CN116112068A - Optical module test coupling system, method, control device and storage medium - Google Patents

Optical module test coupling system, method, control device and storage medium Download PDF

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Publication number
CN116112068A
CN116112068A CN202211626764.2A CN202211626764A CN116112068A CN 116112068 A CN116112068 A CN 116112068A CN 202211626764 A CN202211626764 A CN 202211626764A CN 116112068 A CN116112068 A CN 116112068A
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optical
emission
receiving
channel
channels
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乔羽
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TP Link Technologies Co Ltd
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TP Link Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

The invention belongs to the field of optical modules, and provides an optical module test coupling system, an optical module test coupling method, a control device and a storage medium, wherein the system comprises an optical switch module and the control device; the optical switch module is electrically connected with the control device; in the first test process, the optical switch module is configured to be physically connected with the emission lenses of all emission channels of the first optical module, the optical power meter and the annular flux tester, the control device is configured to be electrically connected with the optical power meter and the annular flux tester, and control the optical switch module to transmit optical signals passing through the emission lenses of all emission channels to the optical power meter and the annular flux tester, so as to obtain the emitted optical power of all emission channels detected by the optical power meter and the annular flux of all emission channels detected by the annular flux tester. The invention can test the optical power and the annular flux of the first optical module at the same time, and has high test efficiency.

Description

Optical module test coupling system, method, control device and storage medium
Technical Field
The invention belongs to the field of Optical modules (Optical modules), and particularly relates to an Optical Module test coupling system, an Optical Module test coupling method, a control device and a storage medium.
Background
The existing multimode optical module mainly uses a laser as a light source and uses an optical fiber as a waveguide medium. In addition to the requirements for the emitted optical power (Output Optical Power, OOP) in multimode optical module protocols, the annular Flux (EF) of the light source is also constrained. EF is used to characterize the optical energy distribution of the optical signal emitted by the optical source, and the magnitude of EF of the optical signal injected into the fiber affects the differential mode delay (Differential Mode Delay, DMD) of the optical communication system. For a typical rate (e.g., 10Gbps/25 Gbps) optical communication system, less than 30% of the optical energy is required to be distributed within a 9um diameter fiber optic circle, and more than 86% of the optical energy is required to be distributed within a 38um diameter fiber optic circle. Poor annular flux index may cause poor indexes such as optical power, optical eye pattern, error code, etc. of the multimode optical module.
The coupling between the light source and the optical components such as the emission lens in a multimode optical module is typically an active coupling based on optical power. The conventional coupling platform does not have the annular flux testing capability, and is usually connected to an annular flux tester for annular flux testing after the multimode optical module is packaged, and at the moment, if indexes are poor, the multimode optical module needs to be reworked, and the production efficiency and the yield are reduced by reworking.
Disclosure of Invention
In view of this, the embodiment of the invention provides an optical module test coupling system, an optical module test coupling method and a storage medium, which aim to solve the problem that a conventional coupling platform does not have annular flux test capability.
A first aspect of an embodiment of the present invention provides an optical module test coupling system, including an optical switch module and a control device;
the optical switch module is electrically connected with the control device;
in a first test procedure, the optical switch module is configured to:
the transmitting lenses of the M transmitting channels of the first optical module, the optical power meter and the annular flux tester are physically connected;
during the first test, the control device is configured to:
the optical power meter is electrically connected with the annular flux tester;
controlling the optical switch module to transmit optical signals transmitted by the transmitting lenses of the M transmitting channels to the optical power meter and the annular flux tester respectively;
acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the M emitting channels detected by the annular flux tester;
wherein M is the total number of emission channels of the first optical module.
In one embodiment, the optical switch module includes a first optical switch and a first optical splitter;
the controlled end of the first optical switch is electrically connected with the control device, and the output end of the first optical switch is physically connected with the input end of the first optical splitter;
during the first test, the first optical switch is configured to:
the M input ends of the first optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner;
during the first test, the first optical splitter is configured to:
the first output end of the first optical splitter is physically connected with one input end of the optical power meter, and the second output end of the first optical splitter is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
the laser is electrically connected with the lasers of the M emission channels;
controlling the laser of the ith emission channel to emit an optical signal;
the optical path between the ith input end and the output end of the first optical switch is connected, and the optical path between the remaining M-1 input ends and the output end of the first optical switch is disconnected, so that the optical signals transmitted through the emission lens of the ith emission channel are transmitted to the optical power meter and the annular flux tester after being split by the first optical splitter;
Acquiring the emitted light power of the ith emission channel detected by the light power meter and the annular flux of the ith emission channel detected by the annular flux tester;
where i=1, 2, …, M.
In one embodiment, the optical switch module comprises a second optical switch;
the controlled end of the second optical switch is electrically connected with the control device;
during the first test, the second optical switch is configured to:
the M input ends of the second optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, the first output end of the second optical switch is physically connected with one input end of the optical power meter, and the second output end of the second optical switch is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
the laser is electrically connected with the lasers of the M emission channels;
controlling lasers of the ith emission channel and the jth emission channel to emit optical signals;
switching on an optical path between an ith input end and a first output end of the second optical switch and an optical path between a jth input end and a second output end of the second optical switch, and switching off the optical paths between the remaining M-2 input ends of the second optical switch and the first output end and the second output end, so that an optical signal transmitted through a transmitting lens of the ith transmitting channel is transmitted to the optical power meter and an optical signal transmitted through a transmitting lens of the jth transmitting channel is transmitted to the annular flux tester;
Acquiring the emitted light power of the ith emission channel detected by the light power meter and the annular flux of the jth emission channel detected by the annular flux tester;
where i=1, 2, …, M, j=1, 2, …, M, i+notej, m+.gtoreq.2.
In one embodiment, the optical switch module includes a third optical switch;
the third optical switch is electrically connected with the control device;
during the first test, the third optical switch is configured to:
the M input ends of the third optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, the 1 st to M output ends of the third optical switch are respectively and physically connected with the 1 st to M input ends of the optical power meter in a one-to-one correspondence manner, and the M+1 th output end of the third optical switch is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
the optical paths between the ith input end and the M+1th output end of the third optical switch and the optical paths between the remaining M-1 input ends and the corresponding M-1 output ends are connected, so that optical signals transmitted through the transmitting lenses of the ith transmitting channel are transmitted to the annular flux tester, and optical signals transmitted through the transmitting lenses of the remaining M-1 transmitting channels are transmitted to the M-1 input ends of the optical power meter in a one-to-one correspondence;
Acquiring the annular flux of the ith emission channel detected by the annular flux tester and the emission light power of the remaining M-1 emission channels detected by the light power meter;
wherein i=1, 2, …, M is not less than 2.
In one embodiment, the optical switch module includes a fourth optical switch and a second optical splitter;
the fourth optical switch is electrically connected with the control device, and the M+1th output end of the fourth optical switch is physically connected with the input end of the second optical splitter;
during the first test, the fourth optical switch is configured to:
the M input ends of the fourth optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, and the 1 st to M output ends of the fourth optical switch are respectively and physically connected with the 1 st to M input ends of the optical power meter in a one-to-one correspondence manner;
during the first test, the second optical splitter is configured to:
the first output end of the second optical divider is physically connected with the (M+1) th input end of the optical power meter, and the second output end of the second optical divider is physically connected with the input end of the annular flux tester;
In the first test procedure, the control device is specifically configured to:
the optical paths between the ith input end and the M+1 th output end of the fourth optical switch and the optical paths between the remaining M-1 th input ends and the corresponding M-1 th output ends are connected, so that optical signals transmitted through the emission lenses of the ith emission channel are respectively transmitted to the M+1 th input ends of the optical power meter, the annular flux tester and the M-1 input ends of the optical power meter after being split by the second optical splitter;
acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the ith emitting channel detected by the annular flux tester;
wherein i=1, 2, …, M is not less than 2.
In one embodiment, M is more than or equal to 2, the first optical module is not packaged, and the emission lenses of the M emission channels are integrally arranged;
based on the first test procedure, in a first coupling debugging procedure, the control device is further configured to:
is electrically connected with the displacement system;
controlling the displacement system to adjust the positions of the emitting lenses of the M emitting channels relative to the laser according to the emitting light power of the 1 st emitting channel and the M emitting channel respectively so as to maximize the emitting light power of the 1 st emitting channel and the M emitting channel;
Under the condition that the emission light power of the 1 st emission channel and the M th emission channel is maximum, if the emission light power of the rest emission channels is qualified, outputting a coupling debugging result representing that the emission light power of the M emission channels is qualified; otherwise, outputting a coupling debugging result representing that the emission light power of the residual emission channel is unqualified.
In one embodiment, during the second test, the control device is configured to:
the first optical module is electrically connected with a built-in register of the second optical module;
acquiring receiving parameters of N receiving channels of the second optical module from the built-in register;
acquiring the receiving indexes of the N receiving channels according to the receiving parameters;
the receiving parameters comprise at least one of the positive emitter coupling logic level and the receiving signal intensity of the N receiving channels, the receiving index comprises at least one of the receiving optical power and the receiving sensitivity, N is the total number of the receiving channels of the second optical module, and N is less than or equal to M.
In one embodiment, N is greater than or equal to 2, the second optical module is not packaged, and the receiving lenses of the N receiving channels are integrally arranged;
based on the second test procedure, in a second coupling debugging procedure, the control device is further configured to:
Is electrically connected with the displacement system;
controlling the displacement system to adjust the positions of the receiving lenses of the N receiving channels relative to the optical detector according to the receiving indexes of the 1 st receiving channel and the N receiving channel respectively so as to maximize the receiving indexes of the 1 st receiving channel and the N receiving channel;
outputting a coupling debugging result representing that the receiving indexes of the N receiving channels are qualified if the receiving indexes of the rest receiving channels are qualified under the condition that the receiving indexes of the 1 st receiving channel and the N receiving channel are the largest; otherwise, outputting a coupling debugging result representing that the receiving index of the residual receiving channel is unqualified.
In one embodiment, the optical module test coupling system further comprises at least one of an optical power meter, a ring-shaped flux tester, a displacement system, and a light source device.
A third aspect of an embodiment of the present invention provides an optical module test coupling method, which is applied to a control device in an optical module test coupling system provided in the first aspect of the embodiment of the present invention, where the method includes:
controlling the optical switch module to transmit optical signals transmitted by the transmitting lenses of the M transmitting channels to the optical power meter and the annular flux tester respectively;
And acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the M emitting channels detected by the annular flux tester.
A third aspect of the embodiment of the present invention provides a control apparatus, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and further including an input-output device or electrically connected to the input-output device, where the processor implements the steps of the optical module test coupling method provided in the second aspect of the embodiment of the present invention when the processor executes the computer program.
A fourth aspect of the embodiments of the present invention provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the optical module test coupling method provided by the second aspect of the embodiments of the present invention.
The optical module test coupling system provided by the first aspect of the embodiment of the invention 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 of optical power and annular flux of the first optical module, the optical switch module is configured to be physically connected with the transmitting lenses of all transmitting channels of the first optical module, the optical power meter and the annular flux tester, and the control device is configured to be electrically connected with the optical power meter and the annular flux tester, so that the control device can control the optical switch module to respectively transmit optical signals transmitted by the transmitting lenses of all transmitting channels to the optical power meter and the annular flux tester, and obtain the transmitting optical power of all transmitting channels detected by the optical power meter and the annular flux of all transmitting channels detected by the annular flux tester, so that the optical module test coupling system has the capability of simultaneously testing the optical power and the annular flux of the first optical module, the test efficiency is high, and when the optical module test coupling system is applied to an unpackaged first optical module, the probability of reworking caused by poor indexes after the encapsulation of the first optical module can be effectively reduced, and the production efficiency and the yield are improved.
It will be appreciated that the advantages of the second to fourth aspects may be found in the relevant description of the first aspect and are not described in detail herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be calculated according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a first structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a first optical module test coupling method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a third structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a fourth structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a fifth structure of an optical module test coupling system according to an embodiment of the present invention;
Fig. 7 is a schematic diagram of a sixth structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 8 is a second flowchart of an optical module test coupling method according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating a position of a first optical module according to an embodiment of the present invention;
fig. 10 is a third flow chart of an optical module test coupling method according to an embodiment of the present invention;
fig. 11 is a fourth flowchart of an optical module test coupling method according to an embodiment of the present invention;
fig. 12 is a fifth flowchart of an optical module test coupling method according to an embodiment of the present invention;
fig. 13 is a schematic diagram of a seventh structure of an optical module test coupling system according to an embodiment of the present invention;
fig. 14 is a sixth flowchart of an optical module test coupling method according to an embodiment of the present invention;
fig. 15 is an eighth structural schematic diagram of an optical module test coupling system according to an embodiment of the present invention;
fig. 16 is a seventh flowchart of an optical module test coupling method according to an embodiment of the present invention;
fig. 17 is an eighth flowchart of an optical module test coupling method according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of a control device according to an embodiment of the present invention.
Reference numerals:
the optical switch module 1, the first optical switch 11, the first optical splitter 12, the second optical switch 13, the third optical switch 14, the fourth optical switch 15 and the second optical splitter 16;
a control device 2, a processor 21, a memory 22, a computer program 23;
the first optical module 3, the emission lenses 311-31M, the lasers 321-32M;
an optical power meter 4;
a ring-shaped flux tester 5;
a displacement system 6;
the second optical module 7, the receiving lenses 711 to 71N, the photodetectors 721 to 72N, the preamplifiers 731 to 73N, and the built-in registers 74;
a light source device 8.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise by other means. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise. The term "plurality" and variations thereof mean "two" or "more than two".
The embodiment of the invention provides an optical module test coupling system which can be applied to six scenes including but not limited to:
emitted light power and annular flux test of emitting channels of scene one and multimode light modules
Performing emitted light power and annular flux test on an emitted channel of the multimode optical module by using an optical power meter and an annular flux tester to determine whether the emitted light power and the annular flux of the emitted channel of the multimode optical module meet the design requirements of a multimode optical module protocol;
Coupling tuning of emission lenses of emission channels of scene two, unpackaged multimode optical modules
Under the condition that the multimode optical module is not packaged, based on a first scene, according to at least one of the emitted light power and the annular flux of an emitting channel of the multimode optical module, the position of an emitting lens of the multimode optical module relative to a laser is adjusted, so that after the position of the emitting lens is adjusted, the emitted light power and the annular flux of the emitting channel of the multimode optical module both meet the design requirement of a multimode optical module protocol;
receiving index test of receiving channel of third scene and optical module
The method comprises the steps of utilizing a control module to read a receiving parameter stored in a built-in register of an optical module and processing the receiving parameter into a receiving index, and performing a receiving index test on a receiving channel of the optical module to determine whether the receiving index of the receiving channel of the optical module meets the design requirement of an optical module protocol, wherein the optical module can be a single-mode optical module or a multi-mode optical module, the receiving parameter can be the level of a positive emitter coupling logic (Positive Emitter Coupled Logic, PECL) or the intensity of a receiving signal (Received Signal Strength Indicator, RSSI) output by a preamplifier of the receiving channel, and the receiving index can be the receiving optical power (Input Optical Power, IOP) or the receiving sensitivity (Receive Sensitivity, RS);
Coupling debugging of receiving lenses of receiving channels of scene four, unpackaged optical modules
Under the condition that the optical module is not packaged, based on a third scene, according to the receiving index of the receiving channel of the optical module, the position of the receiving lens of the optical module relative to the laser is adjusted, so that after the position of the receiving lens is adjusted, the receiving index of the receiving channel of the optical module accords with the design requirement of an optical module protocol;
light emitting power test of light emitting channel of scene five and single mode light module
Performing emission optical power test on the emission channel of the single-mode optical module by using an optical power meter to determine whether the emission optical power of the emission channel of the single-mode optical module meets the design requirement of a single-mode optical module protocol;
coupling tuning of emission lenses of emission channels of scene six, unpackaged single-mode optical modules
Under the condition that the single-mode optical module is not packaged, based on a scene five, according to the emitted light power of an emitted channel of the single-mode optical module, the position of an emitted lens of the single-mode optical module relative to a laser is adjusted, so that the emitted light power of the emitted channel of the single-mode optical module accords with the design requirement of a single-mode optical module protocol after the position of the emitted lens is adjusted.
In the application, the optical module test coupling system can be adopted to test or couple and debug any type of optical module according to actual needs. The optical modules may be single-mode optical modules or multi-mode optical modules, divided according to the mode of each channel of the optical module. The optical modules are divided according to the number of channels of the optical modules, and the optical modules can be single-channel optical modules or multi-channel optical modules. The optical module may be an optical transmitting module (Transmitter) having only an optical transmitting function, an optical receiving module (Receiver) having only an optical receiving function, an optical transmitting-receiving integrated module (Transmitter) having both optical transmitting and optical receiving functions, or an optical forwarding module (Transmitter), which are divided according to the transmitting-receiving functions of the optical module.
In applications, the light emitting module is typically composed of light emitting devices (e.g., lasers), emission lenses, functional circuits (e.g., circuit boards (Printed Circuit Board, PCBs)), interfaces (e.g., fiber optic interfaces, electrical interfaces, etc.), and the like. The light receiving module is generally composed of a light receiving device (e.g., a photodetector), a receiving lens, a preamplifier, a functional circuit, an interface, and the like. The optical transceiver module and the optical forwarding module are generally composed of an optical transmitting subassembly, a transmitting lens, a receiving lens, a preamplifier, a functional circuit, an interface and the like.
In an application, the Laser may be a semiconductor Laser (LD), for example a vertical cavity surface emitting Laser (Vertical Cavity Surface Emitting Laser, VCSEL). The photodetector may be implemented by any device having a photoelectric conversion function, for example, a Photodiode (PD).
As shown in fig. 1, the optical module test coupling system provided by the invention comprises an optical switch module 1 and a control device 2, wherein the optical switch module 1 is electrically connected with the control device 2.
In application, based on the difference of application scenes of the optical module test coupling system, the optical switch module and the control device are different in external devices which need to be connected under different application scenes.
As shown in fig. 1, the connection relationship between the optical switch module 1 and the control device 2 and the external device is exemplarily shown in a first test process of performing the emitted light power and the annular flux test on the emission channel of the first optical module 3;
wherein the optical switch module 1 is configured to:
the optical power meter 4 and the annular flux tester 5 are physically connected with the emission lenses 311-31M (namely 311, 312, … and 31M) of M emission channels of the first optical module 3;
the control device 2 is configured to:
Is electrically connected with the optical power meter 4 and the annular flux tester 5; and
the first optical module testing method is executed, as shown in fig. 2, and includes the following steps S101 and S102:
step S101, controlling the optical switch module 1 to respectively transmit optical signals transmitted through the emitting lenses 311-31M of the M emitting channels to the optical power meter 4 and the annular flux tester 5;
step S102, the emitted light power of M emitted channels detected by the light power meter 4 and the annular flux of M emitted channels detected by the annular flux tester 5 are obtained.
In an application, M is the total number of emission channels of a first optical module, which is a multimode optical module. The first optical module may be a single-mode single-channel optical receiving module, a single-mode single-channel optical transceiver module, a multimode multi-channel optical transmitting module or a multimode multi-channel optical transceiver module, where the multimode multi-channel optical transceiver module may be a 100g QSFP28 SR4 optical transceiver module with an optical signal transmission rate of 100 Gbps. The first optical module 3 is exemplarily shown in fig. 1 to include M emission lenses 311 to 31M of emission channels and corresponding M lasers 321 to 32M (i.e., 321, 322, …, 32M), each of which includes one emission lens and a corresponding one of the lasers. It should be understood that the structure of the first optical module 3 shown in fig. 1 is only an example of an optical module, and other physical structures or electrical devices, such as functional circuits, interfaces, etc., are necessarily included in practical applications.
In application, the laser can be turned on or off under the control of a manual control or a control device by a user, and the laser emits an optical signal to a corresponding emission lens when turned on.
In application, the Optical Switch module may be composed of an Optical Switch (Optical Switch), an Optical splitter (Optical Power Slitter, OPS), and the like, and the Optical Switch module may include only one or more Optical switches, or may include one or more Optical switches and one or more Optical splitters, and may be selected according to actual needs, so long as the function of transmitting Optical signals transmitted through the transmitting lenses of the M transmitting channels of the first Optical module to the Optical power meter and the annular flux tester under the control of the control device, so as to detect the transmitting Optical power and the annular flux of at least one transmitting channel at the same time.
In application, the optical switch is an optical device with one or more selectable transmission ports, which is used to perform physical switching or logic operation on optical signals in an optical transmission line or an integrated optical circuit, and can selectively output part or all of optical signals transmitted through M transmission channels. The optical splitter is an optical fiber tandem device with at least one input end and a plurality of output ends, can split an optical signal output by the optical switch into at least two beams, and can select the optical splitter with proper splitting ratio according to actual needs.
In application, the control device may be any computing equipment with data processing and control functions, such as a tablet computer, a notebook computer, a personal computer, an industrial computer, etc., and is configured to control working states of other devices electrically connected to the computing equipment, obtain data output by the other devices, perform data processing, perform feedback control on working states of the other devices according to a data processing result, for example, control on/off of a transmission port of the optical switch, obtain emitted light power detected by the optical power meter and annular flux detected by the annular flux tester, and control on/off of the transmission port of the optical switch according to the emitted light power and annular flux feedback. The control device may include or be externally connected with input/output devices such as a display device, a keyboard, an audio acquisition/playing device, etc. to implement man-machine interaction with a user in the working process, for example, display or voice broadcast of emitted light power, annular flux, working states of the control device itself and other devices electrically connected with the control device, etc., and input a touch instruction of the user or acquire a voice instruction of the user.
In application, the electrical connection refers to a connection mode implemented through a conductive medium and used for transmitting electrical signals such as voltage signals, current signals, pulse signals and the like. Physical connection refers to a connection means for transmitting an optical signal or not transmitting any transmission signal, which is implemented by a non-conductive medium. In the first test process, the optical switch module is physically connected with the emitting lenses of the M emitting channels, the optical power meter and the annular flux tester based on the optical fiber interfaces and the optical fiber jumpers; the control device is electrically connected with the first optical module, the optical switch module, the optical power meter and the annular flux tester based on the communication interface and the cable, wherein the cable can be a serial bus (Inter-Integrated Circuit, IIC).
In application, based on the structure of the optical switch module shown in fig. 1, in the first test process, the control device can control the optical switch module to divide the optical signal transmitted through the transmitting lens of one transmitting channel into two beams each time and then transmit the two beams to the optical power meter and the annular flux tester respectively so as to detect the transmitting optical power and the annular flux of one transmitting channel; or the control device can also control the optical switch module to transmit one beam of optical signals transmitted through two emission channels to the optical power meter and the other beam to the annular flux tester each time so as to detect the emitted optical power of one emission channel and the annular flux of the other emission channel; the detection is carried out for M times, so that the emitted light power and the annular flux of M emitted channels can be obtained.
Based on the structure of the optical module test coupling system shown in fig. 1, when the optical module test coupling system is applied to the process of testing the transmitting optical power and the annular flux of the transmitting channels of the multimode optical module, the transmitting optical power and the annular flux of one transmitting channel can be detected simultaneously, or the transmitting optical power of one transmitting channel and the annular flux of the other transmitting channel can be detected simultaneously, so that the test efficiency can be effectively improved, and when the optical module test coupling system is applied to an unpackaged multimode optical module, the probability of reworking caused by poor indexes after the encapsulation of the multimode optical module is finished can be effectively reduced, and the production efficiency and the yield are improved.
As shown in fig. 3, based on the structure of the optical module test coupling system shown in fig. 1, in one embodiment, the optical switch module 1 includes a first optical switch 11 and a first optical splitter 12;
the controlled end of the first optical switch 11 is electrically connected with the control device 2, and the output end of the first optical switch 11 is physically connected with the input end of the first optical splitter 12;
in a first test procedure, the first optical switch 11 is configured to:
the M input ends of the first optical switch 11 are respectively and physically connected with the emitting lenses 311-31M of the M emitting channels in a one-to-one correspondence manner;
in a first test procedure, the first optical splitter 12 is configured to:
the first output end of the first optical splitter 12 is physically connected with one input end of the optical power meter 4, and the second output end of the first optical splitter 12 is physically connected with the input end of the annular flux tester 5;
in the first test procedure, the control device 2 is specifically configured to:
the laser is electrically connected with lasers 321-32M of M emission channels; and
the first optical module test coupling method is executed, and specifically comprises the following steps S200 to S202:
step 200, controlling the laser 32i of the ith emission channel to emit an optical signal;
step S201, the optical path between the ith input end and the output end of the first optical switch 11 is switched on, and the optical path between the remaining M-1 input ends and the output end of the first optical switch 11 is switched off, so that the optical signal transmitted through the emission lens 31i of the ith emission channel is split by the first optical splitter 12 and then is respectively transmitted to the optical power meter 4 and the annular flux tester 5;
Step S202, acquiring the emitted light power of the ith emitting channel detected by the light power meter 4 and the annular flux of the ith emitting channel detected by the annular flux tester 5;
where i=1, 2, …, M, step S201 is the refinement step of step S101, and step S202 is the refinement step of step S102.
In application, the first optical switch has M inputs and one output, and can selectively switch on the optical paths between one input and one output at a time and switch off the optical paths between the remaining M-1 inputs and the output under the control of the control device. The first optical splitter is a 1×2 optical splitter, and has an input end and two output ends, and is configured to split an optical signal input by the input end into two beams and output the two beams through the two output ends.
In application, based on the structure of the optical switch module shown in fig. 2, in the first test process, the control device needs to be electrically connected with the lasers of M emission channels, then controls the lasers of one emission channel (defined as a target emission channel) to emit optical signals each time, and switches on an optical path between a corresponding input end (i.e., an input end physically connected with an emission lens of the target emission channel) and an output end in the first optical switch, and switches off optical paths between the remaining M-1 input ends and the output end, so that the optical signals transmitted through the emission lens of the target emission channel are split by the first optical splitter and then are respectively transmitted to the optical power meter and the annular flux tester to detect the emitted optical power and the annular flux of the target emission channel; the detection is carried out for M times, so that the emitted light power and the annular flux of M emitted channels can be obtained.
Based on the structure of the optical module test coupling system shown in fig. 3, when the optical module test coupling system is applied to the process of carrying out the test of the emission optical power and the annular flux of the emission channels of the multimode optical module, the emission optical power and the annular flux of one emission channel can be detected at the same time, so that the test efficiency can be effectively improved, the control device can obtain the emission optical power and the annular flux of M emission channels only by carrying out M times of optical channel switching on the optical switch module based on the same optical channel switching logic, the logic calculation is simple and easy to realize, and when the optical module test coupling system is applied to the unpackaged multimode optical module, the probability that reworking is required due to poor indexes after the encapsulation of the multimode optical module is finished can be effectively reduced, so that the production efficiency and the yield are improved.
As shown in fig. 4, based on the structure of the optical module test coupling system shown in fig. 1, in one embodiment, the optical switch module 1 includes a second optical switch 13;
the controlled end of the second optical switch 13 is electrically connected with the control device 2;
during the first test, the second optical switch 13 is configured to:
the M input ends of the second optical switch 13 are respectively and correspondingly and physically connected with the emitting lenses 311-31M of the M emitting channels one by one, the first output end of the second optical switch 13 is physically connected with one input end of the optical power meter 4, and the second output end of the second optical switch 13 is physically connected with the input end of the annular flux tester 5;
In the first test procedure, the control device 2 is specifically configured to:
the laser is electrically connected with lasers 321-32M of M emission channels; and
the first optical module testing method is executed, and specifically comprises the following steps S300 to S302:
step S300, controlling lasers 32i and 32j of the ith emission channel and the jth emission channel to emit optical signals;
step S301, the optical path between the ith input end and the first output end of the second optical switch 13 and the optical path between the jth input end and the second output end are switched on, and the optical paths between the remaining M-2 input ends of the second optical switch 13 and the first output end and the second output end are switched off, so that the optical signal transmitted through the emission lens 31i of the ith emission channel is transmitted to the optical power meter 4, and the optical signal transmitted through the emission lens 31j of the jth emission channel is transmitted to the annular flux tester 5;
step S302, acquiring the emitted light power of the ith emitting channel detected by the light power meter 4 and the annular flux of the jth emitting channel detected by the annular flux tester 5;
where i=1, 2, …, M, j=1, 2, …, M, i+notej, m+.2, step S301 is the refinement step of step S101, and step S302 is the refinement step of step S102.
In application, the second optical switch has M input ends and two output ends, and can selectively switch on the optical paths corresponding to the two input ends and the two output ends one by one each time and switch off the optical paths between the remaining M-2 input ends and the two output ends under the control of the control device.
In application, based on the structure of the optical switch module shown in fig. 3, in the first test process, the control device needs to be electrically connected with the lasers of M emission channels, then controls the lasers of two emission channels (respectively defined as a first target emission channel and a second target emission channel) to emit optical signals each time, and turns on the optical paths corresponding to two input ends (namely, two input ends physically connected with the emission lenses of the first target emission channel and the second target emission channel) and two output ends in the first optical switch one by one, and cuts off the optical paths between the remaining M-2 input ends and the two output ends, so that the optical signals transmitted through the emission lenses of the first target emission channel are transmitted to the optical power meter, and the optical signals transmitted through the emission lenses of the second target emission channel are transmitted to the annular flux tester, so as to detect the emitted optical power of the first target emission channel and the annular flux of the second target emission channel; the detection is carried out for M times, so that the emitted light power and the annular flux of M emitted channels can be obtained.
Based on the structure of the optical module test coupling system shown in fig. 4, when the optical module test coupling system is applied to the process of carrying out the test of the emission optical power and the annular flux of the emission channels of the multimode multichannel optical module, the emission optical power of one emission channel and the annular flux of the other emission channel can be detected simultaneously each time, so that the test efficiency can be effectively improved, the control device can obtain the emission optical power and the annular flux of M emission channels only by carrying out M times of optical channel switching on the optical switch module based on the same optical channel switching logic, the logic calculation is simple and easy to realize, and when the optical module test coupling system is applied to the unpackaged multimode multichannel optical module, the probability of reworking caused by poor indexes after the encapsulation of the multimode multichannel optical module can be effectively reduced, so that the production efficiency and the yield are improved.
As shown in fig. 5, based on the structure of the optical module test coupling system shown in fig. 1, in one embodiment, the optical switch module 1 includes a third optical switch 14;
the third optical switch 14 is electrically connected with the control device 2;
during the first test, the third optical switch 14 is configured to:
the M input ends of the third optical switch 14 are respectively and physically connected with the emitting lenses 311-31M of the M emitting channels in a one-to-one correspondence manner, the 1 st to M output ends of the third optical switch 14 are respectively and physically connected with the 1 st to M input ends of the optical power meter 4 in a one-to-one correspondence manner, and the M+1 th output end of the third optical switch 14 is physically connected with the input end of the annular flux tester 5;
In the first test procedure, the control device 2 is configured to perform a first optical module test method, which specifically comprises the following steps S401 and S402:
step S401, the optical path between the ith input end and the M+1th output end of the third optical switch 14 and the optical path between the remaining M-1 input ends and the corresponding M-1 output ends are turned on, so that the optical signals transmitted through the emission lens 31i of the ith emission channel are transmitted to the annular flux tester 5, and the optical signals transmitted through the emission lenses of the remaining M-1 emission channels are transmitted to the M-1 input ends of the optical power meter 4 in a one-to-one correspondence;
step S402, obtaining the annular flux of the ith emission channel detected by the annular flux tester 5 and the emitted light power of the remaining M-1 emission channels detected by the light power meter 4;
wherein i=1, 2, …, M is not less than 2, step S401 is a refinement step of step S101, and step S402 is a refinement step of step S102.
In application, the third optical switch has M inputs and M+1 outputs, and can selectively switch on the optical path between one of the inputs and the M+1th output at a time and the optical path between the remaining M-1 inputs and the corresponding M-1 outputs under the control of the control device.
In application, based on the structure of the optical switch module shown in fig. 4, in the first test process, the control device may be electrically connected with the lasers of M emission channels, and then control the lasers of M emission channels to emit optical signals, or the control device may not be electrically connected with the lasers of M emission channels, and the lasers of M emission channels are manually controlled by a user to emit optical signals, where the control device selectively switches on the optical path between one input end (defined as a target input end) and the (m+1) th output end of the third optical switch each time, and the optical path between the remaining (M-1) input ends and the corresponding (M-1) th output ends, so that the optical signals transmitted through the emission lenses of the target emission channels (i.e., the emission channels physically connected with the target input ends) are transmitted to the annular flux tester, and the optical signals transmitted through the emission lenses of the remaining (M-1) emission channels are transmitted to the (M-1) input ends of the optical power meter one by one to detect the annular flux of the target emission channels and the emission optical power of the remaining (M-1) emission channels; the emitted light power and the annular flux of M emitting channels can be obtained by carrying out M times of detection; wherein each emission channel is tested for M-1 times of emitted light power and one time of annular flux.
Based on the structure of the optical module test coupling system shown in fig. 5, when the optical module test coupling system is applied to the process of carrying out the test of the emission optical power and the annular flux of the emission channels of the multimode multichannel optical module, the annular flux of one emission channel and the emission optical power of the rest emission channels of the multimode multichannel optical module can be detected at the same time, so that the test efficiency can be effectively improved, the control device can obtain the emission optical power and the annular flux of M emission channels only by carrying out M times of optical channel switching on the optical switch module based on the same optical channel switching logic, the logic calculation is simple and easy to realize, and when the optical module test coupling system is applied to the unpackaged multimode multichannel optical module, the probability that reworking is required due to poor indexes can be effectively reduced after the encapsulation of the multimode multichannel optical module is finished, so that the production efficiency and the yield are improved.
As shown in fig. 6, based on the structure of the optical module test coupling system shown in fig. 1, in one embodiment, the optical switch module 1 includes a fourth optical switch 15 and a second optical splitter 16;
the fourth optical switch 15 is electrically connected with the control device 2, and the (M+1) th output end of the fourth optical switch 15 is physically connected with the input end of the second optical splitter 16;
During the first test, the fourth optical switch 15 is configured to:
the M input ends of the fourth optical switch 15 are respectively and physically connected with the emitting lenses 311-31M of the M emitting channels in a one-to-one correspondence manner, and the 1 st to M output ends of the fourth optical switch 15 are respectively and physically connected with the 1 st to M input ends of the optical power meter 4 in a one-to-one correspondence manner;
during the first test, the second optical splitter 16 is configured to:
the first output end of the second optical splitter 16 is physically connected with the (M+1) th input end of the optical power meter 4, and the second output end of the second optical splitter 16 is physically connected with the input end of the annular flux tester 5;
in the first test procedure, the control device 2 is configured to perform a first optical module test method, which specifically comprises the following steps S501 and S502:
step S501, the optical path between the ith input end and the M+1 th output end of the fourth optical switch 15 and the optical path between the remaining M-1 th input end and the corresponding M-1 th output end are turned on, so that the optical signals transmitted through the emission lens 31i of the ith emission channel are respectively transmitted to the M+1 th input end of the optical power meter 4 and the annular flux tester 5 after being split by the second optical splitter 16, and the optical signals transmitted through the emission lenses of the remaining M-1 emission channels are respectively transmitted to the M-1 input ends of the optical power meter 4 in a one-to-one correspondence;
Step S502, obtaining the emitted light power of M emitted channels detected by the light power meter 4 and the annular flux of the ith emitted channel detected by the annular flux tester 5;
wherein i=1, 2, …, M is equal to or greater than 2, step S501 is a refinement step of step S101, and step S502 is a refinement step of step S102.
In application, the fourth optical switch has M input terminals and M+1 output terminals, and can selectively switch on the optical path between one input terminal and M+1th output terminal at a time and the optical path between the remaining M-1 input terminals and the corresponding M-1 output terminals under the control of the control device. The second optical splitter is a 1×2 optical splitter, and has an input end and two output ends, and is configured to split an optical signal input by the input end into two beams and output the two beams through the two output ends.
In application, based on the structure of the optical switch module shown in fig. 5, in the first test process, the control device may be electrically connected with the lasers of the M emission channels, and then control the lasers of the M emission channels to emit optical signals, or the control device may not be electrically connected with the lasers of the M emission channels, and the lasers of the M emission channels are manually controlled by a user to emit optical signals, where the control device selectively switches on an optical path between one input end (defined as a target input end) and the (m+1) th output end of the fourth optical switch each time, and an optical path between the remaining (M-1) input ends and the corresponding (M-1) th output ends, so that the optical signals transmitted through the emission lenses of the target emission channels (i.e., the emission channels physically connected with the target input ends) are split by the second optical splitter and then respectively transmitted to the (m+1) th input end of the optical power meter and the annular flux tester, and the optical signals transmitted through the emission lenses of the remaining (M-1) emission channels are one-to-1 input ends of the optical power meter, so as to detect the optical fluxes of the target emission channels and the remaining optical fluxes of the optical channels and the remaining optical fluxes of the M-1 emission channels; the emitted light power and the annular flux of M emitting channels can be obtained by carrying out M times of detection; wherein each emission channel is detected M times with an emitted light power and a primary annular flux.
Based on the structure of the optical module test coupling system shown in fig. 6, when the optical module test coupling system is applied to the process of carrying out the test of the emitted light power and the annular flux on the emitting channels of the multimode multichannel optical module, the annular flux of one emitting channel and the emitted light power of the remaining emitting channels of the optical module can be detected at the same time, so that the test efficiency can be effectively improved, the control device can obtain the emitted light power and the annular flux of M emitting channels only by carrying out the optical channel switching on the optical switch module based on the same optical channel switching logic.
As shown in FIG. 7, in one embodiment, M.gtoreq.2, the first optical module 3 is not packaged, and the emission lenses 311-31M of M emission channels are integrally arranged;
based on the structure of the optical module test coupling system shown in fig. 1 and the first test procedure, in the first coupling debugging procedure, the control device 2 is further configured to:
Is electrically connected with the displacement system 6; and
the first optical module coupling debugging method is executed, as shown in fig. 8, and the method further includes the following steps S601 and S602 on the basis of the first optical module testing method:
step S601, controlling a displacement system 6 to adjust the positions of the emitting lenses 311-31M of the M emitting channels relative to the lasers 321-32M according to the emitting light power of the 1 st emitting channel and the M emitting channel respectively so as to maximize the emitting light power of the 1 st emitting channel and the M emitting channel;
step S602, under the condition that the emission light power of the 1 st emission channel and the M th emission channel is the largest, if the emission light power of the rest emission channels is qualified, outputting a coupling debugging result representing that the emission light power of the M emission channels is qualified; otherwise, outputting a coupling debugging result representing that the emission light power of the remaining emission channels is unqualified.
In application, the displacement system is a three-dimensional displacement system, and the emission lenses of all emission channels of the first optical module can be integrally moved in a three-dimensional space under the control of the control device.
In application, under the condition that the emission lenses of the M emission channels are integrally arranged, in order to realize the rapid alignment between the M emission lenses and the corresponding M lasers, in theory, only the positions of the emission lenses of the M emission channels relative to the lasers are controlled by a displacement system according to the emission light power of the 1 st emission channel and the emission light power of the M emission channel respectively, so that the emission light power of the 1 st emission channel and the emission light power of the M emission channel are the maximum, and the emission light power of the M emission channels can meet the design requirement of a multimode multichannel optical module protocol. Under the condition that the emission light power of the 1 st emission channel and the M th emission channel is the largest, if the emission light power of the rest emission channels is qualified, outputting a coupling debugging result representing that the emission light power of the M emission channels is qualified (namely, meets the design requirement of a multimode multichannel optical module protocol); otherwise, outputting a coupling debugging result indicating that the emission light power of the remaining emission channels is unqualified, which indicates that the first optical module may have problems such as material dirt or damage, poor front-end technology (for example, poor gold wire bonding technology in the Chip On Board (COB) process is not detected in time), poor coupling (for example, poor optical fiber or poor connection in test), and the like.
In the application, the coupling debugging result can be output in any output mode supported by the control device according to actual needs, for example, the coupling debugging result is displayed in the form of characters, graphics, images or charts, or is broadcasted in a voice mode.
Based on the structure of the optical module test coupling system shown in fig. 7, when the optical module test coupling system is applied to the process of coupling debugging on the emission channels of the unpackaged multimode multichannel optical module, the probability of reworking caused by poor indexes after the encapsulation of the multimode multichannel optical module is finished can be effectively reduced, so that the production efficiency and the yield are improved, and the positions of the emission lenses of all the emission channels relative to the lasers are controlled by the displacement system only according to the emission light power of the two emission channels respectively, so that the emission light power of all the emission channels meets the design requirement of a multimode multichannel optical module protocol, and the coupling debugging efficiency is high.
As shown in fig. 9 and 10, based on the structure of the optical module test coupling system shown in fig. 7, in the first coupling debugging process, the first optical module coupling debugging method executed by the control device specifically includes steps S701 to S706 as follows:
step S701, according to the emitted light power of the 1 st emitted channel, controlling the displacement system to translate the emitting lenses 311-31M of M emitted channels under the first coordinate system XYZ to obtain the emitted light power of the 1 st emitted channel The first position (X 1 ,Y 1 ,Z 1 ) And first initial positions (X) of the emission lenses 311 to 31M of the M emission channels 01 ,Y 01 ,Z 1 )。
In application, the first coordinate system is a cartesian coordinate system with the Z-axis direction parallel to the main optical axis of the emission lens of the M emission channels, and may specifically be a displacement system coordinate system with the origin of the displacement system as the origin of coordinates. The control device may control the displacement system to wholly translate the emission lenses of all emission channels of the first optical module along the X-axis, Y-axis or Z-axis direction in the first coordinate system according to the first preset path, obtain and record the emission light power of the 1 st emission channel at each different position on the first preset path through the light power meter in the moving process until the recorded sample number of the emission light power of the 1 st emission channel at each different position reaches the first preset sample number, or the recorded 1 st emission channel does not generate new maximum emission light power in the emission light power of each different position, generate a first position-emission light power meter or a first position-emission light power curve capable of reflecting the corresponding relation between the position of the 1 st emission channel and the emission light power based on the recorded emission light power of the 1 st emission channel at different positions, and then determine the initial position of the first emission lens of the 1 st emission channel when the emission light power of the 1 st emission channel is maximum based on the first position-emission light power meter or the first position-emission light power curve.
In the light gray first light module shown in fig. 9, the position of the emission lens 311 is the first position (X 1 ,Y 1 ,Z 1 )。
Step S702, according to the emitted light power of the Mth emission channel, controlling the displacement system to translate or rotate the emission lenses 311-31M of the Mth emission channel in the XY coordinate plane of the first coordinate system XYZ, and obtaining the second position (X 2 ,Y 2 ,Z 1 )。
In application, the control device can control the displacement system to integrally translate the emission lenses of all emission channels of the first optical module on the XY coordinate plane of the first coordinate system according to the second preset path, and acquire and record the emission light power of the Mth emission channel at each different position of the second preset path through the optical power meter in the translation process until the recorded sample number of the emission light power of the Mth emission channel at each different position reaches the second preset sample number or the recorded Mth emission channel no longer generates new maximum emission light power in the emission light power of each different position; or the control device can control the displacement system to rotate the emission lenses of all emission channels of the first optical module within the preset angle range of the XY coordinate plane of the first coordinate system, and obtain and record the emission light power of the Mth emission channel at the corresponding position of each different angle through the optical power meter in the rotation process; generating a second position-emitting light power meter or a second position-emitting light power curve capable of reflecting the corresponding relation between the position of the Mth emitting channel and the emitting light power based on the recorded emitting light power of the Mth emitting channel at different positions, and then determining the second position of the emitting lens of the Mth emitting channel when the emitting light power of the Mth emitting channel is maximum based on the second position-emitting light power meter or the second position-emitting light power curve.
In the dark gray first light module shown in fig. 9, the position of the emission lens 31M is the second position (X 2 ,Y 2 ,Z 1 )。
Step S703, according to the trigonometric function, the first position (X 1 ,Y 1 ,Z 1 ) And a second position (X 2 ,Y 2 ,Z 1 ) Acquiring a first included angle theta of the emitting lenses 311-31M of M emitting channels relative to the XY coordinate plane of the lasers 321-32M in a first coordinate system XYZ 1 。
In application, when the trigonometric function is a tangent trigonometric function, the first included angle θ 1 The calculation formula of (2) is as follows:
Figure BDA0004003780670000121
when the trigonometric function is a cotangent trigonometric function, the first included angle theta 1 The calculation formula of (2) is as follows:
Figure BDA0004003780670000122
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when the trigonometric function is a sine trigonometric function, the first included angle theta 1 The calculation formula of (2) is as follows:
Figure BDA0004003780670000123
when the trigonometric function is a cosine trigonometric function, the first included angle theta 1 The calculation formula of (2) is as follows:
Figure BDA0004003780670000124
wherein D is 1 The distance between two adjacent emission channels is expressed.
Step S704, controlling the displacement system to translate the emission lenses 311-31M of the M emission channels to a first initial position (X) on the XY coordinate plane of the first coordinate system XYZ 01 ,Y 01 ,Z 1 ) And in a first position (X 1 ,Y 1 ,Z 1 ) Rotating the emitting lenses of the M emitting channels 311-31M by a first included angle theta for the rotation center 1 So as to maximize the emitted light power of the 1 st emission channel and the M-th emission channel.
In application, when the emission lenses of the M emission channels are translated to the first initial position, the 1 st emission lens is located at the first position, and the emission lenses of all emission channels are rotated by a first included angle by taking the first position as a rotation center, so that the emission lenses of the M emission channels are located at the second position under the condition that the 1 st emission lens is located at the first position, and at the moment, the emission light power of the 1 st emission channel and the M emission channel at the current Z-axis coordinate position is the maximum.
In the black first optical module shown in fig. 9, the positions of the 1 st emission lens 311 and the mth emission lens 31M are the positions when the emitted optical powers of both at the current Z-axis coordinate position are the maximum.
Step S705, controlling the displacement system to translate the emission lenses 311-31M of the M emission channels along the Z-axis direction parallel to the first coordinate system XYZ, and obtaining the third position (X 3 ,Y 3 ,Z 2 )。
In application, under the condition that the emission light power of the 1 st emission channel and the M th emission channel at the current Z-axis coordinate position is the largest, the emission lenses of all emission channels are continuously shifted in the Z-axis direction, the emission light power of each different position of the M th emission channel in the Z-axis direction is obtained and recorded through an optical power meter in the moving process, until the recorded sample number of the emission light power of the M th emission channel at each different position reaches the third preset sample number, or the recorded emission light power of the M th emission channel at each different position does not appear new maximum emission light power any more, a third position-emission light power table or a third position-emission light power curve capable of reflecting the corresponding relation between the position of the M th emission channel and the emission light power is generated based on the recorded emission light power of the M th emission channel at different positions, and then the third position of the M th emission lens at the maximum emission light power of the M th emission channel is determined based on the third position-emission light power table or the third position-emission light power curve.
Step S706, the displacement system is controlled to translate the emission lens 31M of the M-th emission channel to a third position (X 3 ,Y 3 ,Z 2 )。
In application, step S701 to step S706 are refinement steps of step S601, and since all emission lenses are integrally disposed, translating the emission lenses of the mth emission channel to the third position is translating all emission lenses to the Z-axis coordinate position of the third position along the Z-axis direction, and at this time, the emitted light power of all emission channels theoretically meets the design requirement of the multimode multichannel optical module.
In one embodiment, the control device is further configured to perform the following steps in performing the first optical module testing method and the first optical module coupling commissioning method:
and compensating the emitted light power of each emitted channel detected by the optical power meter according to the insertion loss of the optical switch module.
In application, since the insertion loss exists in the connection interface between the optical switch module and each transmitting channel, the transmitting optical power of each transmitting channel detected by the optical power meter is compensated according to the insertion loss, and the transmitting optical power of each transmitting channel after compensation is equal to the sum of the transmitting optical power of each transmitting channel detected by the optical power meter and the insertion loss.
Based on the first optical module coupling debugging method shown in fig. 10, when the optical module test coupling system is applied to the process of coupling debugging of the emission channels of the unpackaged multimode multichannel optical module, the displacement system is controlled to adjust the positions of the emission lenses of all the emission channels relative to the lasers only according to the emission light power of the two emission channels at the two ends of the optical module, so that the light power of all the emission channels meets the design requirement of the multimode multichannel optical module protocol, and the coupling debugging efficiency is high.
As shown in fig. 11, based on the structure of the optical module test coupling system shown in fig. 7, in the first coupling debugging process, the first optical module coupling debugging method executed by the control device further includes the following steps S801 and S802:
step S801, under the condition that the emitted light power of the M emitting channels is qualified, controlling a displacement system to adjust the positions of emitting lenses of the M emitting channels relative to a laser according to the annular fluxes of the 1 st emitting channel and the M emitting channel so as to maximize the annular fluxes of the 1 st emitting channel and the M emitting channel;
step S802, under the condition that the annular flux of the 1 st emission channel and the M th emission channel is maximum, if the annular flux of the rest emission channels is qualified, outputting a coupling debugging result representing that the annular flux of the M emission channels is qualified; otherwise, outputting a coupling debugging result which represents disqualification of annular flux of the residual transmitting channels.
In application, under the condition that the annular fluxes of the M emission channels are qualified, the coupling precision between the M emission lenses and the M lasers corresponding to the M emission channels is further improved, based on the same principle as that of the embodiment corresponding to fig. 6 and 7, the displacement system is controlled to adjust the positions of the emission lenses of the M emission channels relative to the lasers according to the annular fluxes of the 1 st emission channel and the M emission channel respectively, so that the annular fluxes of the 1 st emission channel and the M emission channel are maximized, and the optical power of the M emission channels can meet the design requirement of a multimode multichannel optical module protocol. Under the condition that the annular flux of the 1 st emission channel and the M th emission channel is maximum, if the annular fluxes of the remaining emission channels are all qualified, outputting a coupling debugging result representing that the annular fluxes of the M emission channels are qualified (namely, the design requirement of a multimode multichannel optical module protocol is met); otherwise, outputting a coupling debugging result representing disqualification of annular flux of the remaining emission channels, which indicates that the first optical module may have problems of material dirt or damage, poor preamble process, poor coupling and the like.
Based on the first optical module coupling debugging method shown in fig. 11, under the condition that the emitted light power of all the emitting channels of the multimode multichannel optical module is qualified, further, the displacement system is controlled to adjust the positions of the emitting lenses of all the emitting channels relative to the lasers according to the annular fluxes of the two emitting channels respectively, so that the annular fluxes of all the emitting channels meet the design requirement of the multimode multichannel optical module protocol, the coupling precision can be further improved, and the coupling debugging efficiency is high.
As shown in fig. 12, based on the structure of the optical module test coupling system shown in fig. 7, in the first coupling debugging process, the first optical module coupling debugging method executed by the control device specifically includes the following steps S901 to S906:
step S901, in case of qualified emission light power of M emission channelsUnder the control of the displacement system, the emission lenses of M emission channels are shifted under the first coordinate system according to the annular flux of the 1 st emission channel, and the fourth position (X 4 ,Y 4 ,Z 3 ) And a second initial position (X 02 ,Y 02 ,Z 3 )。
In application, under the condition that the annular flux of all the emission channels is qualified, the control device can further control the displacement system to integrally translate the emission lenses of all the emission channels of the first optical module along the X-axis, Y-axis or Z-axis direction under the first coordinate system according to the third preset path, obtain and record the annular flux of the 1 st emission channel at each different position on the first preset path through the annular flux tester in the moving process until the recorded sample number of the annular flux of the 1 st emission channel at each different position reaches the fourth preset sample number or the recorded annular flux of the 1 st emission channel at each different position no longer appears a new maximum annular flux, generate a fourth position-annular flux meter or a fourth position-annular flux curve capable of reflecting the corresponding relation between the position of the 1 st emission channel and the annular flux based on the recorded annular flux of the 1 st emission channel at different positions, and then determine the initial position of the emission lenses of the 1 st emission channel at the fourth position of the fourth emission channel based on the fourth position-annular flux meter or the fourth position-annular flux curve.
Step S902, according to the annular flux of the Mth emission channel, controlling the displacement system to translate or rotate the emission lens of the Mth emission channel on the XY coordinate plane of the first coordinate system, and obtaining the fifth position (X 5 ,Y 5 ,Z 3 )。
In application, the control device can control the displacement system to integrally translate the emission lenses of all emission channels of the first optical module on an XY coordinate plane of the first coordinate system according to a fourth preset path, and acquire and record annular flux of an Mth emission channel at each different position of the fourth preset path through an annular flux tester in the translation process until the recorded sample number of the annular flux of the Mth emission channel at each different position reaches a fifth preset sample number or the recorded annular flux of the Mth emission channel at each different position does not generate new maximum annular flux any more; or the control device can control the displacement system to rotate the emission lenses of all emission channels of the first optical module within the preset angle range of the XY coordinate plane of the first coordinate system, and acquire and record the annular flux of the Mth emission channel at the corresponding position of each different angle through the annular flux tester in the rotation process; generating a fifth position-annular flux table or a fifth position-annular flux curve capable of reflecting the corresponding relation between the position of the Mth emission channel and the annular flux based on the recorded annular fluxes of the Mth emission channel at different positions, and then determining the fifth position of the emission lens of the Mth emission channel when the annular flux of the Mth emission channel is maximum based on the fifth position-annular flux table or the fifth position-annular flux curve.
Step S903, according to the trigonometric function, the fourth position (X 4 ,Y 4 ,Z 3 ) And a fifth position (X 5 ,Y 5 ,Z 3 ) Acquiring second included angles theta of the emitting lenses of the M emitting channels relative to the XY coordinate plane of the laser in the first coordinate system 1 。
In application, when the trigonometric function is a tangent trigonometric function, the first included angle θ 2 The calculation formula of (2) is as follows:
Figure BDA0004003780670000141
when the trigonometric function is a cotangent trigonometric function, the first included angle theta 2 The calculation formula of (2) is as follows:
Figure BDA0004003780670000142
when the trigonometric function is a sine trigonometric function, the first included angle theta 2 The calculation formula of (2) is as follows:
Figure BDA0004003780670000143
when the trigonometric function is a cosine trigonometric function, the first included angle theta 2 The calculation formula of (2) is as follows:
Figure BDA0004003780670000144
wherein D represents the distance between two adjacent emission channels.
And step S904, controlling a displacement system to translate the emitting lenses of the M emitting channels to a second initial position on an XY coordinate plane of the first coordinate system, and rotating the emitting lenses of the M emitting channels by a second included angle by taking a fourth position as a rotation center so as to maximize annular flux of the 1 st emitting channel and the M th emitting channel.
In application, when the emission lenses of the M emission channels are translated to the second initial position, the 1 st emission lens is positioned at the fourth position, and the emission lenses of all emission channels are rotated by a second included angle by taking the fourth position as a rotation center, so that the emission lenses of the M emission channels are positioned at the fifth position under the condition that the 1 st emission lens is positioned at the fourth position, and annular fluxes of the 1 st emission channel and the M emission channel at the current Z-axis coordinate position are both maximum.
Step S905, controlling the displacement system to translate the emission lenses of the M emission channels along the Z-axis direction parallel to the first coordinate system, and obtaining the sixth position (X 6 ,Y 6 ,Z 4 )。
In application, under the condition that annular fluxes of the 1 st emission channel and the M th emission channel are the largest in the current Z-axis coordinate position, the emission lenses of all emission channels are continuously translated in the Z-axis direction, annular fluxes of the M th emission channel at different positions in the Z-axis direction are obtained and recorded through an annular flux tester in the moving process, until the number of samples of the annular fluxes of the M th emission channel at different positions recorded reaches the sixth preset number of samples, or the maximum annular flux of the M th emission channel no longer appears in the annular fluxes of the M th emission channel at different positions recorded, a sixth position-annular flux table or a sixth position-annular flux curve capable of representing the corresponding relation between the positions of the M th emission channel and the annular fluxes is generated based on the annular fluxes of the M th emission channel at different positions, and then the sixth position of the M th emission lens of the M th emission channel at the maximum annular flux of the M th emission channel is determined based on the sixth position-annular flux table or the sixth position-annular flux curve.
Step S906, controlling the displacement system to translate the emission lens 31M of the M-th emission channel to a sixth position (X 6 ,Y 6 ,Z 4 )。
In application, step S901 to step S906 are refinement steps of step S801, and because all emission lenses are integrally arranged, translating the emission lenses of the mth emission channel to the sixth position is integrally translating all emission lenses to the Z-axis coordinate position of the sixth position along the Z-axis direction, and at this time, the annular fluxes of all emission channels theoretically meet the design requirement of the multimode multichannel optical module.
It should be understood that the optical module test coupling system in the embodiments corresponding to fig. 1 to 12 may also be used for performing transmit optical power and annular flux test and coupling debugging on other multimode optical modules with the total number of transmit channels being M, where M < M, only needs to consider the equivalent of M in the embodiments corresponding to fig. 1 to 12 as M, and the m+1st to M input ends of the optical switch module and the optical power meter are idle.
Based on the first optical module coupling debugging method shown in fig. 12, under the condition that the emitted light power of all the emitting channels of the multimode multichannel optical module is qualified, the displacement system is controlled to adjust the positions of the emitting lenses of all the emitting channels relative to the lasers only according to the annular fluxes of the two emitting channels at the two ends of the optical module, so that the annular fluxes of all the emitting channels meet the design requirement of the multimode multichannel optical module protocol, the coupling precision can be further improved, and the coupling debugging efficiency is high.
As shown in fig. 13, the connection relationship between the control device 2 and the external device is exemplarily shown in the second test process of performing the optical power test on the receiving channel of the second optical module 7;
the control device 2 is configured to:
is electrically connected with a built-in register 74 of the second optical module 7; and
a second optical module test method is performed, as shown in fig. 14, the method comprising the following steps S1001 and S1002:
step S1001, acquiring the reception parameters of the N reception channels of the second optical module 7 from the built-in register 74;
step S1002, obtaining receiving indexes of N receiving channels according to receiving parameters;
the receiving parameter includes at least one of the N receiving channel's forward emitter coupling logic level and the receiving signal intensity, the receiving index includes at least one of the receiving optical power and the receiving sensitivity, the optical signal emitted by the light source device 8 is transmitted to the corresponding receiving channel's photo detectors 721-72N (i.e. 721, 722, …, 72N) through the receiving lenses 711-71N (i.e. 711, 712, …, 71N) of the N receiving channels, amplified by the corresponding pre-amplifiers 731-73N (i.e. 731, 732, …, 73N) respectively, and stored in the built-in register 74, or the forward emitter coupling logic level is processed as the receiving signal intensity and stored in the built-in register 74.
In the application, N is the total number of the receiving channels of the second optical module, and N is less than or equal to M. The second optical module may be a single-mode single-channel optical receiving module, a single-mode single-channel optical transceiver module, a multimode multi-channel optical receiving module or a multimode multi-channel optical transceiver module, where the multimode multi-channel optical transceiver module may be a 100g QSFP28 SR4 optical transceiver module with an optical signal transmission rate of 100 Gbps. The second optical module 7 is exemplarily shown in fig. 13 to include N receiving lenses 711 to 71N of receiving channels, corresponding N photodetectors 721 to 72N, and corresponding N preamplifiers 731 to 73N. It should be understood that the structure of the second optical module 7 shown in fig. 13 is only an example of an optical module, and other physical structures or electrical devices, such as functional circuits, interfaces, etc., are necessarily included in practical applications.
In application, the light source device can be turned on or off under the control of the manual control or the control device of the user, and the light source device emits light signals to the corresponding receiving lenses when turned on. The light source device may be a steady-state light source, for example, a steady-state semiconductor Laser (LD), and in particular, when the second optical module is a multimode receiving module or a multimode transceiver module, the light source device may be a vertical cavity surface emitting Laser with an operating wavelength of 850 nm.
In application, since the optical power is not required to be detected by the optical power meter and the annular flux is not required to be detected by the annular flux tester in the second test process, the optical switch module, the optical power meter and the annular flux tester are not required to be used, and can be closed under the control of manual control of a user or a control device, and the control device only needs to acquire the receiving parameters of N receiving channels of the second optical module from the built-in register and process the receiving parameters as receiving indexes. Under the condition that the optical module test coupling system only comprises an optical switch module and a control device, the optical switch module is idle; in the case that the optical module test coupling system comprises an optical switch module, a control device, an optical power meter and a ring-shaped flux tester, the optical switch module, the optical power meter and the ring-shaped flux tester are idle.
In application, the control device is electrically connected with the second optical module and the light source device based on the communication interface and the cable, wherein the cable can be a serial bus. In application, when n=m, the first optical module in the embodiment corresponding to fig. 1 to 12 and the second optical module in the embodiment corresponding to fig. 13 may be the same multimode optical transceiver module, and in the second test process, the connection relationship between the optical switch module, the optical power meter, the annular flux tester, the first optical module and the control device may be kept unchanged.
Based on the structure of the optical module test coupling system shown in fig. 13, the optical module test coupling system can be applied to a second test process after the first test process or the first coupling debugging process is completed, and when the first optical module and the second optical module are the same multimode optical transceiver module, only the control device is required to be electrically connected with the built-in register of the first optical module, the connection relationship between the optical module test coupling system and other devices is not required to be changed, so that the wiring process can be simplified, and the test efficiency is improved.
As shown in FIG. 15, in one embodiment, N.gtoreq.2, the second optical module 7 is not packaged, and the receiving lenses 711 to 71N of the N receiving channels are integrally arranged;
based on the structure of the optical module test coupling system and the second test procedure shown in fig. 13, in the second coupling debugging procedure, the control device 2 is further configured to:
is electrically connected with the displacement system 6; and
the second optical module coupling debugging method is executed, as shown in fig. 16, and the method further includes the following steps S1101 and S1102 on the basis of the second optical module testing method:
s1101, controlling a displacement system 6 to adjust the positions of receiving lenses 711-71N of the N receiving channels relative to the optical detector according to the receiving indexes of the 1 st receiving channel and the N receiving channel respectively so as to maximize the receiving indexes of the 1 st receiving channel and the N receiving channel;
S1102, under the condition that the receiving indexes of the 1 st receiving channel and the N th receiving channel are maximum, if the receiving indexes of the rest receiving channels are qualified, outputting a coupling debugging result representing that the receiving indexes of the N receiving channels are qualified; otherwise, outputting a coupling debugging result which represents that the receiving index of the residual receiving channels is unqualified.
In application, the displacement system can move the receiving lenses of all receiving channels of the second optical module in three dimensions as a whole under the control of the control device.
In application, in order to realize rapid alignment between N receiving lenses and corresponding N optical detectors under the condition that receiving lenses of N receiving channels are integrally arranged, theoretically, only the positions of the receiving lenses of the N receiving channels relative to the optical detectors need to be controlled by a displacement system according to the receiving indexes of the 1 st receiving channel and the N receiving channel respectively, so that the receiving indexes of the 1 st receiving channel and the N receiving channel are maximum, and the optical power of the N receiving channels can meet the design requirement of a multimode multichannel optical module protocol. Under the condition that the receiving indexes of the 1 st receiving channel and the N th receiving channel are the largest, if the receiving indexes of the rest receiving channels are all qualified, outputting a coupling debugging result representing that the receiving indexes of the N receiving channels are qualified (namely, the receiving indexes meet the design requirement of a multi-channel optical module protocol); otherwise, outputting a coupling debugging result indicating that the receiving index of the remaining receiving channels is unqualified, which indicates that the second optical module may have problems of material dirt or damage, poor preamble process (for example, poor gold wire bonding process in the chip-on-board packaging process is not detected in time), poor coupling (for example, poor optical fiber or poor connection in test), and the like.
In the application, the coupling debugging result can be output in any output mode supported by the control device according to actual needs, for example, the coupling debugging result is displayed in the form of characters, graphics, images or charts, or is broadcasted in a voice mode.
Based on the structure of the optical module test coupling system shown in fig. 15, when the optical module test coupling system is applied to the process of coupling debugging on the receiving channels of the unpackaged multi-channel optical module, the probability of reworking caused by poor indexes after the multi-channel optical module is packaged can be effectively reduced, so that the production efficiency and the yield are improved, and the displacement system is controlled to adjust the positions of the receiving lenses of all the receiving channels relative to the optical detector only according to the receiving indexes of the two receiving channels respectively, so that the receiving indexes of all the receiving channels meet the design requirements of a multi-channel optical module protocol, and the coupling debugging efficiency is high.
As shown in fig. 17, based on the structure of the optical module test coupling system shown in fig. 15, in the second coupling debugging process, the second optical module coupling debugging method executed by the control device specifically includes steps S1201 to S1206 as follows:
s1201, according to the receiving index of the 1 st receiving channel, controlling the displacement system to translate the receiving lenses of the N receiving channels under the second coordinate system X ' Y ' Z ', and obtaining the seventh position (X ' of the receiving lens of the 1 st receiving channel when the receiving index of the 1 st receiving channel is maximum ' 7 ,Y’ 7 ,Z’ 7 ) And a third initial position (X 'of the receiving lenses of the N receiving channels' 03 ,Y’ 03 ,Z’ 7 )。
In application, the second coordinate system is a cartesian coordinate system with the Z' axis direction parallel to the main optical axis of the receiving lens of the N receiving channels, and specifically may be a displacement system coordinate system with the origin of the displacement system as the origin of coordinates, that is, the first coordinate system and the second coordinate system may be the same coordinate system. The control device may control the displacement system to translate the receiving lenses of all the receiving channels of the second optical module along the X ' axis, the Y ' axis or the Z ' axis in the second coordinate system according to the fifth preset path, obtain and record the receiving index of the 1 st receiving channel at each different position on the fifth preset path through the optical power meter during the movement process until the number of samples of the recorded receiving index of the 1 st receiving channel at each different position reaches the seventh preset number of samples, or until the recorded receiving index of the 1 st receiving channel at each different position no longer appears a new maximum receiving index, generate a first position-receiving index table or a first position-receiving index curve capable of reflecting the correspondence between the position of the 1 st receiving channel and the receiving index based on the recorded receiving index of the 1 st receiving channel at different positions, and then determine the initial position of the receiving lens of the seventh receiving channel and the third receiving channel based on the first position-receiving index table or the first position-receiving index curve.
S1202, controlling the displacement system to translate or rotate the receiving lenses of the N receiving channels in the X ' Y ' coordinate plane of the second coordinate system X ' Y ' Z ' according to the receiving index of the N receiving channels to obtainTaking the eighth position (X 'of the receiving lens of the Nth receiving channel when the receiving index of the Nth receiving channel is maximum' 8 ,Y’ 8 ,Z’ 7 )。
In application, the control device can control the displacement system to integrally translate the receiving lenses of all the receiving channels of the first optical module on the X 'Y' coordinate plane of the second coordinate system according to the sixth preset path, and acquire and record the receiving indexes of the Nth receiving channel at each different position of the sixth preset path through the optical power meter in the translation process until the number of samples of the recorded receiving indexes of the Nth receiving channel at each different position reaches the eighth preset number of samples or the recorded receiving indexes of the Nth receiving channel at each different position no longer show new maximum receiving indexes; or the control device can control the displacement system to rotate the receiving lenses of all the receiving channels of the first optical module within the preset angle range of the XY coordinate plane of the first coordinate system, and obtain and record the receiving index of the Nth receiving channel at the corresponding position of each different angle through the optical power meter in the rotation process; generating a second position-receiving index table or a second position-receiving index curve capable of reflecting the corresponding relation between the position of the Nth receiving channel and the receiving index based on the recorded receiving indexes of the Nth receiving channel at different positions, and then determining the second position of the receiving lens of the Nth receiving channel when the receiving index of the Nth receiving channel is maximum based on the second position-receiving index table or the second position-receiving index curve.
S1203, according to trigonometric function, seventh position (X' 7 ,Y’ 7 ,Z’ 7 ) And an eighth position (X' 8 ,Y’ 8 ,Z’ 7 ) Acquiring a third included angle theta of the receiving lenses of the N receiving channels relative to an X 'Y' coordinate plane of the optical detector in a second coordinate system X 'Y' Z 3 。
In application, when the trigonometric function is a tangent trigonometric function, the third included angle θ 3 The calculation formula of (2) is as follows:
Figure BDA0004003780670000181
when the trigonometric function is a cotangent trigonometric function, the third included angle theta 3 The calculation formula of (2) is as follows:
Figure BDA0004003780670000182
when the trigonometric function is a sine trigonometric function, the third included angle theta 3 The calculation formula of (2) is as follows:
Figure BDA0004003780670000183
when the trigonometric function is a cosine trigonometric function, the third included angle theta 3 The calculation formula of (2) is as follows:
Figure BDA0004003780670000184
wherein D is 2 The distance between two adjacent receiving channels is expressed.
S1204, controlling the displacement system to translate the receiving lenses of the N receiving channels to a third initial position (X 'in the X' Y 'coordinate plane of the second coordinate system X' Y 'Z' 03 ,Y’ 03 ,Z’ 7 ) And in the seventh position (X' 7 ,Y’ 7 ,Z’ 7 ) Rotating the receiving lenses of the N receiving channels by a third included angle theta for the rotation center 3 So as to maximize the receiving index of the 1 st receiving channel and the M-th receiving channel.
In application, when the receiving lenses of the N receiving channels are translated to the third initial position, the 1 st receiving lens is located at the seventh position, and the receiving lenses of all receiving channels are rotated by the third included angle by taking the seventh position as the rotation center, so that the receiving lenses of the N receiving channels are located at the eighth position under the condition that the 1 st receiving lens is located at the seventh position, and at the moment, the receiving indexes of the 1 st receiving channel and the N receiving channel at the current Z' axis coordinate position are both the largest.
S1205, controlling the displacement system to translate the receiving lenses of the N receiving channels along the Z 'axis direction parallel to the second coordinate system X' Y 'Z', and obtaining the ninth position (X 'of the receiving lens of the N receiving channel when the receiving index parameter of the N receiving channel is maximum' 9 ,Y’ 9 ,Z’ 8 )。
In application, under the condition that the receiving indexes of the 1 st receiving channel and the N th receiving channel at the current Z-axis coordinate position are the largest, the receiving lenses of all the receiving channels are continuously shifted in the Z-axis direction, the receiving indexes of each different position of the N th receiving channel in the Z-axis direction are obtained and recorded through an optical power meter in the moving process until the recorded sample number of the receiving indexes of the N th receiving channel at each different position reaches the ninth preset sample number or the recorded receiving indexes of the N th receiving channel at each different position no longer appear the new maximum receiving indexes, a third position-receiving index table or a third position-receiving index curve capable of reflecting the corresponding relation between the positions of the N th receiving channel and the receiving indexes is generated based on the recorded receiving indexes of the N th receiving channel at different positions, and then the ninth position of the receiving lens of the N th receiving channel when the receiving indexes of the N th receiving channel are the largest is determined based on the third position-receiving index table or the third position-receiving index curve.
S1206, controlling the displacement system to translate the receiving lens of the Nth receiving channel to a ninth position (X ' along the Z ' axis direction parallel to the second coordinate system X ' Y ' Z ' 9 ,Y’ 9 ,Z’ 8 )。
In application, step S1201 to step S1206 are refinement steps of step S1101, and since all receiving lenses are integrally disposed, translating the receiving lenses of the nth receiving channel to the ninth position is translating all receiving lenses to the Z 'axis coordinate position of the ninth position along the Z' axis direction, and at this time, in theory, the receiving indexes of all receiving channels meet the design requirement of the multi-channel optical module.
In one embodiment, the control device is further configured to perform the following steps in performing the second optical module testing method and the second optical module coupling commissioning method:
and compensating the receiving index of each receiving channel detected by the optical power meter according to the insertion loss of the optical switch module.
In application, since the insertion loss exists in the connection interface between the optical switch module and each receiving channel, the receiving index of each receiving channel detected by the optical power meter is compensated according to the insertion loss, and the receiving index of each receiving channel after compensation is equal to the sum of the receiving index of each receiving channel detected by the optical power meter and the insertion loss.
Based on the second optical module coupling debugging method shown in fig. 17, when the optical module test coupling system is applied to the process of coupling debugging of the receiving channels of the unpackaged multi-channel optical module, the displacement system is controlled to adjust the positions of the receiving lenses of all the receiving channels relative to the lasers only according to the receiving indexes of the two receiving channels at the two ends of the optical module respectively, so that the receiving indexes of all the receiving channels meet the design requirement of the multi-channel optical module protocol, and the coupling debugging efficiency is high.
In application, the optical module test coupling system in the above embodiment may further include at least one of an optical power meter, an annular flux tester, a displacement system, a light source device, a power supply device, and the like, in addition to the optical switch module and the control device, where the optical module test coupling system may be integrated or combined according to actual needs to set as an optical module test coupling platform dedicated to optical power testing, annular flux testing, receiving index testing, and coupling debugging of the optical module.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
As shown in fig. 18, a control device 2 provided in an embodiment of the present invention includes: at least one processor 21 (only one processor is shown in fig. 18), a memory 22 and a computer program 23 stored in the memory 22 and executable on the at least one processor 21, the steps in the respective optical module test coupling method embodiments described above being implemented when the computer program 23 is executed by the processor 21.
In application, the control device may include, but is not limited to, a memory, a processor. It will be appreciated by those skilled in the art that fig. 18 is merely an example of a control device and is not intended to be limiting, and may include more or fewer devices than shown, or may combine some devices, or may be different devices, e.g., may also include or be external to an input-output device, a network access device, etc. The input output devices may include cameras, audio acquisition/playback devices, display devices, keyboards, keys, etc. The network access device may include a communication module configured to communicate with other devices, so that a user may send a control instruction to the control apparatus through the other devices to control (e.g., remotely control) an operating state of the control apparatus, so that the control apparatus may selectively perform steps in the respective optical module test coupling method embodiments according to the control instruction of the user.
In applications, the processor may be a central processing unit (Central Processing Unit, CPU), but also other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or any conventional processor or the like.
In applications, the memory may in some embodiments be an internal storage unit of the control device, such as a hard disk or a memory of the control device. The memory may in other embodiments also be an external storage device of the control apparatus, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the control apparatus. Further, the memory may also include both an internal memory unit and an external memory device of the control apparatus. The memory is used to store an operating system, application programs, boot Loader (Boot Loader), data, and other programs, etc., such as program code for a computer program, etc. The memory may also be used to temporarily store data that has been output or is to be output.
In applications, the communication module may be configured as any device capable of performing wired or wireless communication directly or indirectly with other devices according to actual needs, for example, the communication module may provide a solution that is applied to a network device and includes a communication interface (for example, a universal serial bus interface (Universal Serial Bus, USB), a wired local area network (Local Area Networks, LAN), a wireless local area network (Wireless Local Area Networks, WLAN) (for example, wi-Fi network), bluetooth, zigbee, a mobile communication network, a global navigation satellite system (Global Navigation Satellite System, GNSS), frequency modulation (Frequency Modulation, FM), short-range wireless communication technology (Near Field Communication, NFC), infrared technology (Infrared, IR), etc., where the communication module may include an antenna, or may include an antenna array of multiple antenna elements.
It should be noted that, because the content of information interaction and execution process between the above devices/units is based on the same concept as the method embodiment of the present invention, specific functions and technical effects thereof may be referred to in the method embodiment section, and will not be described herein.
It will be apparent to those skilled in the art that the above-described functional units are merely illustrated in terms of division for convenience and brevity, and that in practical applications, the above-described functional allocation may be performed by different functional units, i.e., the internal structure of the apparatus is divided into different functional units, so as to perform all or part of the above-described functions. The functional units in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention. The specific working process of the units in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the optical module test coupling method of any embodiment when being executed by a processor.
The embodiment of the invention also provides a computer program product, which when run on a control device, causes the control device to execute the optical module test coupling method of any embodiment.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above-described embodiments, and may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to control means, recording medium, computer Memory, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), electrical carrier signals, telecommunications signals, and software distribution media. Such as a U-disk, removable hard disk, magnetic or optical disk, etc.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus, control apparatus and method may be implemented by other methods. For example, the apparatus, control apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical function division, and there may be additional division methods in actual implementation, e.g., more than two elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims (15)

1. The optical module test coupling system is characterized by comprising an optical switch module and a control device;
the optical switch module is electrically connected with the control device;
in a first test procedure, the optical switch module is configured to:
the transmitting lenses of the M transmitting channels of the first optical module, the optical power meter and the annular flux tester are physically connected;
during the first test, the control device is configured to:
the optical power meter is electrically connected with the annular flux tester;
controlling the optical switch module to transmit optical signals transmitted by the transmitting lenses of the M transmitting channels to the optical power meter and the annular flux tester respectively;
Acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the M emitting channels detected by the annular flux tester;
wherein M is the total number of emission channels of the first optical module.
2. The optical module test coupling system of claim 1, wherein the optical switch module comprises a first optical switch and a first optical splitter;
the controlled end of the first optical switch is electrically connected with the control device, and the output end of the first optical switch is physically connected with the input end of the first optical splitter;
during the first test, the first optical switch is configured to:
the M input ends of the first optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner;
during the first test, the first optical splitter is configured to:
the first output end of the first optical splitter is physically connected with one input end of the optical power meter, and the second output end of the first optical splitter is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
The laser is electrically connected with the lasers of the M emission channels;
controlling the laser of the ith emission channel to emit an optical signal;
the optical path between the ith input end and the output end of the first optical switch is connected, and the optical path between the remaining M-1 input ends and the output end of the first optical switch is disconnected, so that the optical signals transmitted through the emission lens of the ith emission channel are transmitted to the optical power meter and the annular flux tester after being split by the first optical splitter;
acquiring the emitted light power of the ith emission channel detected by the light power meter and the annular flux of the ith emission channel detected by the annular flux tester;
where i=1, 2, …, M.
3. The optical module test coupling system of claim 1, wherein the optical switch module comprises a second optical switch;
the controlled end of the second optical switch is electrically connected with the control device;
during the first test, the second optical switch is configured to:
the M input ends of the second optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, the first output end of the second optical switch is physically connected with one input end of the optical power meter, and the second output end of the second optical switch is physically connected with the input end of the annular flux tester;
In the first test procedure, the control device is specifically configured to:
the laser is electrically connected with the lasers of the M emission channels;
controlling lasers of the ith emission channel and the jth emission channel to emit optical signals;
switching on an optical path between an ith input end and a first output end of the second optical switch and an optical path between a jth input end and a second output end of the second optical switch, and switching off the optical paths between the remaining M-2 input ends of the second optical switch and the first output end and the second output end, so that an optical signal transmitted through a transmitting lens of the ith transmitting channel is transmitted to the optical power meter and an optical signal transmitted through a transmitting lens of the jth transmitting channel is transmitted to the annular flux tester;
acquiring the emitted light power of the ith emission channel detected by the light power meter and the annular flux of the jth emission channel detected by the annular flux tester;
where i=1, 2, …, M, j=1, 2, …, M, i+notej, m+.gtoreq.2.
4. The optical module test coupling system of claim 1, wherein the optical switch module comprises a third optical switch;
the third optical switch is electrically connected with the control device;
During the first test, the third optical switch is configured to:
the M input ends of the third optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, the 1 st to M output ends of the third optical switch are respectively and physically connected with the 1 st to M input ends of the optical power meter in a one-to-one correspondence manner, and the M+1 th output end of the third optical switch is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
the optical paths between the ith input end and the M+1th output end of the third optical switch and the optical paths between the remaining M-1 input ends and the corresponding M-1 output ends are connected, so that optical signals transmitted through the transmitting lenses of the ith transmitting channel are transmitted to the annular flux tester, and optical signals transmitted through the transmitting lenses of the remaining M-1 transmitting channels are transmitted to the M-1 input ends of the optical power meter in a one-to-one correspondence;
acquiring the annular flux of the ith emission channel detected by the annular flux tester and the emission light power of the remaining M-1 emission channels detected by the light power meter;
Wherein i=1, 2, …, M is not less than 2.
5. The optical module test coupling system of claim 1, wherein the optical switch module comprises a fourth optical switch and a second optical splitter;
the fourth optical switch is electrically connected with the control device, and the M+1th output end of the fourth optical switch is physically connected with the input end of the second optical splitter;
during the first test, the fourth optical switch is configured to:
the M input ends of the fourth optical switch are respectively and physically connected with the emitting lenses of the M emitting channels in a one-to-one correspondence manner, and the 1 st to M output ends of the fourth optical switch are respectively and physically connected with the 1 st to M input ends of the optical power meter in a one-to-one correspondence manner;
during the first test, the second optical splitter is configured to:
the first output end of the second optical divider is physically connected with the (M+1) th input end of the optical power meter, and the second output end of the second optical divider is physically connected with the input end of the annular flux tester;
in the first test procedure, the control device is specifically configured to:
the optical paths between the ith input end and the M+1 th output end of the fourth optical switch and the optical paths between the remaining M-1 th input ends and the corresponding M-1 th output ends are connected, so that optical signals transmitted through the emission lenses of the ith emission channel are respectively transmitted to the M+1 th input ends of the optical power meter, the annular flux tester and the M-1 input ends of the optical power meter after being split by the second optical splitter;
Acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the ith emitting channel detected by the annular flux tester;
wherein i=1, 2, …, M is not less than 2.
6. The optical module test coupling system according to any one of claims 1 to 5, wherein M is not less than 2, the first optical module is not packaged, and emission lenses of the M emission channels are integrally arranged;
based on the first test procedure, in a first coupling debugging procedure, the control device is further configured to:
is electrically connected with the displacement system;
controlling the displacement system to adjust the positions of the emitting lenses of the M emitting channels relative to the laser according to the emitting light power of the 1 st emitting channel and the M emitting channel respectively so as to maximize the emitting light power of the 1 st emitting channel and the M emitting channel;
under the condition that the emission light power of the 1 st emission channel and the M th emission channel is maximum, if the emission light power of the rest emission channels is qualified, outputting a coupling debugging result representing that the emission light power of the M emission channels is qualified; otherwise, outputting a coupling debugging result representing that the emission light power of the residual emission channel is unqualified.
7. The optical module test coupling system of claim 6, wherein during the first coupling commissioning process, the control device is specifically configured to:
according to the emission light power of the 1 st emission channel, controlling the displacement system to translate the emission lenses of the M emission channels under a first coordinate system, and acquiring a first position of the emission lens of the 1 st emission channel and a first initial position of the emission lens of the M emission channels when the emission light power of the 1 st emission channel is maximum;
according to the emission light power of the Mth emission channel, controlling the displacement system to translate or rotate the emission lens of the Mth emission channel on an XY coordinate plane of the first coordinate system, and obtaining a second position of the emission lens of the Mth emission channel when the emission light power of the Mth emission channel is maximum;
acquiring a first included angle of the emitting lenses of the M emitting channels relative to an XY coordinate plane of the laser in the first coordinate system according to the trigonometric function, the first position and the second position;
the displacement system is controlled to translate the emitting lenses of the M emitting channels to the first initial position on an XY coordinate plane of the first coordinate system, and the emitting lenses of the M emitting channels are rotated by the first included angle by taking the first position as a rotation center, so that the emitted light power of the 1 st emitting channel and the emitted light power of the M emitting channels are maximum;
Controlling the displacement system to translate the emitting lenses of the M emitting channels along the Z-axis direction parallel to the first coordinate system, and acquiring a third position of the emitting lens of the M emitting channel when the emitting light power parameter of the M emitting channel is maximum;
controlling the displacement system to translate the emission lens of the M-th emission channel to the third position along a Z-axis direction parallel to the first coordinate system;
the Z-axis direction of the first coordinate system is parallel to the main optical axes of the emitting lenses of the M emitting channels.
8. The optical module test coupling system of claim 6, wherein during the first coupling commissioning process, the control device is further configured to:
controlling the displacement system to adjust the positions of the emitting lenses of the M emitting channels relative to a laser according to the annular fluxes of the 1 st emitting channel and the M emitting channel under the condition that the emitting light power of the M emitting channels is qualified, so as to maximize the annular fluxes of the 1 st emitting channel and the M emitting channel;
under the condition that the annular flux of the 1 st emission channel and the M th emission channel is maximum, if the annular flux of the remaining emission channels is qualified, outputting a coupling debugging result representing that the annular flux of the M emission channels is qualified; otherwise, outputting a coupling debugging result representing disqualification of the annular flux of the residual emission channel.
9. The optical module test coupling system of claim 8, wherein during the first coupling commissioning process, the control device is specifically configured to:
under the condition that the emitted light power of the M emission channels is qualified, controlling the displacement system to translate the emission lenses of the M emission channels under a first coordinate system according to the annular flux of the 1 st emission channel, and acquiring a fourth position of the emission lens of the 1 st emission channel and a second initial position of the emission lens of the M emission channels when the annular flux of the 1 st emission channel is maximum;
according to the annular flux of the Mth emission channel, controlling the displacement system to translate or rotate the emission lens of the Mth emission channel on an XY coordinate plane of the first coordinate system, and obtaining a fifth position of the emission lens of the Mth emission channel when the annular flux of the Mth emission channel is maximum;
acquiring second included angles of the emitting lenses of the M emitting channels relative to an XY coordinate plane of the laser in the first coordinate system according to the trigonometric function, the fourth position and the fifth position;
the displacement system is controlled to translate the emitting lenses of the M emitting channels to the second initial position on an XY coordinate plane of the first coordinate system, and the emitting lenses of the M emitting channels are rotated by the second included angle by taking the fourth position as a rotation center, so that annular fluxes of the 1 st emitting channel and the M th emitting channel are maximized;
Controlling the displacement system to translate the emission lenses of the M emission channels along the Z-axis direction parallel to the first coordinate system, and acquiring a sixth position of the emission lens of the M emission channel when the annular flux of the M emission channel is maximum;
controlling the displacement system to translate the emission lens of the M-th emission channel to the sixth position along a Z-axis direction parallel to the first coordinate system;
the Z-axis direction of the first coordinate system is parallel to the main optical axes of the emitting lenses of the M emitting channels.
10. The optical module test coupling system of any of claims 1-5, wherein in a second test procedure, the control device is configured to:
the first optical module is electrically connected with a built-in register of the second optical module;
acquiring receiving parameters of N receiving channels of the second optical module from the built-in register;
acquiring the receiving indexes of the N receiving channels according to the receiving parameters;
the receiving parameters comprise at least one of the positive emitter coupling logic level and the receiving signal intensity of the N receiving channels, the receiving index comprises at least one of the receiving optical power and the receiving sensitivity, N is the total number of the receiving channels of the second optical module, and N is less than or equal to M.
11. The optical module test coupling system of claim 10, wherein N is greater than or equal to 2, the second optical module is unpackaged, and receiving lenses of the N receiving channels are integrally arranged;
based on the second test procedure, in a second coupling debugging procedure, the control device is further configured to:
is electrically connected with the displacement system;
controlling the displacement system to adjust the positions of the receiving lenses of the N receiving channels relative to the optical detector according to the receiving indexes of the 1 st receiving channel and the N receiving channel respectively so as to maximize the receiving indexes of the 1 st receiving channel and the N receiving channel;
outputting a coupling debugging result representing that the receiving indexes of the N receiving channels are qualified if the receiving indexes of the rest receiving channels are qualified under the condition that the receiving indexes of the 1 st receiving channel and the N receiving channel are the largest; otherwise, outputting a coupling debugging result representing that the receiving index of the residual receiving channel is unqualified.
12. The optical module test coupling system of claim 11, wherein in the second coupling commissioning process, the control device is specifically configured to:
According to the receiving index of the 1 st receiving channel, controlling the displacement system to translate the receiving lenses of the N receiving channels under a second coordinate system, and acquiring a seventh position of the receiving lens of the 1 st receiving channel and a third initial position of the receiving lens of the N receiving channels when the receiving index of the 1 st receiving channel is maximum;
according to the receiving index of the Nth receiving channel, controlling the displacement system to translate or rotate the receiving lenses of the N receiving channels on the XY coordinate plane of the second coordinate system, and obtaining the eighth position of the receiving lenses of the Nth receiving channel when the receiving index of the Nth receiving channel is maximum;
acquiring third included angles of the receiving lenses of the N receiving channels relative to the XY coordinate plane of the optical detector in the second coordinate system according to the trigonometric function, the seventh position and the eighth position;
the displacement system is controlled to translate the receiving lenses of the N receiving channels to the third initial position on an XY coordinate plane of the second coordinate system, and the receiving lenses of the N receiving channels are rotated by the third included angle by taking the seventh position as a rotation center, so that the emitted light power of the 1 st receiving channel and the emitted light power of the N receiving channels are maximum;
Controlling the displacement system to translate the receiving lenses of the N receiving channels along the Z-axis direction parallel to the second coordinate system, and acquiring a ninth position of the receiving lens of the N receiving channel when the receiving index parameter of the N receiving channel is maximum;
controlling the displacement system to translate the receiving lens of the nth receiving channel to the ninth position along a Z-axis direction parallel to the second coordinate system;
the Z-axis direction of the second coordinate system is parallel to the main optical axes of the receiving lenses of the N receiving channels.
13. An optical module test coupling method, characterized by being applied to a control device in an optical module test coupling system according to any one of claims 1 to 12, the method comprising:
controlling the optical switch module to transmit optical signals transmitted by the transmitting lenses of the M transmitting channels to the optical power meter and the annular flux tester respectively;
and acquiring the emitted light power of the M emitting channels detected by the light power meter and the annular flux of the M emitting channels detected by the annular flux tester.
14. A control device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized by further comprising an input-output device or being electrically connected to the input-output device, the processor executing the computer program to perform the steps of the optical module test coupling method according to claim 13.
15. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the optical module test coupling method of claim 13.
CN202211626764.2A 2022-12-16 2022-12-16 Optical module test coupling system, method, control device and storage medium Pending CN116112068A (en)

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Applications Claiming Priority (1)

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CN202211626764.2A CN116112068A (en) 2022-12-16 2022-12-16 Optical module test coupling system, method, control device and storage medium

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CN116112068A true CN116112068A (en) 2023-05-12

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