119 results about "Optical power meter" patented technology

A photoelectric converter sensitivity adjusting device and method, comprising a light source module, a shielding cage, an optical fiber bundle, an optical power meter, a power supply, a photoelectric converter and a voltmeter, the light source module is used to generate test light, one end of the shielding cage is provided with a small hole for receiving the test light, the other end is provided with an optical fiber bundle connector connected with the optical fiber bundle, the test light entering the shielding cage from the small hole enters one end of the optical fiber bundle from the optical fiber bundle connector, the optical power meter is used to test the optical power emitted from the other end of the optical fiber bundle, the photoelectric converter has an optical fiber bundle connector and an output signal line, the optical fiber bundle connector is used to be detachably connected to the other end of the optical fiber bundle, and the voltmeter tests the output voltage of the photoelectric converter; the photoelectric converter is provided with a sensitivity adjusting resistor, and the output voltage can be changed under the same light intensity excitation. The device can shield the interference of environmental light in ordinary experimental environment, accurately adjust the sensitivity of the photoelectric converter, and has the advantages of low cost, high detection efficiency and convenient operation.

This invention discloses a method and system for measuring the frequency response of an electro-optic modulator based on a spectral analyzer. The system includes a laser, a 95:5 single-mode fiber splitter, an optical power meter, an electro-optic modulator, a control power supply, an RF signal generator, and a spectral analyzer. The measurement method includes the following steps: calculating a calibration factor to correct optical power drift through optical path splitting, driving the modulator by applying several discrete single-frequency RF points, and measuring the carrier power P0(f) using the spectral analyzer. i ) and the first-order sideband power P1(f i ), and determined by the power ratio R(f) i )=10 (P1‑P0) / 10 Combining the Jacobi–Anger expansion / Bessel function relation, the phase modulation index β(f) is solved by inverse solution. i Then, the phase transfer function H(f) at each frequency point is calculated and fitted. i The continuous frequency response S of the modulator is obtained. 21 This invention simplifies the testing process, reduces reliance on high-speed photodetectors and vector network analyzers, and enables high-precision electro-optic response testing of electro-optic modulators at high frequencies.

The invention discloses an intelligent control system and method for a high-power laser driving power supply, and relates to the field of laser control, the method comprises the following steps: transmitting pulse detection laser, presetting the pulse width, repetition frequency and monopulse energy, calculating the loss ratio of a spectroscope through an integrated infrared temperature sensor, an optical power meter and the spectroscope, and calculating the power consumption of the spectroscope; basic parameters such as the initial temperature, the reflection power, the melting temperature and the temperature reflection correlation parameters of the reflecting material are obtained, and a database is built; emitting continuous working laser, calculating an energy density conversion coefficient and a reflection power peak value, and performing associative storage; detecting the center temperature of a material light spot in real time, predicting real-time reflection power by combining a reflection power peak value, and dynamically adjusting the actual power of working laser according to the temperature, a reflection power threshold value and an adjustment coefficient; and monitoring the temperature change rate and the reflection power, and if the temperature change rate and the reflection power exceed a safety threshold, early warning and stopping laser. According to the method, reflected laser dynamic control is achieved, laser energy output stability and machining precision are improved, and reliable system operation is guaranteed.

The present application relates to a kind of remote unattended equipment and its control method, remote control system, for solving the current energy consumption of unattended equipment in remote, electronic components are prone to aging and the problem of battery depletion caused by continuous low-power output.The present application includes the manned center station and remote unattended equipment connected, remote unattended equipment also includes remote switch control device, second optical communication module, measuring equipment, power supply and unattended equipment switch;Remote switch control device includes sequentially connected online optical power meter, current-voltage conversion circuit, comparison circuit and relay;Online optical power meter is communicated with manned center station;Online optical power meter is communicated with second optical communication module;Relay is connected with measuring equipment and unattended equipment switch respectively;Unattended equipment switch is communicated with second optical communication module;Power supply is connected with the parts in remote unattended equipment respectively.

An optical signal amplifier using a praseodymium doped fiber is described. The optical signal amplifier includes a signal laser, a first optical isolator, a second optical isolator a pump laser, a wave division multiplexer, a silica based glass optical fiber, a second optical isolator, an optical power meter, and an optical spectrum analyzer (OSA). The signal laser generates a signal laser beam. The pump laser generates a pumped laser beam. The wave division multiplexer combines the signal laser beam and the pumped laser beam and generates a combined laser beam. The silica based glass optical fiber has a preferred concentration of praseodymium ions of about 50×1024 ions / m3 and a length of about 5.7 m. The silica based glass optical fiber receives the combined laser beam, amplifies photons in the combined laser beam, and generates an amplified laser beam.

A method for testing an optical fiber, the method including transmitting, from a first light source of an optical power meter at a first time, a first light pulse in a first direction through an optical fiber; reflecting, by a fiber Bragg grating (FBG), the first light pulse in a second direction through the optical fiber, the second direction opposite the first direction; receiving, at the optical power meter, the reflected light pulse at a second time after the first time; determining, by circuitry associated with the optical power meter, a time delay between the first time and the second time; and measuring, by the circuitry, a length of the optical fiber based on the time delay.

The invention relates to the technical field of optical communication, in particular to a device and a method for testing isolation of a free space isolator. The test method comprises the following steps: determining a path for connecting each isolator single sheet according to the number of the isolator single sheets required to be segmented of the whole isolator sheet; preparing a magnet according to a magnetic dipole model or magnet magnetic field distribution simulation software, and determining a detection position of a required magnetic field intensity near the magnet; a light source and an optical power meter are arranged at the detection position, the light source corresponds to the output end of the isolator whole piece, and the optical power meter corresponds to the input end of the isolator whole piece; moving the whole magnet or isolator to enable the path to pass through the detection position in sequence; and determining the isolator single chip corresponding to the unqualified position according to the detection value of the optical power meter. By adopting the mode, the isolation degree of each area can be tested before the whole isolator is segmented, so that unqualified products after segmentation can be screened out, and the qualified rate of the free space isolator manufactured subsequently is ensured.

The invention discloses a self-adaptive coupling method of an optical fiber connector and an optical chip. The method comprises the following steps: driving an optical chip sending unit to emit light through an optical chip read-write module and reading internal receiving optical parameters in real time; the optical fiber splitter is connected with a receiving and transmitting port of the connector, and a transmitted optical signal is shunted to the mobile control module and an optical chip receiving end, so that optical path loopback and homologous detection are realized; the mobile control module utilizes a manipulator and a built-in optical power meter, combines an adaptive algorithm, and automatically adjusts the position of the connector according to the detected optical power and chip receiving parameters, thereby achieving the dual alignment of the transmit-receive lens and the optical chip. The system can greatly improve the coupling efficiency and yield, effectively screens bad components, and has a glue curing deformation compensation function.

This invention provides an intelligent adjustment device and method for an Er-doped solid-state laser, comprising a four-mirror cavity laser resonator consisting of a pump source, a collimating mirror, a focusing mirror, an input end mirror, an Er-doped laser crystal, an end mirror, an output coupling mirror, and a high-reflectivity mirror; and an automatic control system consisting of a PC information processing module, a visible light probe detection module, a feedback control module including a cavity mirror control rail and an angle controller, and an infrared optical power meter. The visible light probe detects the intensity change of the upconversion light from the Er-doped laser crystal in real time, which is verified by the infrared optical power meter. The PC module controls the feedback module to adjust the cavity mirror distance and angle to achieve closed-loop control. This invention utilizes optical characteristics to replace detection and intelligent closed-loop control, solving the problems of high cost and slow response of traditional 3-micron lasers, achieving low-cost, high-response automated cavity mirror control, and possessing advantages such as cost savings, fast response, and strong fault tolerance.

1. Name of the designed product: single channel optical power meter host. 2. Use of the designed product: used for connecting an optical power meter probe and displaying the measured power parameters. 3. Design points of the designed product: in the combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view.

Provided is an optical characteristic adjustment method for an optical fiber coupler (3) that comprises an optical fiber (1) that has a polished side surface and has been placed so as to be capable of communication and an optical waveguide (2) that has a polished side surface and is optically coupled to the optical fiber (1). The method involves connecting one end of the optical waveguide (2) to a power meter (8) and connecting the other end of the optical waveguide (2) to a transmission device (5) via an optical multiplexer / demultiplexer (6), outputting communication light (22) from the transmission device (5), measuring the optical power of the communication light (22) as a first optical power by means of the power meter (8), calculating the insertion loss of the optical fiber coupler (3) on the basis of the first optical power, estimating a branching ratio from the calculated insertion loss, and aligning the optical fiber (1) and the optical waveguide (2) on the basis of the estimated branching ratio.

The application belongs to the field of optical modules, and provides an optical module test coupling system, method, control device and storage medium, wherein the system comprises an optical switch module and a control device; the optical switch module is electrically connected with the control device; in a first test process, the optical switch module is configured to be physically connected with the emission lenses of all emission channels of a first optical module, an optical power meter and a ring flux tester; the control device is configured to be electrically connected with the optical power meter and the ring flux tester; the optical switch module is controlled to transmit optical signals passing through the emission lenses of all emission channels to the optical power meter and the ring flux tester; the emission optical power of all emission channels detected by the optical power meter and the ring flux of all emission channels detected by the ring flux tester are acquired. The optical power and the ring flux of the first optical module can be tested simultaneously, and the test efficiency is high.

The invention provides an optical transient interruption instrument detection method and device based on external modulation, and the method comprises the steps: generating an optical transient interruption signal through a preset electro-optical external modulation algorithm, and then carrying out the detection of two parameters, namely optical power and optical transient interruption time, of an optical transient interruption instrument through the signal. In optical power detection, an optical transient interruption signal is divided into two paths after light splitting and coupling, one path is input into an optical transient interruption instrument to be detected to obtain an optical power indicating value, and the other path is input into a standard optical power meter to obtain an optical power standard value. The detection process of the light transient interruption time is similar, and a time indicating value and a time standard value are obtained respectively. And finally, comparing the indicating value with the standard value to finish the precision evaluation of the optical transient interruption instrument. According to the optical transient interruption instrument detection method and device based on external modulation, a complete and reliable optical transient interruption instrument detection system is constructed based on optical transient interruption signals of external modulation, test calibration of two core parameters of optical power and transient interruption time is effectively supported, and detection precision and reliability are improved.

The invention relates to a power optical fiber on-line monitoring and fault early warning system, which adopts a layered architecture design and comprises a data acquisition layer, a data processing layer, an application layer and a display layer. The data acquisition layer acquires optical fiber optical power and reflected light data; the data processing layer processes the data and identifies a prediction fault; the application layer realizes the functions of fault positioning, early warning and the like, and integrates a GIS system; and the display layer displays information through upper computer software. A controller of a specific model, an optical power meter core chip and a communication chip are selected as hardware, and an adaptive power supply circuit is designed. Multiple algorithms are applied to data processing, fault positioning is combined with OTDR and GIS technologies, and the system has the advantages of multi-channel monitoring, high-accuracy recognition and low-error positioning.

The utility model provides a laser engraving machine which comprises a laser engraving machine body, a first laser power meter and a second laser power meter, the laser engraving machine body is provided with a carrying table, a multi-axis moving assembly and a main control board, the multi-axis moving assembly is arranged above the carrying table, a laser generator is arranged on the carrying table, and the main control board is arranged on the carrying table. The laser generator and the multi-axis moving assembly are electrically connected with the main control board, a first laser power meter is further installed on the multi-axis moving assembly, a second laser power meter is installed on the carrying table, and the first laser power meter and the second laser power meter are in communication connection with the main control board. The laser engraving machine comprises two sets of laser power meters used for monitoring laser power in real time, one set of laser power meter is located at the output end of a laser tube, and the other set of laser power meter is located below a target to be cut. The laser engraving machine can monitor laser power in real time and adjust power output in a self-adaptive mode, and therefore the purposes of improving engraving quality, reducing machining errors and guaranteeing working safety are achieved.

The application discloses a high-refractive-index glue reliability testing device and method. The testing device comprises a temperature detector, an optical power meter and sequentially fused light beam injection unit, a multimode optical fiber and a single-mode optical fiber. The multimode optical fiber and the single-mode optical fiber are provided with a high-refractive-index glue layer to be tested at a fusion point. The input end of the temperature detector is aligned with the high-refractive-index glue layer to be tested to monitor the temperature in real time. The optical power meter is arranged at the output end of the single-mode optical fiber to test the output power of the optical path. The reliability testing method is executed by the device. The device and method can test the reliability of the high-refractive-index glue to be tested in the laser field application process.

This invention discloses a method and system for measuring and calibrating the concentration of an oil mist nano-dispersion, belonging to the field of mechanical testing technology. The invention prepares a nanobubble solution using a porous membrane tube permeation method, employing a ceramic porous membrane tube in conjunction with a pressure tank to control the nanobubble particle size and concentration. A Malvern particle size analyzer is used to measure the solution concentration, which is then adjusted to the desired concentration through proportional dilution. The nanobubble solution is considered equivalent to an oil mist dispersion, and an optical measurement device is built based on the extinction method. A 900nm laser is used to irradiate the solution in a high-transmittance container, and the transmitted light attenuation intensity is measured using an optical power meter. The solvent used is carbon tetrachloride, chloroform, or dichloromethane, and the nanobubble gas is carbon dioxide, water vapor, or methane. The concentration is calculated based on Lambert-Beer's law. This method achieves stable control of oil mist concentration, avoids sampling errors, and improves the calibration accuracy and reliability of the oil mist detector.

The present disclosure provides a kind of optical link health monitoring method and equipment, it is related to optical communication technical field, by obtaining the optical power parameter of the optical module of the two ends of optical link;Wherein, monitoring optical power parameter includes transmitting optical power, receiving optical power;Based on the monitoring transmitting optical power and monitoring receiving optical power of optical module, the loss parameter of the bidirectional link loss of monitoring optical link is calculated;Wherein, monitoring loss parameter includes at least one of loss consistency, loss rate of change;Based on monitoring loss consistency, monitoring loss rate of change and loss parameter threshold value, the health status of monitoring optical link is determined;Wherein, monitoring loss parameter threshold value is determined based on the historical optical power parameter of monitoring optical module.It can improve the coverage and accuracy of health monitoring.

The application relates to a self-loop coupling light module, which comprises a PCB board and a lens arranged above the PCB board, a plurality of lasers and a plurality of photodiodes are arranged on the PCB board, and each laser corresponds to each photodiode; a hole is arranged on the lens, one surface of the hole is a light surface, part of light emitted by the laser is reflected to the photodiode by the light surface, and the other part of light passes through the light surface and enters a fiber band, and the light emitted by the laser farthest from the photodiode is reflected by the light surface and is shot into the photodiode farthest from the laser to realize self-loop coupling. A self-loop coupling method of the self-loop coupling light module is also provided. In the coupling, the light emitted by the laser farthest from the photodiode is bent by the cubic hole and is concentrated into the photodiode farthest from the laser by the newly-added converging lens to realize self-loop coupling, and a light power meter is no longer needed, and an external fiber band is also no longer needed.

This application provides a method and system for detecting the coupling effect of a Fiber Optic Actuator (FAU). In one example, the FAU coupling effect detection system includes: a C-band laser for outputting a C-band laser signal; a C-band circulator for inputting the C-band laser signal into a designated optical fiber of the FAU when the FAU is coupled to a silicon photonic chip, and inputting the reflected light signal of the C-band laser signal into an optical power meter; wherein a C-band grating is disposed in a single-mode waveguide corresponding to the designated optical fiber in the silicon photonic chip; the reflected light signal of the C-band laser signal is obtained by reflecting the input C-band laser signal through the C-band grating; and the optical power meter is used to measure the optical power of the reflected light signal of the C-band laser signal. Applying this embodiment allows for the detection of the coupling effect between the FAU and the silicon photonic chip without adding an additional loopback optical path.

The utility model discloses a system for evaluating the welding quality of a thulium-doped optical fiber containing a base, and relates to the technical field of optical fiber testing. The thulium-doped optical fiber oscillator comprises a thulium-doped optical fiber oscillator module and a return optical power monitoring module, and the thulium-doped optical fiber oscillator module is composed of a pump light source, a beam combiner, a high-reflection grating, a thulium-doped optical fiber containing a base, a low-reflection grating, a cladding optical stripper, an optical output port and a second optical power meter which are connected in sequence. An output fiber of the high-reflection grating is connected with an input fiber of the low-reflection grating through the thulium-doped fiber containing the base, and the thulium-doped fiber containing the base, the output fiber of the high-reflection grating and the input fiber of the low-reflection grating form a first melting point and a second melting point respectively. According to the utility model, the output laser power and the return light power can be detected at the same time through design, and the fusion welding quality of the melting point can be evaluated on line in real time by analyzing the relationship and the fluctuation condition of the output laser power and the return light power, so that an evaluation method for quickly and visually judging the fusion welding quality of the melting point of the thulium-doped optical fiber containing the base is provided.

The invention discloses a full-automatic photocatalytic reaction platform and a catalytic method thereof, and relates to the technical field of photocatalytic reaction. Comprising an outer box body and an ice maker, the ice maker is connected with the interior of the outer box body through a water pipe, a reaction chamber table is arranged at the top of the outer box body, a fixed protective cover is movably arranged at the top of the reaction chamber table, and an axial flow fan is arranged on the inner side of the fixed protective cover. According to the full-automatic photocatalytic reaction platform, the five groups of xenon lamp assemblies which are circumferentially and equidistantly distributed are adopted as light sources, light can be accurately refracted to the quartz test tube in cooperation with the refracting prism, and it is ensured that a sufficient and directional light source is obtained through photocatalytic reaction; the reflector assembly on the outer side of the xenon lamp holder further improves the light utilization rate. Meanwhile, an optical power meter probe arranged in the outer box body can detect the intensity of refracted light in real time, accurate illumination data support is provided for the test, and the consistency of illumination conditions of different batches of tests is guaranteed.

The application relates to the field of laser technology and provides a return light testing system and method based on a fiber laser, wherein the testing system comprises a (N+1) * 1 type forward pumping combiner, a resonant cavity, a side coupling combiner and a laser output module which are connected in sequence; a first laser power meter is arranged at the input end of the forward pumping combiner; one pumping input end of the forward pumping combiner is connected with the second laser power meter; one side surface pumping fiber of the side coupling combiner is connected with the third laser power meter; the return light power size in the optical path system returned to the fiber laser, the light splitting ratio of the return light in the cladding and the fiber core and the relationship between the output laser power of the fiber laser during processing and the total return light power can be qualitatively and quantitatively measured.

This application relates to the field of optical module testing technology, specifically to optical module parameter testing equipment, methods, computer equipment, and computer-readable storage media. The optical module parameter testing equipment includes a first jumper, a second jumper, an optical power meter, and a control module. The first and second jumpers have different inner diameters; the optical power meter is used to acquire the optical power of the optical module under test sequentially through the first and second jumpers; the control module is electrically connected to the optical power meter, and the optical power meter sends the optical power acquired based on the first jumper and the optical power acquired based on the second jumper to the control module. The optical module parameter testing equipment provided by this application has a simpler operation process than traditional methods. Operators connect the jumpers to acquire optical power data according to fixed steps, reducing cumbersome steps and saving time; the control module can automatically process data and determine whether the optical module is qualified, improving testing efficiency and facilitating the production process.

The utility model relates to a kind of evaluation optical path systems of base-containing thulium-doped fiber fusion quality, belong to optical fiber fusion technical field.It includes thulium-doped fiber oscillator module and return light monitoring module, the thulium-doped fiber oscillator module includes sequentially arranged pump light source, beam combiner assembly, high reflection grating, base-containing thulium-doped fiber, low reflection grating, cladding light stripper, light output port and second optical power meter, the output fiber of high reflection grating is connected with the input fiber of low reflection grating by base-containing thulium-doped fiber, forms the first melting point and second melting point of base-containing thulium-doped fiber;The return light monitoring module includes beam combiner assembly input end signal optical fiber, dichroic mirror and first optical power meter.The application structure is simple and convenient to operate, solves the subjective error of the fusion point fusion quality evaluation existing in the field of optical fiber fusion technology, long detection time and high detection cost problem, so that base-containing thulium-doped fiber melting point fusion quality can be accurately evaluated.

A system for measuring power of a laser beam includes a substantially opaque housing from which the laser beam is directed through an exit aperture. The housing includes: a beam splitter configured to transmit a primary portion of the laser beam through the exit aperture and to reflect a secondary portion of the laser beam; a diffuser element positioned such that a reflected secondary portion of the laser beam impinges thereon; at least one detector element in optical communication with the diffuser element, the detector element providing a signal in response to diffused light of the secondary portion of the laser beam impinging thereon; and an absorber element positioned such that a portion of any light that enters the housing through the exit aperture and is reflected by the beam splitter impinges on the absorber element and is substantially absorbed.

The application relates to the technical field of data processing, and discloses a gateway service comprehensive management method and system based on FTTR demand. The method comprises the following steps: obtaining a room-level FTTR topology mapping table through topology scanning of an optical time domain reflectometer test signal, extracting features of service traffic of each room based on deep packet detection to obtain a room function identification label library, compensating attenuation of corresponding room optical ports by using an optical power meter to obtain an FTTR link quality evaluation matrix, performing bandwidth allocation by using a reinforcement learning algorithm to obtain a room-level QoS strategy configuration set, and obtaining an FTTR gateway service comprehensive management scheme based on MQTT protocol building data interaction. The application improves the intelligent level and resource allocation efficiency of room-level management of the FTTR network. The application improves the real-time performance of optical fiber link quality monitoring and the collaboration of building network management.

1. The name of the design product: optical test instrument (FHO3300). 2. The use of the design product: the design product is mainly used for OTDR, light source, optical power meter, optical cable survey instrument, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A system for measuring roughness of a core sidewall of an optical waveguide based on mode excitation is provided, in which an optical waveguide to be measured is arranged between a few-mode long-period fiber grating and an optical power meter; the laser beam is incident on the optical waveguide to be measured after passing through the few-mode long-period fiber grating, and then is incident on the optical power meter after being subjected to a scattering loss caused by the roughness of the core sidewall of the optical waveguide to be measured; and the processor is configured to calculate an equivalent value of the roughness of the core sidewall according to the output power detected by the optical power meter, the output modes of the few-mode long-period fiber grating and the mode of the optical waveguide to be measured.

The invention provides an optical link health monitoring method and equipment, and relates to the technical field of optical communication. Optical power parameters of optical modules at two ends of an optical link are acquired; wherein the monitoring optical power parameters comprise transmitting optical power and receiving optical power; calculating a loss parameter of bidirectional link loss of the monitoring optical link based on the monitoring transmitting optical power and the monitoring receiving optical power of the optical module; wherein the monitoring loss parameter comprises at least one of loss consistency and loss change rate; determining the health state of the monitoring optical link based on the monitoring loss consistency, the monitoring loss change rate and the loss parameter threshold; wherein the monitoring loss parameter threshold value is determined based on the historical optical power parameter of the monitoring optical module. And the health monitoring coverage range and accuracy can be improved.