CN108833001A - An Optical Fiber Code Recognition System Based on Tunable Light Source - Google Patents

Abstract

The invention provides an optical fiber code identification system based on a tunable light source, which comprises at least one tunable broadband light source, a first high-speed optical switch, a circulator, a second high-speed optical switch, an optical detection module, an optical cable, an optical fiber code and a data processing module.

Description

An Optical Fiber Code Recognition System Based on Tunable Light Source

technical field

The invention belongs to the technical field of optical fiber code identification and relates to an optical fiber code identification system based on a tunable light source.

Background technique

In the existing technology, optical fiber identification mainly uses a third-party medium—electronic label to identify the optical fiber. The existing domestic market is mainly dominated by Huawei IODN, which already has a number of domestic and foreign standards. The method is mainly in the optical fiber distribution panel. Embed the electronic tag reader and put the electronic tag ring on the optical fiber jumper to realize the identification of the optical cable. This technology has a serious defect that must use a third-party medium. The electronic tags at both ends of the optical fiber jumper must be paired and Must not come off, and this just has a strong impact on the use of this technology.

For example, in the patent application with the application number CN201210207967.8, it stores the associated fiber jumper configuration information in the port by setting the port ID in the iODF device, and when the fiber jumper is correct, the information associated with the port ID is the same as the When the information carried by the adapter card set on the socket is consistent, it indicates that the port is correct. This solution realizes the correct identification of the optical fiber by setting an additional physical device in the port, thereby ensuring the correctness of port matching. Another example is the patent application with the application number CN200910002203.3, which controls the temperature of the SSFBG in the optical fiber by setting SSFBG, heating modules, temperature sensors, and temperature controllers in the optical fiber network to change its reflection wavelength. In order to realize the coding of the optical fiber, and in this way, the temperature control needs to be very precise, otherwise coding errors will inevitably occur, or the problem of not being able to effectively identify the code, in practical applications, the sealing of the device and the stability of the application environment It has very high requirements and cannot meet the requirements for the use of optical fiber networks at this stage.

Based on the above-mentioned problems existing in the prior art, a method for identifying an optical cable from the nature of the optical cable is needed. The present invention improves the prior art under this technical background.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides an optical fiber code identification system based on a tunable light source, which uses the optical cable itself as the identification medium without affecting signal propagation, so as to overcome the deficiencies of the prior art. Specifically, the present invention provides the following technical solutions.

An optical fiber code recognition system based on a tunable light source, including a tunable broadband light source, a first high-speed optical switch, a circulator, a second high-speed optical switch, an optical detection module, an optical cable, an optical fiber code, and a data processing module;

Wherein, the tunable broadband light source is connected to the first high-speed optical switch, the light source is input into the first high-speed optical switch, and then the light wave is input into the optical cable through the circulator;

Among them, the optical fiber code will strongly retroreflect the light wave corresponding to the coded wavelength;

Among them, the light wave is reflected by the optical fiber code in the optical cable, and then enters the optical detection module after passing through the circulator and the second high-speed optical switch, and is detected by the optical detection module;

Among them, the data processing module is respectively connected with the tunable broadband light source, the first high-speed optical switch, the circulator, the second high-speed optical switch, and the optical detection module to realize its management and control and receive the information detected by the optical detection module.

Further, the tunable broadband light source outputs full-band light waves, and the first high-speed optical switch and the second high-speed optical switch cooperate with each other to switch, so that all optical fiber code reflections in the optical cable are collected by the optical detection module;

Wherein, the first high-speed optical switch and the second high-speed optical switch cooperate with each other to realize the passage of light waves in a specific period of time, and the switching time difference between the two is the length of the optical cable where the light waves collected by the optical detection module through the second high-speed optical switch are located;

Wherein, the data processing module uses the first high-speed optical switch and the second high-speed optical switch to cooperate with each other to detect the optical cable section by section, and confirm the optical fiber code reflection in each section of the optical cable and the corresponding length of the optical cable.

Further, the data processing module reflects the length of the corresponding optical cable according to all the optical fiber codes in the optical cable, and conducts a fixed-point test of the mutual cooperation between the first high-speed optical switch and the second high-speed optical switch for each optical fiber code reflection point, and at the same time, the tunable broadband light source performs wavelength-by-wavelength testing. Identify, and finally realize that the optical fiber coded wavelength of the measured position is identified;

Wherein, the tunable broadband light source inputs light waves to the first high-speed optical switch wavelength by wavelength, the first high-speed optical switch is turned on for a fixed period of time and then turned off, the data processing module calculates the time required for light to and fro transmission according to the length of the optical fiber code reflection point, and calculates this time As a time point for delaying the opening of the second high-speed optical switch;

Among them, the optical fiber code only reflects light waves of the same wavelength, and the tunable broadband light source detects wavelength by wavelength. When the detected wavelength is the same as the optical fiber code, the optical fiber code will reflect the wavelength back to the optical detection module. The processing module regards the wavelength as the wavelength code of the optical fiber code, and at the same time matches the energy value collected by the optical detection module and the length of the optical cable as information of the optical fiber code.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

1. It can effectively identify the codes of different sections of optical fibers in a single optical cable, and the identification accuracy is high, and the corresponding optical cable information can be automatically identified, which greatly improves the identification accuracy;

2. There is no need to add additional third-party identification equipment, and the cost is greatly saved while effectively improving the identification accuracy.

Description of drawings

Fig. 1 is a schematic structural diagram of an optical fiber code recognition system based on a tunable light source in the present invention;

Fig. 2 is a schematic diagram of the optical fiber encoding structure of an optical fiber encoding identification system based on a tunable light source according to the present invention.

in:

The labels in Figure 1 are:

1-tunable broadband light source, 2-first high-speed optical switch, 3-circulator, 4-second high-speed optical switch, 5-optical detection module, 6-optical cable, 7-optical fiber encoding, 8-data processing module.

The labels in Figure 2 are:

71-optical fiber, 72-grating.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. Those skilled in the art should know that the following specific embodiments or specific implementation methods are a series of optimized configurations listed by the present invention to further explain the specific content of the invention, and these configurations can be combined with each other or used in association with each other, unless it is clearly stated in the present invention that some or a specific embodiment or implementation cannot be associated with or used in conjunction with other embodiments or implementations. At the same time, the following specific examples or implementation methods are only used as optimized configurations, and are not understood as limiting the protection scope of the present invention.

The preferred implementation modes of the present invention will be described in detail below through various specific examples. The specific parameter values involved in the specific examples below are only used as examples to facilitate the explanation of the embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Embodiment one:

As shown in Figures 1 and 2, an optical fiber code recognition system based on a tunable light source, the system includes a tunable broadband light source 1, a first high-speed optical switch 2, a circulator 3, a second high-speed optical switch 4, and an optical detector Module 5, optical cable 6, optical fiber code 7, data processing module 8;

Among them, the tunable broadband light source 1 is connected to the first high-speed optical switch 2, and the light source is input into the first high-speed optical switch 2, and then the light wave is input into the optical cable 6 through the circulator 3;

Among them, the optical fiber code 7 will strongly retroreflect the light wave corresponding to the coded wavelength;

Wherein, the light wave is reflected by the optical fiber code 7 in the optical cable 6, and then enters the optical detection module 5 after passing through the circulator 3 and the second high-speed optical switch 4, and is detected by the optical detection module 5;

Among them, the data processing module 8 is respectively connected with the tunable broadband light source 1, the first high-speed optical switch 2, the circulator 3, the second high-speed optical switch 4, and the optical detection module 5, so as to realize its management and control and receive the optical detection module 5 detected information.

Since firstly, a kind of optical fiber code identification system based on tunable light source, said system includes tunable broadband light source, first high-speed optical switch, circulator, second high-speed optical switch, optical detection module, optical cable, optical fiber code, data processing module;

Wherein, the tunable broadband light source is connected to the first high-speed optical switch, the light source is input into the first high-speed optical switch, and then the light wave is input into the optical cable through the circulator;

Among them, the optical fiber code will strongly retroreflect the light wave corresponding to the coded wavelength;

Among them, the light wave is reflected by the optical fiber code in the optical cable, and then enters the optical detection module after passing through the circulator and the second high-speed optical switch, and is detected by the optical detection module;

Among them, the data processing module is respectively connected with the tunable broadband light source, the first high-speed optical switch, the circulator, the second high-speed optical switch, and the optical detection module to realize its management and control and receive the information detected by the optical detection module.

As described above, the tunable broadband light source outputs full-band light waves, and the first high-speed optical switch and the second high-speed optical switch cooperate with each other to switch, so that all optical fiber code reflections in the optical cable are collected by the optical detection module;

Embodiment two:

As shown in Figures 1 and 2, an optical fiber code recognition system based on a tunable light source, the system includes a tunable broadband light source 1, a first high-speed optical switch 2, a circulator 3, a second high-speed optical switch 4, and an optical detector Module 5, optical cable 6, optical fiber code 7, data processing module 8;

Among them, the tunable broadband light source 1 is connected to the first high-speed optical switch 2, and the light source is input into the first high-speed optical switch 2, and then the light wave is input into the optical cable 6 through the circulator 3;

Among them, the optical fiber code 7 will strongly retroreflect the light wave corresponding to the coded wavelength;

Wherein, the light wave is reflected by the optical fiber code 7 in the optical cable 6, and then enters the optical detection module 5 after passing through the circulator 3 and the second high-speed optical switch 4, and is detected by the optical detection module 5;

Among them, the data processing module 8 is respectively connected with the tunable broadband light source 1, the first high-speed optical switch 2, the circulator 3, the second high-speed optical switch 4, and the optical detection module 5, so as to realize its management and control and receive the optical detection module 5 detected information.

The tunable broadband light source 1 outputs full-band light waves, and the first high-speed optical switch 2 and the second high-speed optical switch 4 cooperate with each other to switch, so that the reflections of all optical fiber codes 7 in the optical cable 6 are collected by the optical detection module 5;

Among them, the first high-speed optical switch 2 and the second high-speed optical switch 4 cooperate with each other to realize the passage of light waves in a specific period of time. The length of optical cable 6;

Among them, the data processing module 8 uses the first high-speed optical switch 2 and the second high-speed optical switch 4 to cooperate with each other to detect the optical cable 6 section by section, and confirm the reflection of the optical fiber code 7 in each section of the optical cable 6 and the corresponding length of the optical cable 6 .

Since the tunable broadband light source outputs full-band light waves, the high-speed optical switch 1 and the high-speed optical switch 2 cooperate with each other to switch, so that all the optical fiber code reflections in the optical cable are collected by the optical detection module;

Among them, the high-speed optical switch 1 and the high-speed optical switch 2 cooperate with each other to realize the passage of light waves in a specific period of time, and the switching time difference between the two is the length of the optical cable where the light waves collected by the optical detection module through the high-speed optical switch 2 are located;

Among them, the data processing module uses the high-speed optical switch 1 and the high-speed optical switch 2 to cooperate with each other to detect the optical cable section by section, and confirm the optical fiber code reflection in each section of the optical cable and the corresponding optical cable length.

Embodiment three:

As shown in Figures 1 and 2, an optical fiber code recognition system based on a tunable light source, the system includes a tunable broadband light source 1, a first high-speed optical switch 2, a circulator 3, a second high-speed optical switch 4, and an optical detector Module 5, optical cable 6, optical fiber code 7, data processing module 8;

Among them, the tunable broadband light source 1 is connected to the first high-speed optical switch 2, and the light source is input into the first high-speed optical switch 2, and then the light wave is input into the optical cable 6 through the circulator 3;

Among them, the optical fiber code 7 will strongly retroreflect the light wave corresponding to the coded wavelength;

Wherein, the light wave is reflected by the optical fiber code 7 in the optical cable 6, and then enters the optical detection module 5 after passing through the circulator 3 and the second high-speed optical switch 4, and is detected by the optical detection module 5;

Among them, the data processing module 8 is respectively connected with the tunable broadband light source 1, the first high-speed optical switch 2, the circulator 3, the second high-speed optical switch 4, and the optical detection module 5, so as to realize its management and control and receive the optical detection module 5 detected information.

The tunable broadband light source 1 outputs full-band light waves, and the first high-speed optical switch 2 and the second high-speed optical switch 4 cooperate with each other to switch, so that the reflections of all optical fiber codes 7 in the optical cable 6 are collected by the optical detection module 5;

Among them, the first high-speed optical switch 2 and the second high-speed optical switch 4 cooperate with each other to realize the passage of light waves in a specific period of time. The length of optical cable 6;

Among them, the data processing module 8 uses the first high-speed optical switch 2 and the second high-speed optical switch 4 to cooperate with each other to detect the optical cable 6 section by section, and confirm the reflection of the optical fiber code 7 in each section of the optical cable 6 and the corresponding length of the optical cable 6 .

The data processing module 8 reflects the length of the corresponding optical cable 6 according to all the optical fiber codes 7 in the optical cable 6, and performs a fixed-point test of the mutual cooperation between the first high-speed optical switch 2 and the second high-speed optical switch 4 for each reflection point of the optical fiber code 7, and can be tuned at the same time The broadband light source 1 is identified wavelength by wavelength, and finally the wavelength of the optical fiber code 7 at the measured position is identified;

Among them, the tunable broadband light source 1 inputs light waves to the first high-speed optical switch 2 wavelength by wavelength, the first high-speed optical switch 2 is turned on for a fixed period of time and then turned off, and the data processing module 8 calculates the light required for round-trip transmission according to the length of the reflection point of the optical fiber code 7 time, this time is used as the time point when the second high-speed optical switch 4 is delayed to be turned on;

Among them, the optical fiber code 7 only reflects light waves of the same wavelength, and the tunable broadband light source 1 detects wavelength by wavelength. When the detected wavelength is the same as the optical fiber code 7, the optical fiber code 7 will reflect the wavelength back to the optical detection module 5. 5 collection, so that the data processing module 8 uses the wavelength as the wavelength code of the optical fiber code 7, and at the same time matches the energy value collected by the optical detection module 5 and the length of the optical cable 6 as the information of the optical fiber code 7.

Since the data processing module reflects the length of the corresponding optical cable according to all the optical fiber codes in the optical cable, it performs a fixed-point test of the high-speed optical switch 1 and the high-speed optical switch 2 for each optical fiber code reflection point, and at the same time, the tunable broadband light source is identified wavelength by wavelength. , and finally realize that the fiber coded wavelength of the measured position is identified;

Among them, the tunable broadband light source inputs light waves to the high-speed optical switch 1 wavelength by wavelength, and the high-speed optical switch 1 is turned on for a fixed period of time and then turned off. The time point at which the optical switch 2 is turned on is delayed;

Among them, the optical fiber code only reflects light waves of the same wavelength, and the tunable broadband light source detects wavelength by wavelength. When the detected wavelength is the same as the optical fiber code, the optical fiber code will reflect the wavelength back to the optical detection module. The processing module regards the wavelength as the wavelength code of the optical fiber code, and at the same time matches the energy value collected by the optical detection module and the length of the optical cable as information of the optical fiber code.

Claims (3)

1. An optical fiber code recognition system based on a tunable light source, characterized in that it includes a tunable broadband light source, a first high-speed optical switch, a circulator, a second high-speed optical switch, an optical detection module, an optical cable, an optical fiber code, and data processing module; Wherein, the tunable broadband light source is connected to the first high-speed optical switch, the light source is input into the first high-speed optical switch, and then the light wave is input into the optical cable through the circulator; Among them, the optical fiber code will strongly retroreflect the light wave corresponding to the coded wavelength; Among them, the light wave is reflected by the optical fiber code in the optical cable, and then enters the optical detection module after passing through the circulator and the second high-speed optical switch, and is detected by the optical detection module; Among them, the data processing module is respectively connected with the tunable broadband light source, the first high-speed optical switch, the circulator, the second high-speed optical switch, and the optical detection module to realize its management and control and receive the information detected by the optical detection module. 2. The optical fiber code recognition system based on tunable light source according to claim 1, characterized in that: the tunable broadband light source outputs full-band light waves, and the first high-speed optical switch and the second high-speed optical switch cooperate with each other to realize All optical fiber coded reflections in the optical cable are collected by the optical detection module; Wherein, the first high-speed optical switch and the second high-speed optical switch cooperate with each other to realize the passage of light waves in a specific period of time, and the switching time difference between the two is the length of the optical cable where the light waves collected by the optical detection module through the second high-speed optical switch are located; Wherein, the data processing module uses the first high-speed optical switch and the second high-speed optical switch to cooperate with each other to detect the optical cable section by section, and confirm the optical fiber code reflection in each section of the optical cable and the corresponding length of the optical cable. 3. A fiber code recognition system based on a tunable light source according to claim 1, characterized in that: the data processing module performs the first high-speed operation on each fiber code reflection point according to the length of the corresponding optical cable reflected by all the fiber codes in the cable. The optical switch and the second high-speed optical switch cooperate with each other in the fixed-point test of the switch, and at the same time, the tunable broadband light source is identified wavelength by wavelength, and finally the optical fiber coded wavelength at the measured position is identified; Wherein, the tunable broadband light source inputs light waves to the first high-speed optical switch wavelength by wavelength, the first high-speed optical switch is turned on for a fixed period of time and then turned off, the data processing module calculates the time required for light to and fro transmission according to the length of the optical fiber code reflection point, and calculates this time As a time point for delaying the opening of the second high-speed optical switch; Among them, the optical fiber code only reflects light waves of the same wavelength, and the tunable broadband light source detects wavelength by wavelength. When the detected wavelength is the same as the optical fiber code, the optical fiber code will reflect the wavelength back to the optical detection module. The processing module regards the wavelength as the wavelength code of the optical fiber code, and at the same time matches the energy value collected by the optical detection module and the length of the optical cable as information of the optical fiber code.