Aspects relate to devices, systems, and methods for non-invasive testing. The device may include a cartridge that analyzes a nasopharyngeal swabbing sample. The device may also include first and second waveguides, where each waveguide is configured to propagate an electromagnetic (EM) wave.

Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.

A miniaturized integrated frequency locked optical whispering evanescent resonator comprises: an optical source; an optical path having a first end and a second end, the optical path coupled to the optical source at the first end; an optical resonator disposed along a side of the optical path between the first and second ends, the optical resonator coupled to the optical path through an evanescent field to excite an optical whispering-gallery mode; an optical receiver coupled to the second end of the optical path; and a digital data processor configured to communicate with the optical receiver and the optical source, wherein the digital data processor comprises a frequency locking system and a data acquisition system, wherein the frequency locking system tunes the frequency of the optical source to the optical whispering-gallery mode of the optical resonator, and wherein the resonator weighs less than 15 kg and is containable within a volume less than 30 liters.

A MEMs and/or NEMs measurement system includes a resonant assembly comprising: an input and an output, a plurality of N optical resonators Ri indexed i each having a resonance wavelength λr,i, at least one waveguide to which the optical resonators are coupled, at least one element coupled to each resonator Ri, an emission device, a modulation device, an injection device configured to superpose the N light beams to form an input beam and to inject the beam as input to the resonant assembly, at least one detector configured to detect a light beam arising from the beam at the output of the resonant assembly and to generate an output signal, a demodulation device comprising at least N synchronous-detection demodulation modules.

The present invention relates to an optoelectronic device (1) for detection of a target substance dispersed in a fluid (50). The optoelectronic device comprises:—a light source (2) adapted to emit a light radiation (L.sub.E) having an adjustable wavelength λ.sub.S;—an integrated electronic circuit (100) comprising a photonic circuit (10) operatively coupled to said light source;—a control unit (9) operatively coupled to said light source and to said photonic circuit.

A tube preparation step of preparing a resin tube that has a tube wall impregnable with a solution including a fine substance and is made of a light-transmitting resin material, a solution preparation step of preparing a solution that includes a fine fluorescent substance that emits fluorescence or a fine scattering substance that scatters light as an oscillation material and an impregnation step of causing the resin tube to be immersed in the solution and causing the tube wall of the resin tube to be impregnated with the oscillation material, are included.

Disclosed is an interferometric fiber optic sensor for detecting chemical substances. A light source a detector are connected to a light dividing element in an optical path with an optical fiber segment. The optical fiber segment is further optically coupled with a measuring element across a residual cavity. The measuring element further has a face adapted to be exposed to a test substance that may contain a chemical substance to be detected. The optical fiber segment and the measuring element can be held together so that there is only the residual cavity between them. The optical fiber segment is contained, at least along part of its length, within a capillary. A first end part of the capillary is joined with the measuring element while another portion of the capillary is joined or clenched on the optical fiber segment, so that the capillary, the optical fiber segment and the measuring element together form a fiber optic measuring probe as a part of the optical path with the light source and detector.

Building blocks are provided for on-chip chemical sensors and other highly-compact photonic integrated circuits combining interband or quantum cascade lasers and detectors with passive waveguides and other components integrated on a III-V or silicon. A MWIR or LWIR laser source is evanescently coupled into a passive extended or resonant-cavity waveguide that provides evanescent coupling to a sample gas (or liquid) for spectroscopic chemical sensing. In the case of an ICL, the uppermost layer of this passive waveguide has a relatively high index of refraction that enables it to form the core of the waveguide, while the ambient air, consisting of the sample gas, functions as the top cladding layer. A fraction of the propagating light beam is absorbed by the sample gas if it contains a chemical species having a fingerprint absorption feature within the spectral linewidth of the laser emission.

A detecting device configured to detect chemical or biological species in a given environment, includes a matrix-array sensor formed from opto-mechanical discs that are optically and mechanically resonant, able to bind to species of the environment, and arranged in rows and columns. The opto-mechanical discs of a given row are optically coupled to the same optical waveguide. Actuating electrodes are provided in order to ensure the mechanical resonance of the opto-mechanical discs. One p-n junction is associated with each opto-mechanical disc, the junctions of a given column being electrically connected to the same biasing electrode, so as to block the flow through the corresponding opto-mechanical disc of a parasitic electrical current. A control circuit is configured to forward bias, during a time window of read-out of a disc of interest, the p-n junction of a disc of interest so as to place, via a thermo-optical effect, its resonant wavelength at a working wavelength, such that an optical signal propagating through the optical waveguide associated with the disc of interest is amplitude modulated.

Various embodiments may relate a chemical sensor. The chemical sensor may include a substrate including a first sealed (or isolated) cavity and a second sealed (or isolated) cavity separate from the first sealed (or isolated) cavity. The chemical sensor may also include an emitter in the first sealed (or isolated) cavity, the emitter configured to emit infrared light. The chemical sensor may further include a detector in the second sealed (or isolated) cavity. The chemical sensor may also include a waveguide configured to carry the infrared light from the emitter to the detector. The waveguide may include a sensing portion configured such that a property of the infrared light carried through the sensing portion changes in response to a chemical entity in contact with the sensing portion. The detector may be configured to detect the change in the property (of the infrared light).