CN210041836U - Remote passive gain module capable of realizing state monitoring and unrepeatered transmission system - Google Patents
Remote passive gain module capable of realizing state monitoring and unrepeatered transmission system Download PDFInfo
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- CN210041836U CN210041836U CN201921095974.7U CN201921095974U CN210041836U CN 210041836 U CN210041836 U CN 210041836U CN 201921095974 U CN201921095974 U CN 201921095974U CN 210041836 U CN210041836 U CN 210041836U
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Abstract
The utility model provides a can realize remote passive gain module and no relay transmission system of condition monitoring, include: the input end of the first monitoring optical splitter is used for connecting a front transmission optical fiber; the secondary light splitting end of the first monitoring light splitter is connected with the first optical detector, and the main light splitting end of the first monitoring light splitter is connected with the signal end of the first signal pumping wave combiner; the common end of the first signal pump combiner is connected with one end of the erbium-doped optical fiber, the other end of the erbium-doped optical fiber is connected with the input end of the one-way optical isolator, the output end of the one-way optical isolator is connected with one end of the filter, the other end of the filter is connected with the input end of the second monitoring optical splitter, the secondary optical splitter of the second monitoring optical splitter is connected with the second optical detector, the main optical splitter is connected with the signal end of the second signal pump combiner, and the common end of the second signal pump combiner is used for being connected with the rear transmission optical fiber; the reflecting end of the second signal pumping combiner is connected with the input end of the pump light splitter, and the secondary light splitting end of the pump light splitter is connected with the monitoring photoelectric module. The state of the remote passive gain module is effectively monitored.
Description
Technical Field
The utility model belongs to the technical field of the optical transmission technique and specifically relates to a can realize remote passive gain module of state control.
Background
In special application occasions of submarine transmission or land, due to the limitation of natural conditions, an active relay and monitoring system cannot be established in a transmission link; or the operation and maintenance cost after the active relay is used is not affordable for operators, and the single-span unrepeatered transmission distance needs to be increased.
The remote pump amplifier can prolong the transmission distance of the single-span non-relay system. The remote pump amplifier is composed of two parts: an active pumping unit and a passive gain module; the passive gain module needs to be separated from an active pumping unit, and the active pumping unit is placed in a transmitting end machine room (a forward remote amplifier) or a receiving end machine room (a backward remote amplifier) with better conditions; a large power supply is required; when the passive gain module is implemented, the passive gain module is arranged in the middle of the transmission line in a hanging rod mode or an underground mode according to field conditions; since the passive gain module is placed in an area where there is no power supply, its state is unknown as a black box. In actual use, an engineer cannot know the input and output power state or the working state of the remote passive gain module. This has been a problem for many years, which has plagued designers and engineers.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provide a remote passive gain module and a relay-free transmission system which can realize state monitoring, and realize the effective monitoring of the input signal power and the output signal power of the remote passive gain module; the working state of the passive gain module can be mastered, and the pump light power of each pump unit positioned in the remote power supply terminal is adjusted according to the obtained input and output power information, so that the purpose of remotely controlling the passive gain module is achieved. The utility model adopts the technical proposal that:
a remote passive gain module capable of performing condition monitoring, comprising:
the optical fiber monitoring system comprises a first optical detector, a first monitoring optical splitter, a first signal pumping combiner, an erbium-doped optical fiber, a one-way optical isolator, a filter, a second monitoring optical splitter, a second optical detector, a second signal pumping combiner, a pumping optical splitter and a monitoring photoelectric module;
the input end of the first monitoring optical splitter is used as the input end of the remote passive gain module and is used for being connected with a front transmission optical fiber; the secondary light splitting end of the first monitoring light splitter is connected with the first optical detector, and the main light splitting end of the first monitoring light splitter is connected with the signal end of the first signal pumping wave combiner; the common end of the first signal pump combiner is connected with one end of the erbium-doped optical fiber, the other end of the erbium-doped optical fiber is connected with the input end of the one-way optical isolator, the output end of the one-way optical isolator is connected with one end of the filter, the other end of the filter is connected with the input end of the second monitoring optical splitter, the secondary optical splitter of the second monitoring optical splitter is connected with the second optical detector, the main optical splitter is connected with the signal end of the second signal pump combiner, and the common end of the second signal pump combiner is used as the output end of the remote passive gain module and is used for being connected with the rear transmission optical fiber;
the reflection end of the second signal pump combiner is connected with the input end of the pump light splitter, the main light splitting end of the pump light splitter is connected with the reflection end of the first signal pump combiner, and the secondary light splitting end of the pump light splitter is connected with the monitoring photoelectric module.
Furthermore, the monitoring photoelectric module comprises a photoelectric cell, a power supply conversion circuit, a microcontroller unit and a wireless communication module;
the light output by the secondary light splitting end of the pump light splitter is aligned to the photocell, the photocell is connected with the input end of the power supply conversion circuit, and the output end of the power supply conversion circuit is respectively connected with the microcontroller unit and the wireless communication module;
the first optical detector and the second optical detector are respectively coupled with two signal input ends of the microcontroller unit, and the other input/output port of the microcontroller unit is connected with the wireless communication module.
Further, the filter employs a GFF filter.
Further, both the microcontroller unit and the wireless communication module support a sleep mode.
Further, the wireless communication module adopts a 3G/4G communication module or an NB-IoT wireless communication module.
A unrepeatered transmission system including the remote passive gain module, comprising: the remote passive gain module comprises a transmitting end, a power amplifier, a first transmission optical fiber, the remote passive gain module, a second transmission optical fiber, a third signal pumping combiner, a preamplifier, a receiving end and a remote pumping unit;
the transmitting end is connected with the input end of the power amplifier, the output end of the power amplifier is connected with one end of a first transmission optical fiber, the other end of the first transmission optical fiber is connected with the input end of a remote passive gain module, the output end of the remote passive gain module is connected with one end of a second transmission optical fiber, the other end of the second transmission optical fiber is connected with the common end of a third signal pump combiner, the reflection end of the third signal pump combiner is connected with a remote pump unit, the signal end is connected with the input end of a preamplifier, and the output end of the preamplifier is connected with the receiving end.
Furthermore, the remote pumping unit at least comprises two pumping sources with different wavelengths, and the input signal power and the output signal power of the remote passive gain module are obtained according to monitoring, so that the pumping light power of the remote pumping unit in the remote control center is controlled, and the gain and the flatness of the remote passive gain module are controlled.
The utility model has the advantages that:
1) through the improved design of the optical path structure, the self-power supply of the monitoring photoelectric module in the remote passive gain module is realized by utilizing remote pump light.
2) The monitoring photoelectric module realizes the effective monitoring of the input signal power and the output signal power of the remote passive gain module; the working state of the passive gain module can be mastered.
3) The remote control center obtains the input signal power and the output signal power of the remote passive gain module, and then controls the pump light power of the remote pumping unit in the remote control center, so as to achieve the effect of controlling the gain and the flatness of the remote passive gain module.
Drawings
Fig. 1 is a schematic structural diagram of the remote passive gain module of the present invention.
Fig. 2 is a schematic structural diagram of a monitoring optoelectronic module according to the present invention.
Fig. 3 is a schematic structural diagram of the unrepeatered transmission system of the present invention.
Fig. 4 is a schematic structural diagram of the remote pumping unit of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
Fig. 1 shows a structure of a remote passive gain module 4 capable of implementing condition monitoring, comprising:
a first optical detector 401, a first monitoring optical splitter 402, a first signal pump combiner 403, an erbium-doped fiber 404, a one-way optical isolator 405, a filter 406, a second monitoring optical splitter 407, a second optical detector 408, a second signal pump combiner 409, a pump optical splitter 410, and a monitoring optical module 411;
wherein the filter 406 employs a GFF filter (gain flattening filter);
the input end of the first monitoring splitter 402 serves as the input end of the remote passive gain module and is used for being connected with a front transmission optical fiber; a secondary optical splitter of the first monitoring optical splitter 402 is connected with the first optical detector 401, and a primary optical splitter is connected with a signal end of the first signal pump combiner 403; the common end of the first signal pump combiner 403 is connected with one end of an erbium-doped fiber 404, the other end of the erbium-doped fiber 404 is connected with the input end of a one-way optical isolator 405, the output end of the one-way optical isolator 405 is connected with one end of a filter 406, the other end of the filter 406 is connected with the input end of a second monitoring optical splitter 407, the secondary optical splitter of the second monitoring optical splitter 407 is connected with a second optical detector 408, the main optical splitter is connected with the signal end of a second signal pump combiner 409, and the common end of the second signal pump combiner 409 is used as the output end of a remote passive gain module and is used for connecting with a transmission fiber;
the reflection end of the second signal pump combiner 409 is connected with the input end of the pump light splitter 410, the main beam splitting end of the pump light splitter 410 is connected with the reflection end of the first signal pump combiner 403, and the secondary beam splitting end is connected with the monitoring photoelectric module 411;
as shown in fig. 2, the monitoring photovoltaic module 411 includes a photovoltaic cell, a power supply conversion circuit, a microcontroller unit, and a wireless communication module;
the light output by the secondary light splitting end of the pump light splitter 410 is aligned to a photocell, the photocell is connected with the input end of a power supply conversion circuit, and the output end of the power supply conversion circuit is respectively connected with a microcontroller unit and a wireless communication module;
the first optical detector 401 and the second optical detector 408 are respectively coupled to two signal input ends of the microcontroller unit, and the other input/output port of the microcontroller unit is connected to the wireless communication module;
the microcontroller unit and the wireless communication module support a sleep mode; the wireless communication module comprises a 3G/4G communication module or some special wireless communication module, such as an NB-IoT wireless communication module and the like;
a unrepeatered transmission system including the remote passive gain module, as shown in fig. 3, comprising: the device comprises a transmitting end 1, a power amplifier 2, a first transmission optical fiber 3, a remote passive gain module 4, a second transmission optical fiber 5, a third signal pumping combiner 6, a preamplifier 7, a receiving end 8 and a remote pumping unit 9;
the transmitting end 1 is connected with the input end of the power amplifier 2, the output end of the power amplifier 2 is connected with one end of a first transmission optical fiber 3, the other end of the first transmission optical fiber 3 is connected with the input end of a remote passive gain module 4, the output end of the remote passive gain module 4 is connected with one end of a second transmission optical fiber 5, the other end of the second transmission optical fiber 5 is connected with the common end of a third signal pump combiner 6, the reflecting end of the third signal pump combiner 6 is connected with a remote pump unit 9, the signal end is connected with the input end of a preamplifier 7, and the output end of the preamplifier 7 is connected with a receiving end 8.
Wherein the remote pumping unit 9 may comprise a single pump source, or, as shown in fig. 4, comprise a first pump source 901, a second pump source 902, a pump combiner 903; the first pump source 901 and the second pump source 902 are respectively connected with a pump combiner 903; the wavelengths of the first pump source 901 and the second pump source 902 are 1450nm and 1480nm respectively;
after entering the second transmission fiber 5, the pump light enters the remote passive gain module 4, passes through the second signal pump combiner 409, the main beam splitting end of the pump light splitter 410, and the first signal pump combiner 403, and enters the erbium-doped fiber;
at the secondary light splitting end of the pump light splitter 410, a small part of pump light is obtained, so that the photocell generates electric energy, and the power supply voltage is obtained through the power supply conversion circuit to respectively supply power to the microcontroller unit and the wireless communication module;
the microcontroller unit and the wireless communication module are in a low-power consumption sleep mode at ordinary times, and when the wireless communication module receives a state inquiry command, the microcontroller unit and the wireless communication module are awakened; the microcontroller unit samples detection signals of the first optical detector 401 and the second optical detector 408 to obtain input signal power and output signal power of the remote passive gain module 4; then, the detected input signal power and output signal power are sent to a remote control center through a wireless communication module; the remote control center can obtain the input signal power and the output signal power of the remote passive gain module 4, and then control the pump light power of the remote pumping unit in the remote control center, so as to achieve the effect of controlling the gain and the flatness of the remote passive gain module.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (6)
1. A remote passive gain module (4) enabling condition monitoring, comprising:
the optical fiber monitoring system comprises a first optical detector (401), a first monitoring optical splitter (402), a first signal pumping combiner (403), an erbium-doped optical fiber (404), a one-way optical isolator (405), a filter (406), a second monitoring optical splitter (407), a second optical detector (408), a second signal pumping combiner (409), a pumping optical splitter (410) and a monitoring photoelectric module (411);
the input end of the first monitoring optical splitter (402) is used as the input end of the remote passive gain module and is used for being connected with a front transmission optical fiber; a secondary optical splitting end of the first monitoring optical splitter (402) is connected with the first optical detector (401), and a main optical splitting end is connected with a signal end of the first signal pump combiner (403); the common end of a first signal pump combiner (403) is connected with one end of an erbium-doped fiber (404), the other end of the erbium-doped fiber (404) is connected with the input end of a one-way optical isolator (405), the output end of the one-way optical isolator (405) is connected with one end of a filter (406), the other end of the filter (406) is connected with the input end of a second monitoring optical splitter (407), the secondary optical splitter of the second monitoring optical splitter (407) is connected with a second optical detector (408), the main optical splitter is connected with the signal end of a second signal pump combiner (409), and the common end of the second signal pump combiner (409) is used as the output end of a remote passive gain module and is used for being connected with a rear transmission fiber;
the reflection end of the second signal pump combiner (409) is connected with the input end of the pump optical splitter (410), the main light splitting end of the pump optical splitter (410) is connected with the reflection end of the first signal pump combiner (403), and the secondary light splitting end is connected with the monitoring photoelectric module (411).
2. A remote passive gain module (4) enabling condition monitoring according to claim 1,
the monitoring photoelectric module (411) comprises a photoelectric cell, a power supply conversion circuit, a microcontroller unit and a wireless communication module;
the light output by the secondary light splitting end of the pump light splitter (410) is aligned to a photocell, the photocell is connected with the input end of a power supply conversion circuit, and the output end of the power supply conversion circuit is respectively connected with a microcontroller unit and a wireless communication module;
the first light detector (401) and the second light detector (408) are respectively coupled to two signal input ends of the microcontroller unit, and the other input/output port of the microcontroller unit is connected to the wireless communication module.
3. A remote passive gain module (4) enabling condition monitoring according to claim 1,
the filter (406) is a GFF filter.
4. A remote passive gain module (4) enabling condition monitoring according to claim 1,
both the microcontroller unit and the wireless communication module support a sleep mode.
5. A remote passive gain module (4) enabling condition monitoring according to claim 1,
the wireless communication module adopts a 3G/4G communication module or an NB-IoT wireless communication module.
6. A unrepeatered transmission system comprising a remote passive gain module, comprising: a transmitting end (1), a power amplifier (2), a first transmission fiber (3), a remote passive gain module (4) according to any one of claims 1-5, a second transmission fiber (5), a third signal pump combiner (6), a preamplifier (7), a receiving end (8), and a remote pump unit (9);
the transmitting end (1) is connected with the input end of the power amplifier (2), the output end of the power amplifier (2) is connected with one end of a first transmission optical fiber (3), the other end of the first transmission optical fiber (3) is connected with the input end of a remote passive gain module (4), the output end of the remote passive gain module (4) is connected with one end of a second transmission optical fiber (5), the other end of the second transmission optical fiber (5) is connected with the common end of a third signal pump combiner (6), the reflection end of the third signal pump combiner (6) is connected with a remote pump unit (9), the signal end is connected with the input end of a preamplifier (7), and the output end of the preamplifier (7) is connected with a receiving end (8).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266376A (en) * | 2019-07-12 | 2019-09-20 | 无锡瀚诺光电科技有限公司 | It is able to achieve the remote passive gain module and repeatless transmission system of condition monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266376A (en) * | 2019-07-12 | 2019-09-20 | 无锡瀚诺光电科技有限公司 | It is able to achieve the remote passive gain module and repeatless transmission system of condition monitoring |
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