CN103731227A - Novel bidirectional optical add-drop multiplexer - Google Patents
Novel bidirectional optical add-drop multiplexer Download PDFInfo
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- CN103731227A CN103731227A CN201410002968.8A CN201410002968A CN103731227A CN 103731227 A CN103731227 A CN 103731227A CN 201410002968 A CN201410002968 A CN 201410002968A CN 103731227 A CN103731227 A CN 103731227A
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Abstract
The invention discloses a novel bidirectional optical add-drop multiplexer. A common port of a first dense wavelength division multiplexing module is connected with an external first multiplexing port, a reflection port of the first dense wavelength division multiplexing module is connected with a reflection port of a second dense wavelength division multiplexing module, and a common port of the second dense wavelength division multiplexing module is connected with an external second multiplexing port. A first selection port of the first dense wavelength division multiplexing module and a first selection port of the second dense wavelength division multiplexing module are connected with two shunt ports of a first optical switch set of a D 1*2 optical switch respectively, and a second selection port of the first dense wavelength division multiplexing module and a second selection port of the second dense wavelength division multiplexing module are connected with two shunt ports of a second optical switch set of the D 1*2 optical switch respectively. A combining port of the first optical switch set of the D 1*2 optical switch is connected with an external first drop-and-insert port, and a combining port of the second optical switch set of the D 1*2 optical switch is connected with an external second drop-and-insert port. The novel bidirectional optical add-drop multiplexer can effectively lower insertion loss and improve system reliability.
Description
Technical field
The present invention relates to optical communication technique field, be specifically related to a kind of novel bi-directional light point add/drop multiplexer.
Background technology
Light point add/drop multiplexer (OADM) is all had place to show one's prowess in long distance line and metropolitan area network.In main line application, light point add/drop multiplexer is the preferred unit that has the intermediate node of upper and lower business.The information that optical add/drop multiplexer allows the different wave length signal of different optical-fiber networks only need to download at node in different place add drop multiplex is sent into treatment facility (comprising ATM switch, SDH switch and ip router), and do not need the information of this node processing directly by optical channel, from this node, to be passed through, thereby greatly improve the efficiency of node processing information, having overcome electric treatment node must wrap the shortcoming of processing to the IP of all arrival.
Traditional bi-directional light is divided add/drop multiplexer, and as shown in Figure 1, its elementary cell comprises 3 WDM(dense wave division multiplexers) module and 11 × 2 optical switch.The inside of the one WDM module and the 2nd WDM module includes 3 WDM devices, and the output of 2 WDM devices is and is connected on 2 inputs of the 3rd WDM device, and 2 WDM devices are λ
iand λ
jseparate wavelength-division, then through the 3rd WDM device, these two wavelength are combined and transfer to 1 × 2 optical switch.By 1 × 2 optical switch, select the λ of output A input or B input
iand λ
jlight signal.The 3rd WDM module comprises 2 WDM devices, and the input of 2 WDM devices is on 2 outputs that are connected in 1 × 2 optical switch in parallel, and its effect is the λ of 1 × 2 optical switch output
iand λ
jlight signal is divided into two-way transmission.But because traditional bi-directional light point add/drop multiplexer has been used 8 WDM devices simultaneously, therefore its insertion loss is large, system reliability is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of novel bi-directional light point add/drop multiplexer, and it can effectively reduce the insertion loss of OADM, improves the reliability of system.
For addressing the above problem, the present invention is achieved by the following technical solutions:
A kind of novel bi-directional light is divided add/drop multiplexer, and it is mainly comprised of 2 dense wave division multipurpose modules and 1 D1 × 2 optical switch.The common port of the first dense wave division multipurpose module is connected with outside the first multiplexing port, the reflection end of the first dense wave division multipurpose module is connected with the reflection end of the second dense wave division multipurpose module, and the common port of the second dense wave division multipurpose module is connected with outside the second multiplexing port.The first selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of first group of optical switch of D1 × 2 optical switch with the first selecting side branch of the second dense wave division multipurpose module, the second selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of second group of optical switch of D1 × 2 optical switch with the second selecting side branch of the second dense wave division multipurpose module.The slotting port that divides of terminal and outside first that closes of first group of optical switch of D1 × 2 optical switch is connected, and the slotting port that divides of terminal and outside second that closes of second group of optical switch of D1 × 2 optical switch is connected.
The present invention only adopted 4 dense wave division multiplexers and 1 D1 × 2 optical switch realize bi-directional light divide insert point multiplexing; Compared with dividing add/drop multiplexer with traditional bi-directional light, save 4 dense wave division multiplexers, thereby effectively reduced the insertion loss of bi-directional light point add/drop multiplexer, effectively improved the reliability of system.; In addition, utilized D1 × 2 optical switch to realize two-way choice Add/drop wavelength function, there is the higher ratio of performance to price, had broad application prospects.
Accompanying drawing explanation
Fig. 1 is the principle schematic of traditional bi-directional light point add/drop multiplexer.
Fig. 2 is the principle schematic of bi-directional light of the present invention point add/drop multiplexer.
Embodiment
A kind of novel bi-directional light is divided add/drop multiplexer, and as shown in Figure 2, it is mainly comprised of 2 dense wave division multipurpose modules and 1 D1 × 2 optical switch.The common port of the first dense wave division multipurpose module is connected with outside the first multiplexing port, the reflection end of the first dense wave division multipurpose module is connected with the reflection end of the second dense wave division multipurpose module, and the common port of the second dense wave division multipurpose module is connected with outside the second multiplexing port.The first selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of first group of optical switch of D1 × 2 optical switch with the first selecting side branch of the second dense wave division multipurpose module, the second selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of second group of optical switch of D1 × 2 optical switch with the second selecting side branch of the second dense wave division multipurpose module.The slotting port that divides of terminal and outside first that closes of first group of optical switch of D1 × 2 optical switch is connected, and the slotting port that divides of terminal and outside second that closes of second group of optical switch of D1 × 2 optical switch is connected.
Claims (1)
1. novel bi-directional light is divided an add/drop multiplexer, and its bi-directional light divides add/drop multiplexer body mainly 2 dense wave division multipurpose modules and 1 D1 × 2 optical switch, to consist of;
The common port of the first dense wave division multipurpose module is connected with outside the first multiplexing port, the reflection end of the first dense wave division multipurpose module is connected with the reflection end of the second dense wave division multipurpose module, and the common port of the second dense wave division multipurpose module is connected with outside the second multiplexing port;
The first selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of first group of optical switch of D1 × 2 optical switch with the first selecting side branch of the second dense wave division multipurpose module, the second selecting side of the first dense wave division multipurpose module is connected 2 points of terminals of second group of optical switch of D1 × 2 optical switch with the second selecting side branch of the second dense wave division multipurpose module;
The slotting port that divides of terminal and outside first that closes of first group of optical switch of D1 × 2 optical switch is connected, and the slotting port that divides of terminal and outside second that closes of second group of optical switch of D1 × 2 optical switch is connected.
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| CN201410002968.8A CN103731227B (en) | 2014-01-03 | 2014-01-03 | A kind of Novel bidirectional optical add-drop multiplexer |
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| CN201410002968.8A CN103731227B (en) | 2014-01-03 | 2014-01-03 | A kind of Novel bidirectional optical add-drop multiplexer |
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| CN103731227B CN103731227B (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108024162A (en) * | 2017-11-21 | 2018-05-11 | 浙江大学 | A kind of light for realizing distributed optical fiber sensing network exchanges routing infrastructure and its method |
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2014
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| CN1516382A (en) * | 2003-01-03 | 2004-07-28 | ���ǵ�����ʽ���� | Bidirectional wavelength division multiplexing self recovering ring network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108024162A (en) * | 2017-11-21 | 2018-05-11 | 浙江大学 | A kind of light for realizing distributed optical fiber sensing network exchanges routing infrastructure and its method |
| CN108024162B (en) * | 2017-11-21 | 2020-07-17 | 浙江大学 | Optical switching routing structure and method for realizing fully distributed optical fiber sensing network |
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| CN103731227B (en) | 2016-06-29 |
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