CN101551489A - One multiply N power splitter comprising wavelength selectivity - Google Patents
One multiply N power splitter comprising wavelength selectivity Download PDFInfo
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- CN101551489A CN101551489A CNA2009100978761A CN200910097876A CN101551489A CN 101551489 A CN101551489 A CN 101551489A CN A2009100978761 A CNA2009100978761 A CN A2009100978761A CN 200910097876 A CN200910097876 A CN 200910097876A CN 101551489 A CN101551489 A CN 101551489A
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Abstract
The invention discloses an one multiply N power splitter comprising wavelength selectivity, including an input optical waveguide, an output optical waveguide and an input/output coupler, N beam optical waveguides and N beam couplers. The N beam optical waveguides and N beam couplers are distributed on the same side or two sides of the input/output coupler; the input/output coupler is connected with each beam coupler in turns to compose a circular cavity. OPtical signals enters the input/output coupler through the input optical waveguide, and signals satisfies resonance condition of the circular cavity outputs from the N beam optical waveguides through N beam couplers, and signals not satisfies resonance condition of the circular cavity outputs from the output optical waveguide. The invention provided one multiply N power splitter comprising wavelength selectivity combines function of filter and power splitter, and comprises advantages of small size, simple structure and easy implementation. The invention is suitable for optical waveguides of any types without additional technics steps, and comprises advantages of simple design, simple production technics and low cost.
Description
Technical field
The present invention relates to 1 * N power splitter, relate in particular to a kind of 1 * N power splitter with wavelength selectivity.
Background technology
Remove backbone network and Metropolitan Area Network (MAN), the important development Construction Party of Access Network becomes gradually optical communication that Fiber to the home to.Fiber to the home (FTTH) can provide profuse bandwidth to the user, is a kind of desirable access module, is that Future Optical Fibre Communication Systems solves the best way of " last kilometer ", and will becomes the sign of new generation broadband network.This sun adjuster spare has proposed new technical requirement and has opened up a brand-new application for it.
In Fiber to the home access net system, use passive optical network technique (PON, passive opticalnetwork) usually.Wherein, wave filter and 1 * N power splitter all are the essential basic components and parts in the PON network.Common power splitter technology comprises based on the 1 * N coupling mechanism of multiple-mode interfence (MMI, multimode interference) from 1 * NMMI of imaging coupling mechanism, the multistage Y of cascade branch.Yet these technology are difficult for realizing multichannel even power division ratio or any power division ratio, and device size is often bigger.In technology in the past,, use the combination of wave filter and power splitter usually in order to realize the function of channel selecting and broadcasting.This has not only increased device cost, has increased device size, has also reduced the reliability of device.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of 1 * N power splitter with wavelength selectivity is proposed, with the combination function of realization wave filter and power splitter, and obtain multichannel even power division ratio or any power division ratio, satisfy the demand of network system.
For reaching above-mentioned purpose, the present invention has following two kinds of technical solutions.
Scheme 1:
1 * N power splitter with wavelength selectivity of the present invention, comprise I/O coupling mechanism with two input ends and two output terminals, be distributed in N the beam-splitting coupler and the N bar beam splitting optical waveguide of I/O coupling mechanism the same side, N is a positive integer, each beam-splitting coupler has an input end and two output terminals, two ends after N beam-splitting coupler connected successively link to each other with first input end with first output terminal of I/O coupling mechanism respectively, constitute a ring cavity, another output terminal of each beam-splitting coupler connects a beam splitting optical waveguide respectively, second input termination input waveguide of I/O coupling mechanism, second output termination output optical waveguide, light signal enters the I/O coupling mechanism from input waveguide, satisfy the light signal of ring cavity condition of resonance and export from N bar beam splitting optical waveguide by N beam-splitting coupler, the light signal of discontented sufficient ring cavity condition of resonance is exported from output optical waveguide.
Scheme 2:
1 * N power splitter with wavelength selectivity of the present invention, comprise I/O coupling mechanism with three input ends and three output terminals, N beam-splitting coupler and N bar beam splitting optical waveguide, N is a positive integer, each beam-splitting coupler has an input end and two output terminals, wherein M beam-splitting coupler and M bar beam splitting optical waveguide are distributed in the individual beam-splitting coupler of a side, M ' of I/O coupling mechanism and the opposite side that M ' bar beam splitting optical waveguide is distributed in the I/O coupling mechanism, M+M '=N; Two ends after M beam-splitting coupler connected successively link to each other with first input end with first output terminal of I/O coupling mechanism respectively, constitute first ring cavity, two ends after the individual beam-splitting coupler of M ' is connected successively link to each other with second input end with second output terminal of I/O coupling mechanism respectively, constitute second ring cavity, another output terminal of each beam-splitting coupler connects a beam splitting optical waveguide respectively, the 3rd input termination input waveguide of I/O coupling mechanism, the 3rd output termination output optical waveguide, light signal enters the I/O coupling mechanism from input waveguide, the light signal that satisfies the ring cavity condition of resonance respectively by M and the individual beam-splitting coupler of M ' from M bar and the output of M ' bar beam splitting optical waveguide, be discontented with the light signal of sufficient ring cavity condition of resonance and export from output optical waveguide.
In above-mentioned two kinds of technical schemes, said I/O coupling mechanism and beam-splitting coupler can be based on horizontal evanescent wave coupling mechanism, or based on vertical evanescent wave coupling mechanism.
I/O coupling mechanism and beam-splitting coupler also can be based on horizontal multi-mode interference coupler, or based on vertical multi-mode interference coupler.
I/O coupling mechanism and beam-splitting coupler can also be based on-download filter construction or on-download the cascade structure of wave filter.
The present invention is by regulating the coupling coefficient of I/O coupling mechanism and beam-splitting coupler, can obtain the power splitter of any power division ratio of 1 * N power splitter of even power division ratio or 1 * N.
The beneficial effect that the present invention has is:
1. 1 * N the power splitter with wavelength selectivity of the present invention has merged the function of wave filter and power splitter, has the advantage that size is little, simple in structure, be easy to realize.
2. 1 * N the power splitter with wavelength selectivity of the present invention, by regulating the coupling coefficient of I/O coupling mechanism and beam-splitting coupler, be easy to obtain the power splitter of any power division ratio of 1 * N power splitter (and N can be arbitrary integer) of even power division ratio or 1 * N.
3. 1 * N the power splitter with wavelength selectivity of the present invention is suitable for the optical waveguide of any kind, does not need additional technical steps, has that structural design is simple, manufacture craft is simple, low cost and other advantages.
Description of drawings
Fig. 1 is the present invention program's 1 principle schematic;
Fig. 2 is the present invention program's 2 principle schematic;
Fig. 3 is a kind of instantiation of the present invention program 1;
Fig. 4 is another kind of instantiation of the present invention program 1;
Fig. 5 is the output spectrum figure of Fig. 4 example;
Fig. 6 is the third instantiation of the present invention program 1;
Fig. 7 is the output spectrum figure of Fig. 6 example;
Fig. 8 is the present invention program 1 the 4th a kind of instantiation;
Fig. 9 is a kind of instantiation of the present invention program 2.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1,1 * N power splitter with wavelength selectivity of the present invention, comprise I/O coupling mechanism 5 with two input ends and two output terminals, be distributed in N the beam-splitting coupler 3 and the N bar beam splitting optical waveguide 4 of I/O coupling mechanism 5 the same sides, N=6 in the legend, each beam-splitting coupler 3 has an input end and two output terminals, two ends after 6 beam-splitting coupler 3 are connected successively link to each other with first input end with first output terminal of I/O coupling mechanism 5 respectively, constitute a ring cavity, another output terminal of each beam-splitting coupler 3 connects a beam splitting optical waveguide 4 respectively, second input termination input waveguide 1 of I/O coupling mechanism 5, second output termination output optical waveguide 2 of I/O coupling mechanism 5.Light signal enters I/O coupling mechanism 5 from input waveguide 1, satisfies the light signal of ring cavity condition of resonance and exports from N bar beam splitting optical waveguide by N beam-splitting coupler, and the light signal of discontented sufficient ring cavity condition of resonance is from output optical waveguide 2 outputs.
With reference to Fig. 2,1 * N power splitter with wavelength selectivity of the present invention, comprise I/O coupling mechanism 5 with three input ends and three output terminals, N beam-splitting coupler 3 and N bar beam splitting optical waveguide 4, N=12 in the legend, each beam-splitting coupler 3 has an input end and two output terminals, wherein 6 beam-splitting coupler 3 and 6 beam splitting optical waveguides 4 are distributed in a side of I/O coupling mechanism 5, two ends after these 6 beam-splitting coupler are connected successively link to each other with first input end with first output terminal of I/O coupling mechanism 5 respectively, constitute first ring cavity, other 6 beam-splitting coupler 3 and 6 beam splitting optical waveguides 4 are distributed in the opposite side of I/O coupling mechanism 5, two ends after these 6 beam-splitting coupler 3 are connected successively link to each other with second input end with second output terminal of I/O coupling mechanism 5 respectively, constitute second ring cavity, another output terminal of each beam-splitting coupler 3 connects a beam splitting optical waveguide 4 respectively, the 3rd input termination input waveguide 1 of I/O coupling mechanism 5, the 3rd output termination output optical waveguide 2 of I/O coupling mechanism 5, light signal enters ring cavity from input waveguide 1 and by I/O coupling mechanism 5, satisfy the light signal of ring cavity condition of resonance and export from 6 beam splitting optical waveguides by 6 beam-splitting coupler respectively, the light signal of discontented sufficient ring cavity condition of resonance is from output optical waveguide 2 outputs.
Fig. 3 is a kind of instantiation that the present invention adopts scheme 1, in this example, and N=3, I/O coupling mechanism 5 and beam-splitting coupler 3 all adopt multi-mode interference coupler.
Fig. 4 is the another kind of instantiation that the present invention adopts scheme 1, in this example, and N=3, I/O coupling mechanism 5 and beam-splitting coupler 3 all adopt horizontal evanescent wave directional coupler.The ring cavity radius is 2.83 μ m, and resonance wavelength is 1534.22nm, comprises three beam splitting optical waveguides 4.Coupling coefficient by the I/O coupling mechanism is 0.1410, and the coupling coefficient of beam-splitting coupler is 0.0817.Fig. 5 has provided the output optical waveguide of Fig. 4 example and the output spectrum figure of three beam splitting optical waveguides (4-a, 4-b, 4-c).As seen from the figure, realized the power uniform distribution (33.3%: 33.3%: 33.3%) of resonance wavelength.
Fig. 6 is the third instantiation that the present invention adopts scheme 1, in this example, and N=3, wherein beam-splitting coupler 3 all adopts horizontal evanescent wave directional coupler, and I/O coupling mechanism 5 adopts-downloads filter construction.The ring cavity radius is 2.83 μ m, and resonance wavelength is 1534.22nm, comprises three beam splitting optical waveguides 4.Fig. 7 has provided the output optical waveguide of Fig. 6 example and the output spectrum figure of three beam splitting optical waveguides (4-a, 4-b, 4-c).As seen figure has realized the power uniform distribution (33.3%: 33.3%: 33.3%) of resonance wavelength, and has had the flat-head type frequency spectrum thus.
In order further to improve spectral response curve, also can be as shown in Figure 8, I/O coupling mechanism 5 adopts-downloads the cascade structure of wave filter, and beam-splitting coupler 3 adopts horizontal evanescent wave directional coupler.
Fig. 9 is a kind of instantiation of the present invention program 2, in this example, and N=3, I/O coupling mechanism 5 and beam-splitting coupler 3 all adopt horizontal evanescent wave directional coupler.
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (8)
1, a kind of 1 * N power splitter with wavelength selectivity, it is characterized in that comprising I/O coupling mechanism (5) with two input ends and two output terminals, be distributed in N the beam-splitting coupler (3) and the N bar beam splitting optical waveguide (4) of I/O coupling mechanism (5) the same side, N is a positive integer, each beam-splitting coupler (3) has an input end and two output terminals, two ends after N beam-splitting coupler (3) connected successively link to each other with first input end with first output terminal of I/O coupling mechanism (5) respectively, constitute a ring cavity, another output terminal of each beam-splitting coupler (3) connects a beam splitting optical waveguide (4) respectively, second input termination input waveguide (1) of I/O coupling mechanism (5), second output termination output optical waveguide (2), light signal enters I/O coupling mechanism (5) from input waveguide (1), satisfy the light signal of ring cavity condition of resonance and export from N bar beam splitting optical waveguide by N beam-splitting coupler, the light signal of discontented sufficient ring cavity condition of resonance is exported from output optical waveguide (2).
2, the 1 * N power splitter with wavelength selectivity according to claim 1 is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) are based on horizontal evanescent wave coupling mechanism, or based on vertical evanescent wave coupling mechanism.
3, the 1 * N power splitter with wavelength selectivity according to claim 1 is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) are based on horizontal multi-mode interference coupler, or based on vertical multi-mode interference coupler.
4, the 1 * N power splitter with wavelength selectivity according to claim 1, it is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) be based on-download wave filter or on-download the cascade structure of wave filter.
5, a kind of 1 * N power splitter with wavelength selectivity, it is characterized in that comprising I/O coupling mechanism (5) with three input ends and three output terminals, N beam-splitting coupler (3) and N bar beam splitting optical waveguide (4), N is a positive integer, each beam-splitting coupler (3) has an input end and two output terminals, wherein M beam-splitting coupler (3) and M bar beam splitting optical waveguide (4) are distributed in a side of I/O coupling mechanism (5), individual beam-splitting coupler of M ' (3) and M ' bar beam splitting optical waveguide (4) are distributed in the opposite side of I/O coupling mechanism (5), M+M '=N; Two ends after M beam-splitting coupler (3) connected successively link to each other with first input end with first output terminal of I/O coupling mechanism (5) respectively, constitute first ring cavity, two ends after the individual beam-splitting coupler of M ' (3) is connected successively link to each other with second input end with second output terminal of I/O coupling mechanism (5) respectively, constitute second ring cavity, another output terminal of each beam-splitting coupler (3) connects a beam splitting optical waveguide (4) respectively, the 3rd input termination input waveguide (1) of I/O coupling mechanism (5), the 3rd output termination output optical waveguide (2), light signal enters I/O coupling mechanism (5) from input waveguide (1), the light signal that satisfies the ring cavity condition of resonance respectively by M and the individual beam-splitting coupler of M ' from M bar and the output of M ' bar beam splitting optical waveguide, be discontented with the light signal of sufficient ring cavity condition of resonance and export from output optical waveguide (2).
6, the 1 * N power splitter with wavelength selectivity according to claim 5 is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) are based on horizontal evanescent wave coupling mechanism, or based on vertical evanescent wave coupling mechanism.
7, the 1 * N power splitter with wavelength selectivity according to claim 5 is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) are based on horizontal multi-mode interference coupler, or based on vertical multi-mode interference coupler.
8, the 1 * N power splitter with wavelength selectivity according to claim 5, it is characterized in that I/O coupling mechanism (5) and beam-splitting coupler (3) be based on-download wave filter or on-download the cascade structure of wave filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100978761A CN101551489A (en) | 2009-04-20 | 2009-04-20 | One multiply N power splitter comprising wavelength selectivity |
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| CNA2009100978761A CN101551489A (en) | 2009-04-20 | 2009-04-20 | One multiply N power splitter comprising wavelength selectivity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279441A (en) * | 2011-07-22 | 2011-12-14 | 浙江工业大学 | Novel single-fiber triplexer for passive optical network |
| CN107797180A (en) * | 2017-11-28 | 2018-03-13 | 中国计量大学 | The THz wave multi-path power divider of circular configuration |
| CN109298426A (en) * | 2018-09-28 | 2019-02-01 | 吉林大学 | A kind of floodlight laser radar transmitter |
-
2009
- 2009-04-20 CN CNA2009100978761A patent/CN101551489A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279441A (en) * | 2011-07-22 | 2011-12-14 | 浙江工业大学 | Novel single-fiber triplexer for passive optical network |
| CN102279441B (en) * | 2011-07-22 | 2013-03-27 | 浙江工业大学 | Novel single-fiber triplexer for passive optical network |
| CN107797180A (en) * | 2017-11-28 | 2018-03-13 | 中国计量大学 | The THz wave multi-path power divider of circular configuration |
| CN109298426A (en) * | 2018-09-28 | 2019-02-01 | 吉林大学 | A kind of floodlight laser radar transmitter |
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Open date: 20091007 |