CN108337066A - Optic fiber converter and fibre-optic transmission system (FOTS) - Google Patents
Optic fiber converter and fibre-optic transmission system (FOTS) Download PDFInfo
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- CN108337066A CN108337066A CN201711442527.XA CN201711442527A CN108337066A CN 108337066 A CN108337066 A CN 108337066A CN 201711442527 A CN201711442527 A CN 201711442527A CN 108337066 A CN108337066 A CN 108337066A
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- China
- Prior art keywords
- optical
- division multiplexing
- wavelength division
- optical circulator
- light wavelength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0279—WDM point-to-point architectures
Abstract
A kind of optic fiber converter of present invention offer and fibre-optic transmission system (FOTS), the optic fiber converter include：First optical circulator, the second optical circulator and light wavelength division multiplexing；The T-port of first optical circulator is used to input the optical signal of first wave length, the ports R of first optical circulator are used to export the optical signal of the first wave length of the first branch port input of light wavelength division multiplexing, and the first ports com of the first optical circulator are connected with the first branch port of light wavelength division multiplexing；The T-port of second optical circulator is used to input the optical signal of second wave length, the ports R of second optical circulator are used to export the optical signal of the second wave length of light wavelength division multiplexing the second branch port input, and the 2nd ports com of the second optical circulator are connected with the second branch port of light wavelength division multiplexing.Based on the optic fiber converter of the present invention, optical fiber 1 may be implemented:4 dilatation, while the optic fiber converter of the present invention has many advantages, such as at low cost, compact-sized, highly practical, reliable and stable, easy care.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of optic fiber converter and fibre-optic transmission system (FOTS).
Background technology
As described in Figure 1, in the prior art, optical transmission device A and the optical transmission device A ' of opposite end carry out fiber optic communication, need
Build two optical fiber links.One end of wherein one optical fiber link is connected with the output port (T-port) of optical transmission device A, separately
One end is connected with the input port (ports R) of optical transmission device A '.One end of another optical fiber link is defeated with optical transmission device A's
Inbound port (ports R) is connected, and the other end is connected with the output port (T-port) of optical transmission device A '.
When optical transmission device and more and more opposite end optical transmission device, it is necessary to more and more optical fiber links are built,
So not only communications cost is high, but also there is also the problems of later maintenance difficulty.
In view of the above-mentioned problems, currently no effective solution has been proposed.
Invention content
A kind of optic fiber converter of present invention offer and fibre-optic transmission system (FOTS) can solve current optical transmission device and be passed with opposite end
Transfer device directly by fiber optic communication there are the problem of.
The present invention provides a kind of optic fiber converter, the optic fiber converter include the first optical circulator, the second optical circulator and
Light wavelength division multiplexing；
The optical signal of first wave length is inputted from the T-port of the first optical circulator, via the first ends com of the first optical circulator
Mouthful output is to the first branch port of light wavelength division multiplexing, and light wavelength division multiplexing is by the optical signal of the first wave length of input from third
The ports com export；Light wavelength division multiplexing will be input to the optical signal of the first wave length of the 3rd ports com, and output is multiple to light wave point
With the first branch port of device, the first optical circulator is input to via the first ports com of the first optical circulator, and from the first light
The ports R of circulator export；
The optical signal of second wave length is inputted from the T-port of the second optical circulator, via the 2nd ends com of the second optical circulator
Mouthful output is to the second branch port of light wavelength division multiplexing, and light wavelength division multiplexing is by the optical signal of the second wave length of input from third
The ports com export；Light wavelength division multiplexing will be input to the optical signal of the second wave length of the 3rd ports com, and output is multiple to light wave point
With the second branch port of device, the second optical circulator is input to via the 2nd ports com of the second optical circulator, and from the second light
The ports R of circulator export.
The present invention also provides a kind of fibre-optic transmission system (FOTS), which includes the first optic fiber converter proposed by the present invention and
Two optic fiber converters：3rd ports com of the first light wavelength division multiplexing in the first optic fiber converter pass through optical fiber and the second light
3rd ports com of the second light wavelength division multiplexing in fine converter are connected.
Based on the optic fiber converter and fibre-optic transmission system (FOTS) of the present invention, optical fiber 1 may be implemented:(optical fiber is worked as 4 dilatation
4 optical fiber are used, and are equivalent to and are improved 4 times of fiber utilization), while the optic fiber converter of the present invention has at low cost, structure
The advantages that compact, highly practical, reliable and stable, easy care.
Description of the drawings
Fig. 1 is the communication scheme of optical transmission device and opposite end optical transmission device in the prior art；
Fig. 2 is the structure chart of optic fiber converter of the present invention；
Fig. 3 is the structure chart of fibre-optic transmission system (FOTS) of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
As shown in Fig. 2, the present invention provides a kind of optic fiber converter, the optic fiber converter include the first optical circulator (100),
Second optical circulator (200) and light wavelength division multiplexing (300).
The optical signal of first wave length is inputted from the T-port of the first optical circulator (100), via the first optical circulator (100)
The first ports com export to light wavelength division multiplexing WDM (in Wavelength Division Multiplexing, Fig. 2
300) first branch port；Light wavelength division multiplexing WDM (300) is by the optical signal of the first wave length of input from the 3rd ports com
Output.
Light wavelength division multiplexing WDM (300) will be input to the optical signal of the first wave length of the 3rd ports com, output to light wave
The first branch port of division multiplexer is input to the first optical circulator via the first ports com of the first optical circulator (100)
(100), it and from the ports R of the first optical circulator (100) exports.
The optical signal of second wave length is inputted from the T-port of the second optical circulator (200), via the second of the second optical circulator
The ports com are exported to the second branch port of light wavelength division multiplexing WDM (300), and light wavelength division multiplexing WDM (300) is by input
The optical signal of second wave length is exported from the 3rd ports com.
Light wavelength division multiplexing WDM (300) will be input to the optical signal of the second wave length of the 3rd ports com, output to light wave
The second branch port of division multiplexer WDM (300) is input to the second light via the 2nd ports com of the second optical circulator (200)
Circulator (200), and exported from the ports R of the second optical circulator (200).
In fig. 2, the T-port of the first optical circulator (100) is used to input the optical signal of first wave length, the first optical circulator
(100) the ports R are used to export the optical signal of the first wave length of WDM first branchs port input, the first optical circulator (100)
First ports com are connected with the first branch port of light wavelength division multiplexing WDM (300).
The T-port of second optical circulator (200) is used to input the optical signal of second wave length, the R of the second optical circulator (200)
Port is used to export the optical signal of the second wave length of WDM the second branches port input, the 2nd com of the second optical circulator (200)
Port is connected with the second branch port of light wavelength division multiplexing WDM (300).
Optionally, first wave length be 1280nm to 1340nm within the scope of any wavelength, second wave length be 1520nm extremely
Any wavelength within the scope of 1580nm.
Light wavelength division multiplexing is Coarse Wave Division Multiplexer.
It is below 1310nm with first wave length and operation principle that second wave length is 1550nm definition graphs 2.
As shown in Fig. 2, the first Optical circulator (100) is the optical circulator of 1310nm, the incident light of T-port enters circulator
Afterwards, it can only be exported from the first ports com on right side, without being exported from the ports R.The light entered from the first ports com, can only
It is exported from the ports R, without being exported from T-port.In this way, the first ports com of the first optical circulator (100) by sending and receiving light
Signal separates, and realizes optical fiber 1：2 dilatations (1 optical fiber is when two optical fiber use).
Second optical circulator (200) is the optical circulator of 1550nm, the optical circulator principle of operation principle and 1310nm
Unanimously, it is 1550nm difference lies in its operation wavelength.
Light wavelength division multiplexing WDM (300) in Fig. 2 is provided simultaneously with the function of wave multiplexer and channel-splitting filter.WDM can will come from
The photosynthesis of the light of 1280nm~1340nm of first ports com and 1520nm~1580nm from the 2nd ports com are a branch of
Light is simultaneously exported by the 3rd ports com (main line port) of WDM, while the filter of WDM can also be by the 3rd ports com (main line
Port) input the light of 1280nm~1340nm wavelength and the light of 1520nm~1580nm wavelength distinguish, and be sent to correspondence
The optical circulator of wavelength.
The optic fiber converter of Fig. 2, the first optical circulator can be connected with an optical transmission device, and the second optical circulator can be with
It is connected with another optical transmission device, passes through the light of one optical fiber link and opposite end of light wavelength division multiplexing WDM (300) ports com
Transmission device connects, and can so realize optical fiber 1:(optical fiber is used when 4 optical fiber, is equivalent to and is improved 4 times for 4 dilatations
Fiber utilization), while the optic fiber converter of the present invention has at low cost, compact-sized, highly practical, reliable and stable, Yi Wei
The advantages that shield.
The 3rd ports com (main line port) of light wavelength division multiplexing WDM (300) use inclined-plane optical connector, avoid trunk
Optical fiber generates the reflection of a large amount of optical signal when not connected, cause the internal loopback problem of the optic fiber converter of Fig. 2, influence this Shen
Please optic fiber converter performance.
Based on the optic fiber converter of the present invention, the present invention also proposes a kind of fibre-optic transmission system (FOTS), as shown in figure 3, including 2
Optic fiber converter：First optic fiber converter and the second optic fiber converter, the first optic fiber converter and the second optic fiber converter pass through
One trunk optical fiber link connection, i.e. main line port (the 3rd ends com of the first light wavelength division multiplexing in the first optic fiber converter
Mouthful) pass through main line port (the 3rd ports the com phase of trunk optical fiber link and the second light wavelength division multiplexing of the second optic fiber converter
Even, in order to be distinguished to show, the 3rd ports com of the second light wavelength division multiplexing are set as the 3rd ports * com).
As shown in figure 3, the output optical signal of optical transmission device A inputs the of the 1310nm of the first optic fiber converter (110)
One optical circulator inputs the first WDM (310) of the first optic fiber converter by the first ports com of the optical circulator of 1310nm,
Reach the 2nd WDM (320) of the second optic fiber converter by backbone optical cable link, the 2nd WDM (320) filters out the light of 1310nm
The first optical circulator (120) that optical signal is inputted to the 1310nm of the second optic fiber converter after signal, from the first light of 1310nm
The ports R of circulator (120) export.Similarly negative direction and 1550nm light paths are also such.
Table 1, which is current optical circulator or light wavelength division multiplexing, can reach technological level；Assuming that the optical fiber transmission system of Fig. 3
As long as system is operated in 2.5Gbit/s rates hereinafter, so ensureing optical power budget (such as the output of local terminal optical transmission device enough
The input optical power that luminous power subtracts opposite end optical transmission device is more than 5dB), so that it may to support to make in current optical transport network
Optical fiber dilatation is carried out with the optical transmission system of Fig. 3 of the present invention, does not influence business transmission.
Table 1
The foregoing is merely illustrative of the preferred embodiments of the present invention, not to limit the present invention scope, it is all
Within the spirit and principle of technical solution of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection domain.
Claims (4)
1. a kind of optic fiber converter, which is characterized in that the optic fiber converter include the first optical circulator, the second optical circulator and
Light wavelength division multiplexing；
The optical signal of first wave length is inputted from the T-port of first optical circulator, via the first of first optical circulator
The ports com are exported to the first branch port of the light wavelength division multiplexing, and the light wavelength division multiplexing is by described the first of input
The optical signal of wavelength is exported from the 3rd ports com；The light wavelength division multiplexing will be input to the first wave length of the 3rd ports com
Optical signal is exported to the first branch port of the light wavelength division multiplexing, via the first ports com of first optical circulator
It is input to first optical circulator, and is exported from the ports R of first optical circulator；
The optical signal of second wave length is inputted from the T-port of second optical circulator, via the second of second optical circulator
The ports com are exported to the second branch port of the light wavelength division multiplexing, and the light wavelength division multiplexing is by described the second of input
The optical signal of wavelength is exported from the 3rd ports com；The light wavelength division multiplexing will be input to the second wave length of the 3rd ports com
Optical signal is exported to the second branch port of the light wavelength division multiplexing, via the 2nd ports com of second optical circulator
It is input to second optical circulator, and is exported from the ports R of second optical circulator.
2. optic fiber converter according to claim 1, which is characterized in that the first wave length is 1280nm to 1340nm models
Interior any wavelength is enclosed, the second wave length is any wavelength within the scope of 1520nm to 1580nm.
3. optic fiber converter according to claim 1, which is characterized in that the 3rd ports com of the light wavelength division multiplexing
Using inclined-plane optical connector.
4. a kind of fibre-optic transmission system (FOTS), which is characterized in that include at least the first optical fiber as described in any one of claims 1-3 and convert
Device and the second optic fiber converter；
3rd ports com of the first light wavelength division multiplexing in first optic fiber converter pass through optical fiber and second optical fiber
3rd ports com of the second light wavelength division multiplexing in converter are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442527.XA CN108337066A (en) | 2017-12-27 | 2017-12-27 | Optic fiber converter and fibre-optic transmission system (FOTS) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442527.XA CN108337066A (en) | 2017-12-27 | 2017-12-27 | Optic fiber converter and fibre-optic transmission system (FOTS) |
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| CN108337066A true CN108337066A (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711442527.XA Pending CN108337066A (en) | 2017-12-27 | 2017-12-27 | Optic fiber converter and fibre-optic transmission system (FOTS) |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088643A (en) * | 2009-12-03 | 2011-06-08 | 中兴通讯股份有限公司 | Optical selection router |
| CN103324002A (en) * | 2013-06-06 | 2013-09-25 | 大连理工大学 | Reconfigurable single-band-pass microwave photon filtering system and method |
| CN103916191A (en) * | 2012-12-31 | 2014-07-09 | 上海贝尔股份有限公司 | Method and apparatus for optical access network |
| CN104579536A (en) * | 2014-12-16 | 2015-04-29 | 北京邮电大学 | Uplink and downlink channel reusing wavelength division multiplexing passive optical network system |
-
2017
- 2017-12-27 CN CN201711442527.XA patent/CN108337066A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088643A (en) * | 2009-12-03 | 2011-06-08 | 中兴通讯股份有限公司 | Optical selection router |
| CN103916191A (en) * | 2012-12-31 | 2014-07-09 | 上海贝尔股份有限公司 | Method and apparatus for optical access network |
| CN103324002A (en) * | 2013-06-06 | 2013-09-25 | 大连理工大学 | Reconfigurable single-band-pass microwave photon filtering system and method |
| CN104579536A (en) * | 2014-12-16 | 2015-04-29 | 北京邮电大学 | Uplink and downlink channel reusing wavelength division multiplexing passive optical network system |
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