CN110727056A - Full-automatic PLC chip coupling device, system and method - Google Patents
Full-automatic PLC chip coupling device, system and method Download PDFInfo
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- CN110727056A CN110727056A CN201910838957.6A CN201910838957A CN110727056A CN 110727056 A CN110727056 A CN 110727056A CN 201910838957 A CN201910838957 A CN 201910838957A CN 110727056 A CN110727056 A CN 110727056A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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Abstract
The invention discloses a full-automatic PLC chip coupling device, a system and a method, wherein the coupling device comprises a light source, a PLC chip, a spectroscope, an optical power meter, a CCD (charge coupled device), a processor, a first adjusting mechanism and a second adjusting mechanism, wherein the light source is used for emitting optical signals; the PLC chip receives an optical signal sent by the light source through the input optical fiber and transmits the optical signal to the spectroscope; the spectroscope is used for dividing the optical signal into a first optical signal and a second optical signal; the CCD is used for receiving and processing the first beam of optical signal to obtain a first signal and transmitting the first signal to the processor; the optical power meter is used for receiving and processing the second beam of optical signals to obtain second signals and transmitting the second signals to the processor; the processor is used for controlling the movement of the first adjusting mechanism and/or the second adjusting mechanism according to the first signal and the second signal. By implementing the invention, the coupling of the input optical fiber and the PLC chip is monitored together according to the CCD and the optical power meter, the coupling precision can be improved, the operation is simple and convenient, the coupling efficiency is improved, and the coupling reliability is improved.
Description
Technical Field
The invention relates to the technical field of optical packaging coupling, in particular to a full-automatic PLC chip coupling device, system and method.
Background
At present, The engineering of FTTH (Fiber To The Home) and FTTx (Fiber To The x) is vigorously popularized in various countries, The market demand for planar optical waveguide PLC chips is obviously increased along with The deep development of FTTx construction in China, and The planar optical waveguide PLC chips are probably The key points of The market demand of The next passive device. The number of PLC chips used as an essential component of the system will continue to increase with the deployment nodes of the FTTx network. How to improve the coupling efficiency of the PLC chip becomes a problem to be considered by each manufacturer.
In the coupling process of the PLC chip, the coupling is mostly performed manually at present. However, the manual coupling mode is not only low in efficiency, but also poor in repeatability, so that the coupling and packaging cost of the PLC chip is high, and at present, no efficient method exists for the coupling mode of multiple paths of PLC chips, each path needs to be adjusted manually, and the efficiency is low and the loss is large.
Disclosure of Invention
In view of this, embodiments of the present invention provide a full-automatic PLC chip coupling device, system and method, so as to solve the technical problems of low coupling efficiency and poor repeatability of a PLC chip in the prior art.
The technical scheme provided by the invention is as follows:
a first aspect of an embodiment of the present invention provides a full-automatic PLC chip coupling device, including: the device comprises a light source, a PLC chip, a spectroscope, an optical power meter, a CCD, a processor, a first adjusting mechanism and a second adjusting mechanism, wherein the light source is used for emitting optical signals; the PLC chip receives an optical signal sent by the light source through an input optical fiber and transmits the optical signal to the spectroscope; the spectroscope is used for dividing the optical signal into a first optical signal and a second optical signal; the CCD is used for receiving and processing the first beam of optical signal to obtain a first signal, and transmitting the first signal to the processor; the optical power meter is used for receiving and processing the second beam of optical signals to obtain second signals, and transmitting the second signals to the processor; the processor is used for controlling the movement of the first adjusting mechanism and/or the second adjusting mechanism according to the first signal and the second signal; the first adjusting mechanism is used for adjusting the position of the input optical fiber, and the second adjusting mechanism is used for adjusting the position of the PLC chip.
Optionally, the CCD includes a visible light objective lens for observing initial positions of the input optical fiber and the PLC chip, and the processor is configured to control movement of the first adjustment mechanism and/or the second adjustment mechanism according to the initial positions.
Optionally, the full-automatic PLC chip coupling device further includes: and the driver is connected with the PLC chip and used for inputting a modulation signal to the PLC chip and modulating the phase of the PLC chip.
Optionally, the full-automatic PLC chip coupling device further includes: and the focusing lens is arranged between the PLC chip and the spectroscope.
Optionally, the input optical fiber is any one of a single-mode or multi-mode optical fiber and an optical fiber array.
Optionally, the full-automatic PLC chip coupling device further includes: the ultraviolet dispensing system comprises a dispensing needle head and an ultraviolet lamp, the dispensing needle head is used for dispensing at the coupling position of the input optical fiber and the PLC chip, and the ultraviolet lamp is used for curing the dispensing position.
Optionally, the processor is further configured to adjust the first adjusting mechanism and/or the second adjusting mechanism according to a fourth signal output by the optical power meter after dispensing and a fifth signal output by the CCD.
A second aspect of an embodiment of the present invention provides a full-automatic PLC chip coupling system, where the coupling system includes: the system frame and the full-automatic PLC chip coupling device according to any one of the first aspect and the first aspect of the embodiments of the present invention are disposed in the system frame.
A third aspect of the embodiments of the present invention provides a full-automatic PLC chip coupling method, which is applied to the full-automatic PLC chip coupling device according to any one of the first aspect and the first aspect of the embodiments of the present invention, and the coupling method includes the following steps: acquiring a first signal output by the CCD and a second signal output by the optical power meter; and adjusting a first adjusting mechanism and/or a second adjusting mechanism according to the first signal output by the CCD and the second signal output by the optical power meter, so that the input optical fiber and the PLC chip are aligned for the first time.
Optionally, before acquiring the first signal output by the CCD and the second signal output by the optical power meter, the method further includes: acquiring a visible light observation image output to a processor by the CCD; analyzing and extracting initial positions of the input optical fiber and the PLC chip according to the visible light observation image; and adjusting the position of the first adjusting mechanism and/or the second adjusting mechanism according to the initial position, so that the input optical fiber and the PLC chip are pre-aligned.
Optionally, the full-automatic PLC chip coupling method further includes: inputting a modulation signal to the PLC chip through a driver; and adjusting the modulation signal according to the third signal output by the CCD until the fifth signal reaches a preset value.
Optionally, the full-automatic PLC chip coupling method further includes: and coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip, irradiating the ultraviolet glue by an ultraviolet lamp, and curing the ultraviolet glue.
Optionally, coating an ultraviolet glue at the alignment position of the input optical fiber and the PLC chip, irradiating the ultraviolet glue with an ultraviolet lamp, and curing the ultraviolet glue, including: coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip; adjusting the first adjusting mechanism and/or the second adjusting mechanism according to a fourth signal output by the optical power meter and a fifth signal output by the CCD, so that the input optical fiber and the PLC chip are aligned for the second time; and irradiating the ultraviolet glue by an ultraviolet lamp, and curing the ultraviolet glue.
The technical scheme provided by the embodiment of the invention has the following effects:
compared with the manual coupling mode in the prior art, the full-automatic PLC chip coupling device provided by the embodiment of the invention can improve the coupling precision by jointly monitoring the coupling of the input optical fiber and the PLC chip through the CCD and the optical power meter, and simultaneously adopts the processor adjusting mode, so that the operation is simple and convenient, and the full-automatic coupling of the input optical fiber and the PLC chip can be realized, the coupling efficiency is improved, and the coupling reliability is improved.
According to the full-automatic PLC chip coupling device, system and method provided by the embodiment of the invention, the coupling of the input optical fiber and the PLC chip is adjusted before and after dispensing, the influence of the tension of glue on the coupling efficiency in the dispensing process is prevented, and the consistency of the coupling effect before and after dispensing is ensured. Meanwhile, the high precision of coupling is ensured by double monitoring of output power and output light spots. In addition, the full-automatic PLC chip coupling system provided by the embodiment of the invention can also adjust the initial phase of the chip. Therefore, the full-automatic PLC chip coupling system provided by the embodiment of the invention realizes full-automatic coupling of the PLC chip.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic block diagram of a structure of a full-automatic PLC chip coupling device according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a fully automatic PLC chip coupling device according to another embodiment of the present invention;
FIG. 3 is a schematic block diagram of a fully automatic PLC chip coupling system according to an embodiment of the present invention;
FIG. 4 is a flow chart of a fully automatic PLC chip coupling method in an embodiment of the present invention;
FIG. 5 is a flow chart of a fully automatic PLC chip coupling method according to another embodiment of the present invention;
FIG. 6 is a flow chart of a fully automatic PLC chip coupling method according to another embodiment of the present invention;
FIG. 7 is a flow chart of a fully automatic PLC chip coupling method according to another embodiment of the present invention;
fig. 8 is a flowchart of a fully automatic PLC chip coupling method according to another embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a full-automatic PLC chip coupling device, as shown in fig. 1, the coupling device includes: the device comprises a light source 1, a PLC chip 3, a spectroscope 4, an optical power meter 5, a CCD6, a processor 7, a first adjusting mechanism 8 and a second adjusting mechanism 9, wherein the light source 1 is used for emitting optical signals; the PLC chip 3 receives an optical signal sent by the light source 1 through the input optical fiber 2 and transmits the optical signal to the spectroscope 4; the spectroscope 4 is used for dividing the optical signal into a first optical signal and a second optical signal; the CCD6 is configured to receive and process the first beam of optical signal to obtain a first signal, and transmit the first signal to the processor 7; the optical power meter 5 is used for receiving and processing the second beam of optical signals to obtain second signals, and transmitting the second signals to the processor 7; the processor 7 is used for controlling the movement of the first adjusting mechanism 8 and/or the second adjusting mechanism 9 according to the first signal and the second signal; the first adjusting mechanism 8 is used for adjusting the position of the input optical fiber 2, and the second adjusting mechanism 9 is used for adjusting the position of the PLC chip 3.
Compared with the manual coupling mode in the prior art, the full-automatic PLC chip coupling device provided by the embodiment of the invention can monitor the coupling between the input optical fiber and the PLC chip through the CCD and the optical power meter, can improve the coupling precision, adopts the processor adjusting mode, is simple and convenient to operate, can realize the full-automatic coupling between the input optical fiber and the PLC chip, and improves the coupling efficiency, the reliability of the coupling is increased.
Optionally, the input fiber 2 is any one of a single fiber and a fiber array of single mode or multimode. The angle of the coupling surface of the output end of the input optical fiber 2 is matched with the angle of the coupling surface corresponding to the PLC chip 3. In particular, in practical applications, the input fiber 2 may be a single mode fiber at an angle of 8 °. In addition, the light source 1 may be a laser light source, the laser light source may be connected to the input optical fiber 2 through an optical fiber jumper, and the laser light source may be a light source in a 1550nm band, or may be in other bands, which is not limited in the present invention.
Alternatively, the beam splitter 4 may be a transflective mirror, and the transflective mirror may be made by coating an antireflection film on the reflecting surface of the mirror. The half mirror can make 50% of the light signal enter the light power meter 5 after passing through the half mirror, and the other 50% of the light signal can enter the CCD6 after passing through the reflection of the half mirror. In practical application, the transflective mirror may be a 1550nm infrared transflective mirror, or may be infrared light of any other wavelength band, which is not limited in the present invention.
Specifically, when the coupling device is used to couple the PLC chip 3 and the input fiber 2, the optical signal emitted from the optical source 1 can be input into the input fiber 2 through the optical fiber jumper or other devices, the optical signal output by the input optical fiber 2 enters the PLC chip 3, if the input optical fiber 2 and the PLC chip 3 are not aligned, the optical signal outputted from the input optical fiber 2 cannot completely enter the PLC chip 3, the light spot of the first signal received by the CCD6 cannot reach the preset brightness, the second signal received by the optical power meter 5 cannot reach the preset value, and at this time, the processor 6 may first control the movement of the first adjusting mechanism 8 and/or the second adjusting mechanism 9 according to the received second signal until the second signal reaches a preset value, and then the processor 7 may monitor the form of the light spot in the first signal according to the first signal and observe the quality of the light spot until the first signal reaches the preset value.
Alternatively, during the actual monitoring process, the processor 7 may implement the control of the first adjusting mechanism 8 and/or the second adjusting mechanism 9 according to a pre-written algorithm, and specifically, a sensor may be disposed in the first adjusting mechanism 8 and/or the second adjusting mechanism 9, so as to implement the monitoring of the moving distance of the first adjusting mechanism 8 and/or the second adjusting mechanism 9 by the processor 7.
Alternatively, the first and/or second adjustment mechanisms 8, 9 may be an electric six-axis adjustment stage, and in particular, a high-precision stepper motor may be used to independently control each axis of the adjustment stage. The adjusting table can be provided with a fixing clamp for fixing the input optical fiber 2 or the PLC chip 3, and the fixing clamp can be replaced, so that the adjusting table is suitable for various coupled chips and optical fibers. In addition, a grating scale can be arranged on the adjusting table, and the moving repetition precision of the adjusting table can be controlled to be less than 1 μm.
As an alternative implementation of the embodiment of the present invention, the CCD6 includes a visible light objective lens for observing the initial positions of the input optical fiber 2 and the PLC chip 3, and the processor 7 is configured to control the movement of the first adjustment mechanism 8 and/or the second adjustment mechanism 9 according to the initial positions.
Alternatively, the CCD6 may be an infrared/visible binocular CCD, i.e., CCD6 has 2 switchable infrared and visible objectives of equal magnification under view. When the CCD6 adopts an infrared objective lens, the CCD6 may receive and process the first beam of optical signal to obtain a first signal for detecting the precise alignment of the PLC chip 3 and the input optical fiber 2; when CCD6 adopted the visible light objective, CCD6 can observe the initial position of input fiber 2 and PLC chip 3 to realize the preliminary location of input fiber 2 and PLC chip 3, in addition, CCD6 also can be according to the alignment mark point on the visible light objective seeks PLC chip 3, realizes preliminary location. Specifically, in practical applications, the CCD6 may be first converted to a visible light objective to achieve initial alignment, and then the CCD6 may be converted to an infrared light objective to achieve precise alignment.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 2, the full-automatic PLC chip coupling device further includes: and the focusing lens 10 is arranged between the PLC chip 3 and the spectroscope 4. Specifically, the focusing lens 10 can focus the optical signal output by the PLC chip 3 and then compress the optical signal in the fast and slow axis directions, so as to reduce the divergence angle, so that the light spot observed by the subsequent CCD6 is more circular and the light intensity is higher.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 2, the full-automatic PLC chip coupling device further includes: and the driver 11 is connected to the PLC chip 3, and is configured to input a modulation signal to the PLC chip 3 to modulate a phase of the PLC chip 3.
Specifically, the driver 11 may be connected to the processor 7, after the input optical fiber 2 and the PLC chip 3 are precisely aligned, the processor 7 may issue a driving instruction to the driver 11, and the driver 11 inputs a modulation signal to the PLC chip 3 according to the driving instruction, where the driver 11 may include an FPGA circuit board, and the modulation signal may adjust a duty ratio of each path on the FPGA circuit board, thereby adjusting an input current of each path of phase modulation in the multiple PLC chips 3. In addition, the PLC chip 3 may be a chip including an optical modulator, the modulator may modulate the PLC chip 3 in different modulation modes such as electro-optical, thermo-optical, acousto-optical, and all-optical, when the modulator adopts thermo-optical effect, the input current output by the FPGA circuit board may be injected into the PLC chip 3 through the modulator, and the PLC chip 3 may generate a change in waveguide temperature under the action of the thermo-optical effect and the input current of the modulator to cause a phase change, thereby realizing scanning of the first beam of optical signal.
In practical application, when a modulation signal modulates the phase of the PLC chip 3, the infrared objective lens of the CCD6 monitors the light spot output by the PLC chip 3, and inputs the monitoring result into the processor 7, the processor 7 analyzes the monitoring result by a preset algorithm (such as a genetic algorithm, etc.), if the light spot cannot reach a preset value, the processor issues an instruction again to the driver 11, adjusts the duty ratio on the FPGA circuit board until the light spot is monitored to reach the preset value, that is, the concentration and the side lobe effect of the light spot in the monitoring result both reach the preset value, and in this process, the value output by the optical power meter can be modulated as an aid.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 3, the full-automatic PLC chip coupling device further includes: the ultraviolet dispensing system comprises a dispensing needle head 12 and an ultraviolet lamp 13, wherein the dispensing needle head 12 is used for dispensing at the coupling position of the input optical fiber 2 and the PLC chip 3, and the ultraviolet lamp 13 is used for curing the dispensing position. In addition, this ultraviolet point system of gluing can also include step motor, grating chi, rubber tube, pneumatic valve, removable syringe needle etc. can realize the high accuracy removal of some glue syringe needles and a little glue volume is controllable.
Optionally, the ultraviolet dispensing system may be connected to the processor 7, and after the processor 7 monitors that the concentration of the light spot and the sidelobe effect in the phase modulation process of the PLC chip 3 all reach a preset value, the dispensing needle 12 may be controlled to dispense at the coupling position of the input optical fiber 2 and the PLC chip 3, and during specific dispensing, the input optical fiber 2 and the PLC chip 3 may be pulled apart by a short distance (usually 1-2mm), and the dispensing is performed at the gap between the end surfaces of the input optical fiber 2 and the PLC chip 3, and then the input optical fiber 2 and the PLC chip 3 are moved to be attached.
Optionally, after dispensing, since glue of different materials still has a certain tension, which may affect the coupling efficiency, coupling adjustment needs to be performed again after dispensing, at this time, the processor 7 may control the first adjusting mechanism 8 and/or the second adjusting mechanism 9 to move again according to the fifth signal output by the CCD6 and the fourth signal output by the optical power meter 5 until both the fifth signal output by the CCD6 and the fourth signal output by the optical power meter 5 reach preset values. Then, the processor 7 may control the ultraviolet lamp 13 to be turned on, and cure the spot gluing part, and the specific curing process, such as curing time, irradiation power, etc., may be determined according to actual needs.
An embodiment of the present invention further provides a full-automatic PLC chip coupling system, as shown in fig. 3, the coupling system includes: the system frame 14 and the full-automatic PLC chip coupling device, which may be the full-automatic PLC chip coupling device described in any of the above embodiments, are described in detail in any of the above embodiments for structure and function, and are not described herein again. The fully automatic PLC chip coupling device is disposed in the system frame 14. The processor 7 may be disposed outside the system frame 14, and connected to other parts through the system frame 14.
Specifically, system frame 14 provides electrical connection and structural support for whole full-automatic PLC chip coupling device, and this system frame has also integrateed functions such as light-resistant, take precautions against earthquakes, prevent static, electromagnetic isolation, the interference of outside to full-automatic PLC chip coupling device has been reduced, and this coupled system's operating space need be kept apart to light simultaneously, makes entire system's operating space be in one airtight, among the opaque environment, need carry out visible light observation time measuring, can provide light compensation, therefore, this system has good appearance and reliable structure, be applicable to production and experimental environment.
According to the full-automatic PLC chip coupling system provided by the embodiment of the invention, the coupling of the input optical fiber and the PLC chip is adjusted before and after dispensing, the influence of the tension of glue on the coupling efficiency in the dispensing process is prevented, and the consistency of the coupling effect before and after dispensing is ensured. Meanwhile, the high precision of coupling is ensured by double monitoring of output power and output light spots. In addition, the full-automatic PLC chip coupling system provided by the embodiment of the invention can also adjust the initial phase of the chip. Therefore, the full-automatic PLC chip coupling system provided by the embodiment of the invention realizes full-automatic coupling of the PLC chip.
An embodiment of the present invention further provides a full-automatic PLC chip coupling method, which is applied to the full-automatic PLC chip coupling device according to any one of the above embodiments, and as shown in fig. 4, the coupling method specifically includes the following steps:
step S101: acquiring a first signal output by a CCD (charge coupled device) and a second signal output by an optical power meter; specifically, before the first signal and the second signal are obtained, the cleaned input optical fiber may be fixed to the first adjusting mechanism, the cleaned PLC chip may be fixed to the second adjusting mechanism, the spectroscope may be disposed behind the PLC chip, and the CCD and the optical power meter may be disposed in two light-emitting directions of the spectroscope, respectively. The light source is arranged in front of the input optical fiber, and transmits a light signal to the input optical fiber, the light signal is divided into a first light beam signal and a second light beam signal after sequentially passing through the PLC chip and the beam splitter, the first light beam signal is processed by the CCD to obtain a first signal, and the second light beam signal is processed by the optical power meter to obtain a second signal.
Step S102: and adjusting the first adjusting mechanism and/or the second adjusting mechanism according to the first signal output by the CCD and the second signal output by the optical power meter, so that the input optical fiber and the PLC chip are aligned for the first time. Specifically, after an optical signal emitted by a light source enters an input optical fiber, a CCD (charge coupled device) can transmit an observed first signal, namely an infrared light observation image, to a processor, and the processor can acquire the shape and the position of a light spot in the image according to the infrared light observation image; the optical power meter transmits a second signal, namely the optical power output by the PLC chip, to the processor, and the processor can judge whether the optical power reaches a preset value or not according to the optical power; the processor can then adjust the first adjustment mechanism and/or the second adjustment mechanism based on the acquired first signal and second signal such that the input fiber and the PLC chip are aligned for a first time.
Compared with the manual coupling mode in the prior art, the full-automatic PLC chip coupling method provided by the embodiment of the invention can realize the accurate alignment of the input optical fiber and the PLC chip by jointly monitoring the coupling of the input optical fiber and the PLC chip through the CCD and the optical power meter, can improve the coupling precision, simultaneously adopts the processor adjusting mode, is simple and convenient to operate, can realize the full-automatic coupling of the input optical fiber and the PLC chip, and improves the coupling efficiency, the reliability of the coupling is increased.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 5, before acquiring the first signal output by the CCD and the second signal output by the optical power meter, the fully automatic PLC chip coupling method further includes the following steps:
step S201: acquiring a visible light observation image output to a processor by the CCD; specifically, before the light source does not emit the optical signal, the CCD may be switched under the visible objective lens to acquire a visible observation image including the input optical fiber and the PLC chip.
Step S202: analyzing and extracting initial positions of an input optical fiber and a PLC chip according to the visible light observation image; specifically, the processor may extract initial positions of the input optical fiber and the PLC chip in the image from the visible light observation image. In addition, if the PLC chip is provided with the alignment mark point in advance, the alignment mark point of the PLC chip may be searched from the visible light observation image.
Step S203: and adjusting the position of the first adjusting mechanism and/or the second adjusting mechanism according to the initial position, so that the input optical fiber and the PLC chip are pre-aligned. Specifically, after acquiring the initial positions of the input optical fiber and the PLC chip, the processor may adjust the positions of the first adjusting mechanism and/or the second adjusting mechanism according to the initial positions, so that the input optical fiber and the PLC chip are pre-aligned. Meanwhile, the position of the first adjusting mechanism and/or the second adjusting mechanism can be adjusted according to the alignment mark points of the PLC chip, so that the input optical fiber and the PLC chip are pre-aligned.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 6, the full-automatic PLC chip coupling method further includes the following steps:
step S301: inputting a modulation signal to the PLC chip through a driver; specifically, the driver may be connected to the processor, and after the input optical fiber and the PLC chip are aligned for the first time, the processor may issue a driving instruction to the driver, and the driver inputs a modulation signal to the PLC chip according to the driving instruction, where the driver may include an FPGA circuit board, and the modulation signal may adjust a duty ratio of each path on the FPGA circuit board, thereby adjusting an input current of each path of phase modulation in the multiple paths of PLC chips. In addition, the PLC chip can be a chip containing an optical modulator, the modulator can modulate the PLC chip in different modulation modes of electro-optic, thermo-optic, acousto-optic, all-optic and the like, when the modulator adopts thermo-optic effect, input current output by the FPGA circuit board can be injected into the PLC chip through the modulator, and the PLC chip can generate the change of waveguide temperature under the action of the thermo-optic effect and the input current of the modulator so as to cause phase change and realize the scanning of the first beam of optical signal.
Step S302: and adjusting the modulation signal according to a third signal output by the CCD until the third signal reaches a preset value. Specifically, after the PLC chip receives the modulation signal, the infrared objective lens of the CCD monitors the light spot output by the PLC chip, outputs a third signal and transmits the third signal to the processor, the processor analyzes the light spot in the third signal through a preset algorithm (such as a genetic algorithm) and issues an instruction again to adjust the modulation signal if the light spot cannot reach a preset value, so that the duty ratio on the FPGA circuit board is adjusted until the light spot in the third signal is monitored to reach the preset value, namely the concentration and the side lobe effect of the light spot reach the preset value at the moment.
As an optional implementation manner of the embodiment of the present invention, the full-automatic PLC chip coupling method further includes:
and coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip, irradiating the ultraviolet glue by an ultraviolet lamp, and curing the ultraviolet glue. Specifically, after the light spot in the third signal reaches a preset value, that is, the concentration and the side lobe effect of the light spot both reach preset values, ultraviolet glue may be coated at the alignment position of the input optical fiber and the PLC chip, and then the ultraviolet glue is irradiated by the ultraviolet lamp to be cured.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 7, coating an ultraviolet glue at an alignment position of an input optical fiber and a PLC chip, irradiating the ultraviolet glue with an ultraviolet lamp, and curing the ultraviolet glue includes the following steps:
step S401: and coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip. Specifically, after the light spot in the third signal reaches a preset value, that is, both the concentration and the side lobe effect of the light spot reach the preset value, ultraviolet glue may be applied to the aligned position of the input optical fiber and the PLC chip. Optionally, after the processor monitors that the concentration and the sidelobe effect of the light spot in the phase modulation process of the PLC chip both reach a preset value, the dispensing needle head can be controlled to dispense at the coupling position of the input optical fiber and the PLC chip, during specific dispensing, the input optical fiber and the PLC chip can be pulled apart by a short distance (usually 1-2mm), dispensing is performed at the gap between the input optical fiber and the end face of the PLC chip, and then the input optical fiber and the PLC chip are moved to be attached.
Step S402: adjusting the first adjusting mechanism and/or the second adjusting mechanism according to a fourth signal output by the optical power meter and a fifth signal output by the CCD, so that the input optical fiber and the PLC chip are aligned for the second time; specifically, after dispensing, since glue of different materials still has a certain tension, which may affect the coupling efficiency, coupling adjustment needs to be performed again after dispensing, and at this time, the processor may control the first adjusting mechanism and/or the second adjusting mechanism to move again according to the fourth signal and the fifth signal output by the optical power meter and the CCD until the signals output by the CCD and the optical power meter both reach the preset values, so that the input optical fiber and the PLC chip are aligned for the second time.
Step S403: and irradiating the ultraviolet glue by an ultraviolet lamp to cure the ultraviolet glue. Specifically, the processor can control the ultraviolet lamp to be lightened, the dispensing position is cured, and the specific curing process such as curing time, irradiation power and the like can be determined according to actual needs.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 8, the full-automatic PLC chip coupling method may be performed according to the following processes: carrying out alignment coarse adjustment on the input optical fiber and the PLC chip according to the visible light observation image output by the CCD; the method comprises the steps of conducting light transmission on an input optical fiber, conducting alignment fine adjustment on the input optical fiber and a PLC chip according to optical power and light spots, and judging whether the optical power reaches a preset value (maximum value) or not by taking the optical power as a main monitoring object in the process; the PLC chip is subjected to phase modulation according to the modulation signal, and in the process, the light spot can be taken as a main monitoring object to judge whether the light spot reaches a preset value (the light spot is optimal); and finally, carrying out dispensing curing on the coupling position.
According to the full-automatic PLC chip coupling method provided by the embodiment of the invention, the coupling of the input optical fiber and the PLC chip is adjusted before and after dispensing, the influence of the tension of glue on the coupling efficiency in the dispensing process is prevented, and the consistency of the coupling effect before and after dispensing is ensured. Meanwhile, the high precision of coupling is ensured by double monitoring of output power and output light spots. In addition, the full-automatic PLC chip coupling method provided by the embodiment of the invention can also adjust the initial phase of the chip. Therefore, the full-automatic PLC chip coupling method provided by the embodiment of the invention realizes the full-automatic coupling of the PLC chip.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (13)
1. A full-automatic PLC chip coupling device, characterized in that includes: a light source, a PLC chip, a spectroscope, an optical power meter, a CCD, a processor, a first adjusting mechanism and a second adjusting mechanism, wherein,
the light source is used for emitting a light signal;
the PLC chip receives an optical signal sent by the light source through an input optical fiber and transmits the optical signal to the spectroscope;
the spectroscope is used for dividing the optical signal into a first optical signal and a second optical signal;
the CCD is used for receiving and processing the first beam of optical signal to obtain a first signal, and transmitting the first signal to the processor;
the optical power meter is used for receiving and processing the second beam of optical signals to obtain second signals, and transmitting the second signals to the processor;
the processor is used for controlling the movement of the first adjusting mechanism and/or the second adjusting mechanism according to the first signal and the second signal; the first adjusting mechanism is used for adjusting the position of the input optical fiber, and the second adjusting mechanism is used for adjusting the position of the PLC chip.
2. The fully automatic PLC chip coupling apparatus of claim 1, wherein the CCD includes a visible objective lens for observing an initial position of the input optical fiber and PLC chip, the processor being configured to control movement of the first adjustment mechanism and/or the second adjustment mechanism based on the initial position.
3. The fully automatic PLC chip coupling device according to claim 1, further comprising: and the driver is connected with the PLC chip and used for inputting a modulation signal to the PLC chip and modulating the phase of the PLC chip.
4. The fully automatic PLC chip coupling device according to claim 1, further comprising: and the focusing lens is arranged between the PLC chip and the spectroscope.
5. The full-automatic PLC chip coupling device according to claim 1, wherein the input optical fiber is any one of a single optical fiber and an optical fiber array of a single mode or a multi-mode.
6. The fully automatic PLC chip coupling device according to claim 1, further comprising: the ultraviolet dispensing system comprises a dispensing needle head and an ultraviolet lamp, the dispensing needle head is used for dispensing at the coupling position of the input optical fiber and the PLC chip, and the ultraviolet lamp is used for curing the dispensing position.
7. The full-automatic PLC chip coupling device of claim 6, wherein the processor is further configured to adjust the first adjusting mechanism and/or the second adjusting mechanism according to a fourth signal output by the optical power meter after dispensing and a fifth signal output by the CCD.
8. A full-automatic PLC chip coupling system, characterized in that includes: the system frame and the full-automatic PLC chip coupling device of any one of claims 1-7, the full-automatic PLC chip coupling device disposed in the system frame.
9. A full-automatic PLC chip coupling method, applied to the full-automatic PLC chip coupling apparatus according to any one of claims 1 to 7, comprising the steps of:
acquiring a first signal output by the CCD and a second signal output by the optical power meter;
and adjusting a first adjusting mechanism and/or a second adjusting mechanism according to the first signal output by the CCD and the second signal output by the optical power meter, so that the input optical fiber and the PLC chip are aligned for the first time.
10. The method of claim 9, wherein before obtaining the first signal output by the CCD and the second signal output by the optical power meter, the method further comprises:
acquiring a visible light observation image output to a processor by the CCD;
analyzing and extracting initial positions of the input optical fiber and the PLC chip according to the visible light observation image;
and adjusting the position of the first adjusting mechanism and/or the second adjusting mechanism according to the initial position, so that the input optical fiber and the PLC chip are pre-aligned.
11. The method of claim 9, further comprising:
inputting a modulation signal to the PLC chip through a driver;
and adjusting the modulation signal according to a third signal output by the CCD until the third signal reaches a preset value.
12. The method of claim 9, further comprising:
and coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip, irradiating the ultraviolet glue by an ultraviolet lamp, and curing the ultraviolet glue.
13. The method of claim 12, wherein the step of coating the input optical fiber and the PLC chip with uv glue at the alignment position, irradiating the uv glue with a uv lamp, and curing the uv glue comprises:
coating ultraviolet glue at the alignment position of the input optical fiber and the PLC chip;
adjusting the first adjusting mechanism and/or the second adjusting mechanism according to a fourth signal output by the optical power meter and a fifth signal output by the CCD, so that the input optical fiber and the PLC chip are aligned for the second time;
and irradiating the ultraviolet glue by an ultraviolet lamp, and curing the ultraviolet glue.
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