CN113890613A - Optical fiber filtering system for transmitting multiple services by one optical fiber - Google Patents
Optical fiber filtering system for transmitting multiple services by one optical fiber Download PDFInfo
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- CN113890613A CN113890613A CN202111140936.0A CN202111140936A CN113890613A CN 113890613 A CN113890613 A CN 113890613A CN 202111140936 A CN202111140936 A CN 202111140936A CN 113890613 A CN113890613 A CN 113890613A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Abstract
The invention relates to the technical field of optical fiber communication, and discloses an optical fiber filtering system for transmitting multiple services by one optical fiber. The optical signal of two optical modules is combined together through the 1-to-2 optical combiner and transmitted through the same optical fiber, the combined optical signal is separated by the 1-to-2 optical combiner and then respectively transmitted to the two optical modules, so that the optical combining and splitting functions are realized, the used optical modules are single-fiber bidirectional optical modules, the wavelength selection is carried out by the built-in filter of the single-fiber bidirectional optical module, the optical signal with the required wavelength is received, the signals with other wavelengths are filtered, the optical signals with different wavelengths are simultaneously transmitted through the optical fiber filter system, the multiple services are transmitted through one optical fiber, and the effect of multiplexing optical fiber resources is achieved.
Description
Technical Field
The invention relates to the technical field of optical fiber communication, in particular to an optical fiber filtering system for transmitting multiple services by one optical fiber.
Background
Optical fiber communications (optical fiber communications) is emerging from optical communications, has become one of the main pillars of modern communications, and plays a very important role in modern telecommunication networks, and optical fiber communications is an emerging technology, which has a rapid development speed in recent years and a wide application range, and is rare in communication history; the optical fiber communication in the market at present has the problem of low optical fiber resource reuse rate, and a plurality of optical fibers are needed when various services are transmitted. The application case of the invention is that an optical fiber distribution system is added on the basis of the original optical fiber access (PON) system to realize the coverage of 5G wireless communication signals, and the coverage can be similar to WIFI coverage, video monitoring, sensor network, intelligent control and the like.
Disclosure of Invention
The invention aims to provide an optical fiber filtering system for transmitting multiple services by one optical fiber, which achieves the purposes of transmitting multiple services by one optical fiber and solving the problem of low optical fiber resource reuse rate.
In order to achieve the purpose, the invention provides the following technical scheme: an optical fiber filtering system for transmitting multiple services by one optical fiber comprises a near-end unit, a far-end unit, a PON (passive optical network) terminal and an optical modem, wherein the near-end unit is arranged at a base station end and comprises a small base station main board, a TRX1 module, a TRX2 module, a repeater DAU (digital subscriber Unit) integrated module, an SFP (Small form-factor pluggable) optical module, a near-end one-to-two optical splitter and a 1 x2 optical combiner, the far-end unit is arranged at a user end and comprises a far-end one-to-two optical splitter, an RU (remote Unit) integrated module and a 1 x2 optical splitter.
Preferably, a signal end of the TRX1 module is in bidirectional signal connection with a signal end of a small base station main board, a signal end of the TRX2 module is in bidirectional signal connection with a signal end of a small base station main board, a signal end of the TRX1 module is in bidirectional signal connection with a signal end of a repeater DAU integrated module, a signal end of the TRX2 module is in bidirectional signal connection with a signal end of a repeater DAU integrated module, a signal output end of the repeater DAU integrated module is in signal connection with a signal input end of a near-end one-to-two optical splitter, and a signal output end of the PON network terminal is in signal connection with a signal input end of the near-end one-to-two optical splitter.
Preferably, the optical modem is provided with a GPON1490T/1310R optical module, a signal end of the GPON1490T/1310R optical module is bidirectionally signal-connected to a signal end of a 1 x2 optical combiner, the near-end unit is provided with an SFP 1270T/155OR optical module, the SFP 1270T/155OR optical module and the GPON1490T/1310R optical module combine signals into one optical fiber through the 1 x2 optical combiner, and the signal end of the 1 x2 optical combiner is bidirectionally signal-connected to the signal end of the SFP 1270T/155OR optical module.
Preferably, the signal output end of the far-end one-to-two optical splitter is in signal connection with the signal input end of the optical modem, and the signal output end of the far-end one-to-two optical splitter is in signal connection with the signal input end of the RU integrated module.
Preferably, the near-end unit is provided with a GPON1310T/1490R optical module, the far-end unit is provided with an SFP 1550T/1270R optical module, the signal end of the 1 × 2 optical splitter is bidirectionally signal-connected with the signal end of the GPON1310T/1490R optical module, and the signal end of the 1 × 2 optical splitter is bidirectionally signal-connected with the signal end of the SFP 1550T/1270R optical module.
Preferably, the number of the SFP optical modules, the number of the near-end one-to-two optical splitters, the number of the far-end one-to-two optical splitters, the number of the RU integrated modules, and the number of the optical modems are sixteen, and signal output ends of sixteen near-end one-to-two optical splitters are in signal connection with signal input ends of sixteen far-end one-to-two optical splitters.
Preferably, the signal end of the 1 × 2 optical combiner is bidirectionally connected with the signal end of the 1 × 2 optical splitter.
Preferably, the signal connection modes of the near-end unit, the far-end unit, the PON network end and the optical modem are all connected by optical fibers, and the optical modules used by the near-end unit, the far-end unit, the PON network end and the optical modem are all single-fiber bidirectional optical modules.
Preferably, a filter is disposed inside the single-fiber bidirectional optical module, and the optical fiber filter system includes a plurality of optical signals with different wavelengths for simultaneous transmission.
The invention provides an optical fiber filtering system for transmitting multiple services by one optical fiber. The method has the following beneficial effects:
(1) the signal end of the 1-to-2 optical combiner is in bidirectional signal connection with the signal end of the 1-to-2 optical splitter, so that the 1-to-2 optical combiner combines optical signals of two optical modules together and transmits the optical signals through the same optical fiber, the 1-to-2 optical splitter divides the combined optical signals and transmits the optical signals to the two optical modules respectively, the optical combining and splitting functions are realized, the stability of signal transmission is improved through the optical fiber, the used optical modules are single-fiber bidirectional optical modules, wavelength selection is carried out through a filter plate built in the single-fiber bidirectional optical module, the optical signals with the required wavelength are received, signals with other wavelengths are filtered, the optical signals with different wavelengths are transmitted simultaneously through the optical fiber filter system, multiple services are transmitted through one optical fiber, and the effect of optical fiber resource multiplexing is achieved.
Drawings
FIG. 1 is a block diagram schematically illustrating the structure of the present invention;
FIG. 2 is a block diagram of the networking of the present invention;
fig. 3 is a schematic block diagram of an optical path of the single-fiber bidirectional optical module according to the present invention.
In the figure: 1 near-end unit, 101 small base station mainboard, 102 TRX1 module, 103 TRX2 module, 104 repeater DAU integrated module, 105 SFP optical module, 106 near-end one-to-two optical splitter, 1071 × 2 optical combiner, 2 far-end unit, 201 far-end one-to-two optical splitter, 202 RU integrated module, 2031 × 2 optical splitter, 3 PON network terminal and 4 optical modem.
Detailed Description
As shown in fig. 1-3, the present invention provides a technical solution: an optical fiber filtering system for transmitting multiple services by one optical fiber comprises a near-end unit 1, a far-end unit 2, a PON network tail end 3 and an optical modem 4, wherein the near-end unit 1 is arranged at a base station end, the near-end unit 1 comprises a small base station main board 101, a TRX1 module 102, a TRX2 module 103, a repeater DAU integrated module 104, an SFP optical module 105, a near-end one-to-two optical splitter 106 and a 1 x2 optical combiner 107, a signal end of the TRX1 module 102 is in bidirectional signal connection with a signal end of the small base station main board 101, a signal end of the TRX2 module 103 is in bidirectional signal connection with a signal end of the small base station main board 101, a signal end of the TRX1 module 102 is in bidirectional signal connection with a signal end of the repeater DAU integrated module 104, a signal end of the TRX2 module 103 is in bidirectional signal connection with a signal end of the repeater DAU integrated module 104, a signal output end of the repeater DAU integrated module 104 is in signal connection with a signal input end of the near-to-end two optical splitter 106, the signal output end of the PON network end 3 is in signal connection with the signal input end of the near-end one-to-two optical splitter 106, the optical modem 4 is provided with a GPON1490T/1310R optical module, the signal end of the GPON1490T/1310R optical module is in bidirectional signal connection with the signal end of the 1 x2 optical combiner 107, the near-end unit 1 is provided with an SFP 1270T/155OR optical module, the SFP 1270T/155OR optical module and the GPON1490T/1310R optical module combine the signals into one optical fiber through the 1 x2 optical combiner, the signal end of the 1 x2 optical combiner 107 is in bidirectional signal connection with the signal end of the SFP 1270T/155OR optical module, so that the optical signals of the two optical modules are combined and transmitted through the same optical fiber, the far-end unit 2 is arranged at a user end, the far-end unit 2 comprises a far-end one-to-two optical splitter 201, an RU integrated module 202, an optical splitter 202, 1 x2 optical splitter 203, the signal output end of the far-end one-to-two optical splitter 201 is connected with the signal input end of the optical modem 4 by signals, the signal output end of the far-end one-to-two optical splitter 201 is connected with the signal input end of the RU integrated module 202 by signals so as to connect signals to users, the optical modem 4 is provided with a GPON1310T/1490R optical module, the far-end unit 2 is provided with an SFP 1550T/1270R optical module, the signal end of the 1 x2 optical splitter 203 is connected with the signal end of the GPON1310T/1490R optical module by bidirectional signals, the signal end of the 1 x2 optical splitter 203 is connected with the signal end of the SFP 1550T/1270R optical module by bidirectional signals, a cascade network between AU and RRU is realized, the combined optical signals are respectively transmitted to two optical modules after being separated, the signal end of the 1 x2 optical splitter 107 is connected with the signal end of the 1 x2 optical splitter 203 by bidirectional signals, the optical combining and splitting functions are realized, the number of the SFP optical module 105, the number of the near-end one-to-two optical splitters 106, the number of the far-end one-to-two optical splitters 201, the number of the RU integrated module 202 and the number of the optical modems 4 are sixteen, the signal output ends of the sixteen near-end one-to-two optical splitters 106 are in signal connection with the signal input ends of the sixteen far-end one-to-two optical splitters 201, so that the number of users is enlarged, the signal connection modes of the near-end unit 1, the far-end unit 2, the PON network tail end 3 and the optical modems 4 are all in optical fiber connection, so that the signal transmission stability is improved, the optical modules used by the near-end unit 1, the far-end unit 2, the PON network tail end 3 and the optical modems 4 are all single-fiber bidirectional optical modules, so that the wavelength screening effect is realized by the built-in single-fiber bidirectional optical modules, and the light with the emission wavelength lambda 1 is completely transmitted from the LD to the contact pin direction through a 45-degree filter, total reflection of light of other wavelengths and total reflection of light in the opposite direction; the optical module receives optical signals with required wavelengths and filters signals with other wavelengths through a 0-degree filter, realizes the effects of receiving optical signals with required wavelengths and filtering signals with other wavelengths, realizes analog and digital signal conversion, CPRI protocol transmission, PON signal optical combining function, photoelectric conversion, digital up-down frequency conversion and transceiver function through a near-end unit 1, a far-end unit 2 and a PON network tail end 3, realizes bidirectional signal connection with a signal end of a 1-2 optical splitter 203 through a signal end of the 1-2 optical splitter 107, enables the 1-2 optical splitter 107 to combine the optical signals of two optical modules together and transmit the optical signals through the same optical fiber, enables the 1-2 optical splitter 203 to separate the combined optical signals and then transmit the optical signals to the two optical modules respectively, realizes the optical combining and splitting functions, and improves the transmission stability through the optical fiber, the optical fiber filtering system simultaneously transmits a plurality of optical signals with different wavelengths, so that a plurality of services are transmitted through one optical fiber, and the effect of multiplexing optical fiber resources is achieved.
When in use, the near-end unit 1 is arranged at a base station end so as to facilitate coupling of base station signals, the far-end unit 2 is arranged at a user end so as to facilitate amplification of base station signals and access of users, the TRX1 module 102, the TRX2 module 103 and the small base station main board 101 transmit signals to the repeater DAU integrated module 104, the signal output end of the repeater DAU integrated module 104 is in signal connection with the signal input end of the near-end one-to-two optical splitter 106 so as to control distribution of switching signals, the signal output end of the PON network terminal 3 is in signal connection with the signal input end of the near-end one-to-two optical splitter 106 so as to achieve PON signal optical combining function, the GPON1490T/1310R optical module is in bidirectional signal connection with the 1 x2 optical combiner 107, and the SFP 1270T/155OR and the GPON1490T/1310R optical module are matched to combine signals into one optical fiber through the 1 x2 optical combiner, the 1 x2 optical combiner 107 is in bidirectional signal connection with the SFP 1270T/155OR optical module, so that the optical signals of the two optical modules are combined and transmitted through the same optical fiber, the signal output end of the far-end one-to-two optical splitter 201 is in signal connection with the signal input end of the optical modem 4, the signal output end of the far-end one-to-two optical splitter 201 is matched with the signal input end of the RU integrated module 202 to be in signal connection with a user, the 1 x2 optical splitter 203 is in bidirectional signal connection with the GPON1310T/1490R optical module, the 1 x2 optical splitter 203 is in bidirectional signal connection with the SFP 1550T/1270R optical module, so that a cascade network between an AU and an RRU is realized, the combined optical signals are separated and then respectively transmitted to the two optical modules, and the signal ends of the 1 x2 optical combiner 107 are in bidirectional signal connection with the signal end of the 1 x2 optical splitter 203, the optical modules used in cooperation are all single-fiber bidirectional optical modules, so that a wavelength screening effect is realized by means of a built-in filter plate of the single-fiber bidirectional optical module, and the light with the emission wavelength lambda 1 is totally transmitted in the direction from the LD to the contact pin, totally reflected by the light with other wavelengths and totally reflected by the light with the opposite direction through a 45-degree filter plate; when the optical signals are transmitted from a near end to a far end, a near-end SFP optical module sends the optical signals with the wavelength of 1270nm, a GPON optical module sends the optical signals with the wavelength of 1490nm, the optical signals are combined together after passing through an optical combiner, the far-end optical splitter separates the received optical signals and then respectively sends the optical signals to an SFP optical module and a GPON optical module, the SFP optical module receives the optical signals with the wavelength of 1270nm through a built-in filter, and the optical signals with other wavelengths are filtered; the GPON optical module receives an optical signal with the wavelength of 1490nm through a built-in filter plate, filters optical signals with other wavelengths, when the optical signal is transmitted from a far end to a near end, a far-end SFP optical module sends an optical signal with the wavelength of 1550nm, the GPON optical module sends an optical signal with the wavelength of 1310nm, the optical signals are combined together after passing through an optical combiner, the near-end optical splitter separates the received optical signals and then respectively transmits the optical signals to an SFP optical module and a GPON optical module, and the SFP optical module receives the optical signal with the wavelength of 1550nm through the built-in filter plate and filters the optical signals with other wavelengths; the GPON optical module receives optical signals with 1310nm wavelength through a built-in filter plate, filters optical signals with other wavelengths, and realizes optical combining and splitting functions, the number of the SFP optical module 105, the near-end one-to-two optical splitter 106, the far-end one-to-two optical splitter 201, the RU integrated module 202 and the optical modem 4 is sixteen, so that the number of users is enlarged, the signal output ends of the sixteen near-end one-to-two optical splitters 106 are all in signal connection with the signal input ends of the sixteen far-end one-to-two optical splitters 201, so that photoelectric conversion, digital up-down frequency conversion and transceiver functions are realized, the signal connection modes of the near-end unit 1, the far-end unit 2, the PON network terminal 3 and the optical modem 4 are all connected through optical fibers, so that the transmission stability is improved, the filter plate is arranged in the single-fiber bidirectional optical module, and a plurality of optical signals with different wavelengths are transmitted simultaneously in the optical fiber filter system, therefore, multiple services are transmitted through one optical fiber, and optical fiber resource multiplexing is achieved.
Claims (9)
1. An optical fiber filtering system for transmitting multiple services by one optical fiber comprises a near-end unit (1), a far-end unit (2), a PON network end (3) and an optical modem (4), and is characterized in that: the near-end unit (1) is arranged at a base station end, the near-end unit (1) comprises a small base station main board (101), a TRX1 module (102), a TRX2 module (103), a repeater DAU integrated module (104), an SFP optical module (105), a near-end one-to-two optical splitter (106) and a 1 x2 optical combiner (107), the far-end unit (2) is arranged at a user end, and the far-end unit (2) comprises a far-end one-to-two optical splitter (201), an RU integrated module (202) and a 1 x2 optical splitter (203).
2. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 1, wherein: the signal end of the TRX1 module (102) is in bidirectional signal connection with the signal end of a small base station main board (101), the signal end of the TRX2 module (103) is in bidirectional signal connection with the signal end of the small base station main board (101), the signal end of the TRX1 module (102) is in bidirectional signal connection with the signal end of a repeater DAU integrated module (104), the signal end of the TRX2 module (103) is in bidirectional signal connection with the signal end of the repeater DAU integrated module (104), the signal output end of the repeater DAU integrated module (104) is in signal connection with the signal input end of a near-end one-to-two optical splitter (106), and the signal output end of the PON network tail end (3) is in signal connection with the signal input end of the near-end one-to-two optical splitter (106).
3. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 2, wherein: the optical modem (4) is provided with a GPON1490T/1310R optical module, the signal end of the GPON1490T/1310R optical module is in bidirectional signal connection with the signal end of a 1 x2 optical combiner (107), the near-end unit (1) is provided with an SFP 1270T/155OR optical module, the SFP 1270T/155OR optical module and the GPON1490T/1310R optical module combine signals into one optical fiber through the 1 x2 optical combiner (107), and the signal end of the 1 x2 optical combiner (107) is in bidirectional signal connection with the signal end of the SFP 1270T/155OR optical module.
4. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 3, wherein: the signal output end of the far-end one-to-two optical splitter (201) is in signal connection with the signal input end of the optical modem (4), and the signal output end of the far-end one-to-two optical splitter (201) is in signal connection with the signal input end of the RU integrated module (202).
5. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 4, wherein: the optical modem (4) is provided with a GPON1310T/1490R optical module, the remote unit (2) is provided with an SFP 1550T/1270R optical module, the signal end of the 1 x2 optical splitter (203) is in bidirectional signal connection with the signal end of the GPON1310T/1490R optical module, and the signal end of the 1 x2 optical splitter (203) is in bidirectional signal connection with the signal end of the SFP 1550T/1270R optical module.
6. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 5, wherein: the number of the SFP optical modules (105), the number of the near-end one-to-two optical splitters (106), the number of the far-end one-to-two optical splitters (201), the number of the RU integrated modules (202) and the number of the optical modems (4) are sixteen, and the signal output ends of sixteen near-end one-to-two optical splitters (106) are in signal connection with the signal input ends of sixteen far-end one-to-two optical splitters (201).
7. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 6, wherein: and the signal end of the 1 x2 optical combiner (107) is in bidirectional signal connection with the signal end of the 1 x2 optical splitter (203).
8. The optical fiber filtering system for transmitting multiple services through one optical fiber according to claim 7, wherein: the optical fiber optical modem is characterized in that the signal connection modes of the near-end unit (1), the far-end unit (2), the PON network terminal (3) and the optical modem (4) are all connected through optical fibers, and the optical modules used by the near-end unit (1), the far-end unit (2), the PON network terminal (3) and the optical modem (4) are single-fiber bidirectional optical modules.
9. The optical fiber filtering system for transmitting multiple services over one optical fiber according to claim 8, wherein: the single-fiber bidirectional optical module is internally provided with a filter, and the optical fiber filter system comprises a plurality of optical signals with different wavelengths for simultaneous transmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111140936.0A CN113890613A (en) | 2021-09-28 | 2021-09-28 | Optical fiber filtering system for transmitting multiple services by one optical fiber |
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| CN202111140936.0A CN113890613A (en) | 2021-09-28 | 2021-09-28 | Optical fiber filtering system for transmitting multiple services by one optical fiber |
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