CN102761365A - Method and device for detecting optical power - Google Patents

Abstract

The present invention provides a method and device for detecting optical power. The method includes: receiving an optical power notification message sent by the opposite end of the optical fiber, the optical power notification message carrying the status information of the optical power intensity received by the opposite end of the optical fiber ; Obtain the status of the optical power intensity received by the opposite end of the optical fiber according to the optical power notification message. According to the method and device for detecting optical power of the present invention, the optical fiber local end receives the optical power announcement message sent by the optical fiber opposite end, and obtains the optical power intensity status received by the optical fiber opposite end according to the optical power announcement message, so that the optical fiber The local end can also know the optical power received by the opposite end of the fiber.

Description

Method and device for detecting optical power

technical field

The invention relates to wireless communication technology, in particular to a method and device for detecting optical power.

Background technique

In optical network applications, the management of optical power in optical fibers is a very important technical content. For example, in optical fiber amplifiers, in order to ensure good detection characteristics of the system, it is usually required that the optical power transmitted in each communication channel be balanced.

Therefore, in the prior art, when installing an optical fiber, it is necessary to measure the receiving conditions of the optical power at both ends of the optical fiber, and adjust the optical attenuation accordingly. For example, when the optical power of the received optical signal is too high, the module will be burned out, and the optical attenuation needs to be increased at this time; when the optical power of the received optical signal is too low, the optical signal terminal or the bit error rate will increase. At this time, light decay needs to be reduced.

However, under normal circumstances, since the distance between the two ends of the optical fiber is relatively far, if measurements are made at both ends, it will undoubtedly greatly increase the cost of installation; if only one end is used for measurement, the optical power at the other end cannot be measured in time. The acquisition has brought inconvenience to the installation work. Therefore, in the prior art, there is no effective mechanism to obtain the power of the optical signal at the opposite end of the optical fiber, which is the power of the optical signal received at the opposite end of the optical fiber and sent by the optical fiber end.

Contents of the invention

The invention provides a method and device for detecting optical power to solve the situation in the prior art that the optical power at the opposite end of the optical fiber cannot be known at the local end of the optical fiber.

The first aspect of the present invention provides a method for detecting optical power, including:

receiving an optical power announcement message sent by the opposite end of the fiber, the optical power announcement message carrying the status information of the optical power intensity received by the opposite end of the optical fiber;

Acquiring the optical power intensity status received by the opposite end of the optical fiber according to the optical power notification message.

Another aspect of the present invention provides a device for detecting optical power, including:

A receiving module, configured to receive an optical power report message sent by the opposite end of the optical fiber, where the optical power report message carries status information of the optical power intensity received by the opposite end of the optical fiber;

An acquisition module, configured to acquire the status of the optical power intensity received by the opposite end of the optical fiber according to the optical power notification message.

It can be seen from the above technical solution that in the method and device for detecting optical power provided by the present invention, the optical fiber local end receives the optical power announcement message sent by the optical fiber opposite end, and obtains the optical power received by the optical fiber opposite end according to the optical power announcement message. Power intensity status, so that the local end of the fiber can also know the optical power received by the opposite end of the fiber.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1A is a schematic flowchart of a method for detecting optical power according to an embodiment of the present invention;

FIG. 1B is a schematic flowchart of a method for detecting optical power according to another embodiment of the present invention

2 is a schematic flowchart of a method for detecting optical power according to yet another embodiment of the present invention;

3 is a schematic structural diagram of a device for detecting optical power according to another embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an apparatus for detecting optical power according to yet another embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for detecting optical power, as shown in FIG. 1A, including:

100. Receive an optical power notification message sent by the opposite end of the optical fiber. Wherein, the optical power announcement message carries the status information of the optical power intensity received by the opposite end of the optical fiber.

Wherein, the optical power intensity status information received by the opposite end of the optical fiber may be information describing the nature of the optical power intensity, for example, the optical power intensity received by the opposite end of the optical fiber is too large, normal or too small; The received optical power status information may also be information describing the value of the optical power intensity, for example, the magnitude of the optical power received by the opposite end of the optical fiber, the magnitude of the preset optical power received by the opposite end of the optical fiber, and the like.

In the embodiment of the present invention, a device for detecting optical power may be provided at the end of the optical fiber, and optionally, the device for detecting optical power may be integrated in a laser.

101. Obtain the status of the optical power intensity received by the opposite end of the optical fiber according to the above optical power notification message.

In the method for detecting optical power in this embodiment, the optical fiber opposite end can carry the received optical power intensity status information in the optical power notification message and send it to the optical fiber local end, and the optical fiber local end can obtain the optical fiber pair In this way, the local end of the fiber can also know the status of the optical power received by the opposite end of the fiber.

Optionally, as shown in Figure 1B, the method for detecting optical power further includes:

102. Display the state of the received optical power at the opposite end of the optical fiber according to the state of the received optical power at the opposite end of the optical fiber obtained in step 101.

Optionally, an indicator light can be set at the local end of the optical fiber to indicate that the optical power intensity received by the opposite end of the optical fiber is too high, normal or too low, etc. with different colors. For example, when the indicator light is red, it means that the optical power received by the opposite end of the fiber is too high; when the indicator is green, it means that the optical power received by the opposite end of the fiber is normal; when the indicator is blue, it means The optical power intensity received by the opposite end of the fiber is too low.

For another example, when the indicator light is always green, it means that the optical power intensity received by the opposite end of the fiber is normal; when the indicator light is off, there may be a problem with the fiber contact; The intensity is too high; when the indicator light is steady orange, it means that the optical power intensity received by the opposite end of the fiber is too low.

For another example, a display screen can be set at the end of the optical fiber, and the words "optical power intensity: high", "optical power intensity: low", "optical power intensity: normal" and so on can be displayed on the display screen to indicate the optical fiber opposite end Received optical power intensity status.

Optionally, a digital or pointer display screen can also be set at the end of the optical fiber to display the value of the optical power received at the opposite end of the optical fiber.

Further optionally, as shown in FIG. 1B, the method for detecting optical power further includes:

103. Adjust the optical attenuation according to the received optical power intensity state at the opposite end of the optical fiber obtained in 101.

Optionally, when it is found that the optical power received by the opposite end of the optical fiber is too high or too low, the optical attenuation of the local end of the optical fiber is adjusted according to the state of the optical power intensity, so that the optical power received by the opposite end of the optical fiber tends to be normal. For example, when the optical power received by the opposite end of the fiber is too large, increase the optical attenuation of the end of the fiber to reduce the optical power of the optical signal sent to the opposite end of the fiber; when the optical power received by the opposite end of the fiber is small, reduce Optical attenuation at the local end of the fiber to increase the optical power of the optical signal sent to the opposite end of the fiber.

It should be pointed out that 102 and 103 are in no order, that is, 103 may be in front of 102, and FIG. 1B only shows one of the cases.

Another embodiment of the present invention provides a method for detecting optical power based on the foregoing embodiments. As shown in Figure 2, including:

201. Receive and parse an optical power notification message sent by an optical fiber peer end.

Optionally, when the interface at the fiber end is an SDH (Synchronous Digital Hierarchy) interface, receive the optical power encapsulated in the PPP (Point-to-Point Protocol) message format sent by the fiber peer end notification message;

When the interface at the local end of the fiber is an Ethernet interface, it receives the optical power notification message encapsulated in the slow protocol message format sent by the opposite end of the fiber.

When the optical power notification message is encapsulated in the PPP message format, it can be in the format shown in Table 1:

Table 1

The Flag field is the start and end flag of the PPP data frame, usually 1 byte (Byte), its value can be 0x7e, the Address field is the address field, usually 1 byte, its value can be 0xff, Control The field is the control field, usually 1 byte, and its value can be 0x03. The Protocol field indicates the protocol type, usually 2 bytes, and its value can be 0xce05. The Type field distinguishes the specific message type, usually 20 Byte, for the optical power report message, it can be Type=("Light PowerSearch"), the Information field carries the specific message content to be sent, usually 8 bytes, for the optical power report message, the receiving end of the optical fiber The optical power status is placed in this field. The meaning of each byte of this field is shown in Table 2. The FCS (Frame Check Sequence, frame check sequence) field indicates the FCS check information, usually 2 bytes.

Table 2

Among them, the Type field in Table 2 is a more specific message type, usually 1 byte, and its value can be 0x01, and the Version field is the version number, usually 1 byte, and its value can be 0x01, Length The byte is the length, usually 2 bytes, and its value can be 0x0004. The Power field is the state of optical power intensity, usually 1 byte. When the value is 0x0, it means that the state of optical power intensity is normal, and its value is 0x1 When the value is 0x2, it means that the optical power intensity is too low. When the value is 0x3, it means that the optical power intensity is no light. Padding is a padding field, usually 3 bytes. Its value can be 0x000000.

When the optical power notification message is encapsulated in the slow protocol message format, it can be in the format shown in Table 3:

table 3

The DA field is a reserved multicast MAC address, which is used to identify slow protocol packets, usually 6 bytes, and its value can be 01-80-C2-00-00-02, and the SA field indicates the source port MAC Address, usually 6 bytes, the Type field is fixed at 0x8809 to indicate the slow protocol message, SubType distinguishes different slow protocol messages, usually 1 byte, where SubType=0xFF indicates the optical power indication message, and the Flag field It is usually 4 bytes, and its value can be 0XFEFE0002. The Information field carries the specific message content to be sent, usually 8 bytes. For the optical power notification message, the received optical power status of the fiber end is placed in this field Inside, the meaning of each byte of this field is shown in Table 2, and the CRC (Cyclic Redundancy Check, cyclic redundancy check code) field represents CRC check information, usually 4 bytes.

202. Obtain the status of the optical power intensity received by the opposite end of the optical fiber according to a preset field in the optical power notification message.

In actual application, the preset field in the optical power notification message can be set according to actual needs to represent the state of the optical power intensity received by the opposite end of the optical fiber. The state of the optical power intensity may specifically be as follows: the received optical power is normal, the received optical power is too high, the received optical power is too low, and no optical signal is received.

203. Display the optical power intensity status received by the opposite end of the optical fiber on the display at the optical fiber local end according to the optical power information.

After receiving the optical power information, the device for detecting optical power at the local end of the optical fiber obtains the status of the optical power intensity from the corresponding field, and displays it on the display at the local end of the optical power. The display can be integrated on the device for detecting optical power. It can also be set individually.

Optionally, also include:

204. Adjust the optical attenuation according to the state of the optical power intensity received by the opposite end of the optical fiber acquired in 203.

It should be noted that there is no sequence between 203 and 204, that is, 204 may be before 203, and FIG. 2 only shows one case.

According to the method for detecting optical power of this embodiment, the optical power intensity state of the opposite end of the optical fiber is displayed by a display, so that the optical attenuation of the optical fiber end can be adjusted, and the optical intensity of the opposite end of the optical fiber can be seen in real time, which can effectively The optical power reception status at both ends of the optical fiber is detected to optimize the performance of the entire optical fiber, and this method can greatly facilitate the operation of the staff.

Another embodiment of the present invention provides a device for detecting optical power, which is used to implement the device for detecting optical power in the above embodiments.

As shown in FIG. 3 , the device for detecting power includes a receiving module 301 and an acquiring module 302 .

Wherein, the receiving module 301 is used to receive the optical power announcement message sent by the opposite end of the optical fiber, and the optical power announcement message carries the optical power intensity status information received by the opposite end of the optical fiber; the acquisition module 302 is connected to the receiving module 301 , configured to obtain the status of the optical power intensity received by the opposite end of the optical fiber according to the optical power notification message.

In an optional embodiment, more specifically, the receiving module 301 is configured to receive and analyze the optical power notification message sent by the opposite end of the fiber, as follows:

When the interface of the optical fiber local end is an SDH interface, receiving and analyzing the optical power notification message encapsulated in the PPP message format sent by the optical fiber opposite end;

When the interface of the optical fiber local end is an Ethernet interface, receive and analyze the optical power notification message encapsulated in the slow protocol message format sent by the optical fiber opposite end.

The specific operation method of the device for detecting optical power is consistent with the above-mentioned embodiment, and will not be repeated here.

In the device for detecting optical power in this embodiment, the opposite end of the optical fiber carries the received optical power information in the optical power notification message, and sends it to the device for detecting optical power at the local end of the optical fiber, and the device for detecting optical power at the local end of the optical fiber The state of the optical power intensity received by the opposite end of the fiber can be obtained according to the optical power notification message, so that the local end of the optical fiber can also know the situation of the optical power of the opposite end of the fiber. The device is arranged at any one or both ends of the optical fiber, which can greatly facilitate the operation of the staff.

Optionally, as shown in FIG. 4 , the device for detecting optical power further includes a display module 303 connected to the acquisition module 302 for displaying the status of the optical power intensity received by the opposite end of the optical fiber.

Optionally, as shown in FIG. 4, the device for detecting optical power further includes an adjustment module 304, which is connected to the acquisition module 302, and is used to adjust the optical power according to the state of the optical power intensity received by the opposite end of the optical fiber decline.

It should be noted that the device for detecting optical power may have one or both of the display module 303 and the adjustment module 304 .

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A method for detecting optical power, characterized in that, comprising: receiving an optical power announcement message sent by the opposite end of the fiber, the optical power announcement message carrying the status information of the optical power intensity received by the opposite end of the optical fiber; Acquiring the optical power intensity status received by the opposite end of the optical fiber according to the optical power notification message. 2. The method according to claim 1, further comprising: According to the state of the optical power intensity received by the opposite end of the optical fiber, the state of the optical power intensity received by the opposite end of the optical fiber is displayed. 3. The method according to claim 1 or 2, further comprising: The optical attenuation is adjusted according to the state of the optical power intensity received by the opposite end of the optical fiber. 4. The method according to any one of claims 1-3, characterized in that, When the interface at the optical fiber local end is an SDH interface, the optical power notification message is encapsulated in a PPP message format; When the interface at the local end of the optical fiber is an Ethernet interface, the optical power notification message is encapsulated in a slow protocol message format. 5. A device for detecting optical power, comprising: A receiving module, configured to receive an optical power report message sent by the opposite end of the optical fiber, where the optical power report message carries status information of the optical power intensity received by the opposite end of the optical fiber; An acquisition module, configured to acquire the optical power intensity status of the opposite end of the optical fiber according to the optical power notification message. 6. The device according to claim 5, further comprising: The display module is used to display the state of the optical power intensity received by the opposite end of the optical fiber. 7. The device according to claim 5 or 6, further comprising: The adjustment module is configured to adjust the optical attenuation according to the state of the optical power intensity received by the opposite end of the optical fiber.

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