72 results about "Fiber source" patented technology

To provide an optical fiber light source having high spectral wavelength flexibility and enabling incoherent continuous-wave output in a single transverse mode.SOLUTION: An optical fiber light source has: an optical fiber having a first end, a second end, and a tapered part positioned between the first and second ends, which is a single mode fiber; a wavelength conversion part; a light source for exciting the wavelength conversion part; and a support part. The first end outputs radiant light emitted from the excited wavelength conversion part. The tapered part includes: a constricted part; a first tapered region in which a diameter gradually decreases from the second end side toward the constricted part; and a second tapered region in which a diameter gradually increases from the constricted part toward the first end side. The constricted part has a diameter smaller than those of the first and second ends, and has a size of the wavelength or less of the radiant light. The wavelength conversion part is composed of liquid or gas and is disposed so as to surround at least an outer periphery of the constricted part of the tapered part. The light source simultaneously excites the outer peripheral portion surrounding the wavelength conversion part.SELECTED DRAWING: Figure 2

The present invention relates to a modified citrus fiber product, wherein the modified citrus fiber product has a gel strength of from 30 SAG to 100 SAG and a degree of esterification of from 30% to 100%. The invention also relates to a method for producing said modified citrus fiber product. The present invention avoids the use of an activation step involving the conversion of trapped water-insoluble pectin to free water-soluble pectin using chemicals (e.g., acids) while still obtaining a suitable amount of free water-soluble pectin to produce a citrus fiber product having a gel strength (SAG) of between 30 SAG and 100 SAG. Avoiding such an activation step ensures that the intrinsic factors of the pectin contained in the modified citrus fiber product are comparable to those found in the natural citrus fiber source.

The invention discloses functional composite fiber supplement granules for sows in the perinatal period as well as a preparation method and application thereof, relates to the technical field of feeds, and solves the problems that a single fiber raw material is poor in effect and palatability and cannot accurately regulate and control intestinal health of the sows in the perinatal period. Comprising the following raw materials in percentage by weight: 30-60% of soluble fiber; 25%-45% of insoluble fibers; 5%-15% of an adhesive and energy agent; 9.2%-23% of a functional additive and 0.5%-1.5% of a lubricant And unavoidable impurities. By scientifically compounding a plurality of specific fiber sources and functional additives, the feed can achieve the following effects: (1) the constipation condition of the sows in the perinatal period can be obviously improved; (2) regulating the balance of intestinal flora, inhibiting inflammation and enhancing the oxidation resistance of the body; (3) the feed intake of the sows in the perinatal period is increased, and postpartum recovery and lactation performance are promoted.

The invention relates to a miniaturized near-infrared spectrometer imaging system, which relates to the field of near-infrared spectrometers, and comprises a light source module, a sample light generation module, an optical fiber coupler, an optical fiber F-P filter, a photoelectric detector and a multimode optical fiber, light rays generated by the light source module can irradiate a sample through the sample light ray generation module and generate sample light rays, the optical fiber coupler and the optical fiber F-P filter are connected through multimode optical fibers, the optical fiber F-P filter and the photoelectric detector are connected through multimode optical fibers, and the optical fiber coupler receives sample optical fibers; and the signal is transmitted to the photoelectric detector through the multimode optical fiber, the optical fiber F-P filter and the multimode optical fiber. According to the invention, the baseline drift and noise of the spectrum are reduced, the accuracy of the spectrum is improved, the size is smaller, and the weight is lighter.

The embodiment of the invention discloses a concentration detection device. The concentration detection device comprises a micro-fluidic chip, an optical fiber photometer and a data processing system, the micro-fluidic chip comprises an extraction channel, and an inlet and an outlet are formed in the two ends of the extraction channel respectively. An organic extraction agent and a sample solution enter the extraction channel through the inlet, and the organic extraction agent is used for extracting Pu (IV) in the sample solution and forming an organic phase containing Pu (IV) and a water phase containing Pu (III). The optical fiber photometer comprises a liquid core waveguide capillary pool, an optical fiber, a light source and a spectrograph. The liquid core waveguide capillary pool is communicated with the outlet, and a water phase enters the liquid core waveguide capillary pool through the outlet. The light source and the spectrograph are connected with the liquid core waveguide capillary pool through optical fibers. The light transmitted by the optical fiber is totally reflected in the liquid core waveguide capillary pool, so that the light with sample information is transmitted to a spectrograph through the optical fiber for detection. And the data processing system is connected with the spectrograph.

This invention discloses a high-speed sweeping fiber optic light source. The specific device includes: a mode-locked pulse light source, an optical fiber amplifier, a highly nonlinear optical fiber, and a dispersion-compensating optical fiber. The passively mode-locked pulse light source outputs a high repetition rate, wide-spectrum mode-locked pulse. Its dispersion propagation follows a parabolic differential equation similar to one-dimensional paraxial diffraction, analogous to Fraunhofer diffraction. The pulse is amplified outside the cavity by an optical fiber amplifier to increase the laser pulse energy and peak power. Then, it is broadened by the highly nonlinear optical fiber to obtain a supercontinuum light source. Finally, the pulse is stretched by a highly dispersive medium provided by the dispersive optical fiber, and the pulse frequency domain spectrum is mapped to a time domain waveform, thereby realizing a high-speed sweeping frequency light source in the time domain.

The present application relates to the technical field of optical element detection, and specifically relates to an optical element detection system, which comprises a light source, a first single-mode optical fiber, a plurality of converging lenses arranged movably, a plurality of second single-mode optical fibers, light output by the light source sequentially passes through the first single-mode optical fiber, the converging lenses and the second single-mode optical fibers and is finally input to a light power meter; a to-be-detected optical element is placed in an optical path between the first single-mode optical fiber and the converging lenses, and the value of the light power meter can be read; for an optical element outputting a beam of light, the value can directly reflect whether the optical element is qualified; for an optical element outputting multiple beams of light, it is also necessary to judge whether the light spacing of the multiple beams of light is qualified; when the light power of the multiple beams of light is up to standard when the converging lenses are not removed, and the light power attenuation rates of the multiple beams of light are similar after the converging lenses are removed, the optical element is judged to be qualified; it can be seen that the optical element detection system of the present application can be applied to detection of optical elements outputting only one beam of light and multiple beams of light.

A fusion splicer according to one embodiment includes an optical fiber holder that holds an optical fiber; a rotation mechanism that rotates the optical fiber holder about a central axis extending along the optical fiber; a clamp portion that is disposed on a side opposite the rotation mechanism with respect to the optical fiber holder, and that presses the optical fiber held by the optical fiber holder; a light source that is disposed above the optical fiber holder, and that irradiates a portion of the optical fiber with light, the portion being pressed by the clamp portion; and an electric power supply portion that supplies electric power to the light source. A tip of the optical fiber protrudes from the clamp portion, and at least a part of a surface of the clamp portion facing the optical fiber is a highly reflective surface.

A plant-only replacement system for methylcellulose in food products is provided. The plant-only replacement system for methylcellulose is prepared by mixing a) 15-20% by weight of a plant-derived protein source, b) 10-25% by weight of a vegetable binding agent source, c) 15-20% by weight of a fruit, seed, and vegetable fiber sources, d) 15-20% by weight of a whole grain fiber source, and e) 5-15% by weight of a plant-derived starch source at a temperature ranging between 60 degree Celsius and 105 degree Celsius. The plant-only ingredients of the replacement system for methylcellulose effectively function as emulsifiers, stabilizers, texturizing, and thickening agents in food products, replacing the conventional, non-plant-derived, synthetic, or highly processed additives and ingredients.

The present invention discloses a device and method for detecting the size of an optical fiber end face based on Fourier stack imaging. The device comprises an optical fiber (1), a light source modulator (2), an LED light source array (3), an objective lens (4), a lens (5), a CCD camera (6), and a host computer (7). The host computer is used to execute a process for detecting the size of an optical fiber end face based on Fourier stack imaging: obtaining a large-field-of-view, high-resolution image of an optical fiber digital end face based on Fourier stack imaging; processing the large-field-of-view, high-resolution image of an optical fiber digital end face based on Fourier stack imaging to obtain an image area of ​​the optical fiber end face; and then calculating the actual geometric size of the optical fiber end face based on the image area of ​​the optical fiber end face, thereby obtaining a detection result of the optical fiber end face diameter. Compared with the prior art, the present invention can achieve high-precision measurement of optical fiber end face geometric parameters while taking into account both a large field of view and high resolution without changing the hardware structure of the imaging system.

A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight xylan, high molecular weight lignin and pulp.

The utility model relates to light source structure technical field discloses a kind of plane shadowless light source and visual inspection device, including support frame, fiber-optic light source, light guide optical fiber and install light guide plate in the support frame;The top surface of the light guide plate is arrayed with printing dots, and the printing dots include a reflective dot layer attached to the light guide plate and a light-absorbing dot layer disposed on one side of the top of the reflective dot layer;One end of the light guide optical fiber is connected to the fiber-optic light source, and the other end is mounted on the support frame to emit light rays to the outer peripheral surface of the light guide plate. The light rays emitted from the light guide optical fiber pass through the outer peripheral surface of the light guide plate and enter the light guide plate. The plane shadowless light source and visual inspection device of the utility model can improve the light brightness and can be installed in a narrow space to emit light normally.

The endoscope illuminating system comprises a light source module, a beam splitter, a first light guide optical fiber and a second light guide optical fiber, the light source module is provided with a light-emitting light path, the beam splitter corresponds to the light source module and is obliquely arranged relative to the light-emitting light path, and the light source module irradiates light rays of the beam splitter along the light-emitting light path. The light transmitted by the beam splitter is coupled to the first light guide optical fiber, and the light reflected by the beam splitter is coupled to the second light guide optical fiber. By means of the light splitting characteristic of the beam splitter, transmission light coupled to the first light guide optical fiber and reflection light coupled to the second light guide optical fiber have the same spectral component, the first light guide optical fiber or the second light guide optical fiber can adopt a single optical fiber or a single optical fiber bundle, and uniform illumination of multiple illumination points is achieved. The optical fiber bundle composed of a large number of glass or silica optical fibers does not need to be divided into two groups or multiple groups to achieve multi-illumination-point illumination, so that the process can be greatly simplified, and the cost of an optical path device is reduced.

This application provides a communication node and an optical communication network, belonging to the field of optical communication technology. The communication node includes a light source module, a link splitting module, and an optical transceiver module. The light source module provides local oscillator light and signal light to the optical transceiver module; the link splitting module receives downlink signals from the optical fiber, splits the downlink signals into N sub-downlink signals, and sends one sub-downlink signal to the optical transceiver module and the next node respectively, where N is a positive integer greater than 1; the optical transceiver module, based on the local oscillator light, obtains a signal with a wavelength matching the local oscillator light from the received downlink signals; it also generates an uplink signal with a wavelength different from the downlink signal based on the signal light, and sends the uplink signal to the optical fiber through the link splitting module. The uplink signal and the received downlink signal are transmitted in the same optical fiber but in opposite directions, saving optical fiber costs and fiber sourcing costs.

The invention discloses a wide-spectrum low-coherence single-mode optical fiber light source based on synchronous emission of different upper energy levels and application. The wide-spectrum low-coherence single-mode optical fiber light source comprises a 1.55-micron nanosecond pulse optical fiber pumping source, a 1.5 / 2-micron optical fiber wavelength division multiplexer, a single-mode thulium-doped silica optical fiber, a cooling device and a single-mode output tail fiber. At the low temperature of liquid nitrogen, the quantum efficiency of emission of thulium ions 3H4-3H5 in the high-phonon-energy quartz glass is improved to nearly 100% from less than 10% at room temperature; under the pumping condition of a gain switch with a high pumping rate, synchronous emission with a nanosecond-level time difference is formed between 3H4-3H5 emission (2.3-micron wave band) and 3F4-3H6 emission (1.9-micron wave band) in the high-concentration single-mode thulium-doped silica fiber, and the two different upper energy level emission forms single transverse mode flat wide-spectrum low-coherence output with the bandwidth larger than 700 nanometers on the spectrum. The all-fiber light source is compact in structure and convenient to operate, and realizes gapless coverage in a wave band from 1.7 microns to 2.5 microns; the method can be applied to speckle-free imaging illumination, optical coherence tomography and the like.

A method of treating an output coupling end of a hollow core optical fiber comprising a plurality of anti-resonant elements surrounding a hollow core, and a hollow core optical fiber that has been so treated. The method comprises: performing a tapering step to form a taper in the anti-resonant elements; performing a cleaving step at the taper to form at least one tapered output coupling end of the hollow core optical fiber; and performing an end treatment step comprising further heating the output coupling end in a controlled manner to smooth the output coupling end.

A fusion splicer according to one embodiment includes an optical fiber holder that holds an optical fiber; a rotation mechanism that rotates the optical fiber holder about a central axis extending along the optical fiber; a clamp portion that is disposed on a side opposite the rotation mechanism with respect to the optical fiber holder, and that presses the optical fiber held by the optical fiber holder; a light source that irradiates the clamp portion with light; and an electric power supply portion that supplies electric power to the light source. A tip of the optical fiber protrudes from the clamp portion. The clamp portion includes a transparent portion that is transparent to the light, and that transmits the light to the optical fiber.

The invention provides a qualitative detection method for AKD and ASA sizing agents in a paper product. The method comprises the following steps: (1) treating a sample; (2) preparing a test sample; (3) preparing a comparison sample; and (4) carrying out thermal cracking-gas chromatography-mass spectrometry combined detection. According to the present invention, the AKD and the ASA in the paper product are qualitatively determined by using the thermal cracking-gas chromatography-mass spectrometry combined method through the research, the paper sample is directly placed in the pyrolysis instrument connected with the gas chromatograph, the cellulose is completely decomposed into the volatile substance at the high temperature, the reacted sizing agent and the unreacted sizing agent in the paper product are released, and the paper product is subjected to the thermal cracking-gas chromatography-mass spectrometry combined method, and whether the paper product contains the sizing agents such as AKD and ASA or not can be qualitatively analyzed according to test data of a gas chromatography-mass spectrometer. The technical scheme is simple, rapid and low in cost, and provides a reliable basis for paper identification and fiber source analysis.

The invention relates to the technical field of livestock breeding and animal nutrition, in particular to fattening pig feed and application thereof.The fattening pig feed is prepared from, by weight, 50 parts of corn flour, 19-21 parts of concentrated feed, 9-11 parts of wheat bran and 20 parts of wild buckwheat straw powder. According to the formula, the wild buckwheat straw is used as a functional fiber source, through scientific matching and synergistic effect with conventional energy raw materials, the micro-ecological structure of the intestinal tract of the fattening pig is effectively optimized, enrichment of beneficial microbial communities such as lactobacilli in the phylum firmicalis is promoted, and therefore the steady state of the intestinal tract can be maintained. Meanwhile, in the liver of the fattening pigs fed with the formula, expression of various genes related to extracellular matrix structures and tissue homeostasis is up-regulated, and support is provided for tissue structure maintenance and healthy growth. The method provides a feasible path for resource utilization of wild buckwheat straws, and has double benefits of breeding health promotion and agricultural byproduct value increase.

The invention discloses a dynamic monitoring lens surface defect detector, which belongs to the field of optical detection and comprises an optical fiber light source, an optical fiber beam splitter body is arranged below the optical fiber light source, an optical fiber connector is arranged below the optical fiber beam splitter body, a convex mirror or a concave mirror is arranged on the left side of the optical fiber connector, and the convex mirror or the concave mirror is arranged on the right side of the optical fiber connector. A convex mirror or a concave mirror is arranged on the left side of the base, a mirror to be measured is arranged above the convex mirror or the concave mirror, a telecentric lens is arranged above the mirror to be measured, a half-wave plate is arranged above the telecentric lens, and a collimator is arranged on the left side above the half-wave plate; the lens surface defect detection is realized by adopting digital holography, meanwhile, the advantages of large depth of field and high resolution of the digital holography are applied to the field of lens surface defects, a foundation is laid for rapid detection of the lens surface defects, and the method is clear and convenient to operate.

The application discloses a compound microbial agent for improving fiber utilization of broilers and application thereof, and belongs to the technical field of microorganisms. The compound microbial agent is compounded by Lactobacillus casei R7-6 and Lactobacillus rhamnosus R5-8 at a volume ratio of 1:0.5-2. The two known strains are compounded for the first time, and it is found that the compounded strains have a synergistic effect within the range of 1:0.5-2, and the effect is significantly reduced beyond the range. The compound microbial agent has selective fermentation characteristics for different fiber source substrates, and the fermentation effect of the compound microbial agent on purple elephant grass and Guimin elephant grass is significantly better than that on alfalfa and Gegen. After fermentation, the content of crude protein is increased, and the content of neutral detergent fiber is reduced. When the compound microbial agent is used for feeding the purple elephant grass or the Guimin elephant grass, the daily average weight gain of broilers is increased, the feed conversion ratio is reduced, and the abdominal fat rate is reduced. The application provides an efficient microbial solution for high-value utilization of agricultural by-products such as purple elephant grass, Guimin elephant grass and other fibers.

The utility model discloses an ultraviolet protein detection device of a Y-shaped optical fiber LED light source. The ultraviolet protein detection device comprises a power supply module, an ultraviolet spectrum detection unit, a flow cell and an upper computer, the power supply module comprises a 12V direct current circuit, a 5V direct current circuit and a 3.3 V voltage stabilizing circuit; the ultraviolet spectrum detection unit comprises an LED drive circuit, an LED lamp, a pre-amplification circuit, a filter circuit, an AD conversion circuit and a microcontroller MCU. The LED driving circuit drives the LED lamp, the LED lamp emits two beams of ultraviolet light, one beam serves as an absorption light source and irradiates the ultraviolet detector through the flow cell, and the other beam serves as a reference light source and directly irradiates the ultraviolet detector; and the upper computer is connected with the MCU and is used for receiving data, drawing a spectrogram on a screen, editing the spectrogram and storing the data. The ultraviolet protein detection device with the Y-shaped optical fiber LED light source has the advantages that the anti-interference capability of the detection device can be improved, the measurement precision and sensitivity are higher, the stability and the adaptability are good, and the like.

The utility model discloses a white light optical fiber light source, which is characterized in that a light source for remotely exciting fluorescence by laser is used as a unit light source coupled with an optical fiber; a multi-head beam combining optical fiber with one multi-head end and the other single-head end is used as an optical fiber coupled with a light source; the unit light sources are coupled with the optical fiber in the following mode that each end face of the multi-head end of the optical fiber is coupled with each unit light source, and light of each unit light source enters the optical fiber from the multi-head end of the optical fiber and is finally output from the single-head end of the optical fiber through the optical fiber. The utility model has the advantages of high brightness, high efficiency, high reliability, high flexibility and the like. The LED lamp can be applied to various application scenes such as machine vision, microscope observation, industrial detection, medical imaging, operation illumination and the like.

According to some embodiments disclosed herein, an optical device includes an optical source, a mode field adapter, and an optical output fiber. The optical source is configured to provide source light having a first mode field diameter at a wavelength of the source light. The mode field adapter includes a coreless optical fiber and a graded index optical fiber optically coupled in series with the optical source. The mode field adapter is configured to receive the source light and to provide output light having a second mode field diameter at the wavelength of the source light, and the first and second mode field diameters are different. The optical output fiber has the second mode field diameter at the wavelength. The mode field adapter is optically coupled between the optical source and the optical output fiber. The optical output fiber and the mode field adapter are joined by a splice.

Imaging instruments and related methods are disclosed. In some examples, an elongated body may include a channel extending through at least a portion of the elongated body and an articulable portion extending along at least a portion of a length of the elongated body. A fiber optic bundle may be disposed in and extend through the channel of the elongated body. A sheath may be disposed in the channel along at least a portion of the elongated body including the articulable portion. At least a portion of the fiber optic bundle may be disposed in the sheath. The axial compressive stiffness of the sheath may be greater than an axial compressive stiffness of the fiber optic bundle to at least partially shield the fiber optic bundle from axial forces and limit axial movement of the fiber optic bundle during articulation of the elongated body.

A solid body made of an inactive, light transmissive material has embedded therein an optical fiber having a lengthwise segment in which a scattering structure is formed that is to redirect primary propagating light sideways out of the fiber. An active photoluminescent layer integrated in the optical fiber is to wavelength-convert the primary light into secondary light. The solid body is generally cylindrical but without rotational symmetry about the center longitudinal axis of the fiber. A portion of the outer side surface of the body is curved and is covered by an external reflector, while another portion of the outer side surface is uncovered by the reflector in order for the secondary light to emerge. Other embodiments are also described and claimed.

The utility model relates to the technical field of detection, and discloses an optical fiber light source generating device. The optical fiber light source generating device comprises a machine case, wherein at least one radiator is arranged at the top of the machine case; the mounting frame is arranged in the case, and a light source generating mechanism is adjustably mounted on the mounting frame; a heat dissipation plate is erected above the light source generating mechanism, and the heat dissipation plate is used for conducting heat generated by the light source generating mechanism; the light source receiver and the light source generating mechanism are coaxially arranged on one side face of the machine box, and the light source receiver is used for receiving the gathered light and conducting the gathered light to an external optical fiber of the light source receiver. By means of the structure, the light source is located at a low operation temperature for a long time, light attenuation is prevented, and the stability of the optical fiber light source generating device is improved.

The application is suitable for the field of biological detection, and provides a cholesterol detection method based on polydopamine / β-cyclodextrin modified micro-nano optical fiber.The method comprises a narrow line width erbium-doped fiber light source, a multimode fiber jumper, a sensing unit, a spectrometer and a computer.The sensing unit is prepared by removing the coating layer of the multimode fiber through Miller forceps and is made into a biconical fiber (waist diameter 8 μm, length 12 mm) through hydrogen flame tapering, and the surface is modified with a polydopamine / β-cyclodextrin combination (dopamine solution concentration 2 mg / mL, β-cyclodextrin solution concentration 5 mg / mL).During detection, the light beam of the light source (center wavelength 1550 nm) passes through the sensing unit, and due to the local refractive index change, further causes the evanescent field distribution and leads to the red shift of the characteristic wavelength of the signal light, the wavelength drift amount is observed by the spectrometer, and the data is transmitted into the computer for wavelength demodulation to realize the quantitative analysis of cholesterol.The method has the advantages of low cost, high sensitivity, strong anti-interference and integration by improving the light source stability through the double-ring cavity light source, increasing the sensing area through the biconical fiber and using specific coating recognition molecules, and provides a new technical scheme for cholesterol detection.

A method for producing a grain mixture, comprising: by weight, mixing 50% to 89% of a grain fiber source, 10% to 50% of an inorganic salt, 1% to 10% of a vitamin and a derivative compound thereof or a mixture of the two, and 0% to 1% of other auxiliary materials to form a starting mixture; mixing the starting mixture with water to generate dough; performing extrusion molding; and drying till the water content is 1%-5% by weight. A high fiber product and an oat product containing the grain mixture are also disclosed.

The application relates to a miniaturized near-infrared spectrometer imaging system, and relates to the field of near-infrared spectrometers, which comprises a light source module, a sample light line generation module, a fiber coupler, a fiber F-P filter, a photodetector and a multimode optical fiber; the light generated by the light source module can irradiate a sample through the sample light line generation module and generate sample light lines; the fiber coupler and the fiber F-P filter are connected through the multimode optical fiber, and the fiber F-P filter and the photodetector are connected through the multimode optical fiber; the fiber coupler receives the sample light fiber and transmits the sample light fiber to the photodetector through the multimode optical fiber, the fiber F-P filter and the multimode optical fiber. The application has the effects of reducing the baseline drift and noise of the spectrum, improving the accuracy of the spectrum, and being smaller in size and lighter in weight.