CN112769473B - Automatic point measurement method and system for optical communication device - Google Patents
Automatic point measurement method and system for optical communication device Download PDFInfo
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- CN112769473B CN112769473B CN202011629967.8A CN202011629967A CN112769473B CN 112769473 B CN112769473 B CN 112769473B CN 202011629967 A CN202011629967 A CN 202011629967A CN 112769473 B CN112769473 B CN 112769473B
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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
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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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
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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Abstract
The invention discloses an automatic point measurement method and system for an optical communication device, wherein the method comprises the following steps: constructing a system architecture, and controlling a first optical switch to switch a first light source wavelength and a second light source wavelength through a plurality of paths of point light sources; controlling a second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the first light source; controlling the wavelength of a first light source to pass through a first path of a first direction circuit, and acquiring PDL data and IL data of the first path of the first direction circuit; controlling the wavelength of the first light source to pass through a second path of the first-direction line, and acquiring RL data of the second path of the first-direction line; controlling the wavelength of the first light source to pass through a first path of a second direction line, and acquiring IL data and DIR data of the first path of the second direction line; and controlling the wavelength of the first light source to pass through a second path of the second-direction line to acquire RL data of the second path of the second-direction line. The invention realizes automatic test of products by switching the light path without wiring for many times and has low cost.
Description
Technical Field
The invention relates to the technical field of embedded computer systems, in particular to an automatic point measurement method and system for an optical communication device.
Background
The traditional point measurement system of the optical communication device is characterized in that an optical switch is manually switched to switch light sources with different wavelengths, and the light sources are connected into a power meter or inserted into a return loss meter according to the product characteristics of the optical communication device to test the product parameters of the optical communication device. When the optical communication device product needs reverse wiring or the product port is more than the power meter port, the optical communication device needs to be rewired for many times, the operation is complex, the procedure is complex, and the testing efficiency is not high. Therefore, the invention of an automatic spot measurement method for an optical communication device is a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The present invention provides an automatic spot measurement method and system for an optical communication device, aiming at the above-mentioned defects in the prior art.
In a first aspect, the present invention discloses an automatic spot measurement method for an optical communication device, which includes constructing a system architecture of a multi-path point light source, a first optical switch, a second optical switch, a third optical switch, a polarization generator, a first coupler, a second coupler, a DUT tested device and a dual-channel power meter, wherein the system architecture includes:
establishing connection between the multi-path point light source and a plurality of channels of the first optical switch in a wired mode, and establishing connection between the first optical switch and the second optical switch; establishing connection of the second optical switch with the polarization generator and the first coupler, establishing connection of the polarization generator with the second coupler, and establishing wired connection of the second coupler with the DUT device under test and the dual-channel power meter, respectively; connecting the DUT device under test with a plurality of channels of the third optical switch and establishing a wired connection of the third optical switch with the first coupler;
controlling the first optical switch to switch the wavelength of a first light source through the multi-path point light source;
controlling the second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the first light source;
controlling a first light source wavelength to pass through a first path of the first direction line, and acquiring insertion loss data and polarization dependent loss data of the first path of the first direction line;
controlling the wavelength of the first light source to pass through a second path of the first directional line, and acquiring return loss data of the second path of the first directional line;
controlling the wavelength of the first light source to pass through a first path of the second direction line, and acquiring insertion loss data and directivity data of the first path of the second direction line;
and controlling the wavelength of the first light source to pass through a second path of the second directional line, and acquiring return loss data of the second path of the second directional line.
Preferably, the method for automatically point-measuring the optical communication device further includes:
controlling the first optical switch to switch the wavelength of a second light source through the multi-path point light source;
controlling the second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the second light source;
controlling the wavelength of a second light source to pass through a first path of the first direction line, and acquiring insertion loss data and polarization dependent loss data of the first path of the first direction line;
controlling the wavelength of the second light source to pass through a second path of the first directional line, and acquiring return loss data of the second path of the first directional line;
controlling the wavelength of the second light source to pass through a first path of the second directional line, and acquiring insertion loss data and directivity data of the first path of the second directional line;
and controlling the wavelength of the second light source to pass through a second path of the second directional line, and acquiring return loss data of the second path of the second directional line.
Preferably, the controlling the wavelength of the first light source to pass through the first path of the first directional line, and the acquiring insertion loss data and polarization dependent loss data of the first path of the first directional line includes:
in a first direction line, polarized light is generated by the polarization generator and transmitted to the second coupler, the second coupler transmits the polarized light to the DUT equipment to be tested, the third optical switch switches a plurality of channels of the polarized light of the DUT equipment to be tested to selectively output the polarized light to the first coupler, and the dual-channel power meter acquires and tests the polarized light transmitted by the first coupler to obtain insertion loss data and polarization-dependent loss data of a first path of the first direction line.
Preferably, the controlling the wavelength of the first light source to pass through the second path of the first directional line, and the obtaining the return loss data of the second path of the first directional line includes:
in the first direction line, polarized light is generated by the polarization generator and transmitted to the second coupler, the second coupler transmits the polarized light to the DUT equipment to be tested, echo signals of the system are reflected back to pass through the second coupler, the second coupler transmits the echo signals to the dual-channel power meter through the first light path, and echo loss data of the second path of the first direction line are obtained.
Preferably, the controlling the first light source wavelength to pass through the first path of the second directional line, and the obtaining insertion loss data and directivity data of the first path of the second directional line includes:
and on a second direction line, controlling the wavelength of the first light source to pass through the first coupler, controlling the third optical switch to switch in different channels, and transmitting the second coupler to the dual-channel power meter through an optical path to obtain insertion loss data and directivity data of the first path of the second direction line.
Preferably, the controlling the wavelength of the first light source to pass through the second path of the second directional line, and the obtaining return loss data of the second path of the second directional line includes:
and on a second direction line, controlling the wavelength of the second light source to pass through the first coupler, controlling the third optical switch to switch different channels to access to the DUT equipment to be tested, and transmitting return loss of the system to the dual-channel power meter through a second light path after being reflected back by the DUT equipment to be tested and the first coupler to obtain return loss data of a second path in a second direction.
Preferably, the specific method for acquiring the insertion loss data and the polarization dependent loss data of the first path of the first directional line by the dual-channel power meter is as follows:
before the DUT equipment to be tested is not accessed, obtaining the reading of the dual-channel power meter to obtain a first insertion loss value;
after the DUT equipment is accessed, the polarization generator is not started, and the reading of the dual-channel power meter is obtained to obtain a second insertion loss value;
or after the DUT equipment to be tested is accessed, the polarization generator is started, and the maximum value of the absolute value of the reading of the dual-channel power meter is obtained to obtain a second insertion loss value;
obtaining a difference value between the second insertion loss value and the first insertion loss value to obtain the insertion loss data;
after the DUT equipment to be tested is accessed, the polarization generator is started, and the maximum value and the minimum value of a plurality of readings of the dual-channel power meter in a preset time period are obtained;
and obtaining the difference value of the maximum value and the minimum value of a plurality of readings of the dual-channel power meter to obtain the polarization dependent loss data.
Preferably, the specific method for acquiring the return loss data of the second path of the first directional line by the dual-channel power meter is as follows:
obtaining a loss value of the second coupler;
and obtaining the difference value of the polarization-dependent loss data and the loss value of the second coupler to obtain the return loss data.
Preferably, the specific method for acquiring the insertion loss data and the directivity data of the first path of the second directional line by the dual-channel power meter is as follows:
obtaining a first insertion loss value of the dual channel power meter before not accessing the DUT device under test,
after the DUT equipment is accessed, obtaining the reading of the dual-channel power meter to obtain a third insertion loss value;
obtaining a difference value between the third insertion loss value and the first insertion loss value to obtain the insertion loss data;
and controlling the third optical switch to be switched to an output channel of the DUT equipment to be tested, switching an optical source signal of the DUT equipment to be tested, and acquiring the reading of the dual-channel power meter to obtain the directivity data.
In a second aspect, the present invention discloses a system including the method for automatic spot measurement of an optical communication device in the first aspect, the system including:
the multi-path point light source is used for switching a first light source wavelength and a second light source wavelength through the first optical switch;
the second optical path switch is used for switching different direction lines according to the configuration file of the DUT equipment to be tested;
a polarization generator for generating polarized light on the first directional line;
the second coupler is used for transmitting an echo signal generated on the first directional line to the input port of the DUT equipment to be tested into the power meter through a branch;
a third optical switch for switching different optical channels;
the first coupler is used for transmitting echo signals generated on an output port of the DUT equipment to be tested on a second directional line into the power meter through a branch;
the dual-channel power meter is used for testing according to the first path and the second path of the first direction line and the light source of the first path and the second path of the second direction line to respectively obtain insertion loss data, polarization-dependent loss data, return loss data and directivity data.
The automatic point measurement method of the optical communication device has the following beneficial effects that: constructing a system architecture of a plurality of paths of point light sources, a first optical switch, a second optical switch, a third optical switch, a polarization generator, a first coupler, a second coupler, DUT equipment to be tested and a dual-channel power meter, and controlling the first optical switch to switch the wavelength of a first light source through the plurality of paths of point light sources; controlling the second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the first light source; controlling a first light source wavelength to pass through a first path of the first direction line, and acquiring insertion loss data and polarization dependent loss data of the first path of the first direction line; controlling the wavelength of the first light source to pass through a second path of the first directional line, and acquiring return loss data of the second path of the first directional line; controlling the wavelength of the first light source to pass through a first path of the second direction line, and acquiring insertion loss data and directivity data of the first path of the second direction line; and controlling the wavelength of the first light source to pass through a second path of the second directional line, and acquiring return loss data of the second path of the second directional line. Therefore, the invention switches different light source wavelengths through the first light path switch; switching different light paths through the second light path switch; for the first light path switch, the third light path switch is switched to different channels of the corresponding DUT equipment to be tested, so that automatic testing of optical communication device products is realized, multiple wiring is not needed, misoperation is reduced, testing efficiency is improved, and cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
fig. 1 is a system architecture diagram of an automatic spot measurement method for an optical communication device according to a preferred embodiment of the present invention;
FIG. 2 is a flow chart of an automatic spot measurement method for an optical communication device according to a preferred embodiment of the present invention;
FIG. 3 is a flow chart of an automatic spot measurement method for an optical communication device according to another preferred embodiment of the present invention;
fig. 4 is a flowchart of a specific method for acquiring insertion loss data and polarization dependent loss data of a first path of a first directional line by the dual-channel power meter according to an automatic spot measurement method of an optical communication device in the preferred embodiment of the present invention;
fig. 5 is a flowchart of a specific method for acquiring insertion loss data and directivity data of the first path of the second directional line by the dual-channel power meter of the method for automatic point measurement of an optical communication device according to the preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Example one
The invention discloses a method, which switches different light source wavelengths through a first light path switch; switching different light paths through the second light path switch; for the first optical path switch, the third optical path switch is switched to different channels of the corresponding DUT tested device, so that the automatic test of the optical communication device product is realized, multiple wiring is not required, the misoperation is reduced, the test efficiency is improved, and the cost is low, referring to fig. 2, the method includes the following steps:
s1, constructing a system architecture of the multi-path point light source 1, the first optical switch 2, the second optical switch 3, the third optical switch 4, the polarization generator 5, the first coupler 6, the second coupler 7, the DUT device under test 8, and the dual-channel power meter 9, referring to fig. 1, the system architecture includes:
establishing the connection between the multi-path point light source 1 and the channels of the first optical switch 2 in a wired mode, and establishing the connection between the first optical switch 2 and the second optical switch 3; establishing connection of the second optical switch 3 with the polarization generator 5 and the first coupler 6, establishing connection of the polarization generator 5 with the second coupler 7, and establishing wired connection of the second coupler 7 with the DUT device under test 8 and the dual-channel power meter 9, respectively; connecting said DUT device under test 8 with a plurality of channels of said third optical switch 4 and establishing a wired connection of said third optical switch 4 with said first coupler 6;
s2, controlling the first optical switch 2 to switch the wavelength of the first light source through the multi-path point light source 1;
preferably, the first optical switch is a 1xN optical switch, and the 1xN optical switch is a mechanical optical switch, and is configured to switch different light source wavelengths to the multiple point light sources. In this embodiment, the 1xN optical switch is a 1x4 optical switch. In another preferred embodiment, the 1xN optical switch can be set according to the number of wavelengths of the light source to be switched for testing, and is not limited in particular.
S3, controlling the second optical switch 3 to switch the first directional circuit and the second directional circuit according to the wavelength of the first light source;
preferably, in this embodiment, the second optical switch is a 1 × 2 optical switch. The 1x2 optical switch is switched to different positions to realize the switching of the first direction circuit and the second direction circuit.
S4, controlling the wavelength of a first light source to pass through a first path of the first directional line, and acquiring insertion loss data IL and polarization dependent loss data PDL of the first path of the first directional line;
preferably, the controlling the wavelength of the first light source to pass through the first path of the first directional line, and the acquiring the insertion loss data IL and the polarization dependent loss data PDL of the first path of the first directional line includes:
in a first direction line, polarized light is generated by the polarization generator 5 and transmitted to the second coupler 7, the second coupler 7 transmits the polarized light to the DUT device under test 8, the third optical switch 4 switches a plurality of channels of the polarized light of the DUT device under test 8 to selectively output the switched polarized light to the first coupler 6, and the dual-channel power meter 9 acquires and tests the polarized light transmitted by the first coupler 6 to obtain insertion loss data IL and polarization-dependent loss data PDL of a first path of the first direction line.
S5, controlling the wavelength of the first light source to pass through the second path of the first directional line, and acquiring return loss data RL of the second path of the first directional line;
preferably, the controlling the wavelength of the first light source to pass through the second path of the first directional line, and the obtaining the return loss data RL of the second path of the first directional line includes:
in the first direction line, polarized light is generated by the polarization generator 5 and transmitted to the second coupler 7, the polarized light is transmitted to the DUT tested device 8 by the second coupler 7, the echo signal of the system is reflected back to pass through the second coupler 7, the second coupler 7 is transmitted to the dual-channel power meter 9 through a first optical path, and return loss data RL of the second path of the first direction line is obtained.
S6, controlling the wavelength of the first light source to pass through the first path of the second direction line, and acquiring insertion loss data IL and directivity data DIR of the first path of the second direction line;
preferably, the controlling the first light source wavelength to pass through the first path of the second directional line, and the obtaining the insertion loss data IL and the directivity data DIR of the first path of the second directional line includes:
on a second direction line, the wavelength of the first light source is controlled to pass through the first coupler 6, the third optical switch 4 is controlled to be switched into different channels, and the second coupler 7 is transmitted to the dual-channel power meter 9 through an optical path to obtain insertion loss data and directivity data of a first path of the second direction line.
And S7, controlling the wavelength of the first light source to pass through the second path of the second directional line, and acquiring return loss data RL of the second path of the second directional line.
Preferably, the controlling the first light source wavelength to pass through the second path of the second directional line, and the obtaining return loss data RL of the second path of the second directional line includes:
on a second direction line, the wavelength of the second light source is controlled to pass through the first coupler 6, the third optical switch 4 is controlled to switch different channels to access the DUT tested device 8, return loss of the system is reflected back to pass through the DUT tested device 8 and the first coupler 6, and is transmitted to the dual-channel power meter 9 through a second optical path, so that return loss data RL of a second path in a second direction is obtained.
Preferably, in the present embodiment, the third switch 4 is set to a 1 × 4 optical switch. In another preferred embodiment, the number of channels of the third switch 4 is equal to or greater than the number of channels of the first switch 2, and the number of channels of the third switch 4 is not limited herein.
Preferably, referring to fig. 3, the method for automatically testing a point of an optical communication device further includes:
s2', controlling the first optical switch 2 to switch the wavelength of the second light source through the multi-path point light source 1;
s3', controlling the second optical switch 3 to switch the first directional circuit and the second directional circuit according to the wavelength of the second light source;
s4', controlling the wavelength of the second light source to pass through the first path of the first directional line, and obtaining the insertion loss data IL and the polarization dependent loss data PDL of the first path of the first directional line;
s5', controlling the wavelength of the second light source to pass through the second path of the first directional line, and acquiring return loss data RL of the second path of the first directional line;
s6', controlling the wavelength of the second light source to pass through the first path of the second directional line, and obtaining insertion loss data IL and directivity data DIR of the first path of the second directional line;
s7', controlling the wavelength of the second light source to pass through the second path of the second directional line, and obtaining return loss data RL of the second path of the second directional line. In this embodiment, the method for controlling the second optical switch 3 to switch the first direction line and the second direction line to test the parameters of the optical communication device through the second light source wavelength is the same as the method for testing the first light source wavelength, and is not described herein again.
Preferably, referring to fig. 4, the specific method for acquiring the insertion loss data IL and the polarization dependent loss data PDL of the first path of the first directional line by the dual-channel power meter 9 includes:
s41, before the DUT tested device 8 is not accessed, obtaining the reading of the dual-channel power meter 9 to obtain a first insertion loss value IL 1;
s42, after the DUT tested device 8 is accessed, the polarization generator 5 is not started, and the reading of the dual-channel power meter 9 is obtained to obtain a second insertion loss value IL 2;
s42' or after the DUT tested device 8 is accessed, the polarization generator 5 is started, and the maximum value of the absolute value of the reading of the dual-channel power meter 9 is obtained to obtain a second insertion loss value IL 2;
preferably, the insertion loss data IL and the polarization dependent loss data PDL according to the present invention include two test methods, a separate test and a simultaneous test. During the separate test, after the DUT tested device 8 is accessed, the polarization generator 5 is not started, and the IL value of the DUT tested device is not changed if the polarizer is not started; after the system is stable, randomly obtaining the reading of the dual-channel power meter 9 to obtain a second insertion loss value IL 2; during the simultaneous test, after the DUT device 8 is accessed, the polarization generator 5 is turned on, and the maximum value of the absolute values of the readings of the two-channel power meter 9 is obtained to obtain a second insertion loss value IL 2.
S43, obtaining the difference between the second insertion loss value IL2 and the first insertion loss value IL1 to obtain the insertion loss data IL, i.e., IL2-IL 1.
S44, after the DUT tested device 8 is accessed, the polarization generator 5 is started, and the maximum value MaxIL and the minimum value MinIL of a plurality of readings of the dual-channel power meter 9 in a preset time period are obtained;
s45, obtaining the difference between the maximum and minimum of the readings of the two-channel power meter 9 to obtain the polarization dependent loss data, i.e., PDL max il-MinIL.
Preferably, the specific method for acquiring the return loss data RL of the second path of the first directional line by the dual-channel power meter 9 is as follows:
obtaining a loss value of the second coupler 7;
and obtaining the difference value of the polarization dependent loss data IL and the loss value of the second coupler 7 to obtain the return loss data RL. In this embodiment, the second coupler 7 has a 50% loss, specifically a loss value of 3dB, and the return loss data RL is IL2-IL1-3 dB.
Preferably, referring to fig. 5, the specific method for the dual-channel power meter 9 to obtain the insertion loss data IL and the directivity data DIR of the first path of the second directional line is as follows:
s61, before the DUT tested device 8 is not accessed, acquiring a first insertion loss value IL1 of the dual-channel power meter 9;
s62, after accessing the DUT tested device 8, obtaining the reading of the dual-channel power meter 9 to obtain a third insertion loss value IL 3; it will be appreciated that the third insertion loss value IL3 is the maximum of the absolute value of the reading of the two-channel power meter 9.
S63, obtaining the difference value of the third insertion loss value IL3 and the first insertion loss value IL1 to obtain the insertion loss data IL;
and S64, controlling the third optical switch 4 to be switched to an output channel of the DUT tested device 8, switching a light source signal of the DUT tested device 8, and acquiring the reading of the two-channel power meter 9 to obtain the directivity data DIR.
Preferably, the method for controlling the wavelength of the first light source to pass through the second path of the second directional line to obtain the return loss data RL of the second path of the second directional line is the same as the method for obtaining the return loss data RL of the second path of the first directional line by the dual-channel power meter 9, and is not described herein again.
Example two
The invention discloses a system, comprising the automatic point measurement method of the optical communication device in the first aspect, the system comprises:
the multi-path point light source device comprises a multi-path point light source 1 and a first optical switch 2, wherein the multi-path point light source 1 is used for switching a first light source wavelength and a second light source wavelength through the first optical switch 2;
the second optical path switch 3 is used for switching different direction lines according to the configuration file of the DUT equipment to be tested;
a polarization generator 5 for generating polarized light on the first direction line;
the second coupler 7 is used for transmitting echo signals generated on the first directional line to the input port of the DUT equipment to be tested into the power meter through a branch;
a third optical switch 4 for switching different optical channels;
the first coupler 6 is used for transmitting echo signals generated on an output port of the DUT equipment to be tested on a second directional line into a power meter through a branch;
the dual-channel power meter 9 is configured to perform a test according to the first path and the second path of the first direction line and the light source of the first path and the second path of the second direction line, and obtain insertion loss data, polarization-dependent loss data, return loss data, and directivity data, respectively.
In summary, the present invention switches different wavelengths of the light source through the first optical path switch; switching different light paths through the second light path switch; for the first light path switch, the third light path switch is switched to different channels of the corresponding DUT equipment to be tested, so that automatic testing of optical communication device products is realized, multiple wiring is not needed, misoperation is reduced, testing efficiency is improved, and cost is low.
The method and the system for automatic point measurement of the optical communication device provided by the invention are described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be a change in the specific implementation and application scope, and in summary, the content of the present specification is only an implementation of the present invention, and not a limitation to the scope of the present invention, and all equivalent structures or equivalent flow transformations made by the content of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention. And should not be construed as limiting the invention.
Claims (10)
1. An automatic spot measurement method of an optical communication device is characterized by comprising the following steps:
constructing a system architecture of a multi-path point light source, a first optical switch, a second optical switch, a third optical switch, a polarization generator, a first coupler, a second coupler, a DUT device under test and a dual-channel power meter, wherein the system architecture comprises:
establishing connection between the multi-path point light source and a plurality of channels of the first optical switch in a wired mode, and establishing connection between the first optical switch and the second optical switch; establishing connection of the second optical switch with the polarization generator and the first coupler, establishing connection of the polarization generator with the second coupler, and establishing wired connection of the second coupler with the DUT device under test and the dual-channel power meter, respectively; connecting the DUT device under test with a plurality of channels of the third optical switch and establishing a wired connection of the third optical switch with the first coupler;
controlling the first optical switch to switch the wavelength of a first light source through the multi-path point light source;
controlling the second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the first light source;
controlling a first light source wavelength to pass through a first path of the first direction line, and acquiring insertion loss data and polarization dependent loss data of the first path of the first direction line;
controlling the wavelength of the first light source to pass through a second path of the first directional line, and acquiring return loss data of the second path of the first directional line;
controlling the wavelength of the first light source to pass through a first path of the second direction line, and acquiring insertion loss data and directivity data of the first path of the second direction line;
and controlling the wavelength of the first light source to pass through a second path of the second directional line, and acquiring return loss data of the second path of the second directional line.
2. The method of claim 1, wherein the method further comprises:
controlling the first optical switch to switch the wavelength of a second light source through the multi-path point light source;
controlling the second optical switch to switch a first direction circuit and a second direction circuit according to the wavelength of the second light source;
controlling the wavelength of a second light source to pass through a first path of the first direction line, and acquiring insertion loss data and polarization dependent loss data of the first path of the first direction line;
controlling the wavelength of the second light source to pass through a second path of the first directional line, and acquiring return loss data of the second path of the first directional line;
controlling the wavelength of the second light source to pass through a first path of the second directional line, and acquiring insertion loss data and directivity data of the first path of the second directional line;
and controlling the wavelength of the second light source to pass through a second path of the second directional line, and acquiring return loss data of the second path of the second directional line.
3. The method of claim 1, wherein the controlling the wavelength of the first light source to pass through the first path of the first directional line, and the obtaining the insertion loss data and the polarization dependent loss data of the first path of the first directional line comprises:
in a first direction line, polarized light is generated by the polarization generator and transmitted to the second coupler, the second coupler transmits the polarized light to the DUT equipment to be tested, the third optical switch switches a plurality of channels of the polarized light of the DUT equipment to be tested to selectively output the polarized light to the first coupler, and the dual-channel power meter acquires and tests the polarized light transmitted by the first coupler to obtain insertion loss data and polarization-dependent loss data of a first path of the first direction line.
4. The method of claim 1, wherein the controlling the wavelength of the first light source to pass through the second path of the first directional line, and the obtaining the return loss data of the second path of the first directional line comprises:
in the first direction line, polarized light is generated by the polarization generator and transmitted to the second coupler, the second coupler transmits the polarized light to the DUT equipment to be tested, echo signals of the system are reflected back to pass through the second coupler, the second coupler transmits the echo signals to the dual-channel power meter through the first light path, and echo loss data of the second path of the first direction line are obtained.
5. The method of claim 1, wherein the controlling the first light source wavelength to pass through the first path of the second directional line and the obtaining the insertion loss data and the directivity data of the first path of the second directional line comprises:
and on a second direction line, controlling the wavelength of the first light source to pass through the first coupler, controlling the third optical switch to switch in different channels, and transmitting the second coupler to the dual-channel power meter through an optical path to obtain insertion loss data and directivity data of the first path of the second direction line.
6. The method of claim 2, wherein the controlling the wavelength of the first light source to pass through the second path of the second directional line and the obtaining the return loss data of the second path of the second directional line comprises:
and on a second direction line, controlling the wavelength of the second light source to pass through the first coupler, controlling the third optical switch to switch different channels to access to the DUT equipment to be tested, and transmitting return loss of the system to the dual-channel power meter through a second light path after being reflected back by the DUT equipment to be tested and the first coupler to obtain return loss data of a second path in a second direction.
7. The method as claimed in claim 3, wherein the method for acquiring the insertion loss data and the polarization dependent loss data of the first path of the first directional line by the dual-channel power meter comprises:
before the DUT equipment to be tested is not accessed, obtaining the reading of the dual-channel power meter to obtain a first insertion loss value;
after the DUT equipment is accessed, the polarization generator is not started, and the reading of the dual-channel power meter is obtained to obtain a second insertion loss value;
or after the DUT equipment to be tested is accessed, the polarization generator is started, and the maximum value of the absolute value of the reading of the dual-channel power meter is obtained to obtain a second insertion loss value;
obtaining a difference value between the second insertion loss value and the first insertion loss value to obtain the insertion loss data;
after the DUT equipment to be tested is accessed, the polarization generator is started, and the maximum value and the minimum value of a plurality of readings of the dual-channel power meter in a preset time period are obtained;
and obtaining the difference value of the maximum value and the minimum value of a plurality of readings of the dual-channel power meter to obtain the polarization dependent loss data.
8. The automatic spot measurement method of claim 7, wherein the method for acquiring the return loss data of the second path of the first directional line by the dual-channel power meter comprises:
obtaining a loss value of the second coupler;
and obtaining the difference value of the polarization-dependent loss data and the loss value of the second coupler to obtain the return loss data.
9. The method as claimed in claim 7, wherein the method for acquiring the insertion loss data and the directivity data of the first path of the second directional line by the dual-channel power meter comprises:
obtaining a first insertion loss value of the dual channel power meter before not accessing the DUT device under test,
after the DUT equipment is accessed, obtaining the reading of the dual-channel power meter to obtain a third insertion loss value;
obtaining a difference value between the third insertion loss value and the first insertion loss value to obtain the insertion loss data;
and controlling the third optical switch to be switched to an output channel of the DUT equipment to be tested, switching an optical source signal of the DUT equipment to be tested, and acquiring the reading of the dual-channel power meter to obtain the directivity data.
10. An automatic spot measurement system for an optical communication device, the system comprising:
the multi-path point light source is used for switching a first light source wavelength and a second light source wavelength through the first optical switch;
the second light path switch is used for switching different direction lines according to the configuration file of the DUT equipment to be tested;
a polarization generator for generating polarized light on the first directional line;
the second coupler is used for transmitting an echo signal generated on the first directional line to the input port of the DUT equipment to be tested into the power meter through a branch;
a third optical switch for switching different optical channels;
the first coupler is used for transmitting an echo signal generated on a second directional line to an output port of the DUT equipment to be tested into a power meter through a branch;
the dual-channel power meter is used for testing according to the first path and the second path of the first direction line and the light source of the first path and the second path of the second direction line to respectively obtain insertion loss data, polarization-dependent loss data, return loss data and directivity data.
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| CN103438995A (en) * | 2013-08-13 | 2013-12-11 | 中国电子科技集团公司第二十三研究所 | Multi-channel optical power automatic monitor and testing method thereof |
| CN205725757U (en) * | 2016-05-05 | 2016-11-23 | 成都君禾天成科技有限公司 | A kind of optical module test system being applied to optical communication field |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103438995A (en) * | 2013-08-13 | 2013-12-11 | 中国电子科技集团公司第二十三研究所 | Multi-channel optical power automatic monitor and testing method thereof |
| CN205725757U (en) * | 2016-05-05 | 2016-11-23 | 成都君禾天成科技有限公司 | A kind of optical module test system being applied to optical communication field |
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