and an injection and/or extraction waveguide, optically coupled to the microresonator; a photodetector, arranged at the output of the injection and/or extraction waveguide; and an analysis device, receiving a signal supplied by the photodetector, and deducing therefrom information relative to a displacement. The microresonator is constituted of a plurality of elementary waveguides spaced apart from each other, and arranged one after the other according to a loop shaped layout. The optical sensor offers increased sensitivity to the measurement of nanometric displacements.

A sensing and analysis system on a chip for sensing and analyzing chemical or biological analytes includes a chromatography column having an inlet and an outlet formed on the chip for temporal separation of components of analytes and at least one whispering gallery mode (WGM) optical resonator for sensing of the components. The chromatography column is formed on a first wafer layer. Each WGM optical resonator includes a hollow sealed enclosure formed at or over the inlet or the outlet of or elsewhere along the chromatography column such that a gas flowing through the chromatography column fills the hollow sealed enclosure. Each WGM optical resonator further includes an optical waveguide aligned with the sealed hollow enclosure for evanescent wave light coupling.

The invention relates to a method for producing a reference frequency f. According to the invention, the use of a first optical resonator (3a; 24) and of a second optical resonator (25) is provided, wherein the first resonator (3a; 24) has a first resonator mode having a first frequency f1 and the second resonator (25) has a second resonator mode having a second frequency f2, wherein the frequencies of the two resonator modes are functions of an operating parameter BP and assume the values f1 and f2 at a specified value BP.sub.0 of the operating parameter such that f1(BP.sub.0)=f1 and f2(BP.sub.0)=f2 apply, wherein the resonators (3a; 24, 25) are designed in such a way that the respective first derivatives of the frequencies f1(BP), f2(BP) with respect to BP or at least respective difference quotients around BP.sub.0 correspond within a deviation of at most 0.1%, wherein light of the first frequency f1 is stabilized to the first frequency f1 by means of the first resonator and light of the second frequency f2 is stabilized to the second frequency f2 by means of the second resonator, and wherein the difference between the stabilized frequencies f1 and f2, f=|f1f2|, is determined in order to obtain the stabilized reference frequency f.

An optical system can automatically lock an adjustable spectral filter to a first wavelength of an incoming light signal, and can automatically filter an additional incoming light signal at the first wavelength. A tunable filter can have a filtering spectrum with an adjustable peak wavelength and increasing attenuation at wavelengths away from the adjustable peak wavelength. The tunable filter can receive first input light, having a first wavelength, and can spectrally filter the first input light to form first output light. A detector can detect at least a fraction of the first output light. Circuitry coupled to the detector and the tunable filter can tune the tunable filter to maximize a signal from the detector and thereby adjust the peak wavelength to match the first wavelength. The tunable filter further can receive second input light and spectrally filter the second input light at the first wavelength.

A heat flux sensor including at least one optical resonator, suspended on a support, the optical resonator intended to be suspended in a gaseous environment, at least one first device intended to introduce a measurement light beam into the waveguide, at least one second collection device, intended to collect a detection light beam coming from the optical resonator and a device for heating of the optical resonator.

Waveguide bends and methods of fabricating waveguide bends. A first waveguide bend is contiguous with a waveguide. A second waveguide bend is spaced from a surface at an inner radius of the first waveguide bend by a gap. The second waveguide bend may have a substantially concentric arrangement with the first waveguide bend.