CN103513337A - Dual-core optical fiber branching device and manufacturing method thereof - Google Patents
Dual-core optical fiber branching device and manufacturing method thereof Download PDFInfo
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- CN103513337A CN103513337A CN201210217056.3A CN201210217056A CN103513337A CN 103513337 A CN103513337 A CN 103513337A CN 201210217056 A CN201210217056 A CN 201210217056A CN 103513337 A CN103513337 A CN 103513337A
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Abstract
The invention discloses a device for separating two optical signals in a dual-core optical fiber and respectively conducting the two optical signals to two standard single-mode optical fibers, and a manufacturing method thereof. The main technical characteristics are that the device is composed of the dual-core optical fiber 1, the two standard single-mode optical fibers 2 with polished side surfaces, a quartz capillary 3, splicing regions 4 which are aligned with each other and welded, a quartz groove 5 and a packaging housing 6. The manufacturing method of the device is that: in the dual-core optical fiber branching device, the side surfaces of the two standard single-mode optical fibers are polished and then spliced; the outsides of the two standard single-mode optical fibers are sleeved with the quartz capillary; and the spliced portions of the two standard single-mode optical fibers are melted into a small section of dual-core optical fiber after being subjected to melting, shrinking and adjustment through heating, wherein the distance between the two cores is the same as the distance between the two cores of the dual-core optical fiber needing to be connected. The optical fiber which is obtained through splicing and the dual-core optical fiber 1 are aligned with each other, adjusted and welded together. Due to different diameters of two ends after welding, in order to improve the mechanical connection strength, the device is placed into the quartz groove for packing protection, so that the optical signal branching device for separating the two optical signals in the dual-core optical fiber and respectively conducting the two optical signals to the standard single-core optical fibers is fabricated. The dual-core optical fiber branching device has the advantage of simple structure, and can be used to achieve the purpose that users can separate the two optical signals in the dual-core optical fiber conveniently.
Description
(1) technical field
The present invention relates to a kind of twin-core fiber shunt, for the two ways of optical signals of twin-core fiber is separated and is transmitted to respectively in two standard single-mode fibers.Belong to optical fiber technology field.
(2) background technology
Typical optical fiber is single cored structure, by surrounding layer, around fibre core, forms an optical waveguide.And multi-core fiber is to contain many fibre cores at same surrounding layer.Therefore, each core is equivalent to a light (fibre) waveguide, i.e. integrated many single-core fibers in a multi-core fiber.Twin-core fiber is a kind of in multi-core fiber.
Early stage in optical communication, in order to improve optical communication transmission channel density, the concept that proposes multi-core fiber in 1978, object is manufacturing cost and this two hang-up of the highly dense intensity high fiber count cable of exploitation that reduces optical fiber cable in order to solve simultaneously.It is that multi-core fiber interconnects and continues very difficult that multi-core fiber technology runs into main problems and difficulties in optical communication actual application.Yet multi-core fiber technology but all shows its outstanding glamour in space division multiplexing technical field and the sensing measurement technical field of optical communication.For example: optical fiber filter, photoswitch, light wavelength division multiplexing, optical add/drop multiplexer; Utilize multi-core fiber to carry out energy pumping, can manufacture more powerful fiber laser, rare earth element is mixed in multi-core fiber, can improve the gain balance characteristic of fiber amplifier; Utilize multi-core fiber to form fibre optic interferometer, can also measure different kinds of parameters such as strain and bendings.Application number is 2006101510033.1 invention technical patent: single-core fiber and multicore optical fiber coupler and appearance thereof connect draws taper coupling method, adopt single-mode fiber and multi-core fiber welds and in the way of solder joint place enforcement fused biconical taper, realized and at an inside of optical fibre, the light in monochromatic light road has been assigned to the object in each fibre core in multi-core fiber.And also need be in actual applications separated from each other and be transferred to respectively separately independently in single-mode fiber being integrated in a multi-core fiber in optical fiber, this device has the using value of particular importance for multi-core fiber space division multiplexing optical communication technique.2007, the Yi Ge research group of Britain adopts the method for induced with laser on waveguide plate, first to write out the waveguide of three dimensions solid, realized four-core fiber separated by space waveguide transition, in four methods that single-mode fiber is aimed at one by one with in one line, provided a kind of method (R.R.Thomson, H.T.Bookey of multi-core fiber shunt of waveguide transition, N.D.Psaila, A.Fender, S.Campbell, W.N.MacPherson, J.S.Barton, D.T.Reid, and A.K.Kar, Opt., Express, 15 (18), 11691,2007).But this device size is larger, in addition, this device has larger insertion loss.
For overcome twin-core fiber in use with separately independently single-mode fiber along separate routes and the difficulty being connected, object of the present invention is exactly to be connected difficult point for twin-core fiber with standard single-mode fiber, and a kind of twin-core fiber shunt of making simple and convenient is provided.
(3) summary of the invention
The object of the present invention is to provide a kind of can be by the two ways of optical signals in twin-core fiber separately and be transmitted to respectively two devices in standard single-mode fiber.
The object of the present invention is achieved like this:
Amalgamation is carried out in two standard single-mode fiber sides after rubbing down, overcoat quartz capillary, through heating, carry out after the adjustment of melting pulling-down, two standard single-mode fiber amalgamation partial fusion become a bit of twin-core fiber, two fibre cores between spacing identical with two fiber core distances of the twin-core fiber need connecting.So both are aimed at and adjust and weld.Because the diameter at the rear two ends of welding is different, in order to improve mechanical connection intensity, be placed in quartz cell and implement to solidify protection, thereby be made into the light signal shunt device of the two ways of optical signals in twin-core fiber being separated and is transmitted to respectively standard single-core fiber.This twin-core fiber shunt is simple in structure, facilitates user to reach the two ways of optical signals in twin-core fiber is carried out to separated object.
The invention discloses a kind of device and structure thereof of two ways of optical signals in twin-core fiber being separated and is transmitted to respectively two standard single-mode fibers.Its technical characteristics is, this device by twin-core fiber 1, side through two standard single-mode fibers 2 of rubbing down, quartz capillary 3, mutually aim at and welding area 4, quartz cell 5 and the encapsulating housing 6 of implementing welding forms.
Twin-core fiber shunt of the present invention, also has some following technical characterictics:
(1) wherein amalgamation is carried out in two standard single-mode fiber sides after rubbing down, overcoat quartz capillary, through heating, carry out after melting adjustment, the spacing between two fibre cores of a bit of twin-core fiber of two optical fiber fusions is identical with two fiber core distances of the twin-core fiber that needs to connect;
(2) twin-core fiber and two standard single-mode fiber sides throw amalgamation part on time, mainly that two of four fibre cores are aimed at simultaneously, the method of aiming at is by light being assigned to uniformly in two fibre cores of twin-core fiber, by accessing respectively two light power meters for two single-mode fiber ends along separate routes, monitor simultaneously, then regulate aligning, the sizableness of the luminous power receiving when two power meters and approaching with input rate time, welds;
(3), because the diameter at two ends after welding is different, in order to improve mechanical connection intensity, be placed in quartz cell and implement packaging protection by the method that is mixed with the photosensitive adhesive curing of ultraviolet of silica flour;
(4) in order to make this device easy to use, and sturdy and durable, the twin-core fiber shunt after quartz cell is implemented packaging protection also wants additional stainless steel tubulose encapsulating housing to carry out outer enclosure.
(4) accompanying drawing explanation
Fig. 1 is the structural representation of twin-core fiber shunt; Wherein 1 is twin-core fiber, the 2nd, the fusion weld place between a bit of twin-core fiber after twin-core fiber and two standard single-mode fiber amalgamations, 3 is a bit of twin-core fibers after two standard single-mode fiber amalgamations, the 4th, two standard single-mode fibers after the rubbing down of side, the 5th, quartz cell, the 6th, stainless-steel tube encapsulating housing.
Fig. 2 is that two standard single-mode fibers carry out the schematic diagram of amalgamation after the rubbing down of side, and wherein the rubbing down degree of depth of two standard single-mode fibers depends on the spacing between two fibre cores of twin-core fiber.Wherein 1 is twin-core fiber, the 4th, and two standard single-mode fibers that carry out amalgamation after the rubbing down of side.
Fig. 3 is the schematic diagram that two standard single-mode fibers adopt one section of quartzy capillary sleeve pipe to carry out amalgamation after the rubbing down of side, and wherein 4 is two standard single-mode fibers that carry out amalgamation after the rubbing down of side, and 7 is one section of quartzy capillary sleeve pipe.
Fig. 4 is that two standard single-mode fibers adopt one section of quartzy capillary sleeve pipe to carry out forming after melting heating the schematic diagram of a bit of twin-core fiber after the rubbing down of side, wherein 3 to be the thin sleeve pipes of this bit of quartz wool melt and shorten a bit of twin-core fiber being integrated into two standard single-mode fibers after the rubbing down of side, and the 4th, two standard single-mode fibers that carry out amalgamation after the rubbing down of side.
Fig. 5 protects curing structural representation by inserting quartz cell after a bit of twin-core fiber aligning welding after twin-core fiber and two standard single-mode fiber amalgamations.Wherein 1 is twin-core fiber, the 2nd, the fusion weld place between a bit of twin-core fiber after twin-core fiber and two standard single-mode fiber amalgamations, 3 is a bit of twin-core fibers after two standard single-mode fiber amalgamations, the 4th, and two standard single-mode fibers after the rubbing down of side, the 5th, quartz cell.
(5) embodiment
Below in conjunction with accompanying drawing, the present invention is described in more detail, in conjunction with Fig. 2-Fig. 5, embodiments of the present invention are:
Step (one): first two standard single-mode fibers 4 are carried out to side rubbing down, the rubbing down degree of depth depends on the distance between two fibre cores of twin-core fiber 1, as shown in Figure 2.
Step (two): one section of quartz capillary 7 is enclosed within after rubbing down and amalgamation two standard single-mode fibers 4 together on, as shown in Figure 3.
Step (three): the amalgamation optical fiber of this bit of cover hairiness fine quartz pipe is heated and melts contracting, thereby two amalgamation optical fiber and quartz capillary are become one.To melt this bit of twin-core fiber of contracting all-in-one-piece cut standby, as shown in Figure 4.
Step (four): melting that twin-core fiber 1 is completed with step 3 is condensed to this segment twin-core fiber of one and aims at, weld, and inserted in quartz cell, is cured with the ultraviolet sensitivity glue that is mixed with silica flour, as shown in Figure 5.
Step (five): last; adopt one section of stainless steel sleeve pipe; the twin-core fiber splitter assemblies through ultraviolet light polymerization shown in Fig. 5 is inserted in stainless steel protection sleeve pipe and carries out overall package, as shown in Figure 1, just completed the making of twin-core fiber shunt of the present invention.
Claims (4)
1. one kind by the two ways of optical signals in twin-core fiber separately and be transmitted to respectively the device of standard single-core fiber.Its technical characteristics is, this device by twin-core fiber 1, side through two standard single-mode fibers 2 of rubbing down, quartz capillary 3, mutually aim at and welding area 4, quartz cell 5 and the encapsulating housing 6 of implementing welding forms.
2. the method for making of a twin-core fiber shunt.Its technical characteristics is, in described twin-core fiber shunt, amalgamation is carried out in two standard single-mode fiber sides after rubbing down, overcoat quartz capillary, through heating, carry out after the adjustment of melting pulling-down, two standard single-mode fiber amalgamation partial fusion become a bit of twin-core fiber, two fibre cores between spacing identical with two fiber core distances of the twin-core fiber need connecting.So both are aimed at and adjust and weld.Because the diameter at two ends after welding is different; in order to improve mechanical connection intensity; be placed in quartz cell and implement packaging protection by the method that is mixed with the photosensitive adhesive curing of ultraviolet of silica flour, thereby be made into the light signal shunt device of the two ways of optical signals in twin-core fiber being separated and is transmitted to respectively standard single-core fiber.
3. twin-core fiber shunt according to claim 2, it is characterized in that: twin-core fiber and two standard single-mode fiber sides throw amalgamation part on time, mainly that two of four fibre cores are aimed at simultaneously, the method of aiming at is by light being assigned to uniformly in two fibre cores of twin-core fiber, by accessing respectively two light power meters for two single-mode fiber ends along separate routes, monitor simultaneously, then regulate aligning, the sizableness of the luminous power receiving when two power meters and approaching with input rate time, welds.
4. twin-core fiber shunt according to claim 2; it is characterized in that: in order to make this device easy to use; and sturdy and durable, the twin-core fiber shunt of implementing to solidify after protection through quartz cell also wants additional stainless steel tubulose encapsulating housing to carry out outer enclosure.
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| CN201210217056.3A CN103513337A (en) | 2012-06-28 | 2012-06-28 | Dual-core optical fiber branching device and manufacturing method thereof |
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| CN201210217056.3A CN103513337A (en) | 2012-06-28 | 2012-06-28 | Dual-core optical fiber branching device and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536092A (en) * | 2014-12-15 | 2015-04-22 | 哈尔滨工程大学 | Monolithic integration type multi-core optical fiber branching device and preparing method thereof |
| CN104880771A (en) * | 2015-05-05 | 2015-09-02 | 深圳大学 | Multi-core fiber demultiplexer and manufacturing method thereof |
| CN109106465A (en) * | 2018-09-25 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of double optical fiber structures and preparation method thereof |
| CN109917515A (en) * | 2019-03-28 | 2019-06-21 | 山东凯普乐光电科技有限公司 | A kind of coupling optical fiber packaging method |
| CN110556704A (en) * | 2018-05-31 | 2019-12-10 | 深圳联品激光技术有限公司 | Optical fiber output terminal and laser |
| CN113777717A (en) * | 2021-08-31 | 2021-12-10 | 武汉楚星光纤应用技术有限公司 | Multi-core optical fiber fan-in and fan-out module and manufacturing method thereof |
| CN113805280A (en) * | 2021-10-05 | 2021-12-17 | 桂林电子科技大学 | Stable and easy coaxial double wave light guide fiber lateral coupler of preparation |
| WO2023176798A1 (en) * | 2022-03-17 | 2023-09-21 | 住友電気工業株式会社 | Multicore optical fiber, optical combiner, and fiber properties measurement method |
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| JPS5929218A (en) * | 1982-08-12 | 1984-02-16 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical coupler |
| JPS59198419A (en) * | 1983-04-26 | 1984-11-10 | Nippon Telegr & Teleph Corp <Ntt> | Production of fiber-shaped directional coupler |
| JP2005010372A (en) * | 2003-06-18 | 2005-01-13 | Fujikura Ltd | Manufacturing method of two-core fiber collimator, manufacturing apparatus of two-core fiber collimator, two-core fiber collimator, optical multiplexer/demultiplexer |
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Patent Citations (3)
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| JPS5929218A (en) * | 1982-08-12 | 1984-02-16 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical coupler |
| JPS59198419A (en) * | 1983-04-26 | 1984-11-10 | Nippon Telegr & Teleph Corp <Ntt> | Production of fiber-shaped directional coupler |
| JP2005010372A (en) * | 2003-06-18 | 2005-01-13 | Fujikura Ltd | Manufacturing method of two-core fiber collimator, manufacturing apparatus of two-core fiber collimator, two-core fiber collimator, optical multiplexer/demultiplexer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536092A (en) * | 2014-12-15 | 2015-04-22 | 哈尔滨工程大学 | Monolithic integration type multi-core optical fiber branching device and preparing method thereof |
| CN104536092B (en) * | 2014-12-15 | 2019-04-19 | 哈尔滨工程大学 | A kind of single-chip integration formula multi-core optical fiber splitter and preparation method thereof |
| CN104880771A (en) * | 2015-05-05 | 2015-09-02 | 深圳大学 | Multi-core fiber demultiplexer and manufacturing method thereof |
| CN104880771B (en) * | 2015-05-05 | 2018-01-05 | 深圳大学 | A kind of multi-core fiber shunt and preparation method thereof |
| CN110556704A (en) * | 2018-05-31 | 2019-12-10 | 深圳联品激光技术有限公司 | Optical fiber output terminal and laser |
| CN109106465A (en) * | 2018-09-25 | 2019-01-01 | 中国科学院深圳先进技术研究院 | A kind of double optical fiber structures and preparation method thereof |
| CN109917515A (en) * | 2019-03-28 | 2019-06-21 | 山东凯普乐光电科技有限公司 | A kind of coupling optical fiber packaging method |
| CN113777717A (en) * | 2021-08-31 | 2021-12-10 | 武汉楚星光纤应用技术有限公司 | Multi-core optical fiber fan-in and fan-out module and manufacturing method thereof |
| CN113805280A (en) * | 2021-10-05 | 2021-12-17 | 桂林电子科技大学 | Stable and easy coaxial double wave light guide fiber lateral coupler of preparation |
| WO2023176798A1 (en) * | 2022-03-17 | 2023-09-21 | 住友電気工業株式会社 | Multicore optical fiber, optical combiner, and fiber properties measurement method |
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Application publication date: 20140115 |