17 results about "Waveguide sensor" patented technology

The application discloses a hemolysis analyzer based on an integrated optical waveguide sensor and a preparation method thereof, and comprises an integrated photon waveguide, a nano filter and a micro-fluidic channel, wherein the integrated photon waveguide is a single waveguide with a middle spiral type and coupling gratings on both sides. The hemolysis analyzer fully utilizes the advantages of high sensitivity and small volume of the integrated optical waveguide sensor, and realizes sample-free preparation by combining the methods of instantaneous absorption and hemoglobin filtration, and can quickly and accurately detect hemolysis and the degree of hemolysis.

The invention discloses an MIM waveguide sensor based on Fano resonance and an application method of the MIM waveguide sensor, and relates to the technical field of optical devices. A metal coating is plated on the substrate; a U-shaped resonant cavity is etched on the metal coating, and a metal-medium-metal MIM straight waveguide is etched below the U-shaped resonant cavity; wide-spectrum light enters from the left side of a straight waveguide and exits from the right side of the straight waveguide, and when resonance is excited, light beam energy corresponding to the resonance wavelength is coupled into a U-shaped resonant cavity, so that the transmissivity of the wavelength is reduced, and a transmission peak is formed; the sensor has a wide and stable low refractive index detection range.

The application discloses a kind of particulate matter block adaptive sensing module, robot and working method, and the sensing module includes acoustic sensing component, it includes base and microphone, base is opened with air extraction hole;Optical sensing component, it includes skin and optical waveguide sensor, skin covers on base, cavity is reserved between skin and base, air extraction hole is communicated to cavity;Optical waveguide sensor is arranged on skin with each other staggered;Fill granule, which is filled in cavity;Air extraction equipment is connected with air extraction hole.When there is external force to skin, fill granule can move in compliance with the shape of object exerting external force, while optical waveguide sensor can detect the position of external force and the deformation amplitude of skin;Air in cavity can be extracted using air extraction equipment to make fill granule adhere to each other, improve bearing capacity while making external vibration better transmitted to microphone, high-frequency vibration is detected by acoustic detection mode.

An optical waveguide sensor includes: a core that extends in a given direction and that guides examination light; a cladding that has a refractive index lower than the core and that surrounds at least part of a circumference of the core; and a groove that is positioned on a side of the core in a first direction such that an oozing component of the examination light that is guided by the core leaks, an end face of the groove being positioned on a side of a second direction orthogonal to the first direction with respect to an end of the core.

The invention discloses a groove-type micro-ring resonant cavity sensor, and relates to the field of optical waveguide sensors, the sensor comprises a coupling area integrated with an S-shaped bent waveguide and a groove-type micro-ring resonant cavity formed by a groove-type waveguide formed by waveguide ridges, and the groove and the cavity of the groove-type micro-ring resonant cavity are filled with an aqueous solution with a negative thermo-optical coefficient as an upper cladding. According to the invention, the optical coupling efficiency is optimized through the design of the S-shaped bent waveguide, and the energy of an optical field is highly converged in the groove, so that the interaction efficiency of light and a to-be-detected substance is improved, and the sensing sensitivity of the sensor is improved; meanwhile, the negative thermo-optic effect of the aqueous solution is utilized to accurately compensate the positive thermo-optic effect of silicon and silicon dioxide, so that the effect that the change rate of the effective refractive index to the temperature tends to zero is achieved, the sensing sensitivity of the sensor is further improved, and the problem that in a traditional scheme, sensing sensitivity improvement and temperature drift suppression contradict with each other is effectively solved.

The invention discloses a flexible conjugate double-curvature optical waveguide sensor and an application method of the flexible conjugate double-curvature optical waveguide sensor in flexible joint measurement. The flexible conjugate double-curvature optical waveguide sensor comprises two sensing assemblies and a flexible substrate, wherein each sensing assembly comprises a double-curvature optical waveguide, a flexible coating layer, a light emitting device and a light intensity detection device; for each sensing assembly, the light-emitting device and the light intensity detection device are installed at the two ends of the double-curvature optical waveguide respectively, and the outer side of the double-curvature optical waveguide is evenly wrapped with the flexible wrapping layer. The two sensing assemblies are attached to the upper surface of the flexible base body side by side and can deform along with deformation of the base body, and the installation direction of the sensing assemblies is the same as the direction of the flexible base body. According to the flexible conjugate double-curvature optical waveguide sensor and the application method of the flexible conjugate double-curvature optical waveguide sensor in flexible joint measurement, the influence of transverse bending deformation of the sensor on longitudinal tension and compression deformation measurement is effectively reduced, and the tension and compression and omnidirectional bending deformation of the flexible joint can be measured at the same time; and the precision and comprehensiveness of the measurement function of the sensor are ensured.

The invention discloses an integrated optical waveguide three-dimensional direct-current electric field sensor, belongs to the technical field of electric field measurement and sensing, and aims to solve the problem that an existing optical waveguide direct-current electric field sensor can only perform one-dimensional measurement and cannot synchronously sense components of a three-dimensional direct-current electric field. According to the technical scheme, the optical waveguide sensor comprises a packaging shell, a three-dimensional six-equal-part shielding sheet, three optical waveguide sensors with the same specification, a 30-degree arc-shaped copper block, a direct-current motor, a battery and the like. The three optical waveguide sensors are respectively arranged in x-axis, y-axis and z-axis grooves of the packaging shell, and the sensitive directions are pairwise orthogonal; the three-dimensional six-equal-part shielding sheet is installed on a direct-current motor shaft, the motor, the battery and the ship-shaped switch form a loop to drive the ship-shaped switch to rotate, the arc-shaped copper block assists shielding, and the optical fiber is led out from the bottom of the shell. The sensor depends on a three-dimensional shielding sheet stereo structure, can synchronously and periodically shield electrodes in three directions, so that the sensor can synchronously sense a three-dimensional electric field component, vector measurement of a direct-current electric field in any direction is further realized, and the high-precision measurement requirement of the three-dimensional electric field is met.

The invention relates to the field of sensors, and provides an optical waveguide sensor based on a cascade micro-ring structure, which comprises a silicon-based substrate layer, a lower cladding, a waveguide core layer and an upper cladding which are sequentially stacked from bottom to top, the waveguide core layer comprises a first optical waveguide, a first micro-ring resonator, a second optical waveguide, a third optical waveguide, a fourth optical waveguide, a second micro-ring resonator, a fifth optical waveguide and optical couplers which are respectively used as a first input port, a first output port, a second input port and a second output port; wherein an optical signal is input from the first input port and is output to the spectrograph from the first output port; or the optical signal can also be input from the second input port and output to the spectrograph from the second output port. By detecting the output spectrum of the common waveguide in the cascaded micro-ring structure, the spectrum slope can be greatly improved, and the sensing sensitivity is enhanced.

Waveguide and / or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, the assembly may comprise a waveguide block comprising a first surface on a first side of the waveguide block and a second surface on a second side of the waveguide block opposite the first side. One or more waveguides may be formed in the waveguide block. One or more antenna slots may be operably coupled with one or more of the waveguides. One or more auxiliary grooves may be positioned adjacent to at least one of the antenna slots and may mimic, or at least substantially mimic, at least one of the one or more antenna slots, such as in length and / or width.

The present invention relates to a method for forming an optical waveguide sensor for detecting ions containing radioactive isotopes in an aqueous solution. The method comprises treating a substrate surface by cleaning the substrate surface with one or more solvents to enable coating with a crosslinking agent, the substrate being selected from silica or silicon substrate, coating the treated substrate surface with the crosslinking agent selected from carboxylic acid functional group containing organic molecules to form a crosslinked substrate surface, coating the crosslinked substrate surface with a scintillating agent, and coating the substrate surface with a ligand capable of reacting with a radioactive isotope in an aqueous solution to form a functionalized substrate surface. The present invention also relates to the optical waveguide sensor for detecting radioactive isotopes fabricated with the method of the present invention.

The invention relates to a system and method for identifying the concentration of a gas using the photoacoustic effect. The system comprises a gas cell for containing a gas sample, an excitation light source with amplitude and / or wavelength modulation that emits light matching an absorption line of the target gas, an optical waveguide sensor adjacent to the gas cell for measuring acoustic pressure, and a processing unit to determine gas concentration from the acoustic pressure. The method involves placing the gas sample in the gas cell, directing modulated light into the cell, inducing a photoacoustic effect by the interaction of light and gas, measuring acoustic pressure via the optical waveguide sensor, and using the processing unit to determine the gas concentration. This system and method enable precise and efficient gas identification based on photoacoustic signals.

The optical waveguide sensor includes, for example, a core extending in a predetermined direction and guiding inspection light; a cladding layer having a lower refractive index than the core and surrounding at least a portion of the outer periphery of the core; and a groove portion which is located in a first direction of the core so as to leak out an exudation component of the inspection light guided by the core, the groove portion having an end surface located further toward a second direction side than an end portion of the core, the second direction side being orthogonal to the first direction. In the optical waveguide sensor, the groove portion may have an inspection region in which the distance between the core and a surface located on the first direction side of the core is equal to or less than a threshold value. This makes it possible, for example, to provide a newly improved optical waveguide sensor and spectral analysis element that can further improve production accuracy.

The invention discloses a branched chain sensing rope suspension parallel robot embedded with optical waveguide sensing, and belongs to the field of parallel robots. Comprising a rack, and a lead screw nut seat capable of ascending and descending and a fixed platform fixed in position are arranged on the rack; a plurality of supporting seats which are uniformly distributed in the circumferential direction are hinged to the fixed platform, and an umbrella stand connecting rod is hinged between the lead screw nut seat and each supporting seat; a supporting seat is arranged on the fixed platform, a sliding block capable of sliding in the length direction of the supporting seat is arranged on the supporting seat, a movable platform is arranged below the fixed platform, a fiber-reinforced optical waveguide sensor is arranged between the movable platform and the sliding block, and the two ends of the fiber-reinforced optical waveguide sensor are connected with the movable platform and the sliding block through universal joints respectively. A Kevlar fiber tube is arranged on the outer side of a fiber core of the sensor, the inner side and the outer side of the Kevlar fiber tube are filled with silica gel, and an LED and a PD are arranged at the two ends of the fiber core respectively. A sensor is used for replacing a traditional rope to form an optical waveguide rope, and the parallel robot is endowed with the large-range tactile perception capacity.

The invention discloses a particulate matter blocking self-adaptive sensing module, a robot and a working method, the sensing module comprises an acoustic sensing assembly, the acoustic sensing assembly comprises a base and a microphone, and the base is provided with an air exhaust hole; the optical sensing assembly comprises a skin and an optical waveguide sensor, the skin covers the base, a cavity is reserved between the skin and the base, and the air exhaust hole is communicated to the cavity; the optical waveguide sensors are arranged on the skin in a mutually staggered manner; the cavity is filled with the filling particles; and the air exhaust equipment is connected with the air exhaust hole. When an external force is applied to the skin, the filling particles can move in accordance with the shape of an object to which the external force is applied, and meanwhile, the optical waveguide sensor can detect the position of the external force and the deformation amplitude of the skin; air in the cavity is pumped away through the air pumping device, the filling particles can be tightly attached to one another, the bearing capacity is improved, meanwhile, external vibration can be better transmitted to the microphone, and high-frequency vibration is detected in an acoustic detection mode.

The invention belongs to the related technical field of intelligent sensing, and discloses a dual-channel optical waveguide sensor with multi-mode signal detection capability, the sensor comprises a flexible cladding, a flexible interlayer, a bending detection core, a pressing detection core, an LED chip and a spectrum sensor chip, the flexible interlayer is arranged in the flexible cladding, the bending detection core is arranged in the flexible interlayer, and the pressing detection core is arranged in the flexible interlayer. An accommodating cavity formed by the flexible cladding is divided into an upper layer and a lower layer by the flexible cladding; the bending detection core and the pressing detection core are arranged on the upper layer and the lower layer of the flexible cladding respectively, and dyeing filling media are embedded in multiple positions of the bending detection core and the pressing detection core; the LED chip is arranged opposite to one end of the flexible interlayer; the two spectrum sensors are respectively arranged opposite to the bending detection core and the pressing detection core; and the LED chip and the spectrum sensor are respectively positioned on two opposite sides of the flexible cladding. The multi-position bending state and the pressing force can be synchronously detected.

The application discloses a substrate integrated waveguide sensor based on a multi-ring coupling type IDE and relates to the technical field of detection. The substrate integrated waveguide sensor comprises a sensor module, a first SMA port and a second SMA port. The sensor module comprises, from top to bottom, a horizontal radiation patch, a substrate integrated waveguide and a metal grounding plate. The horizontal radiation patch comprises a patch body, a first power supply end, a second power supply end and an interdigital electrode etched on the upper surface of the patch body. The interdigital electrode comprises a capacitor, a first conductive electrode, a second conductive electrode, a first electrode unit, a second electrode unit, a third electrode unit and a fourth electrode unit. The first electrode unit, the second electrode unit, the third electrode unit and the fourth electrode unit each comprise a first rectangular electrode, a second rectangular electrode and a special-shaped electrode. The application can realize accurate detection of slight changes.