CN103986670A - Method for obtaining performance of optical switch chip - Google Patents
Method for obtaining performance of optical switch chip Download PDFInfo
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- CN103986670A CN103986670A CN201410168179.1A CN201410168179A CN103986670A CN 103986670 A CN103986670 A CN 103986670A CN 201410168179 A CN201410168179 A CN 201410168179A CN 103986670 A CN103986670 A CN 103986670A
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- China
- Prior art keywords
- exchange chip
- optical switch
- light exchange
- light
- performance
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- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a method for obtaining the performance of an optical switch chip. The method for obtaining the performance of the optical switch chip comprises the steps that the configuration states of an optical switch in optical switch chip composed in different route modes are determined through all route modes determined according to an optical switch connection request of a user, and the performance of the optical switch chip is obtained by alternating route by line or by row when the optical switch is in different configuration state. The method for obtaining the performance of the optical switch chip is suitable for optical switch chips with any topological structures and has the advantages of being simple, expandable, low in efficiency and easy to implement.
Description
Technical field
The invention belongs to optical communication technique field, more specifically say, relate to a kind of acquisition methods of smooth exchange chip performance.
Background technology
Networks of Fiber Communications has become that telecommunications network, machine are calculated machine net, cable television network and even the important support of the Internet of Things that receives much attention at present, and its technological achievement has been penetrated into numerous areas, constantly affects people's life style.The development of Networks of Fiber Communications be unable to do without light transmission and light exchange (processing) two large core technologies.Yet " light-electrical-optical " exchange/processing mode generally adopting is at present difficult to match with high speed fibre transmission, becomes the bottleneck that restriction optical fiber information network further develops.Photon information treatment technology is considered to solve the effective means of this " electronic bottleneck ", becomes the research frontier within the scope of the world today.
The communication network of a new generation is gradually to full optical switching network evolution, and optical exchange structure, as the core technology of full optical switching network, has determined light exchange capacity, function and the performance of network.Adopt photon integrated technology to realize the study hotspot that extensive light exchange chip has become optical information processing field, optical switch construction is the elementary cell that forms light exchange chip, and what the port number of report was maximum at present is 8 * 8 smooth exchange chips based on silicon slider-Mach-Zehnder interferometer (SOI-MZI).Current, adopting in the world CMOS standard process techniques, design, preparation can be expanded light exchange chip on a large scale based on SOI-MRR optical switch element, can realize any exchange of 16 * 16 ports.Wherein, light exchange chip performance and light exchange chip topological structure, exchange chip technological design and exchange chip drive circuit etc. are closely related, and the development and application of Networks of Fiber Communications has also been played to vital effect.Design, preparation, modularized encapsulation and the test of a complete photon exchange integrated chip need long time, and need to expend a large amount of human and material resources and financial resources, adopt the method for calculating or emulation light exchange chip performance, can greatly shorten the design cycle of photon integrated chip.
The acquisition methods of existing smooth exchange chip performance is according to concrete optical switch topological structure, according to the path of signal transmission, adopt the method for transmission matrix, calculate one by one, therefore the method is not general, poor expandability, and its calculating scale increases the expansion along with switch scale very fastly, when switch scale becomes very large, it is very complicated that its computational process will become, optical communication technique in the face of rapid growth, the topological structure of optical switch and scale will be constantly among changes, adopt traditional acquisition methods to the performance of light exchange chip, not test well.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of acquisition methods of smooth exchange chip performance is provided, by ranks alternating path by mode calculate the multicast luminous power that each input port is corresponding, thereby get the light exchange chip performance under given optical switch configuration status, have can expand, feature that efficiency is low and simple.
For achieving the above object, the acquisition methods of a kind of smooth exchange chip performance of the present invention, is characterized in that, comprises the following steps:
(1), determine the configuration mode of optical switch;
According to user's the determined all routing modes of light exchange connection request, determine the configuration status that forms optical switch in light exchange chip under different routing modes;
(2), build the topology information table of light exchange chip;
According to the optical switch configuration status under the first routing mode, obtain the light field transmission matrix information of each component units of light exchange chip, in conjunction with the link information of each component units in light exchange chip, build again the topology information table of light exchange chip, wherein light exchange chip component units comprises optical switch element, crossing waveguide, and realize the direct-connected waveguide being connected between optical switch element and crossing waveguide;
(3), calculate the multicast luminous power that each input port is corresponding;
According to the topology information table of light exchange chip, calculate power output corresponding to each input port in bright dipping exchange chip, be the multicast luminous power that each input port is corresponding;
(4), obtain the performance of light exchange chip;
The multicast luminous power information corresponding according to each input port, calculates the insertion loss between each input port and corresponding output port and crosstalks, thereby getting the light exchange chip performance under this configuration status;
After light exchange chip performance under the first routing mode has been obtained, continue to obtain the light exchange chip performance of lower a kind of routing mode, and carry out successively the same treatment of the first routing mode, a routing mode to the last, thus get the light exchange chip performance under various routing modes.
The performance of wherein said smooth exchange chip comprises: the insertion loss between each input/output port and output Optical Signal To Noise Ratio (OSNR), and crosstalk etc., wherein, OSNR comprises with input frequently and alien frequencies input.
Further, described insertion loss and the acquisition methods of crosstalking are: by common transmission matrix account form be converted into ranks alternating path by account form, thereby calculate in bright dipping exchange chip the insertion loss between input port and corresponding output port and crosstalk.
Goal of the invention of the present invention is achieved in that
The acquisition methods of light exchange chip performance of the present invention, by user's the determined all routing modes of light exchange connection request, determine the configuration status that forms optical switch in light exchange chip under different routing modes, then according to ranks alternating path by mode get the performance of the light exchange chip under different optical switch configuration statuses.Such method is applicable to randomly topologically structured light exchange chip, and acquisition methods is simple, have advantages of simultaneously can expand, efficiency is low and simple.
Meanwhile, the acquisition methods of light exchange chip performance of the present invention also has following beneficial effect:
(1), traditional transmission matrix account form is changed in the present invention ranks alternating path by mode, be so not only common to various network topologies, also have can expand, performance that efficiency is low and simple;
(2), the present invention calculates for the performance of light exchange chip, the optics or the electrology characteristic design that can be light exchange chip provide a kind of evaluation measures.
Accompanying drawing explanation
Fig. 1 is the flow chart of the acquisition methods of light exchange chip performance of the present invention;
Fig. 2 is a kind of topology diagram of clog-free formula 4X4 light exchange chip;
Fig. 3 is the topology information figure of light exchange chip;
Fig. 4 is the structure chart that the Mach of optical switch module shown in Fig. 2 increases Dare interferometer form.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described, so that those skilled in the art understands the present invention better.Requiring particular attention is that, in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these are described in here and will be left in the basket.
Embodiment
Fig. 1 is the flow chart of the acquisition methods of light exchange chip performance of the present invention.
Fig. 2 is a kind of topology diagram of clog-free formula 4X4 light exchange chip.
Fig. 3 is the topology information figure of light exchange chip.
A kind of method of calculating light exchange chip performance of the present invention, as shown in Figure 1, comprises the following steps:
(1), determine the configuration mode of optical switch;
According to user's the determined all routing modes of light exchange connection request, determine the configuration status that forms optical switch in light exchange chip under different routing modes;
In the present embodiment, as shown in Figure 2, provided a kind of topological structure of clog-free formula 4X4 light exchange chip, comprise signal transmitting unit, light exchange chip unit and signal receiving unit, wherein, light exchange chip unit comprises 62 * 2 optical switch modules, two crossing waveguide modules, and some direct-connected waveguides;
If the light that user sends exchange connection request is: realize transmitting terminal 1 to receiving terminal 1, transmitting terminal 2 is to receiving terminal 2, and transmitting terminal 3 is to receiving terminal 3, and transmitting terminal 4 is to the exchange of receiving terminal 4., according to routing algorithm, possible routing mode has 4 kinds, has 4 kinds of different optical switch configuration statuses all to meet above-mentioned light exchange connection request, they respectively:
Route 1:6 2 * 2 optical switch modules are all in blocking state;
Route 2:2 * 2 optical switch module 1 and 5 is in crossing condition, and all the other optical switch modules are all in blocking state;
Route 3:2 * 2 optical switch module 2 and 6 is in crossing condition, and all the other optical switch modules are all in blocking state;
Route 4:2 * 2 optical switch module 3 and 4 is in blocking state, and all the other optical switch modules are all in crossing condition;
(2), build the topology information table of light exchange chip;
According to the optical switch configuration status under the first routing mode, obtain the light field transmission matrix information of each component units of light exchange chip, in conjunction with the link information of each component units in light exchange chip, build again the topology information table of light exchange chip, wherein light exchange chip component units comprises optical switch element, crossing waveguide, and realize the direct-connected waveguide being connected between optical switch element and crossing waveguide;
In the present embodiment, take route 4 as example, determine the configuration status of optical switch under route 4 modes: 2 * 2 optical switch modules 1,2,5 and 6 are in crossing condition, and 2 * 2 optical switch modules 3 and 4 are in blocking state;
The state of optical switch module determines that the information of its transmission matrix is also determined afterwards, the transmission matrix information of direct-connected waveguide and crossing waveguide does not change with the change of routing mode, therefore, the topology information of comprehensive light exchange chip and wherein the transmission matrix information of each component units, the topology information table of the light exchange chip in route 4 situations that build as shown in Figure 3, (1) go (1) row corresponding be the transmission matrix of 2 * 2 optical switch modules 1, (2) go (2) row corresponding be the transmission matrix of 2 * 2 optical switch modules 2, (3) go (3) row corresponding be the transmission matrix of crossing waveguide module 1, (4) go (4) row corresponding be the transmission matrix of 2 * 2 optical switch modules 3, (5) go (5) row corresponding be the transmission matrix of 2 * 2 optical switch modules 4, (6) go (6) row corresponding be the transmission matrix of crossing waveguide module 2, (7) go (7) row corresponding be the transmission matrix of 2 * 2 optical switch modules 5, (8) go (8) row corresponding be the transmission matrix of 2 * 2 optical switch modules 6, (3) go (1) row in a13 corresponding be the direct-connected waveguide between 2 output ports of 2 * 2 optical switch modules 1 and 1 input port of crossing waveguide module 1, other a
ij(1≤i≤8,1≤j≤8) are similar, same the in the situation that of routing mode 1,2 and 3, also can obtain according to identical method the topology information table of light exchange chip,
(3), calculate the multicast luminous power that each input port is corresponding;
According to the topology information table of light exchange chip, calculate power output corresponding to each input port in bright dipping exchange chip, be the multicast luminous power that each input port is corresponding;
In the present embodiment, take input port 1 as example, calculate multicast luminous power corresponding under routing mode 4 modes.In table 1, ranks replace the multicast transmission path that connecting line segment is input port 1.As can be seen from Figure 3, the input optical signal of 1 port from 4 port outputs, is similar to the multicast transmission form that is singly input to many outputs the most at last, from the light signal of output port 1 output, is only wherein that we are desirable, and other are crosstalks.The Output optical power of 4 output ports can according to ranks alternating path by mode calculate.The phantom line segments of take in Fig. 3 is example, according to ranks alternating path by method calculate the light signal of output port, if the input optical signal of input port 1 is E
in1, the light signal E exporting from (1) row (1) column unit
11=M
11e
in1, the light signal E exporting from (4) row (1) column unit
41=a
14e
11, the light signal E exporting from (4) row (4) column unit
44=M
41e
41, the light signal E exporting from (7) row (4) column unit
74=a
47e
44, the light signal E exporting from (7) row (7) column unit
77=M
71e
74, E
77be the light signal of one of them output port; According to identical method, the light signal of other output ports also can obtain.After obtaining the multicast luminous power of input port 1, can calculate according to identical method the multicast luminous power of input port 2,3 and 4.Equally, the in the situation that of routing mode 1,2 and 3, also can calculate according to identical method the multicast luminous power of each input port.
(4), obtain the performance of light exchange chip;
The multicast luminous power information corresponding according to each input port, calculates the insertion loss between each input port and corresponding output port and crosstalks, thereby getting the light exchange chip performance under this configuration status;
After light exchange chip performance under the first routing mode has been calculated, continue to calculate the light exchange chip performance of lower a kind of routing mode, and carry out successively the same treatment of the first routing mode, a routing mode to the last, thus get the light exchange chip performance under various routing modes.
Like this, under route 4 configuration statuses, the performance parameter of light exchange chip has just been obtained, and adopts and uses the same method, and gets the light exchange chip performance under route 1～3 mode.
Fig. 4 is the structure chart that the Mach of optical switch module shown in Fig. 2 increases Dare interferometer form.
In the present embodiment, as shown in Figure 4, A
0and A
1for input optical signal, A
2, A
3, A
4and A
5for the light signal in the optical switch module exchange process of Mach increasing Dare interferometer form, A
6and A
7for output optical signal.During making alive, 2 * 2 optical switches, in blocking state, are realized A
0to A
6, A
1to A
7exchange; During making alive, 2 * 2 optical switches, in crossing condition, are not realized A
0to A
7, A
1to A
6exchange.Therefore by the voltage of one arm above the optical switch module of change Mach increasing Dare interferometer form, can realize the selectivity output of two input optical signals.
Although above the illustrative embodiment of the present invention is described; so that those skilled in the art understand the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and definite the spirit and scope of the present invention in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (3)
1. an acquisition methods for light exchange chip performance, is characterized in that, comprises the following steps:
(1), determine the configuration mode of optical switch;
According to user's the determined all routing modes of light exchange connection request, determine the configuration status that forms optical switch in light exchange chip under different routing modes;
(2), build the topology information table of light exchange chip;
According to the optical switch configuration status under the first routing mode, obtain the light field transmission matrix information of each component units of light exchange chip, in conjunction with the link information of each component units in light exchange chip, build again the topology information table of light exchange chip, wherein light exchange chip component units comprises optical switch element, crossing waveguide, and realize the direct-connected waveguide being connected between optical switch element and crossing waveguide;
(3), calculate the multicast luminous power that each input port is corresponding;
According to the topology table of light exchange chip, calculate power output corresponding to each input port in bright dipping exchange chip, be the multicast luminous power that each input port is corresponding;
(4), obtain the performance of light exchange chip;
The multicast luminous power information corresponding according to each input port, calculates the insertion loss between each input port and corresponding output port and crosstalks, thereby getting the light exchange chip performance under this configuration status;
After light exchange chip performance under the first routing mode has been obtained, continue to obtain the light exchange chip performance of lower a kind of routing mode, and carry out successively the same treatment of the first routing mode, a routing mode to the last, thus get the light exchange chip performance under various routing modes.
2. the acquisition methods of smooth exchange chip performance according to claim 1, it is characterized in that, the performance of described light exchange chip comprises: the insertion loss between each input/output port and output Optical Signal To Noise Ratio (OSNR), and crosstalk etc., wherein, OSNR comprises with input frequently and alien frequencies input.
3. the acquisition methods of smooth exchange chip performance according to claim 1 and 2, it is characterized in that, comprise: the insertion loss between described input port and corresponding output port and the acquisition methods of crosstalking are: by common transmission matrix account form be converted into ranks alternating path by account form, thereby calculate in bright dipping exchange chip the insertion loss between input port and corresponding output port and crosstalk.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168179.1A CN103986670B (en) | 2014-04-24 | 2014-04-24 | A kind of acquisition methods of smooth exchange chip performance |
| PCT/CN2014/077637 WO2015161534A1 (en) | 2014-04-24 | 2014-05-16 | Method for acquiring performance of optical switch chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410168179.1A CN103986670B (en) | 2014-04-24 | 2014-04-24 | A kind of acquisition methods of smooth exchange chip performance |
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| CN103986670A true CN103986670A (en) | 2014-08-13 |
| CN103986670B CN103986670B (en) | 2017-11-21 |
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| WO (1) | WO2015161534A1 (en) |
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| CN105049114A (en) * | 2015-07-27 | 2015-11-11 | 电子科技大学 | Method for testing performance of optical switching chip module |
| CN107888996A (en) * | 2017-10-19 | 2018-04-06 | 中国科学院半导体研究所 | The method of adjustment and device of piece glazing network topology structure |
| CN111931376A (en) * | 2020-08-13 | 2020-11-13 | 电子科技大学 | Simulation system for evaluating performance of large-scale optical switching integrated chip |
| CN116029091A (en) * | 2022-11-21 | 2023-04-28 | 之江实验室 | Chip simulation method and device based on coherent transmission matrix method and computer equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049114A (en) * | 2015-07-27 | 2015-11-11 | 电子科技大学 | Method for testing performance of optical switching chip module |
| WO2017016053A1 (en) * | 2015-07-27 | 2017-02-02 | 电子科技大学 | Performance test method for optical switch chip |
| CN105049114B (en) * | 2015-07-27 | 2017-10-17 | 电子科技大学 | A kind of method of test light exchange chip module performance |
| CN107888996A (en) * | 2017-10-19 | 2018-04-06 | 中国科学院半导体研究所 | The method of adjustment and device of piece glazing network topology structure |
| CN107888996B (en) * | 2017-10-19 | 2020-09-11 | 中国科学院半导体研究所 | Method and device for adjusting topological structure of optical network on chip |
| CN111931376A (en) * | 2020-08-13 | 2020-11-13 | 电子科技大学 | Simulation system for evaluating performance of large-scale optical switching integrated chip |
| CN111931376B (en) * | 2020-08-13 | 2022-07-26 | 电子科技大学 | Simulation system for evaluating performance of large-scale optical switching integrated chip |
| CN116029091A (en) * | 2022-11-21 | 2023-04-28 | 之江实验室 | Chip simulation method and device based on coherent transmission matrix method and computer equipment |
| CN116029091B (en) * | 2022-11-21 | 2024-02-23 | 之江实验室 | Chip simulation method and device based on coherent transmission matrix method and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015161534A1 (en) | 2015-10-29 |
| CN103986670B (en) | 2017-11-21 |
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