CN201830410U - Passive optical network (PON) terminal - Google Patents
Passive optical network (PON) terminal Download PDFInfo
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- CN201830410U CN201830410U CN2010205784775U CN201020578477U CN201830410U CN 201830410 U CN201830410 U CN 201830410U CN 2010205784775 U CN2010205784775 U CN 2010205784775U CN 201020578477 U CN201020578477 U CN 201020578477U CN 201830410 U CN201830410 U CN 201830410U
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Abstract
The utility model discloses a passive optical network (PON) terminal, comprising an optical-electric conversion module (10), a PON protocol chip and a periphery circuit (20), an Ethernet serial-parallel conversion chip SERDES (30), and an optical module SFP interface (40), wherein the optical-electric conversion module (10) is connected with the PON protocol chip and the periphery circuit (20), and the optical module SFP interface (40); and the Ethernet serial-parallel conversion module SERDES (30) is connected with the PON protocol chip, the periphery circuit (20) and the optical module SFP interface (40). The PON terminal is mainly used for integrating the optical-electric conversion module and a PONMAC chip in an SFP package.
Description
Technical field
The utility model discloses a kind of passive light network terminal, relate in particular to a kind of Ethernet passive optical network EPON(Ethernet Passive Optical Networks) passive light network terminal of technology.
Background technology
Along with the demand of data service to bandwidth constantly increases, these application comprise high definition IPTV broadcasting and multimedia delivery system etc., and the EPON technology has obtained using widely.Main application structure is shown in Figure 1, and local side OLT is received respectively on the ONT box by optical branching device, and the ONT box provides network interface or optical fiber interface according to the requirement of subscriber exchange.Subscriber exchange has designed the SFP socket, and the SFP module of optional insertion electricity mouthful SFP or opto-electronic conversion links to each other with the ONT box by twisted-pair feeder or optical fiber respectively.
Write a Chinese character in simplified form explanation:
(ONT Optical Network Termination)---Optical Network Terminal;
(SFP Small Form Factor Pluggable)---optical module;
(MAC Media Access Control)---media interviews control;
(OLT Optical Line Termination)---fibre-optic terminus;
(EPON Ethernet Passive Optical Networks)---Ethernet passive optical network;
(OAM Operation, Administration and Maintenance)---run, administer and maintain;
(TBI Ten-Bit interface)---10bit interface, a kind of standard interface between ethernet data link layer and the physical layer;
This application structure of Fig. 1 has been utilized existing switching equipment preferably, but has increased wiring when mounted, and switch can't manage and to the temperature of ONT, performances such as sending and receiving luminous power are monitored the ONT box.
The ONT cassette interior is general to adopt common ONT optical module, and the circuit of this ONT optical module is as shown in the frame of broken lines among Fig. 3, and up direction LDD drives high speed signal, and optical transceiver BOSA converts the output of 1310nm light signal to; Down direction optical transceiver BOSA converts the 1490nm light signal of OLT output to the signal of telecommunication, the output high-speed-differential signal of telecommunication after LA amplifies.
The utility model content
It is more that the utility model has solved in the prior art when stage casing, light networking is installed wiring, and switch can't manage the ONT box, to the temperature of ONT, and the technical problem that performances such as sending and receiving luminous power are monitored.
The utility model provides a kind of passive light network terminal, comprise photoelectric conversion module 10, PON protocol chip and peripheral circuit 20, Ethernet string and conversion chip SERDES30, optical module SFP interface 40, described photoelectric conversion module 10 and described PON protocol chip and peripheral circuit 20, optical module SFP interface 40 are connected, and described Ethernet string and conversion chip SERDES30 and described PON protocol chip and peripheral circuit 20, optical module SFP interface 40 are connected.
Described photoelectric conversion module comprises optical transceiver BOSA11, laser driver LDD12, limiting amplifier LA13, and described laser driver LDD12, limiting amplifier LA13 are connected with described optical transceiver BOSA11, described control unit MCU2 respectively.Described optical transceiver BOSA11, laser driver LDD12, limiting amplifier LA13, PON protocol chip and peripheral circuit 20, Ethernet string and conversion chip SERDES30, control unit MCU14 are whole body structures.The built-in back facet current testing circuit of described optical transmitter BOSA11.Integrated optical receiver bias voltage interface among the described limiting amplifier LA13.TX_BURST is a laser burst enable signal, and TX_FAULT is the laser fails alarm signal, and Los is the alarm signal that receiving optical signals is lower than threshold value, and TX_DIS is a signal of forcing to close laser.Be connected by the TBI interface between described PON protocol chip and peripheral circuit 20 and described Ethernet string and the conversion chip SERDES30.Peripheral circuit in described PON protocol chip and the peripheral circuit 20 comprises circuit such as clock, memory.The power supply that described optical module SFP interface 40 receives external transmission is about to close alarm signal Dying Gasp and is transferred to the PON protocol chip, and the PON protocol chip is given OLT by the OAM message reporting.Described PON protocol chip and peripheral circuit 20 are supported the authentication function of " EPON of China Telecom equipment and technology requires V2.1 " LOID.
The beneficial effects of the utility model are: the SFP module in the switch socket is replaced with optical module of the present utility model, just can directly the network layout structure be simplified to Fig. 2 from Fig. 1, need not other power supply, place ONT box and line, and can finish numerical diagnostic monitoring functions such as temperature, voltage, received optical power, transmitting optical power in this locality.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is for shown in the existing main application structure of EPON technology;
Fig. 2 uses schematic diagram with the network layout structure from the utility model that Fig. 1 simplifies;
Fig. 3 is the technical solution of the utility model schematic diagram.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The main application structure of EPON technology in the prior art as shown in Figure 1, local side OLT is received respectively on the ONT box by optical branching device, and the ONT box provides network interface or optical fiber interface according to the requirement of subscriber exchange.Subscriber exchange has designed the SFP socket, and the SFP module of optional insertion electricity mouthful SFP or opto-electronic conversion links to each other with the ONT box by twisted-pair feeder or optical fiber respectively.
As shown in Figure 2 the network layout structure is used schematic diagram from the utility model that Fig. 1 simplifies, wherein the SFP module in the switch socket is replaced with optical module of the present utility model.Need not other power supply, place ONT box and line, can finish temperature, voltage, received optical power, numerical diagnostic monitoring functions such as transmitting optical power in this locality.
As shown in Figure 3, the utility model provides a kind of passive light network terminal, comprise photoelectric conversion module 10, PON protocol chip and peripheral circuit 20, Ethernet string and conversion chip SERDES30, optical module SFP interface 40, described photoelectric conversion module 10 and described PON protocol chip and peripheral circuit 20, optical module SFP interface 40 are connected, and described Ethernet string and conversion chip SERDES30 and described PON protocol chip and peripheral circuit 20, optical module SFP interface 40 are connected.Described photoelectric conversion module comprises optical transceiver BOSA11, laser driver LDD12, limiting amplifier LA13, and described laser driver LDD12, limiting amplifier LA13 are connected with described optical transceiver BOSA11, described control unit MCU14 respectively.Described optical transceiver BOSA11, laser driver LDD12, limiting amplifier LA13, PON protocol chip and peripheral circuit 20, Ethernet string and conversion chip SERDES30, control unit MCU14 are whole body structures.
The built-in back facet current testing circuit of described optical transmitter BOSA11, back facet current is proportional to the BOSA Output optical power, by the back facet current detected value, can calculate the BOSA Output optical power.Integrated optical receiver bias voltage interface among the described limiting amplifier LA13, BOSA is converted to electric current with the light signal that receives and imports this interface, and the big I of limiting amplifier sample rate current value calculates the received optical power value.
Described PON protocol chip and peripheral circuit 20 are finished the processing of EPON agreement IEEE 802.3ah.Described Ethernet string and conversion chip SERDES30 directly export high-speed differential signal TX_DATA to LDD, and receive the high-speed differential signal RX_DATA that LA sends here.TX_BURST is the signal that PON protocol chip and peripheral circuit 20 enable optical transmitter burst light, and TX_FAULT is the laser fails alarm signal, and Los is the alarm signal that receiving optical signals is lower than threshold value, and TX_DIS is a signal of forcing to close laser.Dying Gasp is that the power supply that the SFP outside provides is about to close alarm signal, and the power supply that described optical module SFP interface 40 receives external transmission is about to close alarm signal and is connected to PON MAC chip.After PON MAC chip receives alarm, give OLT by the OAM message reporting.PON MAC chip can be supported the authentication function of " EPON of China Telecom equipment and technology requires V2.1 " LOID.Its peripheral circuit includes but not limited to clock, memory circuitry etc.And be the TBI interface between Ethernet string and the conversion chip (SERDES), SERDES finishes string and conversion is exported and input high-speed-differential ethernet signal to the SFP interface.
The utility model patent provides the Ethernet passive optical network terminal SFP of a kind of MAC of carrying, and main purpose is that common ONT opto-electronic conversion optical module and PON MAC chip are integrated in the SFP encapsulation.The SFP package module that the utility model provides can read DDM (digital diagnostic monitoring) data by the I2C interface, and the performance of monitoring optical module is also supported Dying Gasp alarm and " EPON of China Telecom equipment and technology requires V2.1 " LOID authentication function.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (7)
1. passive light network terminal, it is characterized in that: comprise photoelectric conversion module (10), PON protocol chip and peripheral circuit (20), Ethernet string and conversion chip SERDES (30), optical module SFP interface (40), described photoelectric conversion module (10) and described PON protocol chip and peripheral circuit (20), optical module SFP interface (40) are connected, and described Ethernet string and conversion chip SERDES (30) and described PON protocol chip and peripheral circuit (20), optical module SFP interface (40) are connected.
2. passive light network terminal as claimed in claim 1, it is characterized in that described photoelectric conversion module comprises optical transceiver BOSA (11), laser driver LDD (12), limiting amplifier LA (13), described laser driver LDD (12), limiting amplifier LA (13) are connected with described optical transceiver BOSA (11), described control unit MCU (2) respectively.
3. passive light network terminal as claimed in claim 2, its feature is a whole body structure at being set forth in optical transceiver BOSA (11), laser driver LDD (12), limiting amplifier LA (13), PON protocol chip and peripheral circuit (20), Ethernet string and conversion chip SERDES (30), control unit MCU (14).
4. passive light network terminal as claimed in claim 3 is characterized in that the built-in back facet current testing circuit of described optical transmitter BOSA (11).
5. passive light network terminal as claimed in claim 4 is characterized in that integrated optical receiver bias voltage interface among the described limiting amplifier LA (13).
6. passive light network terminal as claimed in claim 5 is characterized in that: be connected by the TBI interface between described PON protocol chip and peripheral circuit (20) and described Ethernet string and the conversion chip SERDES (30).
7. passive light network terminal as claimed in claim 6 is characterized in that: the peripheral circuit in described PON protocol chip and the peripheral circuit (20) comprises clock, memory circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205784775U CN201830410U (en) | 2010-10-27 | 2010-10-27 | Passive optical network (PON) terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205784775U CN201830410U (en) | 2010-10-27 | 2010-10-27 | Passive optical network (PON) terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201830410U true CN201830410U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205784775U Expired - Lifetime CN201830410U (en) | 2010-10-27 | 2010-10-27 | Passive optical network (PON) terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201830410U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188014A (en) * | 2013-04-12 | 2013-07-03 | 深圳市共进电子股份有限公司 | PON (passive optical network) ONU (optical network unit) BOB (BOSA-on-board) product with test loop |
| CN103281240A (en) * | 2013-06-17 | 2013-09-04 | 苏州优康网络电子商务有限公司 | Gateway equipment of domestic optical network |
| CN103731204A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Optical network terminal with temperature monitoring function |
| CN104954074A (en) * | 2014-04-04 | 2015-09-30 | 贵州电网公司六盘水供电局 | GEPON optical repeater core circuit realization method |
| CN107819349A (en) * | 2016-09-13 | 2018-03-20 | 南京中兴软件有限责任公司 | SFP energy storage method, device, system and SFP |
-
2010
- 2010-10-27 CN CN2010205784775U patent/CN201830410U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188014A (en) * | 2013-04-12 | 2013-07-03 | 深圳市共进电子股份有限公司 | PON (passive optical network) ONU (optical network unit) BOB (BOSA-on-board) product with test loop |
| CN103281240A (en) * | 2013-06-17 | 2013-09-04 | 苏州优康网络电子商务有限公司 | Gateway equipment of domestic optical network |
| CN103731204A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Optical network terminal with temperature monitoring function |
| CN104954074A (en) * | 2014-04-04 | 2015-09-30 | 贵州电网公司六盘水供电局 | GEPON optical repeater core circuit realization method |
| CN104954074B (en) * | 2014-04-04 | 2017-09-26 | 贵州电网公司六盘水供电局 | A kind of GEPON optical repeaters core circuit realizes device |
| CN107819349A (en) * | 2016-09-13 | 2018-03-20 | 南京中兴软件有限责任公司 | SFP energy storage method, device, system and SFP |
| CN107819349B (en) * | 2016-09-13 | 2023-09-05 | 中兴通讯股份有限公司 | Energy storage method, device and system of SFP ONU optical module |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |