1991 results about "Optical coupling" patented technology

The invention provides a river water quality monitoring method based on multi-source remote sensing data, and belongs to the technical field of river water quality monitoring. The method comprises the following steps: establishing an inherent optical characteristic model of a river water body based on a Hybrid water body radiation transmission model, optimizing a calculation path by adopting a shortest path algorithm, and carrying out water body optical component inversion by adopting a quasi-analysis algorithm and a generalized inherent optical characteristic algorithm in combination with a multispectral characteristic enhancement model to obtain absorption coefficients of all components; and constructing a multi-band combination index to realize optical coupling effect decoupling, and applying the fine-tuned water quality parameter inversion basic model to a target river area to output a suspended matter concentration distribution diagram, a chlorophyll concentration distribution diagram and a transparency distribution diagram. The technical problem of low precision of remote sensing inversion of water quality parameters caused by mutual coupling of multiple optical active components in a river water body is solved.

To provide an optical system capable of enhancing coupling of light from a light source to an optical fiber, particularly an optical system that can be incorporated into medical instruments such as endoscopes.SOLUTION: There is provided an optical system. The optical system comprises a lens including an input surface for receiving light from at least one light source and an output surface through which the light exits the lens, the lens further including a peripheral surface extending between the input surface and the output surface and configured to direct, via total internal reflection, at least a portion of the light incident thereon through the output surface to an output focal point. The optical system can further comprise a tapered light pipe optically coupled to the lens and a light guide (e.g., one or more optical fibers) that is optically coupled to the tapered light pipe. The lens directs the received light to an output focal point that is disposed within the tapered light pipe.SELECTED DRAWING: Figure 3A

Electro-absorption modulators (EAM) and monolithically integrated electro-absorption modulated lasers (EML) and methods of fabrication are disclosed. Vertically stacked waveguides for a distributed feedback (DFB) laser, an electro-absorption modulator (EAM) and a passive output waveguide are vertically integrated, and the DFB laser, EAM and output waveguide are optically coupled using laterally tapered vertical optical couplers. Laterally tapered vertical optical couplers provides an alternative to conventional butt-coupling of a laser and EAM, offering improved reliability for high power operation over extended lifetimes. Optionally, the EML comprises monolithically integrated electronic circuitry, e.g., driver and control electronics for the DFB laser and EAM. Beneficially, integrated EAM driver and control circuitry comprises a high-speed electro-optical control loop for very high-speed linearization and temperature compensation, e.g. to enable advanced modulation schemes, such as PAM-4 and DP-QPSK, for analog optical data center interconnect applications. Some embodiments are compatible with fabrication using a single epitaxial growth.

The invention relates to a quick alignment method for optical coupling equipment, which comprises the following steps of: acquiring real-time position information of a laser transmitting end and a laser receiving end, acquiring relative position data by adopting a fiber grating technology, setting a dynamic compensation algorithm according to a light spot offset and a position deviation value, generating an adjustment parameter through the dynamic compensation algorithm, and aligning the adjustment parameter to the optical coupling equipment. According to the method, the structural design of optical coupling equipment is optimized, a high-precision light spot imaging module and a fiber grating positioning module are integrated, and a multi-point data fusion technology and an optical path alignment model in a dynamic environment are utilized, so that the measurement precision is further improved, and the influence of environmental interference is reduced. According to the invention, the problems of real-time performance and accuracy of light path alignment in kilometer-level laser measurement are effectively solved, and a new solution is provided for the development of a long-distance laser measurement technology.

Apparatuses, systems and methods for optical coupling, optical integration, electro-optical coupling, and electro-optical packaging are described herein. Optical couplers may comprise various optical elements (e.g., mirrors as described herein) to relax optical assembly requirements and improve producibility. Optical couplers may improve fiber-to-chip, fiber-to-fiber and chip-to-chip optical connection. Optical couplers and optical components may be used to improve integration of, connection of, and / or packaging of optical systems and / or components with electrical systems and / or components.

Provided is an optical module having high efficiency in optical coupling to a functional element on a substrate. An optical module includes: a first optical waveguide disposed parallel to a substrate; a condensing mirror configured to reflect and condense light propagated in the first optical waveguide toward the substrate; a second optical waveguide formed in a tapered shape narrowed toward the substrate, the second optical waveguide guiding the light reflected by the condensing mirror to the vicinity of the surface of the substrate; and an optical function unit disposed on the substrate such that the light emitted from the second optical waveguide is incident on the optical function unit.

The invention relates to an optical fiber hydrogen sensor based on a silver film-nanowire hole array structure and a preparation method thereof in the field of photochemical sensors. The optical fiber hydrogen sensor comprises a multimode optical fiber, and a sensing area is formed on the multimode optical fiber; the sensing area is formed by stripping a coating layer with a preset length from the multimode optical fiber, thinning the optical fiber in the area, plating a silver film on the surface of the thinned optical fiber, and adsorbing a nanowire hole array structure which is sequentially and vertically arranged on the surface of the silver film in a liquid level self-assembly manner; the nanowire hole array is of a metal-medium-metal (MIM) structure, a gold-palladium nanowire array is arranged at the bottom, an intermediate medium layer is made of aluminum oxide, and a silver film with a hole array in any shape is arranged at the top. When light is transmitted to a sensing area from a fiber core of the multimode optical fiber, the light and a metal silver film can excite a surface plasmon resonance (SPR) effect, meanwhile, an MIM structure formed by a gold-palladium nanowire, an aluminum oxide dielectric layer and a porous silver film serves as an optical coupling antenna through a local surface plasmon resonance (LSPR) effect at the edge of a top hole, and the optical coupling antenna is used for transmitting the light to the sensing area. Light energy is efficiently converged and excited in an extremely bound gap plasmon (Gap Plasmon) in an aluminum oxide dielectric layer, so that far-unconventional electromagnetic field enhancement is generated in a sensing core area, and the sensitivity of the sensor is greatly improved.

Silicon photonics technologies adds integrated optics functionality to CMOS integrated circuits thereby leveraging high volume manufacturing. Independent of geometry or technology these silicon photonic devices require packaging with single mode optical fibers to interface to the optical network and / or co-packaging with active semiconductor devices, discrete microoptoelectromechanical systems (MOEMS) s or monolithically integrated MOEMS. Stringent performance constraints and minimizing manufacturing costs / times are consistent demands on such photonic circuits. Accordingly, there is a demand for low-cost and low-loss optical coupling technologies for packaging that can easily be scaled for mass production that overcome limitations in the prior art. The inventors have established design methodologies, packaging schemes and component designs that leverage automated passive assembly techniques for speed / cost in combination with directly written optical interconnects that allow for offsetting the losses that would arise from the manufacturing tolerances of these passive assembly techniques.

A distributed feedback (DFB) laser includes a planar substrate; a laser section; and a mirror section optically coupled to said laser section. The laser section includes a front facet, an active layer substantially parallel to the planar substrate but not coplanar with the planar substrate and configured to emit light through the front facet, and a first Bragg grating arranged in a planar layer substantially parallel to the active layer but not coplanar with the active layer and on a side of the active layer opposite to the planar substrate. The mirror section is optically coupled to the laser section, and includes a second Bragg grating configured to reflect light towards the front facet. The second Bragg grating is arranged in a planar layer that is coplanar with the active layer.

The invention discloses an optical chip-optical fiber coupler based on a collimating grating penetrating through a substrate, which belongs to the technical field of photoelectric chips and comprises a substrate, an inverted optical chip is arranged on the substrate, and the optical chip comprises at least one optical device, an optical waveguide array for realizing input and output and a collimating grating array. The collimating grating array is provided with a gradually changing period and duty ratio, so that light output from the optical waveguide array is diffracted to the substrate through the collimating grating array and is propagated to the back surface of the optical chip as basically collimated light; an optical coupling element array is arranged at the position, corresponding to emergent light of the collimating grating array, of the back face of the optical chip to couple light to an optical fiber array. By the adoption of the structure, high-efficiency coupling of the optical chip and the optical fiber array is achieved, and compared with a common grating coupler and an edge coupler, the coupler has higher coupling efficiency and alignment tolerance, is easier to manufacture and can be widely applied to the fields of optical IO, photoelectric sealing (CPO) and the like of large-scale photoelectric integrated chips.

The invention discloses a spot-size converter (SSC) and a high-power external cavity laser chip, the external cavity laser chip comprises a wide-ridge gain chip and a passive external cavity chip, one end of the wide-ridge gain chip is plated with a high-reflection film as a reflection end, and the other end of the wide-ridge gain chip is plated with an antireflection film to realize low reflection; and efficient coupling of the fundamental mode of the wide-ridge gain chip with the size far larger than that of the single-transverse-mode waveguide and the small-size single-mode waveguide is realized by integrating the SSC. The SSC converts a large-size mode field and a small-size mode field mutually and effectively reduces optical coupling loss, mode selection and output wavelength adjustability are achieved by adjusting the longitudinal mode phase shifter and the micro-ring filter, part of power is fed back to the wide-ridge gain chip to construct external cavity resonance, and high-power output is achieved. According to the SSC, the device size can be remarkably reduced, a wide-ridge gain chip and an inter-chip hybrid integration process are compatible, and the tuning flexibility, the integration level and the overall stability of the laser are further improved while high-power output is kept.

The utility model discloses a liquid drop preparation instrument and an antibody screening device, and the liquid drop preparation instrument comprises a chip assembly which comprises a liquid drop generation chip and a liquid drop sorting chip, and the liquid drop sorting chip comprises a sorting electrode; the sample table is used for placing at least one of the liquid drop generating chip and the liquid drop sorting chip; the optical module is optically coupled with the sample table and is used for providing incident light to the sample table and collecting an optical signal generated by the biological sample or the liquid drop in response to the incident light; the liquid path system is in operable conduction with the chip assembly and is used for pumping a solution to the liquid drop generating chip or the liquid drop sorting chip; the control circuit can selectively call a first group of control parameters or a second group of control parameters, the first group of control parameters comprises a first control instruction, and the second group of control parameters comprises a second control instruction; the control circuit comprises a feedback control sub-circuit used for controlling the sorting electrodes. According to the liquid drop preparation instrument, liquid drop preparation can be carried out, and needed liquid drops can be rapidly sorted out.

The invention discloses a method, a device and equipment for testing the uniformity of a light guide film, and the method comprises the steps: carrying out the dynamic temperature adjustment of the light guide film, and obtaining the multi-wavelength dynamic spectrum data of an edge region; nonlinear optical response characteristics are extracted; generating a dynamic optical characteristic diagram and performing three-dimensional structure analysis; calculating a thermo-optical coupling complexity index; generating dynamic change data of the optical performance of the edge region; and executing multi-dimensional evaluation index processing and time sequence analysis to obtain a dynamic accurate evaluation result. According to the technical scheme, the optical performance of the edge area of the light guide film can be accurately evaluated under the dynamic temperature condition, the influence of temperature change on the uniformity of the light guide film is effectively captured, the accuracy and practicability of a test result are improved, and a more reliable basis is provided for design optimization and quality control of the light guide film.

The utility model provides a photoelectric co-packaging structure and an optical module, and relates to the technical field of optical communication. The photoelectric co-packaging structure comprises a multi-layer circuit board, a photon integrated circuit chip and an anti-warping piece. An optical waveguide and an optical coupling port connected with the optical waveguide are arranged in the photon integrated circuit chip; and the optical coupling port is used for optically coupling with an optical element outside the photonic integrated circuit chip. The photon integrated circuit chip is flip-chip welded on the multilayer circuit board and is electrically connected with the multilayer circuit board. The anti-warping piece is arranged in the multi-layer circuit board; the projection of the photonic integrated circuit chip on the surface of the multilayer circuit board and the projection of the anti-warping piece on the surface of the multilayer circuit board are at least partially overlapped. The multi-layer circuit board is provided with the anti-warping piece, so that the packaging stress can be reduced, the warping deformation of the multi-layer circuit board and the photon integrated circuit chip is reduced, and the packaging quality and reliability are improved.

An example optical system having an optical supply sub-system for supplying light to a photonic integrated circuit is presented. The optical supply sub-system includes a primary light source, an auxiliary light source, a first optical coupler, and a second optical coupler. The first optical coupler includes a first metal-oxide-semiconductor capacitor microring resonator (MOSCAP MRR) and the first optical coupler includes a second MOSCAP MRR. The first optical coupler is coupled to the primary light source and the photonic integrated circuit to control the propagation of the primary light to the photonic integrated circuit. The auxiliary light source may be configured to generate an auxiliary light when the primary light source malfunctions and the first MOSCAP MRR and the second MOSCAP MRR are controlled to control propagation of the auxiliary light from the auxiliary light source to the photonic integrated circuit.

The invention discloses a dynamic multispectral adjustable tunnel fire simulation light source system and a use method. The dynamic multispectral adjustable tunnel fire simulation light source system comprises a light source array module, a spectral dynamic adjustment module, an environment monitoring module, a data processing and control module, an optical coupling module and a user interaction interface, the light source array module receives an adjusting instruction from the data processing and control module and transmits an optical signal to the optical coupling module, and the light source array module is composed of a plurality of sub light sources capable of independently adjusting wavelengths and intensities; the spectrum dynamic adjusting module is integrated in the data processing and control module; the spectrum dynamic adjusting module is used for receiving real-time data of the environment monitoring module, calculating a weight coefficient and issuing the weight coefficient to the light source driving circuit; through the multi-band light source array, environmental parameter feedback and an intelligent adjustment algorithm, high-fidelity fire spectrum simulation is realized, the problems of single spectrum and poor environmental adaptability in the prior art are solved, and the system and the method can be widely applied to the fields of fire test and scientific research.

The system comprises a projection module, an imaging module and a phase resolving module, the projection module comprises at least three light source units and light modulation units corresponding to the light source units, an emergent light path of at least one light source unit is provided with an optical coupling assembly, and the emergent light path of at least one light source unit is provided with an optical coupling assembly. The light modulation unit is used for carrying out gradient phase modulation on a light beam, and the optical coupling assembly couples a light path modulated by the light modulation unit to a coaxial light path of the imaging module; the imaging module is arranged on a path sharing the same optical axis with the optical coupling assembly and is used for acquiring a stripe image modulated on the surface of the measured object; the phase resolving module is used for solving a wrapping phase of the fringe image output by the imaging module and unwrapping the wrapping phase based on a quality image guided space phase unwrapping algorithm; while the high-frequency sine fringe generation capability is ensured, collaborative optimization of phase distribution and light intensity characteristics is realized, and the contradiction between device miniaturization and optical performance is effectively reconciled.

The invention provides an online auxiliary aiming device for an X-ray streak camera. The online auxiliary aiming device comprises a reading camera, an optical coupling lens, a lens connecting piece, an inclination angle adjusting platform, a vacuum window flange, a reflector and a scintillator assembly. The optical coupling lens is respectively connected with the reading camera and the lens connecting piece; the lens connecting piece is arranged on the inclination angle adjusting platform; the inclination angle adjusting platform is arranged on the vacuum window flange, and the view field of the camera is read by adjusting the angle; the vacuum window flange is used for isolating atmosphere from a vacuum environment; the reflecting mirror is arranged in a vacuum environment in the vacuum window flange; the scintillator assembly is arranged at a preset cathode slit of the streak camera. Reference can be provided for adjustment, aiming precision is improved, aiming time is shortened, and experiment efficiency is improved.

The invention relates to the technical field of semiconductor chip packaging, in particular to a photoelectric co-packaging optical coupling passive alignment packaging structure and method. According to the invention, high-precision automatic alignment of the grating coupler in the optical chip and the through hole of the adapter plate is realized by using the solder ball tension effect in the flip reflow soldering process of the optical chip, and a stable optical limiting structure is formed. The passive coupling of the optical elements (such as bare optical fibers, optical fiber arrays, reflectors and the like) and the grating coupler is realized by placing the optical elements with matched sizes in the via holes of the adapter plate and completing refractive index matching and structure fixing by using curing glue. The whole process does not need additional active alignment equipment, is the same as a traditional chip packaging process, has the advantages of being simple in process, low in cost and high in packaging efficiency, and is a key packaging technology of a photoelectric co-packaging system in the future.

The invention discloses a through hole cold wall vector magnet structure and a strong magnetic field terahertz near field measurement system, the through hole cold wall vector magnet structure comprises a vector magnet, the vector magnet is provided with a magnet through hole penetrating through the top and the bottom of the vector magnet, the vector magnet comprises multiple layers of shells which are sequentially spaced from outside to inside and coaxially sleeved, and the multiple layers of shells are all coaxial with the axis of the magnet through hole; an outer vacuum interlayer, a liquid nitrogen interlayer, a first vacuum interlayer and a second vacuum interlayer are sequentially formed among the multiple layers of shells. According to the invention, the through hole is formed in the vector magnet, enough space is provided for the internal unit of the sample cavity, the outer vacuum interlayer, the liquid nitrogen interlayer, the first vacuum interlayer, the second vacuum interlayer and the liquid helium cavity are arranged, and a multi-layer cold shield is formed by vacuumizing and liquid nitrogen injection, so that a cold wall is formed on the inner wall of the through hole of the magnet; therefore, a low-temperature basis is provided for an optical coupling scanning probe test system under multi-field regulation and control.

Optical patient monitoring systems are disclosed. The system may comprise an optical coupling system configured to transmit to and receive light signals from one or more locations on a subject; an optical processing system configured to generate optical data using the received light signals; and a computer programmed to receive the optical data; determine, using the optical data, at least one indicator of blood pressure; estimate an estimated blood pressure using the at least one indicator of blood pressure; and generate a report indicative of the estimated blood pressure. The at least one indicator of blood pressure comprises one or more of near-infrared spectroscopy (NIRS) data; photoplethysmography (PPG) data, diffuse correlation spectroscopy (DCS) data, speckle contrast optical spectroscopy (SCOS) data, speckleplethysmography (SPG) data, first derivative PPG data, second derivative PPG data, first derivative SPG data, second derivative SPG data, inflow (Fin) data, outflow (Fout) data, heart rate data, physiological data, and combinations thereof. Methods for estimating blood pressure are also disclosed.

A structure adapted to optical coupled to an optical fiber includes a photoelectric integrated circuit die, an electric integrated circuit die, a waveguide die and an insulating encapsulant. The electric integrated circuit die is over and electrically connected to the photoelectric integrated circuit die. The waveguide die is over and optically coupled to the photoelectric integrated circuit die, wherein the waveguide die includes a plurality of semiconductor pillar portions extending from the optical fiber to the photoelectric integrated circuit die. The insulating encapsulant laterally encapsulates the electric integrated circuit die and the waveguide die.

Disclosed is a facet coupling fanout device including a body, a first optical coupling side, and a second optical coupling side. The body defines a plurality of multi-channel waveguides therein. The first optical coupling side optically couples the plurality of multi-channel waveguides to a plurality of waveguide cores of a photonic integrated circuit (PIC). The a second optical coupling side optically couples the plurality of multi-channel waveguides to optical fibers of a fiber array unit (FAU). The first optical coupling side defines a first pitch P1 between the plurality of multi-channel waveguides and the second optical coupling side defines a second pitch P2 between the plurality of multi-channel waveguides where P2>P1. The first pitch P1 and the second pitch P2 define a pitch ratioR=P2P1.

The invention relates to an aerosol single-droplet optical tweezers detection device and method based on an LED light source, belongs to the technical field of optical capture and particle detection, and solves the problems that a light source adopted by an existing optical tweezers technology is high in cost and large in energy consumption, and large spurious signal interference exists in signal detection. The optical coupling system comprises an LED light source module, a collimating lens, a light beam shaping assembly, a focusing lens assembly and a semi-transparent and semi-reflective mirror assembly which are arranged in sequence. The optical tweezers detection system comprises the light beam coupling system, a single liquid drop suspension system, a gas atmosphere control system, a micro-drop pumping system, a signal detection system and a micro-drop detection device.

The invention discloses an underwater magnetic field measuring device based on a diamond NV color center. The underwater magnetic field measuring device comprises a diamond NV color center module, an incident laser excitation module, a multi-path optical coupling module, a microwave excitation module, a fluorescence acquisition and photoelectric conversion module, a signal processing and control module and a magnetic field module, the multi-path optical coupling module is used for dividing an optical fiber into multiple paths and collecting fluorescence generated by the diamond block; the microwave excitation module is used for switching between two single-quantum resonance frequencies to drive an NV color center to realize double-quantum DQ reading; and the signal processing and control module comprises an FPGA (Field Programmable Gate Array) processing unit of a field programmable logic array chip. According to the invention, a dual-quantum DQ working point of a diamond NV color center is used as a measurement channel, common-mode influence of D is removed through differential measurement, the problem of D drift caused by temperature drift, stress and material aging is physically and obviously inhibited, and the device can still realize ultrahigh-sensitivity measurement in a complex underwater environment.

The invention provides a molecular fluorescence detection chip and an optical packaging structure thereof, a fluorescence excitation layer of the chip comprises an input optical coupling module, an optical beam splitter tree structure, a fluorescence excitation structure array, an optical coupling structure array and an optical feedback structure, and the input end of the optical feedback structure is connected with one output end of the optical beam splitter tree structure. The optical packaging structure comprises an optical fiber module and the molecular fluorescence detection chip, the optical fiber module is fixed at a preset position of the chip and comprises one or more optical input channels, and the optical input channels are aligned with the input optical coupling unit of the input optical coupling module. According to the passive optical coupling scheme, the optical coupling efficiency does not change along with mechanical vibration of the environment, so that the stability of exciting light in the chip is improved, the stability of a fluorescence signal is further facilitated, meanwhile, the complexity of an optical path of external equipment is also reduced, and the equipment cost is saved. In addition, the number of lasers can be increased in a multi-channel coupling-in mode, so that the in-chip excitation light power is improved, and the signal-to-noise ratio is improved.

The invention provides an automatic testing device for an electrical interface of hardware equipment, which comprises a core control unit, an AT32F415CBT7 single chip microcomputer, an RS232 serial port testing interface and an RS485 serial port testing interface, the test unit comprises eight paths of optical coupling isolation switching value input / output interfaces, a test module power supply input interface, a 24V power supply input interface of equipment to be tested, a state indication LED module and a vacancy detection module which are respectively used for host communication and equipment test, and a travel switch is adopted to detect the occupation state of the test unit, wherein the 24V power supply input interface of the equipment to be tested is powered by an ejector pin. According to the invention, the efficiency and accuracy of hardware equipment interface function testing can be improved, the labor cost is reduced, and batch detection requirements are met.

According to embodiments of the present invention, a parallel scanning confocal microscope is provided. The microscope includes an optical circulator including a first port, a second port and a third port; a light source optically coupled to the first port; an optical arrangement in optical communication with the second port; a focusing lens; and a photodetector optically coupled to the third port. The light source may be configured to emit light towards the optical arrangement along an illumination path. The light may be directed as multiple optical beams towards the focusing lens, which may be configured to focus the beams to confocally and simultaneously illuminate a sample along the illumination path; and to collect light reflected from the sample confocally along a reflection path. The reflected light may be directed towards the photodetector along the reflection path. According to further embodiments, a parallel scanning confocal microscopy method is also provided.

The invention provides an arc voltage sampling circuit and method suitable for a welding power source. The arc voltage sampling circuit comprises an anti-interference absorption unit, a sampling conditioning unit and an isolation conversion unit. The anti-interference absorption unit is electrically connected to the output end of the welding power source so as to collect arc voltage signals. The anti-interference absorption unit comprises two common-mode absorption capacitor banks connected between a positive bus and a negative bus in series, and the middle point of the two common-mode absorption capacitor banks is electrically connected to the ground. The sampling conditioning unit comprises a sampling network and a filter capacitor, the sampling network comprises a plurality of divider resistors connected in series between positive and negative buses, the filter capacitor is connected in parallel with the output of the sampling network, and at least one stage of RC filter is formed between the filter capacitor and the divider resistors in the sampling network. The isolation conversion unit comprises an optical coupling isolator and a conversion circuit. The optical coupling isolator isolates the arc voltage sampling signal and converts the arc voltage sampling signal into a switching value signal or an analog quantity signal with various output amplitudes based on the conversion circuit.

The invention provides a stability detection method and detection device for an optical coupling device, and relates to the technical field of stability detection, and the method comprises the steps: arranging N sensor groups in a working environment of a to-be-detected optical coupling device; the method comprises the following steps: acquiring multi-dimensional working data streams of N optical couplers in real time; carrying out filtering processing and feature extraction on the multi-dimensional working data streams of the N optical couplers by adopting a sliding window mechanism; establishing an optical coupling device stability evaluation channel, performing stability evaluation, and determining stability information of N optical coupling devices; and performing integrated analysis to obtain a stability detection result of the optical coupling device. The technical problem that the stability detection result is inaccurate due to the fact that the photoelectric performance of the optical coupling device has different characteristics in the dynamic working state is solved, the optical coupling device is monitored in real time through the multiple sensor sets, an optical coupling device stability evaluation channel is constructed, and the stability of the optical coupling device is evaluated. And the accuracy and comprehensiveness of stability detection of the optical coupling device are improved.