CN112462472A - Coupling method of PLC optical splitter - Google Patents
Coupling method of PLC optical splitter Download PDFInfo
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- CN112462472A CN112462472A CN202011338429.3A CN202011338429A CN112462472A CN 112462472 A CN112462472 A CN 112462472A CN 202011338429 A CN202011338429 A CN 202011338429A CN 112462472 A CN112462472 A CN 112462472A
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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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/30—Optical coupling means for use between fibre and thin-film device
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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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
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Abstract
The invention relates to a coupling method of a PLC optical splitter, and belongs to the technical field of integrated optics. The method comprises the steps of coupling and bonding an optical splitter chip containing 1 xM and FA of an M channel to form a1 xM input assembly, coupling and bonding an optical splitter chip containing 1 xN and FA of an N channel to form a1 xN output assembly, and collimating, coupling and bonding the 1 xM input assembly and the 1 xN output assembly to form the M xN optical splitter. The coupling method of the PLC optical splitter has the advantages of quick operation and good consistency; the positions of the coupling points of the input end component and the output end component can be finely adjusted in the coupling process, so that the process tolerance is increased, the finished product rate and the optical performance of the device are effectively improved, and the cost is reduced; the device type can be switched by combining the types of the input end component and the output end component, the customization degree is high, the research and development time is short, and the device type switching method has a wide application prospect.
Description
Technical Field
The invention relates to a coupling method of a PLC optical splitter, and belongs to the technical field of integrated optics.
Background
With the rapid development of optical networks, the structures of optical networks are also in diversified development. The need for various passive optical shunt structures has also been addressed.
Optical splitters required by modern optical networks are various in types, and particularly optical splitters with multiple inputs and multiple outputs have irreplaceable functions in some special use scenes. Design tolerance and process debugging need be considered in the design of integrated into one piece's planar waveguide type optical divider chip, and along with the increase of branch, the chip design degree of difficulty increases, is difficult to guarantee that limited number of times's design and wafer flow piece result satisfy the product demand, and chip development cost and research and development time are the geometric progression and rise. On the other hand, the conventional optical splitter coupling method is adopted to couple the optical splitters with multiple inputs and multiple outputs, so that the coupling mode is complex and the production efficiency is not high.
In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a coupling method for PLC optical splitters, so that the PLC optical splitters have industrial utility values.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a technical solution with large coupling tolerance, relatively low development cost, and relatively short development time, so as to overcome the above drawbacks of the prior art.
The invention relates to a coupling method of a PLC optical splitter, which comprises the steps of coupling and bonding an optical splitter chip containing 1 xM and FA of an M channel to form a1 xM input assembly, coupling and bonding an optical splitter chip containing 1 xN and FA of an N channel to form a1 xN output assembly, and aligning, coupling and bonding the 1 xM input assembly and the 1 xN output assembly to form the M xN optical splitter.
Further, in the coupling method of the PLC optical splitter, the width of the 1 × M input end optical waveguide of the 1 × M optical splitter chip is less than or equal to the width of the 1 × N input end optical waveguide of the 1 × N optical splitter chip, and is greater than or equal to the sum of the widths of the M branches of the output end optical waveguides.
Further, in the coupling method of the PLC optical splitter, the 1 × N input end optical waveguide width of the 1 × N optical splitter chip is greater than or equal to the sum of the output end N optical waveguide widths, and is less than or equal to 2 times the sum of the output end N optical waveguide widths.
Further, in the coupling method of the PLC optical splitter, the step of mutually collimating, coupling and bonding the 1 × M input module and the 1 × N output module includes:
s1, firstly accessing the port No. 1 of the M end, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the N channel at the output end, and ensuring that the insertion loss is in a qualified range;
s2, replacing the M port of the access M end, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the N channel of the output end, ensuring that the insertion loss is in a qualified range, and ensuring that the insertion loss of the device is still in the qualified range when the 1 port of the access M end is accessed.
By the scheme, the invention at least has the following advantages:
1. the coupling method of the PLC optical splitter has the advantages of quick operation and good consistency;
2. according to the coupling method of the PLC optical splitter, the positions of the coupling points of the input end component and the output end component can be finely adjusted in the coupling process, so that the process tolerance is increased, the finished product rate and the optical performance of the device are effectively improved, and the cost is reduced;
3. the coupling method of the PLC optical splitter can switch the device types by combining the types of the input end component and the output end component, and has high customization degree and short research and development time.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an assembled schematic view of an mxn optical splitter of the present invention;
FIG. 2 is a coupling schematic of a1 XM optical splitter according to the present invention;
FIG. 3 is a coupling schematic of a1 XN optical splitter of the present invention;
FIG. 4 is a coupling schematic of an MXN optical splitter according to the present invention;
wherein, in the figure,
1. a1 × M input component; 2. a1 XN output component;
11. 1 × M optical splitter chip; 12. FA of the M channel;
21. 1 xn optical splitter chip; 22. FA of N channel;
111. 1 × M input end optical waveguide; 112. m optical waveguides are arranged at the output end; 1121. port No. 1 of end M;
211. 1 XN input end optical waveguide; 212. and the output end is N optical waveguides.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, a coupling method of a PLC optical splitter includes coupling and bonding a1 × M optical splitter chip 11 and M-channel FA12 to form a1 × M input module 1, coupling and bonding a1 × N optical splitter chip 21 and N-channel FA22 to form a1 × N output module 2, and collimating, coupling and bonding the 1 × M input module 1 and the 1 × N output module 2 to each other to form an M × N optical splitter.
In the coupling method of the PLC optical splitter, the width of the 1 xM input end optical waveguide 111 of the 1 xM optical splitter chip 11 is less than or equal to the width of the 1 xN input end optical waveguide 211 of the 1 xN optical splitter chip 21, and is more than or equal to the sum of the widths of the M branch optical waveguides 112 of the output end.
In the coupling method of the PLC optical splitter, the width of the 1 xN input end optical waveguide 211 of the 1 xN optical splitter chip 21 is more than or equal to the sum of the widths of the N output end optical waveguides 212 and less than or equal to 2 times of the sum of the widths of the N output end optical waveguides 212.
In the coupling method of the PLC optical splitter, in the process of mutually collimating, coupling and bonding a1 xM input assembly 1 and a1 xN output assembly 2, a port 1121 No. 1 of an M end is accessed, a six-dimensional adjusting knob of a coupling table is adjusted, the insertion loss of an N channel of an output end is observed, and the insertion loss is ensured to be within a qualified range; and then replacing the port M connected to the end M, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the channel N at the output end, ensuring that the insertion loss is within a qualified range, and ensuring that the insertion loss of the device is still within the qualified range when the port 1 at the end M is connected to the port 1121.
Example 1
A coupling method of PLC optical splitter is to couple and bond the chip of 1X 2 optical splitter and FA of 2 channels to form 1X 2 input module, then couple and bond the chip of 1X 8 optical splitter and FA of 8 channels to form 1X 8 output module, then align and couple and bond the 1X 2 input module and 1X 8 output module to form 2X 8 optical splitter.
The width of the optical waveguide at the input end of the 1 x 2 optical splitter chip is 100 micrometers, and the widths of the optical waveguides at the 2 output ends are respectively 50 micrometers;
the width of an input end optical waveguide of the 1 x 8 optical splitter chip is 400 micrometers, and the widths of 8 output end optical waveguides are respectively 50 micrometers;
in the process of mutually collimating, coupling and bonding a1 × 2 input assembly and a1 × 8 output assembly of the PLC 2 × 8 optical splitter, firstly accessing a port 1 at the 2 end, adjusting a six-dimensional adjusting knob of a coupling table, observing the insertion loss of an 8-channel output end, and ensuring that the insertion loss is within a qualified range; and then replacing the port No. 2 accessed to the port No. 2, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the channel at the output end 8, ensuring that the insertion loss is in a qualified range, and ensuring that the insertion loss of a device is still in the qualified range when the port No. 1 accessed to the port No. 2.
Example 2
A coupling method of PLC optical splitter is to couple and bond the chip of 1X 5 optical splitter and 5 channels of FA to form 1X 5 input module, then couple and bond the chip of 1X 32 optical splitter and 32 channels of FA to form 1X 32 output module, then align and couple and bond the 1X 5 input module and 1X 32 output module to form 5X 32 optical splitter.
The input end optical waveguide width of the 1 × 5 optical splitter chip is 100 μm, and the 5 optical waveguide widths at the output end are respectively 18 μm;
the input end optical waveguide width of the 1 x 32 optical splitter chip is 640 μm, and the output end 32 optical waveguide widths are respectively 10 μm;
in the process of mutually collimating, coupling and bonding a1 × 5 input assembly and a1 × 32 output assembly of the PLC 5 × 32 optical splitter, firstly connecting a No. 1 port at the 5 end, adjusting a six-dimensional adjusting knob of a coupling table, observing the insertion loss of a 32-channel output end, and ensuring that the insertion loss is in a qualified range; and then replacing the port No. 5 accessed to the port No. 5, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the output end 32 channel, ensuring that the insertion loss is in a qualified range, and ensuring that the insertion loss of a device is still in the qualified range when the port No. 1 accessed to the port No. 5.
Example 3
A coupling method of PLC optical splitter is to couple and bond the chip of 1X 16 optical splitter and FA of 16 channels to form 1X 16 input module, then couple and bond the chip of 1X 12 optical splitter and FA of 12 channels to form 1X 12 output module, then align and couple and bond the 1X 16 input module and the 1X 12 output module to form 16X 12 optical splitter.
The input end optical waveguide width of the 1 × 16 optical splitter chip is 1600 μm, and the output end 16 optical waveguides are respectively 80 μm;
the input end optical waveguide width of the 1 × 12 optical splitter chip is 1600 μm, and the output and 12 optical waveguide widths are 130 μm respectively;
in the process of mutually collimating, coupling and bonding a1 × 16 input assembly and a1 × 12 output assembly of the PLC 16 × 12 optical splitter, firstly connecting a No. 1 port at a 16 end, adjusting a six-dimensional adjusting knob of a coupling table, observing the insertion loss of a 12-channel output end, and ensuring that the insertion loss is in a qualified range; then, the 16 port of the 16 access end is replaced, the six-dimensional adjusting knob of the coupling table is adjusted, the insertion loss of the 12 channel of the output end is observed, the insertion loss is ensured to be in a qualified range, and the insertion loss of a device is still in the qualified range when the 16 port of the 16 access end is accessed.
The invention has the following advantages:
1. the coupling method of the PLC optical splitter has the advantages of quick operation and good consistency;
2. according to the coupling method of the PLC optical splitter, the positions of the coupling points of the input end component and the output end component can be finely adjusted in the coupling process, so that the process tolerance is increased, the finished product rate and the optical performance of the device are effectively improved, and the cost is reduced;
3. the coupling method of the PLC optical splitter can switch the device types by combining the types of the input end component and the output end component, and has high customization degree and short research and development time.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A coupling method of a PLC optical splitter is characterized in that a1 xM optical splitter chip (11) and an FA (12) of an M channel are coupled and bonded to form a1 xM input assembly (1), a1 xN optical splitter chip (21) and an FA (22) of an N channel are coupled and bonded to form a1 xN output assembly (2), and the 1 xM input assembly (1) and the 1 xN output assembly (2) are aligned, coupled and bonded to each other to form the M xN optical splitter.
2. The coupling method of the PLC optical splitter according to claim 1, wherein in the coupling method of the PLC optical splitter, the width of the 1 xM input end optical waveguide (111) of the 1 xM optical splitter chip (11) is less than or equal to the width of the 1 xN input end optical waveguide (211) of the 1 xN optical splitter chip (21), and is greater than or equal to the sum of the widths of the M output end optical waveguides (112).
3. The coupling method of the PLC optical splitter according to claim 1, wherein in the coupling method of the PLC optical splitter, the width of the 1 × N input end optical waveguide (211) of the 1 × N optical splitter chip (21) is greater than or equal to the sum of the widths of the N output end optical waveguides (212), and is less than or equal to 2 times the sum of the widths of the N output end optical waveguides (212).
4. The coupling method of the PLC optical splitter according to claim 1, wherein the coupling method of the PLC optical splitter comprises the steps of coupling and bonding the 1 xm input module (1) and the 1 xn output module (2) to each other in alignment:
s1, accessing a No. 1 port (1121) of the M end, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the N channel at the output end, and ensuring that the insertion loss is in a qualified range;
s2, replacing the M port of the access M end, adjusting a six-dimensional adjusting knob of the coupling table, observing the insertion loss of the output end N channel, ensuring that the insertion loss is in a qualified range, and ensuring that the device insertion loss is still in the qualified range when the No. 1 port (1121) of the access M end is accessed.
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| CN202011338429.3A CN112462472B (en) | 2020-11-25 | 2020-11-25 | Coupling method of PLC optical splitter |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH650866A5 (en) * | 1979-04-18 | 1985-08-15 | Int Standard Electric Corp | Method for producing a star coupler arrangement for connecting two optical-fibre cables |
| CN2927081Y (en) * | 2006-07-24 | 2007-07-25 | 深圳飞通光电子技术有限公司 | Planar optical waveguide power beam splitter |
| CN107479130A (en) * | 2017-08-28 | 2017-12-15 | 浙江富春江光电科技有限公司 | A kind of fiber waveguide core body wafer and fiber waveguide core body and preparation method thereof |
| CN213210531U (en) * | 2020-10-26 | 2021-05-14 | 常州光芯集成光学有限公司 | PLC optical splitter |
-
2020
- 2020-11-25 CN CN202011338429.3A patent/CN112462472B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH650866A5 (en) * | 1979-04-18 | 1985-08-15 | Int Standard Electric Corp | Method for producing a star coupler arrangement for connecting two optical-fibre cables |
| CN2927081Y (en) * | 2006-07-24 | 2007-07-25 | 深圳飞通光电子技术有限公司 | Planar optical waveguide power beam splitter |
| CN107479130A (en) * | 2017-08-28 | 2017-12-15 | 浙江富春江光电科技有限公司 | A kind of fiber waveguide core body wafer and fiber waveguide core body and preparation method thereof |
| CN213210531U (en) * | 2020-10-26 | 2021-05-14 | 常州光芯集成光学有限公司 | PLC optical splitter |
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| CN112462472B (en) | 2023-06-27 |
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