CN208299907U - RFoG transponder - Google Patents
RFoG transponder Download PDFInfo
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- CN208299907U CN208299907U CN201820583518.6U CN201820583518U CN208299907U CN 208299907 U CN208299907 U CN 208299907U CN 201820583518 U CN201820583518 U CN 201820583518U CN 208299907 U CN208299907 U CN 208299907U
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- uplink
- interleaver
- optical
- optical signal
- photoreceiver
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Abstract
The utility model discloses a kind of RFoG transponder, comprising: the second interleaver, optical splitter and the first optical splitter set gradually along downlink optical signal；The first interleaver, uplink photoreceiver, RF mixing, uplink optical sender and the second interleaver set gradually along uplink signal direction, first interleaver and the second interleaver are shared by the downlink optical signal and uplink optical signal；Downlink optical signal enters in the optical splitter through the second interleaver, after being divided into multichannel by optical splitter, issues through first interleaver；Uplink optical signal enters in uplink photoreceiver through first interleaver, uplink optical signal is transferred in the RF mixing by uplink photoreceiver, RF mixing by the multichannel upstream radio-frequency signal received be mixed into all the way and export to uplink optical sender input terminal and output optical signal, the uplink optical sender by uplink optical signal issued through the second interleaver；Eliminate the optical beat interference problem in photoreceiver.
Description
Technical field
The utility model relates to optical fiber radio frequency transmission field, in particular to a kind of RFoG transponder.
Background technique
In traditional cable TV two-way network networking, for each optical node, require at least to return optical fiber all the way
With a reversed passback receiver, when optical node quantity increases, the number of optical fiber required for reversed passback and passback receiver
Amount is just very big, and cost is also very high.Using RFoG (optical fiber radio frequency transmission) equipment network, equipment and number of fibers subtract significantly
It is few, thus cost is also greatly lowered, since RFoG optical node return laser is using burst mode, at any time only
As soon as there is a return laser working, influx noise is not present in this way for network, but produces OBI again simultaneously
The problem of (optical beat interference), it is resulted from photoreceiver.
Utility model content
The utility model provides a kind of transponder, to solve the above-mentioned technical problems in the prior art.
In order to solve the above technical problems, the utility model provides a kind of RFoG transponder, comprising: successively along downlink optical signal
The second interleaver, optical splitter and the first optical splitter being arranged；Along the first interleaver that uplink signal direction is set gradually, on
Row photoreceiver, RF mixing, uplink optical sender and the second interleaver, first interleaver and the second interleaver are by institute
It states downlink optical signal and uplink optical signal shares；Downlink optical signal enters in the optical splitter through the second interleaver, by light
After splitter is divided into multichannel, issued through first interleaver.Uplink optical signal enters uplink linght through first interleaver
In receiver, uplink optical signal is transferred in the RF mixing by uplink photoreceiver, and RF mixing will receive
Multichannel upstream radio-frequency signal is mixed into all the way and exports to the input terminal of uplink optical sender and output optical signal, the uplink linght
Transmitter by uplink optical signal issued through the second interleaver；
Preferably, first interleaver and uplink photoreceiver are provided with 8 groups or 16 groups.
Preferably, the RF mixing is 8 road RF mixings or 16 road RF mixings.
Preferably, the optical splitter is No. 8 optical splitters or No. 16 optical splitters.
Preferably, further including power supply.
Preferably, further include two groups of LED displays, wherein one group of LED display setting the first interleaver with
Between uplink photoreceiver, another set is arranged between uplink optical sender and the second interleaver.
Compared with prior art, the signal of uplink and downlink is mixed splitting or integrating by radio frequency by the RFoG transponder of the utility model
Optical beat interference is eliminated in road, the mixing of optical signal, branch, the reception of optical signal and transmitting, so that multiple mac domains and multiple high
Performance uplink signal can be run in a RFoG environment.The utility model can also be effective using all available upstream bandwidths
Complete 3.1 channel of DOCSIS binding is disposed, allows multiple uplink RF transmissions, to support higher user's permeability.
Detailed description of the invention
Fig. 1 is the circuit diagram of the RFoG transponder of the utility model.
It is as shown in the figure: the first interleaver of 10-, 20- uplink photoreceiver, 30- RF mixing, 40- uplink optical sender,
The second interleaver of 50-, 60- optical splitter.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.It should be noted that the utility model attached drawing is all made of simplified form
And non-accurate ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.
As shown in Figure 1, the utility model provides a kind of RFoG transponder, comprising: the first interleaver 10, uplink photoreceiver
20, RF mixing 30, uplink optical sender 40, the second interleaver 50 and optical splitter 60.Wherein, second interleaver
50, optical splitter 60 and first interleaver 10 are set gradually along downlink optical signal direction.First interleaver 10, uplink linght connect
Receipts machine 20, RF mixing 30, uplink optical sender 40 and the second interleaver 50 are set gradually along uplink signal direction, specifically
Ground, downlink optical signal enter in the optical splitter 60 through the second interleaver 50, are divided by optical splitter 60 for after multichannel, through institute
The first interleaver 10 is stated to distribute out.Uplink optical signal is entered in uplink photoreceiver 20 and is converted through first interleaver 50
For radiofrequency signal, upstream radio-frequency signal is transferred in the RF mixing 30 by uplink photoreceiver 20, RF mixing 30
The multichannel upstream radio-frequency signal received is mixed into all the way and is exported to uplink optical sender 40, the uplink optical sender 40
Mixed uplink optical signal is issued through the second interleaver 50；The RFoG transponder of the utility model believes the light of uplink and downlink
It number is mixed, optical beat interference is eliminated in the mixing of branch, radio frequency, the reception of optical signal and transmitting.
Further, first interleaver 10 and uplink photoreceiver 20 are provided with 8 groups, 16 groups, 32 groups or 64 groups；
Correspondingly, the RF mixing 30 is 8 tunnels, 16 tunnels, 32 tunnels or 64 road RF mixings；The optical splitter 60 be 8 tunnels,
16 tunnels, 32 tunnels or 64 optical splitters.16 paths are preferably used in the utility model.That is, downlink optical signal is through the second wavelength-division
Device 50 enters in No. 16 optical splitters, is divided into 16 road downlink optical signals and then issues through corresponding first interleaver 10.16
Road traveling optical signal passes through 16 group of first interleaver 10 respectively and uplink photoreceiver 20 enters 16 road RF mixings jointly
In, after being mixed into all the way, then machine 40 is occurred by uplink linght and is issued.
Preferably, the RFoG transponder of the utility model further includes power supply, the power supply is used to supply for above-mentioned each device
Electricity.
Preferably, the RFoG transponder of the utility model further includes two groups of LED display (not shown)s, wherein
One group of LED display is arranged between the first interleaver 10 and uplink photoreceiver 20, and another set setting is sent out in uplink linght
It penetrates between machine 40 and the second interleaver 50, is used to indicate the state of light input and light output.
In conclusion the RFoG transponder of the utility model, the signal of uplink and downlink is mixed by radio frequency, optical signal it is mixed
Splitting or integrating road, the reception of optical signal and transmitting are interfered to eliminate optical beat, so that multiple mac domains and multiple high-performance uplink signals
It can be run in a RFoG environment.The utility model can also effectively be disposed completely using all available upstream bandwidths
The binding of 3.1 channel of DOCSIS, allows multiple uplink RF transmissions, to support higher user's permeability.
Obviously, it is practical new without departing from this can to carry out various modification and variations to utility model by those skilled in the art
The spirit and scope of type.If in this way, these modifications and variations of the present invention belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (6)
1. a kind of RFoG transponder characterized by comprising the second interleaver for being set gradually along downlink optical signal, optical branching
Device and the first optical splitter；The first interleaver for being set gradually along uplink signal direction, uplink photoreceiver, RF mixing,
Uplink optical sender and the second interleaver, first interleaver and the second interleaver are believed by the downlink optical signal and uplink linght
Number share；Downlink optical signal enters in the optical splitter through the second interleaver, after being divided into multichannel by optical splitter, through described
First interleaver issues；Uplink optical signal enters in uplink photoreceiver through first interleaver, and uplink photoreceiver will
Uplink optical signal is transferred in the RF mixing, and the multichannel upstream radio-frequency signal received is mixed into one by RF mixing
Road is simultaneously exported to the input terminal of uplink optical sender and output optical signal, the uplink optical sender by uplink optical signal through the
Two interleavers issue.
2. RFoG transponder as described in claim 1, which is characterized in that first interleaver and the setting of uplink photoreceiver
There are 8 groups or 16 groups.
3. RFoG transponder as claimed in claim 2, which is characterized in that the RF mixing be 8 road RF mixings or
16 road RF mixing of person.
4. RFoG transponder as claimed in claim 2, which is characterized in that the optical splitter is No. 8 optical splitters or 16
Road optical splitter.
5. RFoG transponder as described in claim 1, which is characterized in that further include power supply.
6. RFoG transponder as described in claim 1, which is characterized in that further include two groups of LED displays, wherein one group
LED display is arranged between the first interleaver and uplink photoreceiver, and another set setting is in uplink optical sender and the
Between two interleavers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583518.6U CN208299907U (en) | 2018-04-23 | 2018-04-23 | RFoG transponder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583518.6U CN208299907U (en) | 2018-04-23 | 2018-04-23 | RFoG transponder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208299907U true CN208299907U (en) | 2018-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820583518.6U Active CN208299907U (en) | 2018-04-23 | 2018-04-23 | RFoG transponder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208299907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971882A (en) * | 2019-12-11 | 2020-04-07 | 广东东研网络科技股份有限公司 | CMTS fiber-to-the-home method |
-
2018
- 2018-04-23 CN CN201820583518.6U patent/CN208299907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971882A (en) * | 2019-12-11 | 2020-04-07 | 广东东研网络科技股份有限公司 | CMTS fiber-to-the-home method |
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