CN105511016A - Port number asymmetric array waveguide grating router and application thereof - Google Patents
Port number asymmetric array waveguide grating router and application thereof Download PDFInfo
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- CN105511016A CN105511016A CN201510939681.2A CN201510939681A CN105511016A CN 105511016 A CN105511016 A CN 105511016A CN 201510939681 A CN201510939681 A CN 201510939681A CN 105511016 A CN105511016 A CN 105511016A
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- waveguide grating
- arrayed
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- 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
- G02B6/12007—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer
- G02B6/12009—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
- G02B6/12016—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides characterised by the input or output waveguides, e.g. tapered waveguide ends, coupled together pairs of output waveguides
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention provides a port number asymmetric array waveguide grating router and an application thereof. The port number asymmetric array waveguide grating router refers that the number N of the input ports and the number M of the output ports of the array waveguide grating router are different, i.e. N is not equal to M. The port number asymmetric array waveguide grating router comprises a port number symmetric array waveguide grating router and an optical coupler. The port number symmetric array waveguide grating router refers that the number of the input ports and the number of the output ports of the array waveguide grating router are the same. The optical coupler is used for coupling multiple output ports to one output port. The wavelength adjusting range of the input ports is reduced on the basis of guaranteeing non-blocking performance of the conventional array waveguide grating router so that the structure is enabled to have higher applicability.
Description
Technical field
The present invention relates to a kind of optical device, particularly, relate to the asymmetric arrayed-waveguide grating routers of a kind of optical communication field port number and application thereof.
Background technology
In recent years, along with the fast development of the association area such as mobile Internet, cloud computing, network traffics present explosive growth trend, and this trend is had higher requirement for the capacity of current network infrastructure.Meanwhile, tidal effect feature and the interregional flow complementary characteristic of network traffics cause again the great wasting of resources, and optical communication equipment is as the main carriers of flow, just require that it can realize the flexible dispatching of resource, high flow volume region and high flow capacity time period more resource can be given with this.In this context, the pond concept of communications facility obtains great concern in the field such as broadband access network, wireless access network.Only serving this Local Area Network difference with the communications facility in each region of tradition is, the pond of communications facility requires that communications facility can centralized management, carries out the flexible dispatching of communications facility resource according to the difference of the demand for services of each network of regional.
In optical device, arrayed-waveguide grating routers plays very important effect due to its sourceless characteristic and routing algorithm in communications facility.The people such as HongyangYang proposed to utilize the laser instrument pond in pond and the method for arrayed-waveguide grating routers to realize the shared of laser instrument between multiple time-division Wave division multiplexing passive optical network on the JournalofOpticalCommunicationsandNetworking magazine of Optical Society of America (OSA) in 2014, in this approach, the quantity of laser instrument is the quantity more than output port, and the port number of traditional arrayed-waveguide grating routers mostly is symmetry, realizing the asymmetrical the most directly method of port number is removed by the output port of the arrayed-waveguide grating routers of port number symmetry, but this removing method does not consider the problem of the wavelength regulation scope of input port.Based on this, the present invention proposes the building method of the asymmetrical arrayed-waveguide grating routers of a kind of port number, utilize this patent institute extracting method, realize port number asymmetrical while, each input port only need regulate in less wavelength coverage.
The people such as TongYe, in JournalofLightwaveTechnology magazine VOL.30 in Optical Society of America (OSA) in 2012, propose the building method of asymmetric arrayed-waveguide grating routers in the article of NO.13.
Summary of the invention
For the technical matters existed in prior art, the object of this invention is to provide the asymmetrical arrayed-waveguide grating routers of a kind of port number and application thereof, utilize the output port of photo-coupler to the arrayed-waveguide grating routers of port number symmetry to be coupled, large-scale arrayed-waveguide grating routers can be constructed with small-sized arrayed-waveguide grating routers.
For achieving the above object, the technical solution adopted in the present invention is as follows:
The asymmetrical arrayed-waveguide grating routers of a kind of port number, the asymmetrical arrayed-waveguide grating routers of described port number refers to that the input port number N of arrayed-waveguide grating routers and output port number M are not identical, namely, N ≠ M, comprise arrayed-waveguide grating routers and the photo-coupler of port number symmetry, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers is identical with output port number, described photo-coupler is used for multiple output port to be coupled to an output port, or multiple input port is coupled to an input port.
Described N > M, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers and output port number are all N, the number of described photo-coupler is M, and the wavelength coverage of N number of input port is M times of wavelength interval.
Described N < M, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers and output port number are all M, the number of described photo-coupler to be the wavelength coverage of N, M output port the be N of wavelength interval doubly.
Described photo-coupler is used for multiple output ports of symmetric array waveguide grating router to be coupled as an output port.
Described photo-coupler is used for multiple input ports of symmetric array waveguide grating router to be coupled as an input port.
The application of the asymmetrical arrayed-waveguide grating routers of a kind of port number, in N > M situation, the laser instrument of N number of Wavelength tunable is positioned over respectively the input port of N*M arrayed-waveguide grating routers, form a laser instrument pond, M output port of arrayed-waveguide grating routers is connected to different networks respectively, for each tunable laser, by being adjusted to certain specific wavelength, export certain specific port, like this, when needed for certain region, bandwidth ratio is larger, more laser instrument can be outputted to the port corresponding to this region, thus realize the flexible dispatching of resource, when the bandwidth demand of whole network is lower, some laser instrument of suitable closedown, thus realize energy-conservation, improve the energy efficiency of whole network.
Compared with prior art, the present invention has following beneficial effect:
The present invention has taken into full account the non-blocking of structure and the wavelength regulation scope of input port laser instrument in construction process.Non-blocking is a large feature of arrayed-waveguide grating routers, therefore, in the design of structure, according to the routing characteristic of the arrayed-waveguide grating routers of port number symmetry, by rational coupling scheme, make each input port can choke free arrival output port within the scope of respective wavelength regulation.And it is not the present invention can not be limited to device cost, high to the wavelength regulation area requirement of laser instrument.The present invention possesses on the basis of traditional array waveguide grating router non-blocking in guarantee, reduces the wavelength regulation scope of input port, thus makes this structure have more application.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is fundamental block diagram of the present invention;
Fig. 2 is the structural map of one embodiment of the invention;
Fig. 3 is commercial Application embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
On directly perceived, the structure of the asymmetrical arrayed-waveguide grating routers of N*M (N>M) port number directly can remove output port N-M+1 to output port N this N-M output port by the array grating router of N*N port number symmetry and obtain.But this structure can require that some input port laser wavelength range of adjustment is very large, and such as input port N-1 and input port N require that laser instrument can at λ
1~ λ
nbetween regulate.This is very harsh to the cost requirement of device.
The asymmetrical arrayed-waveguide grating routers of port number provided by the present invention, can avoid this kind of situation to the restriction of structure.
Figure 1 shows that the fundamental block diagram of the present invention N*N arrayed-waveguide grating routers structure N*M arrayed-waveguide grating routers.For N*M arrayed-waveguide grating routers, its N number of input port is N number of input port of N*N arrayed-waveguide grating routers, and its M output port is that N number of input port of N*N arrayed-waveguide grating routers is obtained by photo-coupler coupling.
Fig. 1 structure has following two point patterns:
(1) the wavelength regulation scope of the optical sender of N number of input port is M times of wavelength interval.Illustrate, if structure is spaced apart the 16*4 arrayed-waveguide grating routers of 100GHz, the wavelength regulation scope of the optical sender of each input port is 400GHz, namely 3.2nm.
(2) non-blocking.When any input port is regulated in its wavelength coverage, produce when can not regulate in its wavelength coverage with other any input port and conflict.
Fig. 2, for KM*KM arrayed-waveguide grating routers, describes the detail constructing KM*M structure by KM*KM structure.Input port 1 is λ to the wavelength tuning range of input port M
1~ λ
m, the wavelength tuning range of input port M+1 to input port 2M is λ
m+1~ λ
2Mthe wavelength tuning range of input port (K-1) M+1 to input port KM is λ
(K-1) M+1~ λ
kM.The output port 1 of the KM*M arrayed-waveguide grating routers constructed is the output port 1 of KM*KM arrayed-waveguide grating routers, the output port 2 of the KM*M arrayed-waveguide grating routers constructed is coupled by the output port 2 of KM*KM arrayed-waveguide grating routers and output port (K-1) M+2 and obtains, and the output port 3 of the KM*M arrayed-waveguide grating routers constructed is coupled by the output port 3 of KM*KM arrayed-waveguide grating routers and output port (K-1) M+3 and obtains ... the output port M of the KM*M arrayed-waveguide grating routers constructed is coupled by the output port M of KM*KM arrayed-waveguide grating routers and output port KM and obtains.
Fig. 3 describes the typical apply of unsymmetric structure in Next Generation Access.This application is based on the concept in laser instrument pond.The laser instrument of N number of Wavelength tunable is positioned over respectively the input port of N*M arrayed-waveguide grating routers, forms a laser instrument pond.M output port of arrayed-waveguide grating routers is connected to different networks respectively.For each tunable laser, by being adjusted to certain specific wavelength, certain specific port can be exported.Like this, when certain region (in such as Fig. 2 network 1) required bandwidth ratio is larger, more laser instrument can be outputted to the port corresponding to this region, thus achieve the flexible dispatching of resource.In addition when the bandwidth demand of whole network is lower, some laser instrument of closedown that can be suitable, thus realize energy-conservation, improve the energy efficiency of whole network.
What the present invention proposed utilizes the arrayed-waveguide grating routers of port number symmetry to construct the method for the arrayed-waveguide grating routers of port number unsymmetric structure, due to the reversibility of optical path of arrayed-waveguide grating routers, structure situation output port number being greater than to the asymmetric arrayed-waveguide grating routers of input port number is applicable equally.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. the asymmetrical arrayed-waveguide grating routers of port number, the asymmetrical arrayed-waveguide grating routers of described port number refers to that the input port number N of arrayed-waveguide grating routers and output port number M are not identical, namely, N ≠ M, it is characterized in that, comprise arrayed-waveguide grating routers and the photo-coupler of port number symmetry, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers is identical with output port number, described photo-coupler is used for multiple output port to be coupled to an output port, or multiple input port is coupled to an input port.
2. the asymmetrical arrayed-waveguide grating routers of port number according to claim 1, it is characterized in that, described N > M, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers and output port number are all N, the number of described photo-coupler is M, and the wavelength coverage of N number of input port is M times of wavelength interval.
3. the asymmetrical arrayed-waveguide grating routers of port number according to claim 1, it is characterized in that, described N < M, the arrayed-waveguide grating routers of described port number symmetry refers to that the input port number of arrayed-waveguide grating routers and output port number are all M, the number of described photo-coupler to be the wavelength coverage of N, M output port the be N of wavelength interval doubly.
4. the asymmetrical arrayed-waveguide grating routers of port number according to claim 2, is characterized in that, described photo-coupler is used for multiple output ports of symmetric array waveguide grating router to be coupled as an output port.
5. the asymmetrical arrayed-waveguide grating routers of port number according to claim 3, is characterized in that, described photo-coupler is used for multiple input ports of symmetric array waveguide grating router to be coupled as an input port.
6. one kind as Claims 1 to 5 arbitrary as described in the application of the asymmetrical arrayed-waveguide grating routers of port number, it is characterized in that, in N > M situation, the laser instrument of N number of Wavelength tunable is positioned over respectively the input port of N*M arrayed-waveguide grating routers, form a laser instrument pond, M output port of arrayed-waveguide grating routers is connected to different networks respectively, for each tunable laser, by being adjusted to certain specific wavelength, export certain specific port, like this, when needed for certain region, bandwidth ratio is larger, more laser instrument can be outputted to the port corresponding to this region, thus realize the flexible dispatching of resource, when the bandwidth demand of whole network is lower, some laser instrument of suitable closedown, thus realize energy-conservation, improve the energy efficiency of whole network.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795654A (en) * | 2014-02-14 | 2014-05-14 | 上海交通大学 | Non-blocking Clos switching network design method based on AWG |
| CN104080018A (en) * | 2014-06-13 | 2014-10-01 | 上海交通大学 | TWDM-PON transmission system with load aggregating and energy-saving functions |
| CN104244118A (en) * | 2014-08-20 | 2014-12-24 | 上海交通大学 | Modularization interconnecting network, establishing method and application based on arrayed waveguide gratings |
-
2015
- 2015-12-15 CN CN201510939681.2A patent/CN105511016A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795654A (en) * | 2014-02-14 | 2014-05-14 | 上海交通大学 | Non-blocking Clos switching network design method based on AWG |
| CN104080018A (en) * | 2014-06-13 | 2014-10-01 | 上海交通大学 | TWDM-PON transmission system with load aggregating and energy-saving functions |
| CN104244118A (en) * | 2014-08-20 | 2014-12-24 | 上海交通大学 | Modularization interconnecting network, establishing method and application based on arrayed waveguide gratings |
Non-Patent Citations (1)
| Title |
|---|
| TONG YE，TONY T.LEE，WEISHENG HU: "A Study of Modular AWGs for Large-Scale Optical Switching Systems", 《JOURNAL OF LIGHTWAVE THCHNOLOGY》 * |
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