CN105676352B - A kind of three port modes are spaced apart device - Google Patents
A kind of three port modes are spaced apart device Download PDFInfo
- Publication number
- CN105676352B CN105676352B CN201610025619.7A CN201610025619A CN105676352B CN 105676352 B CN105676352 B CN 105676352B CN 201610025619 A CN201610025619 A CN 201610025619A CN 105676352 B CN105676352 B CN 105676352B
- Authority
- CN
- China
- Prior art keywords
- waveguide
- branch
- denoted
- width
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/125—Bends, branchings or intersections
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
Abstract
The invention discloses three port modes of one kind to be spaced apart device, including trunk waveguide, the first branch-waveguide, the second branch-waveguide and third branch-waveguide；The tail end of trunk waveguide is connected with the beginning of the beginning of the first branch-waveguide, the second branch-waveguide with the beginning of third branch-waveguide respectively, the width of trunk waveguide is denoted as W by the equal length of the length of the first branch-waveguide, the length of the second branch-waveguide and third branch-waveguide0, the width of the first branch-waveguide is denoted as W1, the width of the second branch-waveguide is denoted as W2, the width of third branch-waveguide is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+W3, the mode propagation constant of the first branch-waveguide, the second branch-waveguide and third branch-waveguide meets the following conditions：β3,k+1＜ β1,k＜ β2,k＜ β3,k；Advantage is using less unit cascaded to increase port and promote communication link capacity and for greater flexibility control process optical mode.
Description
Technical field
It is spaced apart device the present invention relates to one mode, is spaced apart device more particularly, to three port modes of one kind.
Background technology
With the swift and violent growth of information content, people are higher and higher to processor processes information Capability Requirement, existing processing
Device mostly uses parallel coenocytism.And how to be promoted between multi-core processor and core processor and external memory it
Between communication link capacity become crucial problem.
Silicon-based optical interconnection technology provides a kind of effective mode to solve this problem.Wavelength-division multiplex technique, polarization point
Multiplexing technology and Multi-level modulation fomats are the traditional approach for promoting link capacity.However, using these technologies expanding link
Capacity has moved closer to theoretical boundary.Therefore, it is necessary to which Development of Novel transmission technology is to meet the bandwidth need of explosive growth
It asks.
Mode multiplexing technology, using pattern as new degree of freedom, i.e., each pattern is logical as an independent data
Road.Mode multiplexing/demultiplexer is one of essential elements in mode multiplexing communication link.Before this, has a large amount of research work
It concentrates on and realizes silicon substrate mode multiplexing/demultiplexer based on asymmetrical Y bifurcated, multimode interference and coupler.With wavelength-division
Wavelength interval separator in multiplexed communications link is similar, and mode spacing separator is also should in mode multiplexing communication link
Another to be considered significant element.
In view of this, it designs a kind of three port modes device that is spaced apart and is applied to mode multiplexing communication link, for using less
It is unit cascaded to increase port and promote communication link capacity and control process optical mode is of great significance for greater flexibility.
Invention content
Technical problem to be solved by the invention is to provide three port modes of one kind to be spaced apart device, between three port mode
It can be utilized every separator less unit cascaded to increase port and promote communication link capacity and for greater flexibility control process
Optical mode.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of three port modes are spaced apart device, packet
Include trunk waveguide, the first branch-waveguide, the second branch-waveguide and third branch-waveguide；The tail end of the trunk waveguide respectively and
The beginning at the beginning of first branch-waveguide, the beginning of second branch-waveguide and the third branch-waveguide connects
It connects, the length of first branch-waveguide, the length of the length and the third branch-waveguide of second branch-waveguide
It spends equal, the width of the trunk waveguide is denoted as W0, the width of first branch-waveguide is denoted as W1, described second
The width of branch-waveguide is denoted as W2, the width of the third branch-waveguide is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+W3, described
The first branch-waveguide, second branch-waveguide and the third branch-waveguide mode propagation constant meet following item
Part：β3,k+1＜ β1,k＜ β2,k＜ β3,k, wherein β1,kFor the mode propagation constant of kth rank pattern in first branch-waveguide,
β2,kFor the mode propagation constant of kth rank pattern in second branch-waveguide, β3,kFor kth in the third branch-waveguide
The mode propagation constant of rank pattern, β3,k+1For the mode propagation constant of+1 rank pattern of kth in the third branch-waveguide, k takes
Natural number.
Spacing between the tail end of first branch-waveguide and the tail end of the third branch-waveguide is Wg1, described
The second branch-waveguide tail end and the tail end of the third branch-waveguide between spacing be Wg2, the trunk waveguide
Length is L0, the length of first branch-waveguide is L, W1=0.7 μm, W2=0.75 μm, W3=0.85 μm, L0=100 μm,
L=770 μm, Wg1=1.7 μm, Wg2=1.5 μm.
Compared with the prior art, the advantages of the present invention are as follows pass through trunk waveguide, the first branch-waveguide, the second branch-waveguide
It is spaced apart device with third branch-waveguide to construct three port modes, the tail end of trunk waveguide beginning with the first branch-waveguide respectively
It holds, the beginning of the second branch-waveguide is connected with the beginning of third branch-waveguide, the length of the first branch-waveguide, the second branch-waveguide
Length and third branch-waveguide equal length, the width of trunk waveguide is denoted as W0, the width of the first branch-waveguide is denoted as
W1, the width of the second branch-waveguide is denoted as W2, the width of third branch-waveguide is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+W3, the
The mode propagation constant of one branch-waveguide, the second branch-waveguide and third branch-waveguide meets the following conditions：β3,k+1＜ β1,k＜
β2,k＜ β3,k, wherein β1,kFor the mode propagation constant of kth rank pattern in first branch-waveguide, β2,kIt is described
The mode propagation constant of kth rank pattern, β in two branch-waveguides3,kFor the pattern of kth rank pattern in the third branch-waveguide
Propagation constant, β3,k+1For the mode propagation constant of+1 rank pattern of kth in the third branch-waveguide, k takes natural number；Work as kth
Rank pattern is inputted from the first branch-waveguide, the second branch-waveguide and third branch-waveguide respectively, through branch-waveguide and trunk waveguide
When junction, can (3k+2) rank pattern, (3k+1) rank pattern and (3k) rank pattern in trunk waveguide staggeredly be encouraged, instead
It is as the same, thus using less unit cascaded to increase port and promote communication link capacity and for greater flexibility at control
Ricoh's pattern；
When the spacing between the tail end and the tail end of third branch-waveguide of the first branch-waveguide is Wg1, the second branch-waveguide
Spacing between tail end and the tail end of third branch-waveguide is Wg2, the length of trunk waveguide is L0, the length of the first branch-waveguide
For L, W1=0.7 μm, W2=0.75 μm, W3=0.85 μm, L0=100 μm, L=770 μm, Wg1=1.7 μm, Wg2At=1.5 μm,
The crosstalk difference of basic mode in trunk waveguide, First-Order Mode, second order mode, three rank moulds, quadravalence mould and five rank moulds at a wavelength of 1550 run
For -26.4dB, -25.4dB, -24.8dB, -21.3dB, -19.6dB and -20.1dB, the three port modes device performance that is spaced apart reaches
To optimal.
Description of the drawings
Fig. 1 is that three port modes of the present invention are spaced apart the structure chart of device；
Fig. 2 is that three port modes of the present invention are spaced apart device under the conditions of operation wavelength is 1550nm, the first six pattern
Transmission figure；
Fig. 3 is that three port modes of the present invention are spaced apart device length scanning spectrogram.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
Embodiment one：Device, including trunk waveguide 1, first branch's wave as shown in Figure 1, a kind of three port modes are spaced apart
Lead the 2, second branch-waveguide 3 and third branch-waveguide 4；The tail end of trunk waveguide 1 respectively with the beginning of the first branch-waveguide 2,
The beginning of two branch-waveguides 3 is connected with the beginning of third branch-waveguide 4, the length of the first branch-waveguide 2, the second branch-waveguide 3
Length and third branch-waveguide 4 equal length, the width of trunk waveguide 1 is denoted as W0, the width note of the first branch-waveguide 2
For W1, the width of the second branch-waveguide 3 is denoted as W2, the width of third branch-waveguide 4 is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+
W3, the mode propagation constant of the first branch-waveguide 2, the second branch-waveguide 3 and third branch-waveguide 4 meets the following conditions：β3,k+1
＜ β1,k＜ β2,k＜ β3,k, wherein β1,kFor the mode propagation constant of kth rank pattern in the first branch-waveguide 2, β2,kIt is second point
The mode propagation constant of kth rank pattern, β in branch waveguide 33,kThe mode propagation constant of kth rank pattern in third branch-waveguide 4,
β3,k+1For the mode propagation constant of+1 rank pattern of kth in third branch-waveguide 4, k takes natural number.
Embodiment two：Device, including trunk waveguide 1, first branch's wave as shown in Figure 1, a kind of three port modes are spaced apart
Lead the 2, second branch-waveguide 3 and third branch-waveguide 4；The tail end of trunk waveguide 1 respectively with the beginning of the first branch-waveguide 2,
The beginning of two branch-waveguides 3 is connected with the beginning of third branch-waveguide 4, the length of the first branch-waveguide 2, the second branch-waveguide 3
Length and third branch-waveguide 4 equal length, the width of trunk waveguide 1 is denoted as W0, the width note of the first branch-waveguide 2
For W1, the width of the second branch-waveguide 3 is denoted as W2, the width of third branch-waveguide 4 is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+
W3, the mode propagation constant of the first branch-waveguide 2, the second branch-waveguide 3 and third branch-waveguide 4 meets the following conditions：β3,k+1
＜ β1,k＜ β2,k＜ β3,k, wherein β1,kFor the mode propagation constant of kth rank pattern in the first branch-waveguide 2, β2,kIt is second point
The mode propagation constant of kth rank pattern, β in branch waveguide 33,kThe mode propagation constant of kth rank pattern in third branch-waveguide 4,
β3,k+1For the mode propagation constant of+1 rank pattern of kth in third branch-waveguide 4, k=0,1,2.
In the present embodiment, the spacing between the tail end and the tail end of third branch-waveguide 4 of the first branch-waveguide 2 is Wg1, the
Spacing between the tail end and the tail end of third branch-waveguide 4 of two branch-waveguides 3 is Wg2, the length of trunk waveguide 1 is L0, first
The length of branch-waveguide 2 is L, W1=0.7 μm, W2=0.75 μm, W3=0.85 μm, L0=100 μm, L=770 μm, Wg1=1.7 μ
M, Wg2=1.5 μm.
Three port modes of the present invention are spaced apart device under the conditions of operation wavelength is 1550nm, the transmission of the first six pattern
Figure is as shown in Figure 2.Analysis chart 2 (a) -2 (f) is it is found that when input light is basic mode and three rank moulds, these patterns translate into third point
The basic mode and First-Order Mode of branch waveguide 4, if input light is First-Order Mode and quadravalence mould, these patterns translate into the second branch-waveguide
3 basic mode and First-Order Mode, if input light is second order mode and five rank moulds, these patterns translate into the base of the first branch-waveguide 2
Mould and First-Order Mode, the identical desired design result of device working characteristics perfection it can thus be appreciated that three port modes of the present invention are spaced apart.
The three port modes device length scanning spectrogram that is spaced apart of the present invention is as shown in Figure 3.In Fig. 3, solid line, dotted line and
Dotted line indicates that input light is transferred to the first branch-waveguide 2, the second branch-waveguide 3 and third branch-waveguide 4 from trunk waveguide 1 respectively
The case where；The Output optical power of first branch-waveguide, the basic mode of the second branch-waveguide and third branch-waveguide and First-Order Mode is distinguished
It is indicated with rectangle and circle.From Fig. 3 (a) -3 (f) it can be seen that wave band be 1480nm to 1660nm when, pattern crosstalk be less than -
17dB。
Claims (2)
- The device 1. a kind of three port modes are spaced apart, it is characterised in that including trunk waveguide, the first branch-waveguide, second branch's wave It leads and third branch-waveguide；The tail end of the trunk waveguide respectively with the beginning of first branch-waveguide, described The beginning of two branch-waveguides is connected with the beginning of the third branch-waveguide, the length of first branch-waveguide, described The second branch-waveguide length and the third branch-waveguide equal length, the width of the trunk waveguide is denoted as W0, the width of first branch-waveguide is denoted as W1, the width of second branch-waveguide is denoted as W2, the third point The width of branch waveguide is denoted as W3, W3＞ W2＞ W1, W0=W1+W2+W3, first branch-waveguide, second branch-waveguide Meet the following conditions with the mode propagation constant of the third branch-waveguide：β3,k+1＜ β1,k＜ β2,k＜ β3,k, wherein β1,kFor The mode propagation constant of kth rank pattern, β in first branch-waveguide2,kFor kth rank mould in second branch-waveguide The mode propagation constant of formula, β3,kFor the mode propagation constant of kth rank pattern in the third branch-waveguide, β3,k+1It is described Third branch-waveguide in+1 rank pattern of kth mode propagation constant, k takes natural number.
- The device 2. a kind of three port mode according to claim 1 is spaced apart, the tail end of first branch-waveguide and Spacing between the tail end of the third branch-waveguide is Wg1, the tail end of second branch-waveguide and the third are divided Spacing between the tail end of branch waveguide is Wg2, the length of the trunk waveguide is L0, the length of first branch-waveguide For L, W1=0.7 μm, W2=0.75 μm, W3=0.85 μm, L0=100 μm, L=770 μm, Wg1=1.7 μm, Wg2=1.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025619.7A CN105676352B (en) | 2016-01-15 | 2016-01-15 | A kind of three port modes are spaced apart device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025619.7A CN105676352B (en) | 2016-01-15 | 2016-01-15 | A kind of three port modes are spaced apart device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105676352A CN105676352A (en) | 2016-06-15 |
| CN105676352B true CN105676352B (en) | 2018-10-16 |
Family
ID=56301129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610025619.7A Active CN105676352B (en) | 2016-01-15 | 2016-01-15 | A kind of three port modes are spaced apart device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105676352B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490829B (en) * | 2017-08-17 | 2019-12-13 | 宁波大学 | Three-mode multiplexer/demultiplexer based on reverse tapered waveguide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177670Y (en) * | 2007-05-25 | 2009-01-07 | 江苏大学 | 3 branch light splitter of mode stimulating wave-guide construction |
| CN102308246A (en) * | 2009-03-31 | 2012-01-04 | 住友大阪水泥股份有限公司 | Optical modulator |
| CN103576238A (en) * | 2013-10-12 | 2014-02-12 | 宁波大学 | N-mode multiplexer/demultiplexer based on asymmetric Y-furcate structure |
| CN104199145A (en) * | 2014-08-04 | 2014-12-10 | 宁波大学 | Asymmetric Y branching type mode interval separator |
| CN104503022A (en) * | 2014-12-10 | 2015-04-08 | 宁波大学 | Full-optical encoder based on Y-branch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004227015A (en) * | 1995-02-03 | 2004-08-12 | Nhk Spring Co Ltd | Optical branching device |
-
2016
- 2016-01-15 CN CN201610025619.7A patent/CN105676352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177670Y (en) * | 2007-05-25 | 2009-01-07 | 江苏大学 | 3 branch light splitter of mode stimulating wave-guide construction |
| CN102308246A (en) * | 2009-03-31 | 2012-01-04 | 住友大阪水泥股份有限公司 | Optical modulator |
| CN103576238A (en) * | 2013-10-12 | 2014-02-12 | 宁波大学 | N-mode multiplexer/demultiplexer based on asymmetric Y-furcate structure |
| CN104199145A (en) * | 2014-08-04 | 2014-12-10 | 宁波大学 | Asymmetric Y branching type mode interval separator |
| CN104503022A (en) * | 2014-12-10 | 2015-04-08 | 宁波大学 | Full-optical encoder based on Y-branch |
Non-Patent Citations (2)
| Title |
|---|
| Three-mode multi/demultiplexing experiment using PLC mode multiplexer and its application to 2+1 mode bi-directional optical communication;Hirokazu Kubota et al.;《IEICE Electronics Express》;20130625;第10卷(第12期);全文 * |
| Y分支器单元的有限差分光束传输法分析;杨建义等;《光子学报》;19940831;第23卷(第4期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105676352A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8346087B2 (en) | Wavelength-division multiplexing for use in multi-chip systems | |
| CN105829930B (en) | Mode multiplexing demultiplexer and switching node | |
| CN104914506B (en) | InP-base mode division multiplexing/demultiplexer structure based on multi-mode interference coupler | |
| CN107490829B (en) | Three-mode multiplexer/demultiplexer based on reverse tapered waveguide | |
| CN104111494A (en) | Silicon nitride waveguide and microannulus-based mode-wavelength multiplexer manufacturing method | |
| JP5773521B2 (en) | Mode multiplexer / demultiplexer, optical transceiver, and optical communication system | |
| CN1202634C (en) | Array waveguide grating type optical signal multiplexer/multipath separator | |
| CN104918145A (en) | Monolithic integrated multi-wavelength polarization multiplexer/demultiplexer | |
| CN108519642B (en) | Integrated optical mode switch compatible with wavelength division multiplexing and mode division multiplexing functions | |
| CN105680953A (en) | Optical module starting method and device | |
| CN105676352B (en) | A kind of three port modes are spaced apart device | |
| JP2015026070A (en) | Mode multiplexer/demultiplexer and mode multiplex communication system | |
| CN103576238B (en) | A kind of mode multiplexing/demodulation multiplexer of the N based on asymmetrical Y bifurcation structure | |
| CN106788866A (en) | The harmonic method of optical module | |
| CN105339821B (en) | Optical router | |
| CN102841406B (en) | Optical staggered filtering device | |
| CN104199145B (en) | A kind of asymmetrical Y bifurcated mode spacing separator | |
| WO2018014328A1 (en) | Optical add/drop multiplexer, control method therefor, and transceiver | |
| CN111458804A (en) | Interposer chip structure and coupling assembly of optical fiber and photonic chip | |
| CN105093418B (en) | A kind of novel optical interconnected chips based on micro-nano fiber | |
| CN101252408B (en) | Multiplex optical parallel arithmetic and processing method based on close wavelength-division multiplex technology | |
| EP1123595A2 (en) | Wdm transmitter and receiver | |
| KR100248411B1 (en) | Wdm type buffer memory implementation method | |
| CN203645689U (en) | Novel bidirectional optical add-drop multiplexer (OADM) | |
| WO2021175305A1 (en) | Reconfigurable optical add-drop multiplexer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |