CN202649507U - Integrated optical waveguide structure in PLC optical branching device chip - Google Patents
Integrated optical waveguide structure in PLC optical branching device chip Download PDFInfo
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- CN202649507U CN202649507U CN 201220238308 CN201220238308U CN202649507U CN 202649507 U CN202649507 U CN 202649507U CN 201220238308 CN201220238308 CN 201220238308 CN 201220238308 U CN201220238308 U CN 201220238308U CN 202649507 U CN202649507 U CN 202649507U
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Abstract
The utility model relates to an integrated optical waveguide structure in a PLC optical branching device chip. The structure comprises a straight waveguide, and a first input curved waveguide and a second input curved waveguide, and a first output curved waveguide and a second output curved waveguide which are respectively connected to two ends of the straight waveguide. The first input curved waveguide, the second input curved waveguide, the first output curved waveguide, and the second output curved waveguide form a 2*2 X junction type coupled structure. The width of the second input curved waveguide is larger than the width of the first input curved waveguide. The curvature radius of the first input curved waveguide is equal or unequal to the curvature radius of the second input curved waveguide. Compared with the prior art, the integrated optical waveguide structure in the PLC optical branching device chip has the advantages of small length, good bandwidth flatness, easiness to integration, etc.
Description
Technical field
The utility model belongs to the integrated optics field, relates in particular to the asymmetric x knot coupled structure of 2x2 and the application thereof of optical waveguide in a kind of glass-based integrated optics.
Background technology
Photo-coupler is a kind of device of using often in the optical communication network, is a kind of important passive device.What generally adopt at present is that the optical fiber fused tapering legal system is standby.Two single-mode fibers are removed surrounding layer and coat, exposed sandwich layer is out drawn close, heating and melting at high temperature, and to two side stretchings.Such two sandwich layers are close to each other together reaching about 10 μ m just, and luminous energy can be coupled mutually.Real-time testing in the manufacturing process, the Real-Time Monitoring splitting ratio is according to feedback result control fused biconical taper process.
But the coupled apparatus that optical fiber fused tapering makes is long, if be used in 2 * 4,2 * 8,2 * 16,2 * 32,2 * 64,2 * 128, in 2 * 256 devices, then total device length can be very large.And the splitting ratio of this coupling mechanism is relevant with optical wavelength, and the bandwidth flatness is bad.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of length little for the defective that overcomes above-mentioned prior art existence, and the bandwidth flatness is good, is easy to the integrated optical waveguiding structure in the integrated PLC optical branching-device chip.
The purpose of this utility model can be achieved through the following technical solutions: the integrated optical waveguiding structure in a kind of PLC optical branching-device chip, it is characterized in that, this structure comprises straight wave guide, and the straight wave guide two ends connect respectively first the input curved waveguide, the second input curved waveguide, the first output curved waveguide and the second output curved waveguide, consist of 2 * 2 X junction type coupled structure, the width of described the second input curved waveguide is greater than the width of the first input curved waveguide, and the radius-of-curvature of described the first input curved waveguide and the second input curved waveguide equates or do not wait.
The width of described the first input curved waveguide is 1.5～10 μ m, and radius-of-curvature is 200000～2000000 μ m, and the angle of starting point place and horizontal direction is 0.5～10 degree, terminal join with straight wave guide, and be 0 to spend at the angle of phase contact place and horizontal direction.
The width of described the second input curved waveguide is 2～20 μ m, and radius-of-curvature is 200000～2000000 μ m, and the angle of starting point place and horizontal direction is 0.5～10 degree, terminal join with straight wave guide, and be 0 to spend at the angle of phase contact place and horizontal direction.
The width of described straight wave guide is the width sum of width and the first input curved waveguide of the second input curved waveguide, length is 0～1000 μ m, the angle of straight wave guide and horizontal direction is 0 degree, the straight wave guide front end connects the first input curved waveguide and the second input curved waveguide, and the rear end connects the first output curved waveguide and the second output curved waveguide.
The width of described straight wave guide is 3.5～30 μ m.
The width of described the first output curved waveguide is 1.5～15 μ m, and radius-of-curvature is 15000～100000 μ m, and the angle of starting point place and horizontal direction is 0.1～1 degree, and terminal angle with horizontal direction is 0.7～20 degree.
The width of described the second output curved waveguide is 1.5～15 μ m, and radius-of-curvature is 15000～100000 μ m, and the angle of starting point place and horizontal direction is 0.1～1 degree, and terminal angle with horizontal direction is 0.7～20 degree.
The width of described the second output curved waveguide equals the width of the first output curved waveguide, and the width sum of the width of the first output curved waveguide and the second output curved waveguide equals the width of straight wave guide, the radius-of-curvature of described the second output curved waveguide equals the radius-of-curvature of the first output curved waveguide, the angle of described second output curved waveguide starting point place and horizontal direction equals the angle of the first output curved waveguide starting point place and horizontal direction, and the terminal angle with horizontal direction of described the second output curved waveguide equals the angle of the first output curved waveguide end and horizontal direction.
Compared with prior art, the utility model 2 * 2 asymmetric x tie coupled structures, are mainly used in the equal division and combination ripple of luminous energy, are the integrated optical waveguiding structures that is used in PLC optical branching device 2 * N-type chip, and this structure comprises two input ends and two output terminals.Light can reach the function that is divided into two-beam from any one input of two input ends.Two output terminals are propagated the luminous energy that is divided into two to follow-up light path, to finish other purpose or function.Should tie coupled structure as the first order by asymmetric x, the follow-up Y bifurcation structure that connects successively can obtain 2 * 4,2 * 8,2 * 16,2 * 32,2 * 64,2 * 128,2 * 256 functional devices.Compare (N=4,8,16,32,64,128,256) with common 1 * N device, input end is many one road alternate channel when fiber optic network has one tunnel fault, can switch to alternate channel and continue to use, and has improved the reliability of optical-fiber network.The utility model structure is compared with optical fiber fused tapering type photo-coupler, and it is little to have length, and the bandwidth flatness is good, is easy to integrated advantage.
2 * 2 coupling mechanisms of the PLC integrated optics chip type that the utility model is released, its advantage has: (1) loss is insensitive to optical wavelength transmission, can satisfy the transmission needs of different wave length; (2) light splitting is even, can be with the signal uniform distribution to the user; (3) compact conformation, volume is little, cooperates 1 * 2 Y bifurcated waveguide, can be designed to 2 * 4,2 * 8,2 * 16,2 * 32,2 * 64,2 * 128,2 * 256 devices such as grade, and the port number of single-chip is many; (5) the multichannel cost is low, and minute way is more, and cost advantage is more obvious.
Description of drawings
Fig. 1 is the integrated optical waveguiding structure synoptic diagram in a kind of PLC optical branching-device chip of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment 1
As shown in Figure 1, integrated optical waveguiding structure in a kind of PLC optical branching device 2 * N-type chip, this structure comprises straight wave guide 111, and the first input curved waveguide 101, the second input curved waveguide 106, the first output curved waveguide 114 and second that the straight wave guide two ends connect are respectively exported curved waveguide 119, the X junction type coupled structure of formation 2 * 2.
The width W 102 of described the first input curved waveguide 101 is 1.5 μ m, radius of curvature R 103 is 200000 μ m, the included angle A 104 of starting point place and horizontal direction is 0.5 degree, terminal is connected to mutually a P105 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
The width W 107 of described the second input curved waveguide 106 is 2 μ m, and radius of curvature R 108 is 200000 μ m, and the included angle A 109 of starting point place and horizontal direction is 0.5 degree, terminal is connected to mutually a P110 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.The width W 107 of described the second input curved waveguide 106 is greater than the width W 102 of the first input curved waveguide 101, and the radius-of-curvature of described the first input curved waveguide 101 and the second input curved waveguide 106 equates.
The width W 112 of described straight wave guide 111 is the width W 107 of the second input curved waveguide 106 and width W 102 sums of the first input curved waveguide 101, the width W 112 that is straight wave guide 111 is 3.5 μ m, length L 113 is 0 μ m, straight wave guide 111 is 0 degree with the angle of horizontal direction, straight wave guide 111 front ends connect the first input curved waveguide 101 and the second input curved waveguide 106, and the rear end connects the first output curved waveguide 114 and the second output curved waveguide 119.
The width W 115 of described the first output curved waveguide 114 is 1.75 μ m, and radius of curvature R 116 is 15000 μ m, and the included angle A 117 of starting point place and horizontal direction is 0.1 degree, and terminal included angle A 118 with horizontal direction is 0.7 degree.
The width W 120 of described the second output curved waveguide 119 is 1.75 μ m, and radius of curvature R 121 is 15000 μ m, and the included angle A 122 of starting point place and horizontal direction is 0.1 degree, and terminal included angle A 123 with horizontal direction is 0.7 degree.The width W 120 of described the second output curved waveguide 119 equals the width W 115 of the first output curved waveguide 114, and width W 120 sums of the width W 115 of the first output curved waveguide 114 and the second output curved waveguide 119 equal the width W 112 of straight wave guide 111, the radius of curvature R 121 of described the second output curved waveguide 119 equals the radius of curvature R 116 of the first output curved waveguide 114, the included angle A 122 of described second output curved waveguide 119 starting point places and horizontal direction equals the included angle A 117 of the first output curved waveguide 114 starting point places and horizontal direction, and described the second output curved waveguide 119 terminal included angle A 123 with horizontal direction equal the included angle A 118 of the first output curved waveguide 114 ends and horizontal direction.
Embodiment 2
Referring to shown in Figure 1, integrated optical waveguiding structure in a kind of PLC optical branching device 2 * N-type chip, this structure comprises straight wave guide 111, and the first input curved waveguide 101, the second input curved waveguide 106, the first output curved waveguide 114 and second that the straight wave guide two ends connect are respectively exported curved waveguide 119, the X junction type coupled structure of formation 2 * 2.
The width W 102 of described the first input curved waveguide 101 is 10 μ m, and radius of curvature R 103 is 2000000 μ m, and the included angle A 104 of starting point place and horizontal direction is 10 degree, terminal is connected to mutually a P105 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
The width W 107 of described the second input curved waveguide 106 is 20 μ m, and radius of curvature R 108 is 2000000 μ m, and the included angle A 109 of starting point place and horizontal direction is 10 degree, terminal is connected to mutually a P110 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
The width W 107 of described the second input curved waveguide 106 is greater than the width W 102 of the first input curved waveguide 101, and the radius-of-curvature of described the first input curved waveguide 101 and the second input curved waveguide 106 equates.
The width W 112 of described straight wave guide 111 is the width W 107 of the second input curved waveguide 106 and width W 102 sums of the first input curved waveguide 101, the width W 112 of described straight wave guide 111 is 30 μ m, length L 113 is 1000 μ m, straight wave guide 111 is 0 degree with the angle of horizontal direction, straight wave guide 111 front ends connect the first input curved waveguide 101 and the second input curved waveguide 106, and the rear end connects the first output curved waveguide 114 and the second output curved waveguide 119.
The width W 115 of described the first output curved waveguide 114 is 15 μ m, and radius of curvature R 116 is 100000 μ m, and the included angle A 117 of starting point place and horizontal direction is 1 degree, and terminal included angle A 118 20 with horizontal direction is spent.
The width W 120 of described the second output curved waveguide 119 is 15 μ m, and radius of curvature R 121 is 100000 μ m, and the included angle A 122 of starting point place and horizontal direction is 1 degree, and terminal included angle A 123 with horizontal direction is 20 degree.
The width W 120 of described the second output curved waveguide 119 equals the width W 115 of the first output curved waveguide 114, and width W 120 sums of the width W 115 of the first output curved waveguide 114 and the second output curved waveguide 119 equal the width W 112 of straight wave guide 111, the radius of curvature R 121 of described the second output curved waveguide 119 equals the radius of curvature R 116 of the first output curved waveguide 114, the included angle A 122 of described second output curved waveguide 119 starting point places and horizontal direction equals the included angle A 117 of the first output curved waveguide 114 starting point places and horizontal direction, and described the second output curved waveguide 119 terminal included angle A 123 with horizontal direction equal the included angle A 118 of the first output curved waveguide 114 ends and horizontal direction.
Embodiment 3
Wherein: the width W 102 of the first input curved waveguide 101 is 5 μ m, and radius of curvature R 103 is 1000000 μ m, and the included angle A 104 of starting point place and horizontal direction is 5 degree, terminal is connected to mutually a P105 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
The width W 107 of described the second input curved waveguide 106 is 10 μ m, and radius of curvature R 108 is 1500000 μ m, and the included angle A 109 of starting point place and horizontal direction is 5 degree, terminal is connected to mutually a P110 with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
The width W 107 of described the second input curved waveguide 106 is greater than the width W 102 of the first input curved waveguide 101, and the radius-of-curvature of described the first input curved waveguide 101 and the second input curved waveguide 106 does not wait.
The width W 112 of described straight wave guide 111 is 15 μ m, and length L 113 is 500 μ m.
The width W 115 of described the first output curved waveguide 114 is 7.5 μ m, and radius of curvature R 116 is 50000 μ m, and the included angle A 117 of starting point place and horizontal direction is 0.5 degree, and terminal included angle A 118 with horizontal direction is 10 degree.
The width W 120 of described the second output curved waveguide 119 is 7.5 μ m, and radius of curvature R 121 is 50000 μ m, and the included angle A 122 of starting point place and horizontal direction is 0.5 degree, and terminal included angle A 123 with horizontal direction is 10 degree.All the other are with embodiment 1.
With the utility model as first order structure, the back connects the y-branch structure, can consist of 2 * 4 branched structure, 2 * 8 branched structure, 2 * 16 branched structure, 2 * 32 branched structure, 2 * 64 branched structure, 2 * 128 branched structure or branched structure of 2 * 256 etc.And rationally adjust the parameter of its branched structure, can shorten the device overall length.
Claims (8)
1. the integrated optical waveguiding structure in the PLC optical branching-device chip, it is characterized in that, this structure comprises straight wave guide, and the first input curved waveguide, the second input curved waveguide, the first output curved waveguide and second that the straight wave guide two ends connect are respectively exported curved waveguide, consist of 2 * 2 X junction type coupled structure, the width of described the second input curved waveguide is greater than the width of the first input curved waveguide.
2. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 1, it is characterized in that, the width of described the first input curved waveguide is 1.5～10 μ m, radius-of-curvature is 200000～2000000 μ m, the angle of starting point place and horizontal direction is 0.5～10 degree, terminal joining with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
3. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 1, it is characterized in that, the width of described the second input curved waveguide is 2～20 μ m, radius-of-curvature is 200000～2000000 μ m, the angle of starting point place and horizontal direction is 0.5～10 degree, terminal joining with straight wave guide, is 0 to spend at the angle of phase contact place and horizontal direction.
4. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 1, it is characterized in that, the width of described straight wave guide is the width sum of width and the first input curved waveguide of the second input curved waveguide, length is 0～1000 μ m, the angle of straight wave guide and horizontal direction is 0 degree, the straight wave guide front end connects the first input curved waveguide and the second input curved waveguide, and the rear end connects the first output curved waveguide and the second output curved waveguide.
5. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 4 is characterized in that, the width of described straight wave guide is 3.5～30 μ m.
6. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 1, it is characterized in that, the width of described the first output curved waveguide is 1.5～15 μ m, radius-of-curvature is 15000～100000 μ m, the angle of starting point place and horizontal direction is 0.1～1 degree, and terminal angle with horizontal direction is 0.7～20 degree.
7. the integrated optical waveguiding structure in a kind of PLC optical branching-device chip according to claim 1, it is characterized in that, the width of described the second output curved waveguide is 1.5～15 μ m, radius-of-curvature is 15000～100000 μ m, the angle of starting point place and horizontal direction is 0.1～1 degree, and terminal angle with horizontal direction is 0.7～20 degree.
8. according to claim 6 or the integrated optical waveguiding structure in 7 described a kind of PLC optical branching-device chips, it is characterized in that, the width of described the second output curved waveguide equals the width of the first output curved waveguide, and the width sum of the width of the first output curved waveguide and the second output curved waveguide equals the width of straight wave guide, the radius-of-curvature of described the second output curved waveguide equals the radius-of-curvature of the first output curved waveguide, the angle of described second output curved waveguide starting point place and horizontal direction equals the angle of the first output curved waveguide starting point place and horizontal direction, and the terminal angle with horizontal direction of described the second output curved waveguide equals the angle of the first output curved waveguide end and horizontal direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220238308 CN202649507U (en) | 2012-05-24 | 2012-05-24 | Integrated optical waveguide structure in PLC optical branching device chip |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220238308 CN202649507U (en) | 2012-05-24 | 2012-05-24 | Integrated optical waveguide structure in PLC optical branching device chip |
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| CN202649507U true CN202649507U (en) | 2013-01-02 |
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| CN 201220238308 Expired - Fee Related CN202649507U (en) | 2012-05-24 | 2012-05-24 | Integrated optical waveguide structure in PLC optical branching device chip |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: 215400 Taicang Economic Development Zone, Jiangsu, Qingdao West Road, No. 38, No. Patentee after: Suzhou light mantle integrated optics Co., Ltd. Address before: Zhabei District ejon 200072 Shanghai 777 Lane 14, Room 102 Patentee before: Shanghai Guangxin Integrated Optical Co., Ltd. Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200525 Address after: 213000 Jiangsu province west of the city of Changzhou Taihu science and Technology Industrial Park Dragon Road No. 2 Patentee after: Changzhou optical core integrated optics Co., Ltd Address before: 215400 Taicang Economic Development Zone, Jiangsu, Qingdao West Road, No. 38, No. Patentee before: SUZHOU OPTICORE INTEGRATED OPTICAL Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20210524 |
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| CF01 | Termination of patent right due to non-payment of annual fee |