Optical fiber distribution panel capable of identifying fiber core and short-distance communication system

Abstract

The present invention discloses an optical fiber distribution panel and a short-distance communication system capable of identifying a fiber core. The optical fiber distribution panel comprises: a distribution panel body; an adapter module, which is composed of a plurality of adapters arranged and has a port for users to insert jumper fibers; a plurality of groups of optical fibers and communication optical fibers in the panel, wherein the communication optical fibers are provided with uniquely identifiable optical fiber codes, and the optical fiber codes on different communication optical fibers have the same central wavelength and different intervals; a plurality of wavelength division multiplexers, and the distances between different wavelength division multiplexers and the optical fiber codes on the corresponding communication optical fibers are kept different; and a code identification detection device, which is respectively connected to a plurality of wavelength division multiplexers to identify the optical fiber codes on the communication optical fibers. This scheme utilizes the optically identifiable characteristics of the optical fiber code to realize the unique identification of the distribution panel fiber core, while taking into account the reduction of cost. For this purpose, a method of realizing optical fiber coding with the same central wavelength and different intervals is adopted to reduce the cost of the optical fiber code identification module.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber communication, and in particular to an optical fiber distribution tray capable of identifying optical fiber cores and a short-distance communication system. Background Art

[0002] Fiber optic distribution trays are widely used in the field of fiber optic communications. Traditional fiber optic distribution trays cannot automatically realize the unique identification of fiber cores and rely on manual detection, which is costly and inefficient. Therefore, a simple and low-cost solution is needed to realize the unique identification of fiber cores in fiber optic distribution trays. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an optical fiber distribution tray capable of identifying the fiber core, which can simultaneously realize optical fiber coding replication and measurement in one system, thereby improving work efficiency and saving manpower and material costs.

[0004] According to an embodiment of the first aspect of the present invention, a fiber core identifiable optical fiber distribution panel comprises: a distribution panel body; and an adapter module arranged in the distribution panel body, which is composed of a plurality of adapters arranged and has a port for a user to insert a jumper fiber; a plurality of groups of optical fibers in the panel and communication optical fibers, the number of the optical fibers in the panel and the communication optical fibers is consistent with that of the adapters, one end of the optical fibers in the panel is connected to the adapter in a one-to-one correspondence, a uniquely identifiable optical fiber code is provided on the communication optical fiber, and the central wavelengths of the optical fiber codes on different communication optical fibers are the same and the intervals are different; a plurality of wavelength division multiplexers, the number of which is consistent with that of the adapters, the other end of the optical fiber in the panel and the communication optical fiber are both connected to the wavelength division multiplexers in a one-to-one correspondence, and the distances between different wavelength division multiplexers and the optical fiber codes on the corresponding communication optical fibers are kept different; a code identification detection device, which is respectively connected to the plurality of wavelength division multiplexers for identifying the optical fiber codes on the communication optical fibers.

[0005] According to the first aspect of the present invention, a fiber core identifiable optical fiber distribution panel has at least the following beneficial effects: the present solution utilizes the optically identifiable characteristics of optical fiber coding to realize the unique identification of the fiber core of the distribution panel, while taking into account the reduction of costs. For this purpose, a method of realizing optical fiber coding with different intervals at the same central wavelength is adopted to reduce the cost of the optical fiber coding identification module (the optical fiber coding identification module only needs one light source, and only one wavelength needs to be considered for collection). At the same time, the cost of processing optical fiber coding with different intervals at the same central wavelength is relatively low.

[0006] According to some embodiments of the first aspect of the present invention, the coding identification detection device includes a high-speed main control module, a narrow-band pulse light source, a circulator, a coupler, and a high-speed photoelectric conversion module. The high-speed main control module, narrow-band pulse light source, circulator, and coupler are connected in sequence, the input optical wave end of the circulator is connected to the high-speed main control module through the high-speed photoelectric conversion module, and the coupler is connected to the multiple wavelength division multiplexers through different optical fibers.

[0007] According to some embodiments of the first aspect of the present invention, the coupler is a splitter.

[0008] According to some embodiments of the first aspect of the present invention, the plurality of adapters are all provided with a control chip and a touch switch and an indicator light respectively connected to the control chip, and the control chip is connected to the coding identification detection device.

[0009] According to some embodiments of the first aspect of the present invention, the fiber coding is composed of a plurality of fiber gratings with the same central wavelength, which are spaced apart by n*k, where n is an integer from 1 to 9.

[0010] According to some embodiments of the first aspect of the present invention, a protective box is provided on the outside of the communication optical fiber corresponding to the optical fiber coding position.

[0011] A short-distance communication system according to an embodiment of the second aspect of the present invention comprises two of the above-mentioned optical fiber distribution panels, and the two optical fiber distribution panels are connected to the communication optical fibers on opposite sides via optical cables.

[0012] A short-distance communication system according to an embodiment of the second aspect of the present invention has at least the following beneficial effects: this scheme utilizes the optically identifiable characteristics of optical fiber coding to achieve unique identification of the fiber core of a distribution panel, while taking into account cost reduction. To this end, a method of realizing optical fiber coding at different intervals with the same central wavelength is adopted to reduce the cost of the optical fiber coding identification module. The unique identification of the fiber core of a distribution panel can facilitate the formation of a complete communication link between two optical fiber distribution panels, thereby achieving efficient and accurate communication.

[0013] According to some embodiments of the second aspect of the present invention, the code identification detection device controls the output optical fiber code identification light waves and optical data communication light waves to use different pulse widths.

[0014] According to some embodiments of the second aspect of the present invention, the optical fiber coding identification light wave, the optical data communication light wave and the central wavelength of the user communication light wave of the user access jump fiber are inconsistent.

[0015] According to some embodiments of the second aspect of the present invention, the coding identification detection device simultaneously identifies the fiber coding of the opposite communication optical fiber, and indicates on the adapter according to the identified fiber coding status of the opposite communication optical fiber.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of an optical fiber distribution panel according to an embodiment of the first aspect of the present invention;

[0019] Figure 2 A schematic diagram of optical fiber coding according to an embodiment of the first aspect of the present invention;

[0020] Figure 3 It is a schematic diagram of a coding recognition detection device according to an embodiment of the first aspect of the present invention;

[0021] Figure 4 A schematic diagram of optical fiber coding identification according to an embodiment of the first aspect of the present invention;

[0022] Figure 5 A schematic diagram of an adapter module according to an embodiment of the first aspect of the present invention;

[0023] Figure 6 A schematic diagram of a short-distance communication system according to an embodiment of the second aspect of the present invention;

[0024] Figure 7 This is a schematic diagram of short-distance communication according to an embodiment of the second aspect of the present invention. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] refer to Figure 1 As shown, a fiber core identifiable optical fiber distribution tray according to the first aspect of the embodiment of the technical solution includes:

[0029] A wiring tray body 100; and a wiring tray body 100 disposed in the wiring tray body 100

[0030] The adapter module 200 is composed of a plurality of adapters 210 arranged in an array and has a port for users to insert jumper fibers;

[0031] A plurality of groups of optical fibers 300 and communication optical fibers 400 in the disk, wherein the number of the optical fibers 300 and the communication optical fibers 400 in the disk is consistent with the adapter 210, one end of the optical fibers 300 in the disk is connected to the adapter 210 in a one-to-one correspondence, and a uniquely identifiable optical fiber code 410 is provided on the communication optical fiber 400, and the central wavelengths of the optical fiber codes on different communication optical fibers 400 are the same and the intervals are different, such as Figure 2 As shown;

[0032] Multiple wavelength division multiplexers 500, the number of which is consistent with that of the adapter 210, the other end of the optical fiber 300 in the disk and the communication optical fiber 400 are connected to the wavelength division multiplexers 500 in a one-to-one correspondence, and the distances between different wavelength division multiplexers 500 and the optical fiber codes on the corresponding communication optical fibers 400 are kept different; the wavelength division multiplexer 500 is used to achieve the coupling of optical paths of different wavelengths, and an optical splitter can also be used here, but the optical splitter will reduce the energy of the user communication optical wave access port, so it is preferred that the wavelength division multiplexer 500 realizes the coupling of the user communication optical wave and the optical wave of the coding identification monitoring device;

[0033] The code identification and detection device 600 is connected to the plurality of wavelength division multiplexers 500 respectively to identify the fiber code 410 on the communication optical fiber 400 .

[0034] Based on the above structure, the coding identification detection device 600 of this solution controls the emission of optical fiber coding identification light waves, which are acted on the optical fiber coding by the wavelength division multiplexer 500 and the communication optical fiber 400, and part of the light waves are reflected by the optical fiber coding, and are returned from the communication optical fiber 400 and the wavelength division multiplexer 500 to the coding identification detection device 600 for optical fiber coding identification. The optically identifiable characteristics of the optical fiber coding are used to realize the unique identification of the fiber core of the distribution board, while taking into account the reduction of costs. For this purpose, the method of realizing optical fiber coding with different intervals of the same central wavelength is adopted to reduce the cost of the optical fiber coding identification module (the optical fiber coding identification module only needs one light source, and the acquisition only needs to consider one wavelength). At the same time, the cost of processing optical fiber coding with different intervals of the same central wavelength is also relatively low.

[0035] like Figure 3As shown, in some embodiments of the first aspect of the present invention, the coding identification detection device 600 includes a high-speed main control module 610, a narrow-band pulse light source 620, a circulator 630, a coupler 640, and a high-speed photoelectric conversion module 650. The high-speed main control module 610, the narrow-band pulse light source 620, the circulator 630, and the coupler 640 are connected in sequence, and the input optical wave end of the circulator 630 is connected to the high-speed main control module 610 through the high-speed photoelectric conversion module 650, and the coupler 640 is connected to the multiple wavelength division multiplexers 500 through different optical fibers.

[0036] The high-speed main control module 610 controls the narrow-band pulse light source 620 to emit light and receives data from the high-speed photoelectric conversion module 650 in real time, and analyzes the collected data to parse out the fiber coding, such as Figure 4 . A narrowband pulse light source 620 in a non-communication band is used to avoid interfering with communication light waves; pulse light waves are sent according to the requirements of the high-speed main control module 610. The circulator 630 is used to realize the transmission of light waves in a certain order, and the coupler 640 realizes one-way light wave input and multiple light wave outputs. In order to reduce costs, a splitter is selected as the coupler 640 of this embodiment; the high-speed optoelectronic conversion module 650 can realize real-time acquisition of the input light waves of the circulator 630. Since only a single central wavelength light source is used, this module uses a relatively cheap optoelectronic conversion module 650, and no wavelength analysis is performed, saving costs.

[0037] Further, in some embodiments of the first aspect of the present invention, the plurality of adapters 210 are each provided with a control chip 211 and a touch switch 212 and an indicator light 213 respectively connected to the control chip 211, and the control chip 211 is connected to the coding recognition detection device 600, such as Figure 5 As shown, each end has a touch switch 212. When the user inserts a jumper fiber, the touch switch 212 is touched, and the touch switch 212 sends a signal to the control chip 211; the indicator light 213 uses an LED light, and each end has an LED light to display the status of the end; the control chip 211 controls the on, off and flashing of the LED light; receives the on and off signals of the touch switch 212; when a user jumper fiber is inserted, the LED light is on, and when no jumper fiber is inserted, the LED light is off. When the code recognition monitoring device detects that the optical fiber code of the remote distribution board corresponding to the end is lost, the port LED is flashed.

[0038] In some embodiments of the first aspect of the present invention, the fiber coding is composed of a plurality of fiber gratings with the same central wavelength, and the interval is n*k, where n is an integer from 1 to 9. The fiber length between each fiber coding and the wavelength division multiplexer 500 is different, and the length is 1+m*1 meters according to the corresponding number of paths m, so as to avoid mutual recognition interference between multiple fiber codings at the rear end of the coupler 640, and finally use the distance as the fiber coding of different branches to distinguish, combined with Figure 1 , Figure 2 shown.

[0039] In some embodiments of the first aspect of the present invention, a protection box 420 is provided on the outside of the communication optical fiber 400 corresponding to the position of the optical fiber code 410, so as to protect multiple optical fibers with replicated optical fiber codes 410.

[0040] like Figure 6 As shown, a short-distance communication system according to an embodiment of the second aspect of the present invention comprises two of the above-mentioned optical fiber distribution boards, and the two optical fiber distribution boards are connected to the communication optical fiber 400 on the opposite side via an optical cable 700.

[0041] This solution uses the optically identifiable characteristics of fiber coding to achieve unique identification of the fiber core of the distribution board, while taking into account cost reduction. To this end, a method of implementing fiber coding with the same central wavelength but different intervals is adopted to reduce the cost of the fiber coding identification module. The unique identification of the fiber core of the distribution board can facilitate the formation of a complete communication link between two fiber distribution boards, thereby achieving efficient and accurate communication.

[0042] Further, in some embodiments of the second aspect of the present invention, the coding identification detection device 600 controls the output of the optical fiber coding identification light wave and the optical data communication light wave to use different pulse widths. A light pulse with a pulse of k is used for optical fiber coding identification, and a light pulse with a pulse of 4*k is used for optical data communication with the coding identification monitoring device on the opposite side, and the pulse width is used to distinguish the optical fiber coding information from the optical data communication information. During optical wave communication, the high-speed main control module 610 controls the narrow-wave pulse light source 620 to send a light wave combination with a pulse width of 4*k sorted by binary information. When the high-speed photoelectric conversion module 650 measures the spectrum of the 4*k pulse, it is considered to be a communication pulse. Figure 7 shown.

[0043] In some embodiments of the second aspect of the present invention, the optical fiber coding identification light wave, the optical data communication light wave and the central wavelength of the user communication light wave of the user access jump fiber are inconsistent, so as not to interfere with the user's normal optical fiber communication.

[0044] In some embodiments of the second aspect of the present invention, the coding identification detection device 600 simultaneously identifies the fiber coding of the opposite communication optical fiber 400, and indicates it in the adapter 210 according to the identified fiber coding status of the opposite communication optical fiber 400, that is, the aforementioned LED light flashes.

[0045] This technical solution mainly realizes the following functions:

[0046] 1. Fiber coding identification

[0047] The high-speed main control module 610 of the code recognition monitoring device controls the narrow-band pulse light source 620 to send a corresponding pulse light wave as required. The light wave passes through the wavelength division circulator 630 and the coupler 640, enters the wavelength division multiplexer 500 and the optical fiber coding of all branches, and part of the light wave is reflected by the optical fiber coding. At the same time, part of the light wave continues to move forward through the optical cable 700 to reach the optical fiber coding on the opposite side, and is reflected by the optical fiber coding on the opposite side.

[0048] The high-speed photoelectric conversion module 650 receives the light wave input by the circulator 630 and converts the light wave into an electrical signal. The high-speed main control module 610 of the coding recognition monitoring device receives the light wave electrical signal data collected by the high-speed photoelectric conversion module 650 in real time and identifies its pulse width. If the light wave pulse width is k, it is an optical fiber coding recognition light wave; if the light wave pulse width is 4*k, it is a communication light wave.

[0049] The high-speed main control module 610 recognizes the fiber coded identification light wave, analyzes the pulse interval length and resolves it into the fiber coded composition. For example, if the pulse intervals are 6, 2, and 1 respectively, then the fiber coded is 621. The length of the fiber coded is calculated based on the difference between the time when the fiber coded is received and the luminous time. l = t00*λ*α / 2, where t00 is the difference between the time when the fiber coded is received and the luminous time, λ is the speed of light, and α is the group refractive index.

[0050] Since the same fiber coded optical fiber distribution panel uses a splitter as a coupler 640, it corresponds to multiple branches, each branch has a fiber code, and the distance between each fiber code and the wavelength division multiplexer 500 is different, so as to distinguish different fiber codes. For example, the branches are 1-12, and the fiber length between the fiber code of the first branch and the wavelength division multiplexer 500 is 1+1*1 meter, that is, 2 meters. When the length of the fiber code is 2 meters, it is the first fiber code; the fiber length between the fiber code of the fiber branch of the sixth branch and the wavelength division multiplexer 500 is 1+6*1 meter, that is, 7 meters. When the length of the fiber code is 7 meters, it is the seventh fiber code.

[0051] After the fiber code is identified, the fiber code on the opposite side will also be identified to form a complete link. Since the fiber codes of the same branch of the distribution board have the same coding value, the fiber cores of the fiber distribution boards on both sides of the optical cable 700 can be matched one by one. For example, the fiber code of the first channel of the fiber distribution board at this end is 621, and the fiber code of the second channel is 622; the fiber code of the first channel of the fiber distribution board on the opposite side is also 621, and the fiber code of the second channel is 622; then the link actually measured is that the link fiber code of the first channel consists of 621 and the far end 621, and the lengths of the two 621 are different.

[0052] 2. Lightwave Data Communication

[0053] Lightwave data communication is composed of binary, that is, a 4*k width pulse is 1, and a 4*k width interval is 0, such as Figure 7 For example, the binary data of 1101 needs to send a light wave composed of 1 4*k width pulse + 1 4*k width pulse + 1 4*k width interval + 1 4*k width pulse.

[0054] The optical fiber distribution panel on the opposite side collects the light wave information and recognizes that the pulse width is 4*k, that is, it parses the light wave data into the information data to be sent.

[0055] 3. Link diagnosis

[0056] After the fiber code is recognized for the first time, the fiber link information is recorded in the system. During subsequent regular tests, when the fiber code is missing, it is considered that the link is interrupted, and the port LED corresponding to the fiber link is set to flash.

[0057] 4. User optical fiber communication

[0058] For user optical fiber communication, the patch fiber is inserted into the adapter 210, and the light wave is input from the adapter 210, coupled by the wavelength division multiplexer 500, and then enters the optical fiber encoding to the optical cable 700, and then to the optical fiber distribution board on the opposite side. Since the central wavelength of the light source and the central wavelength of the optical fiber encoding of the optical fiber distribution board are inconsistent with the central wavelength of the user's optical fiber communication, the normal optical fiber communication of the user is not interfered.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An optical fiber distribution panel capable of identifying the fiber core, characterized in that: include: Distribution panel body; and a An adapter module, which is composed of a plurality of adapters arranged and has a port for user access patch cords to be inserted; A plurality of groups of optical fibers in the tray and communication optical fibers, wherein the number of the optical fibers in the tray and the communication optical fibers is the same as that of the adapter, one end of the optical fibers in the tray is connected to the adapter in a one-to-one correspondence, and the communication optical fibers are provided with uniquely identifiable optical fiber codes, and the central wavelengths of the optical fiber codes on different communication optical fibers are the same and the intervals are different; A plurality of wavelength division multiplexers, the number of which is the same as that of the adapters, the other end of the optical fiber in the tray and the communication optical fiber are connected to the wavelength division multiplexers one by one, and the distances between different wavelength division multiplexers and the optical fiber codes on the corresponding communication optical fibers are kept different; The coding identification and detection devices are respectively connected to the plurality of wavelength division multiplexers to identify the optical fiber coding on the communication optical fiber.

2. The optical fiber distribution panel with identifiable fiber core according to claim 1, characterized in that: The coding identification detection device includes a high-speed main control module, a narrow-band pulse light source, a circulator, a coupler, and a high-speed photoelectric conversion module. The high-speed main control module, narrow-band pulse light source, circulator, and coupler are connected in sequence. The input optical wave end of the circulator is connected to the high-speed main control module through the high-speed photoelectric conversion module, and the coupler is connected to multiple wavelength division multiplexers through different optical fibers.

3. The optical fiber distribution panel with identifiable fiber core according to claim 2, characterized in that: The coupler is a splitter.

4. The optical fiber distribution panel with identifiable fiber core according to claim 1 or 2, characterized in that: The plurality of adapters are all provided with a control chip and a touch switch and an indicator light respectively connected to the control chip, and the control chip is connected to the coding identification detection device.

5. The optical fiber distribution panel with identifiable fiber core according to claim 1, characterized in that: The fiber coding is composed of a plurality of fiber gratings with the same central wavelength, the interval of which is n*k, wherein n is an integer from 1 to 9, and k is the minimum pulse width.

6. The optical fiber distribution panel with identifiable fiber core according to claim 5, characterized in that: A protection box is arranged on the outside of the communication optical fiber corresponding to the optical fiber coding position.

7. A short-range communication system, characterized in that: It comprises two optical fiber distribution panels as claimed in any one of claims 1 to 6, wherein the two optical fiber distribution panels are connected to the communication optical fibers on opposite sides via optical cables.

8. A short-distance communication system according to claim 7, characterized in that: The coding identification detection device controls the output optical fiber coding identification light waves and optical data communication light waves to adopt different pulse widths.

9. A short-distance communication system according to claim 8, characterized in that: The center wavelengths of the optical fiber coding identification light wave, the optical data communication light wave and the user communication light wave of the user access jump fiber are inconsistent.

10. A short distance communication system according to claim 7, characterized in that: The coding identification and detection device simultaneously identifies the optical fiber coding of the opposite communication optical fiber, and indicates on the adapter according to the identified optical fiber coding status of the opposite communication optical fiber.

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