CN114199518A - Insertion loss measuring device and method - Google Patents

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses an insertion loss measuring device, which comprises: the optical cross-connect device comprises a controller, a transmitting module, a receiving module and a loopback module, wherein the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect device; the controller is used for controlling the transmitting module to transmit first detection light with first power to the optical cross-connect equipment; the loopback module is used for returning the first detection light transmitted by the optical cross connection equipment to the receiving module; the receiving module is used for detecting the power of the returned first detection light and taking the detected power as second power; the controller is also configured to determine an insertion loss measurement of the optical cross-connect device based on the first power and the second power. The embodiment of the invention also discloses an insertion loss measuring method. The insertion loss measuring equipment and method provided by the embodiment of the invention can improve the reusability of the insertion loss measurement of the optical cross matrix equipment, and can also carry out real-time measurement on the insertion loss of the optical cross matrix equipment in normal business.

Description

Insertion loss measuring device and method

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to insertion loss measuring equipment and method.

Background

Optical cross-connect (OXC) equipment is equipment used for optical fiber network nodes, can flexibly and effectively manage an optical transmission network by performing line crossing on optical signals, and is an important means for realizing reliable network protection, recovery and automatic wiring and monitoring.

At present, optical cross-connect equipment is mostly connected by adopting an optical cross matrix, because optical fibers on the side of the optical cross matrix are easily dirty or have poor contact, and problems are difficult to detect on the side of the optical cross matrix, the optical fiber problems in the optical cross matrix equipment are judged by detecting the insertion loss of each section of optical fiber by external detection equipment at present, wherein the insertion loss refers to the insertion loss which is the signal power loss caused by the insertion of a device into a transmission line or an optical fiber.

Since the insertion loss of the optical cross-matrix device varies with use or transportation, it is necessary to frequently measure the insertion loss of the optical cross-matrix device. However, there are many ports to be measured in the optical cross matrix device, and if the external detection device is used to measure the insertion loss of the optical cross matrix device, the connection with the optical fiber in the optical cross matrix device needs to be performed again each time, so that the reusability is poor; and after the optical cross matrix equipment is put into use, the insertion loss of the optical cross matrix equipment cannot be measured in real time by adopting external detection equipment.

Disclosure of Invention

The invention aims to provide insertion loss measuring equipment and method, which can improve reusability of insertion loss measurement of optical cross matrix equipment and realize real-time measurement of insertion loss of the optical cross matrix equipment.

To solve the above technical problem, an embodiment of the present invention provides an insertion loss measuring apparatus, including: the optical cross-connect device comprises a controller, a transmitting module, a receiving module and a loopback module, wherein the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect device; the controller is used for controlling the transmitting module to transmit first detection light with first power to the optical cross-connect equipment; the loopback module is used for returning the first detection light transmitted by the optical cross connection equipment to the receiving module; the receiving module is used for detecting the power of the returned first detection light and taking the detected power as second power; the controller is also configured to determine an insertion loss measurement of the optical cross-connect device based on the first power and the second power.

The embodiment of the invention also provides an insertion loss measuring method, which is applied to insertion loss measuring equipment, wherein the insertion loss measuring equipment comprises a controller, a transmitting module, a receiving module and a loopback module, the transmitting module, the receiving module and the loopback module are integrated on optical cross-connect equipment, and the method comprises the following steps: controlling a transmitting module to transmit first detection light with first power to optical cross-connect equipment by using a controller; returning the first detection light transmitted by the optical cross connection equipment to the receiving module by using a loopback module; detecting the power of the returned first detection light by using a receiving module, and taking the detected power as second power; an insertion loss measurement of the optical cross-connect device is determined based on the first power and the second power.

Compared with the prior art, the method and the device for measuring the insertion loss of the optical cross-connect equipment have the advantages that the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect equipment, and the insertion loss measuring result of the optical cross-connect equipment is determined according to the transmitting power and the receiving power of the detected light. Because the insertion loss measuring equipment is integrated on the optical cross-connect equipment, the optical fiber connection with the optical cross-connect equipment is not required to be carried out again in each measurement, and the reusability of the insertion loss measurement of the optical cross-connect equipment is improved; meanwhile, the measuring equipment is integrated on the optical cross-connect equipment, so that the measurement of the optical cross-connect equipment can be carried out at any time, normal service is not influenced, and the real-time measurement of the insertion loss of the optical cross-connect equipment can be realized even after the optical cross-connect equipment is put into use.

Drawings

One or more embodiments are illustrated by the corresponding figures in the drawings, which are not meant to be limiting.

Fig. 1 is a schematic structural diagram of an insertion loss measuring apparatus according to a first embodiment of the present invention;

fig. 2 is an exemplary diagram of a self-loop insertion loss measurement performed by an insertion loss measurement device according to a second embodiment of the present invention;

fig. 3 is an exemplary diagram of inter-board insertion loss measurement performed by an insertion loss measurement apparatus according to a second embodiment of the present invention;

fig. 4 is another exemplary diagram of an inter-board insertion loss measurement performed by an insertion loss measurement apparatus according to a second embodiment of the present invention;

fig. 5 is a schematic flow chart of an insertion loss measuring method according to a third embodiment of the present invention;

fig. 6 is a schematic flow chart of a method for measuring insertion loss according to a third embodiment of the present invention;

fig. 7 is a schematic flow chart of a method for measuring insertion loss according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.

A first embodiment of the present invention relates to an insertion loss measuring apparatus, as shown in fig. 1, including a controller 101, a transmitting module 102, a receiving module 103, and a loopback module 104. Wherein the transmitting module 102, the receiving module 103 and the loopback module 104 are integrated on the optical cross-connect device 20.

Specifically, the controller 101 is configured to control the transmitting module 102 to transmit the first detection light with the first power to the optical cross-connect apparatus 20; the loopback module 104 is configured to return the first detection light transmitted by the optical cross connect device 20 to the receiving module 103; the receiving module 103 is configured to detect power of the returned first detection light, and use the detected power as a second power; the controller 101 is configured to determine an insertion loss measurement of the optical cross-connect apparatus 20 based on the first power and the second power.

Alternatively, when the controller 101 determines the insertion loss measurement result of the optical cross connect device 20 according to the first power and the second power, the difference between the first power and the second power may be used as the insertion loss measurement result of the optical cross connect device 20, or a correction may be performed on the basis of the difference, for example, a correction coefficient is multiplied, and the corrected result is used as the insertion loss measurement result.

Optionally, the emission module 102 supports emission of multiple wavelengths of detected light, and the output power of the detected light supports regulation.

Optionally, the receiving module 103 supports detecting power of multiple wavelengths.

In a specific example, the loopback module 104 is further configured to determine whether the wavelength of the first detection light is available, and return information about whether the wavelength of the first detection light is available to the controller 101; the controller 101 is further configured to control the transmitting module 102 to adjust the wavelength to transmit the second detection light with the power of the first power to the optical cross-connect device 20 when the wavelength of the first detection light is unavailable.

Optionally, if the loopback module 104 determines that the wavelength of the first detection light is available, a correct code is returned to the controller 101; if the loopback module 104 determines that the wavelength of the first detection light is not available, an error code is returned to the controller 102.

Since the same wavelength light interferes with the optical cross-connect equipment 20, when the insertion loss measurement is performed using the detection light, the detection should be performed using light having a wavelength different from that of the light currently used by the optical cross-connect equipment 20. Optionally, when determining whether the first detection light is available, the loopback module 104 may determine, according to whether the wavelength of the first detection light is the same as the wavelength used by the current service of the optical cross connect device 20, if the wavelength of the first detection light is the same as one of the wavelengths used by the current service of the optical cross connect device 20, it is determined that the first detection light is unavailable, otherwise, it is determined that the first detection light is available. For example, the loopback module 104 matches the wavelength of the first detection light with the wavelength of the light used by the optical cross connect device 20 for the current service one by one, and if the matching is successful, it indicates that the wavelength of the detection light is one of the wavelengths used by the optical cross connect device 20 for the current service, it determines that the first detection light is not available, and the wavelength of the detection light needs to be changed.

It should be understood that the insertion loss measuring device provided by the embodiment of the present invention may also manually select the wavelength of the detection light, and the controller 101 controls the transmitting module 102 to transmit the light selected by the user as the detection light, wherein the light is selected by the user and is different from the wavelength of the light currently used by the optical cross-connect device.

In a specific example, the controller 101 is further configured to determine whether the second power is within a preset range, and if the second power is not within the preset range, control the transmitting module 102 to transmit third detection light with a third power to the optical cross-connect device 20, where the preset range is determined by the detection accuracy of the receiving module 103, and the third power is obtained by adjusting the first power according to a preset step size.

It should be noted that, when the receiving module 103 needs to meet a certain detection accuracy, the power of the received detection light needs to be within a range, and therefore a preset range needs to be defined for the power of the returned detection light, so as to ensure that the receiving module 103 can effectively detect the power of the detection light, and further determine the insertion loss measurement result. The preset range may be set based on the power of the detection light effectively detected by the receiving module 103, and the specific value is not limited here.

Specifically, if the controller 101 determines that the second power is within the preset range, the controller 101 determines an insertion loss measurement result of the optical cross-connect device according to the first power and the second power; if the controller 101 determines that the second power is not within the preset range, the controller 101 controls the transmitting module 102 to transmit third detection light with a power of the third power to the optical cross-connect device 20, then the receiving module 103 detects the power of the third detection light, and uses the detected power as a fourth power, and then the controller 101 determines whether the fourth power is within the preset range, and if not, the power of the detection light is adjusted again according to a preset step length until the controller 101 determines that the detection light is within the preset range, so that the insertion loss measurement result of the optical cross-connect device 20 can be determined. The preset step length can be set according to actual needs, and generally speaking, when the preset step length is set to be smaller, the number of times of adjustment is more; when the preset step length is set to be larger, the adjusting times are fewer.

According to the insertion loss measuring device provided by the invention, the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect device, and the insertion loss measuring result of the optical cross-connect device is determined according to the transmitting power and the receiving power of the detection light. Because the insertion loss measuring equipment is integrated on the optical cross-connect equipment, the optical fiber connection with the optical cross-connect equipment is not required to be carried out again in each measurement, and the reusability of the insertion loss measurement of the optical cross-connect equipment is improved; meanwhile, the measuring equipment is integrated on the optical cross-connect equipment, so that the measurement of the optical cross-connect equipment can be carried out at any time, normal service is not influenced, and the real-time measurement of the insertion loss of the optical cross-connect equipment can be realized even after the optical cross-connect equipment is put into use.

A second embodiment of the present invention relates to an insertion loss measurement device, and is substantially the same as the first embodiment except that in the embodiment of the present invention, the optical cross-connect device 20 is an optical cross-matrix device 20 ', the optical cross-matrix device 20 ' includes N slot positions, and the transmitting module 102, the receiving module 103, and the loopback module 104 are connected to the optical cross-matrix device 20 ' through at least one slot position, where N is a positive integer greater than 1.

Optionally, the transmitting module 102 and the receiving module 103 are connected to each slot of the optical cross matrix device 20', and the number of the loopback modules 104 is N, and each loopback module is connected to each slot. Preferably, in practical application, the loopback module 104 can be compatible with the measurement of normal service and insertion loss at the same time, that is, when in normal use, the light of the normal service can pass through the loopback module 104; when measuring the insertion loss, the light of the normal service may also normally pass through the loopback module 104, and the loopback block 104 may perform the insertion loss measurement of the optical cross matrix device 20' by creating an insertion loss measurement channel.

In a specific example, please refer to fig. 2, which is an exemplary diagram of a self-loop insertion loss measurement performed by an insertion loss measurement apparatus according to an embodiment of the present invention. The dotted lines in fig. 2 represent the connection, and the solid lines represent the light paths. Specifically, the controller 101 controls the transmitting module 102 to transmit the first detection light with the first power to the kth slot of the optical cross matrix device 20', where K is a positive integer and is less than or equal to N; the loopback module 104 is configured to return the first detection light to the receiving module 103 at the kth slot; the receiving module 103 is configured to detect power of the returned first detection light, and use the detected power as a second power; the controller 101 determines a self-loop insertion loss measurement of the optical cross-matrix device 20' from the first power and the second power.

In a specific example, please refer to fig. 3, which is an exemplary diagram of the insertion loss measurement between boards performed by the insertion loss measurement apparatus according to the embodiment of the present invention. Similarly, the dotted lines in fig. 3 represent the connection, and the solid lines represent the light paths. The loopback module 104 at least includes a first loopback unit 1041 and a second loopback unit 1042, the first loopback unit 1041 is connected with a K-th slot, the second loopback unit 1042 is connected with a J-th slot, K and J are positive integers and less than or equal to N; the controller 101 is configured to control the transmitting module 102 to transmit first detection light with first power to the kth slot; the first loopback unit 1041 is configured to send the first detection light from the kth slot to the jth slot; the second loopback unit 1042 is used for returning the first detection light to the receiving module 103 at the jth slot position; the receiving module 103 is configured to detect the power of the returned first detection light as a second power; the controller 101 is further configured to determine an inter-board insertion loss measurement between the kth slot and the jth slot according to the first power and the second power.

It is understood that the first loopback unit 1041 and the second loopback unit 1042 can be implemented by two loopback modules 104, for example, as shown in fig. 4, which is another exemplary diagram of the inter-board insertion loss measurement performed by the insertion loss measurement device provided in the embodiment of the present invention. In fig. 4, the dotted line represents a connection relationship, the solid line represents an optical path, N loopback modules 104 are provided, and correspond to N slots of the optical cross matrix device 20' one by one, and when the inter-board insertion loss between the K-th slot and the J-th slot needs to be measured, the loopback module 104 of the K-th slot and the loopback module 104 of the J-th slot are used simultaneously. In addition, fig. 4 may also perform self-loop insertion loss measurement, and since the loop-back module 104 has N slots, the self-loop insertion loss measurement of the N slots may be performed, that is, the self-loop insertion loss measurement of each slot is performed separately, so that the self-loop insertion loss measurement of the N slots of the optical cross matrix device 20' may be completed.

Alternatively, the loopback module 104 may include a self-loopback measurement mode and an inter-board measurement mode, and may be configured manually or by the controller 101.

Alternatively, when determining the inter-board insertion loss measurement result between the kth slot position and the jth slot position according to the first power and the second power, the controller 101 may use a difference between the first power and the second power as the inter-board insertion loss measurement result between the kth slot position and the jth slot position. However, since the insertion loss of the detection light from the transmitting module 102 to the K-th slot and the insertion loss of the detection light from the J-th slot to the receiving module 103 are also caused, the difference between the first power and the second power is not accurate enough to be used as the inter-board insertion loss measurement result of the K, J slots. Optionally, the insertion loss of the first and second optical paths in fig. 3 may be subtracted from the difference value to obtain the insertion loss of the third optical path as a measurement result of the insertion loss between the kth slot and the jth slot, where the insertion loss of the first optical path may be obtained by measuring the self-loop insertion loss of the kth slot, and the insertion loss of the second optical path may be obtained by measuring the self-loop insertion loss of the jth slot.

According to the insertion loss measuring device provided by the embodiment of the invention, on the basis that the transmitting module, the receiving module and the loopback module are integrated in the optical cross matrix device, the transmitting module, the receiving module and the loopback module are connected with the optical cross matrix device through at least one slot position, and the self-loop insertion loss measurement and the inter-board insertion loss measurement of the optical cross matrix device can be realized by controlling the trend of detection light; meanwhile, when the inter-board insertion loss measurement result is calculated, a more accurate inter-board insertion loss measurement result can be obtained by combining the self-loop insertion loss measurement, so that the accuracy of inter-board insertion loss measurement is improved.

It should be noted that, all the modules referred to in the foregoing embodiments are logical modules, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may also be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, the above-mentioned embodiments do not introduce elements that are not so closely related to solve the technical problems proposed by the present invention, but this does not indicate that there are no other elements in the above-mentioned embodiments.

A third embodiment of the present invention relates to an insertion loss measurement method applied to an insertion loss measurement device, where the insertion loss measurement device includes a controller, a transmitting module, a receiving module, and a loopback module, and the transmitting module, the receiving module, and the loopback module are integrated on an optical cross-connect device, as shown in fig. 5, the method specifically includes the following steps:

s201: and controlling the transmitting module to transmit the first detection light with the first power to the optical cross-connect equipment by using the controller.

S202: and returning the first detection light transmitted by the optical cross-connect equipment to the receiving module by using a loopback module.

S203: and detecting the power of the returned first detection light by using a receiving module, and taking the detected power as second power.

S204: an insertion loss measurement of the optical cross-connect device is determined based on the first power and the second power.

Optionally, S204 is specifically: an insertion loss measurement of the optical cross-connect device is determined from the first power and the second power with a controller.

Optionally, after S201, that is, after the controller controls the transmitting module to transmit the first detection light with the first power to the optical cross-connect device, the method further includes: judging whether the wavelength of the first detection light is available by using a loopback module; if the wavelength of the first detection light is not available, the controller controls the transmitting module to adjust the wavelength and then transmit second detection light with the first power to the optical cross-connect equipment.

Optionally, after S203, that is, after detecting the power of the returned first detection light by using the receiving module, and taking the detected power as the second power, the method further includes: judging whether the second power is within a preset range by using a controller; and if the second power is not in the preset range, controlling the transmitting module to transmit third detection light with the power of third power to the optical cross-connect equipment by using the controller, wherein the preset range is determined by the detection precision of the receiving module, and the third power is obtained by adjusting the first power according to the preset step length.

Optionally, the optical cross-connect device is an optical cross matrix device, the optical cross matrix device includes N slots, the transmit module, the receive module, and the loopback module are connected to the optical cross matrix device through at least one slot, and N is a positive integer greater than 1.

In a specific example, please refer to fig. 6, which is a flowchart illustrating a process of measuring self-loop insertion loss by the insertion loss measuring method according to the embodiment of the present invention, and the process includes the following steps:

s201': and controlling the transmitting module to send first detection light to a Kth slot position of the optical cross matrix equipment by using the controller, wherein K is a positive integer.

S202: and returning the first detection light to the receiving module at the Kth slot position by utilizing a loopback module.

S203: and detecting the power of the returned first detection light by using a receiving module, and taking the detected power as second power.

S204: and determining a self-loop insertion loss measurement result of the Kth slot position according to the first power and the second power by using the controller.

In a specific example, the loopback module at least comprises a first loopback unit and a second loopback unit, the first loopback unit is connected with the Kth slot position, the second loopback unit is connected with the Jth slot position, and K and J are positive integers and are less than or equal to N; please refer to fig. 7, which is a flowchart illustrating a process of measuring inter-board insertion loss by the insertion loss measuring method according to the embodiment of the present invention, specifically including the following steps:

s201': and controlling the transmitting module to transmit the first detection light to the Kth slot position by using the controller.

S202': and sending the first detection light to the J-th slot position from the Kth slot position by utilizing the first loopback unit.

S203': and returning the first detection light to the receiving module by using a second loopback unit.

S204': and detecting the power of the returned first detection light by using a receiving module, and taking the detected power as second power.

S205': and determining an inter-board insertion loss measurement result between the Kth slot position and the J th slot position according to the first power and the second power by using the controller.

According to the insertion loss measuring method provided by the embodiment of the invention, the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect equipment, and the insertion loss measuring result of the optical cross-connect equipment is determined according to the transmitting power and the receiving power of the detection light. Because the insertion loss measuring equipment is integrated on the optical cross-connect equipment, the optical fiber connection with the optical cross-connect equipment is not required to be carried out again in each measurement, and the reusability of the insertion loss measurement of the optical cross-connect equipment is improved; meanwhile, the measuring equipment is integrated on the optical cross-connect equipment, so that the measurement of the optical cross-connect equipment can be carried out at any time, normal service is not influenced, and the real-time measurement of the insertion loss of the optical cross-connect equipment can be realized even after the optical cross-connect equipment is put into use.

It should be understood that this embodiment is a method example corresponding to the first and second embodiments, and may be implemented in cooperation with the first and second embodiments. The related technical details mentioned in the first and second embodiments are still valid in this embodiment, and are not described herein again to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first and second embodiments.

In addition, those skilled in the art can understand that the steps of the above methods are divided for clarity, and the implementation can be combined into one step or split into some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, and the method is within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims (12)

1. An insertion loss measuring apparatus, comprising: the optical cross-connect device comprises a controller, a transmitting module, a receiving module and a loopback module, wherein the transmitting module, the receiving module and the loopback module are integrated on the optical cross-connect device;

the controller is used for controlling the transmitting module to transmit first detection light with first power to the optical cross-connect equipment;

the loopback module is used for returning the first detection light transmitted by the optical cross-connect equipment to the receiving module;

the receiving module is used for detecting the power of the returned first detection light and taking the detected power as a second power;

the controller is further configured to determine an insertion loss measurement of the optical cross-connect device based on the first power and the second power.

2. The insertion loss measurement device of claim 1, wherein the loopback module is further configured to determine whether the wavelength of the first detection light is available and return information of whether the wavelength of the first detection light is available to the controller;

the controller is further configured to control the transmitting module to transmit second detection light with the power of the first power to the optical cross-connect device after adjusting the wavelength when the wavelength of the first detection light is unavailable.

3. The apparatus according to claim 1, wherein the controller is further configured to determine whether the second power is within a preset range, and if the second power is not within the preset range, control the transmitting module to transmit a third detection light with a third power to the optical cross-connect apparatus, where the preset range is determined by the detection accuracy of the receiving module, and the third power is obtained by adjusting the first power according to a preset step size.

4. The apparatus of claim 1, wherein the optical cross-connect apparatus is an optical cross-matrix apparatus, the optical cross-matrix apparatus includes N slots, the transmit module, the receive module, and the loopback module are connected to the optical cross-matrix apparatus through at least one slot, and N is a positive integer greater than 1.

5. The apparatus according to claim 4, wherein the controller is configured to control the transmitting module to transmit the first detection light to a kth slot of the optical cross matrix apparatus, where K is a positive integer and is less than or equal to N;

the loopback module is further configured to return the first detection light to the receiving module at the kth slot;

the controller is further configured to determine a self-loop insertion loss measurement result of the kth slot according to the first power and the second power.

6. The insertion loss measuring device according to claim 4, wherein the loopback module at least includes a first loopback unit and a second loopback unit, the first loopback unit is connected with the Kth slot, the second loopback unit is connected with the Jth slot, and K and J are positive integers and less than or equal to N;

the controller is used for controlling the transmitting module to transmit the first detection light to the Kth slot position;

the first loopback unit is used for sending the first detection light from the Kth slot position to the J th slot position;

the second loopback cell is used for returning the first detection light to the receiving module;

the controller is further configured to determine an inter-board insertion loss measurement result between the kth slot and the jth slot according to the first power and the second power.

7. An insertion loss measurement method applied to an insertion loss measurement device, wherein the insertion loss measurement device includes a controller, a transmission module, a reception module, and a loopback module, and the transmission module, the reception module, and the loopback module are integrated on an optical cross-connect device, the method comprising:

controlling, by the controller, the transmitting module to transmit first detection light with a first power to the optical cross-connect device;

returning the first detection light transmitted by the optical cross-connect device to the receiving module by using the loopback module;

detecting the power of the returned first detection light by using the receiving module, and taking the detected power as a second power;

and determining an insertion loss measurement result of the optical cross-connect equipment according to the first power and the second power.

8. The method of claim 7, wherein after said controlling said transmitter module to transmit a first detected light having a first power to said optical cross-connect device with said controller, further comprising:

judging whether the wavelength of the first detection light is available by using the loopback module;

if the wavelength of the first detection light is not available, the controller is utilized to control the transmitting module to adjust the wavelength and then send second detection light with the power of the first power to the optical cross-connect equipment.

9. The method of claim 7, wherein after the detecting, by the receiving module, the power of the returned first detected light and using the detected power as a second power, the method further comprises:

judging whether the second power is within a preset range by using the controller;

and if the second power is not within a preset range, controlling the transmitting module to transmit third detection light with third power to the optical cross-connect equipment by using the controller, wherein the preset range is determined by the detection precision of the receiving module, and the third power is obtained by adjusting the first power according to a preset step length.

10. The insertion loss measuring method of claim 7, wherein the optical cross-connect device is an optical cross-matrix device, the optical cross-matrix device comprises N slots, the transmit module, the receive module, and the loopback module are connected to the optical cross-matrix device through at least one slot, and N is a positive integer greater than 1.

11. The method according to claim 10, wherein the controlling the transmitting module to transmit the first detection light with the first power to the optical cross-connect device by using the controller specifically comprises:

controlling the transmitting module to transmit the first detection light to a Kth slot position of the optical cross matrix equipment by using the controller, wherein K is a positive integer and is less than or equal to N;

the returning module is configured to return the first detection light transmitted by the optical cross connect device to the receiving module, specifically:

returning the first detection light to the receiving module at the Kth slot position by using the loopback module;

the determining an insertion loss measurement result of the optical cross-connect device according to the first power and the second power specifically includes:

and determining a self-loop insertion loss measurement result of the Kth slot position according to the first power and the second power by utilizing the controller.

12. The insertion loss measurement method according to claim 10, wherein the loopback module at least includes a first loopback unit and a second loopback unit, the first loopback unit is connected with the kth slot, the second loopback unit is connected with the jth slot, and K and J are positive integers and less than or equal to N;

the controlling, by the controller, the transmitting module to transmit the first detection light with the first power to the optical cross connect device specifically includes:

controlling the transmitting module to transmit the first detection light to the Kth slot position by using the controller;

the returning the first detection light transmitted by the optical cross-connect device to the receiving module by using the loopback module includes:

sending the first detection light from the Kth slot position to the J th slot position by using the first loopback unit;

returning the first detection light to the receiving module using the second loopback cell;

the determining an insertion loss measurement result of the optical cross-connect device according to the first power and the second power specifically includes:

and determining an inter-board insertion loss measurement result between the Kth slot position and the J th slot position according to the first power and the second power by using the controller.

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