CN102520490A - Large-mode-area single-mode fiber connector and manufacture method - Google Patents
Large-mode-area single-mode fiber connector and manufacture method Download PDFInfo
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- CN102520490A CN102520490A CN2012100115716A CN201210011571A CN102520490A CN 102520490 A CN102520490 A CN 102520490A CN 2012100115716 A CN2012100115716 A CN 2012100115716A CN 201210011571 A CN201210011571 A CN 201210011571A CN 102520490 A CN102520490 A CN 102520490A
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Abstract
The invention discloses a large-mode-area single-mode fiber connector and a manufacture method. The large-mode-area single-mode fiber connector comprises an insertion pin; a connecting and fixing head is arranged at the periphery of the insertion pin; a single-mode fiber is formed in the center hole of the insertion pin; the single-mode fiber is fused with a graded-refractive-index lens, wherein the graded-refractive-index lens is made by carrying out thermal diffusion on a step-type multimode fiber; and a color ring is formed on a rubber tail sleeve of the single-mode fiber. The manufacture method of the large-mode-area single-mode fiber connector comprises the following steps of: carrying out thermal diffusion on the step-type multimode fiber so as to achieve the element doping of a fiber core, and forming the graded-refractive-index lens with a refractive index reducing outwards along the radial direction; fusing the graded-refractive-index lens with the single-mode fiber, cutting the graded-refractive-index lens and fixedly connecting the graded-refractive-index lens into the center hole of the insertion pin, aligning the outer end of the graded-refractive-index lens with the end face of the insertion, grinding and polishing the end face of the insertion pin; and printing the color ring on the rubber tail sleeve, and configuring the connecting and fixing head for the insertion pin. The large-mode-area single-mode fiber connector and the manufacture method have the advantages that: the large-mode-area single-mode fiber connector is simple in structure and easy to manufacture, the end face of the large-mode-area single-mode fiber connector is easily ensured to be clean, the light-passing area is large, and the matching connection with the traditional other fiber movable connectors can be achieved.
Description
Technical field
The present invention relates to a kind of big die face long-pending single-mode optical fiber connector and manufacturing approach, belong to optical fiber technology and technical field of optical fiber communication.
Background technology
In the actual use of optical fiber, often need two sections optical fiber be docked each other, its implementation has two types: welding and employing flexible jumper.Adopt the welding mode to realize that fiber alignment has butt joint and inserts that loss is low, the advantage of good reliability, can be in case together with fused fiber splice, nonvolatil exactly (only if it being blocked) is so its dirigibility is very poor again.Fiber active linker is the components and parts that removably connect between realization optical fiber and the optical fiber, can get up the accurate butt joint of two end faces of optical fiber through it, goes so that the luminous energy of launching fiber output is coupled to receive in the optical fiber to greatest extent.In fiber active linker, optical fiber is fixed in the connector in advance, can plug at any time in the use, and is very convenient.Although compare with the welding mode, fiber active linker can be introduced the additional loss of inserting, and fiber active linker still obtains very using widely in optical fiber communication and other fiber optic applications field.Fiber active linker is the maximum optical passive component of use amount in the fibre system, be widely used in communication, Local Area Network, Fiber to the home (FTTH), in high-quality video transmission, Fibre Optical Sensor and the testing meter and instrument.Along with the continuous development of optical fiber technology, various dissimilar fiber active linkers occur in succession.According to incompletely statistics, the kind of present existing fiber active linker has reached tens kinds, the connector that types such as FC, SC, LC and MT-RJ are arranged wherein commonly used.Adopt these fiber active linkers can realize butt joint, then can introduce very big insertion loss the butt joint of dissimilar optical fiber with a kind of optical fiber.In addition, the clear aperature of existing fiber flexible jumper is fibre core diameter, and for single-mode fiber, its core diameter is generally very little.The core diameter of for example common 1550nm single-mode fiber is about 10 microns.As micronic dust being arranged, then easily clear aperature is blocked, and can't lead to light at the flexible jumper end face.So must guarantee the cleaning of fiber active linker end face, then need use special-purpose instrument to wipe examination if any dust.Have again, when the existing fiber flexible jumper is used to transmit high-power light signal, the phenomenon that its end face is damaged because of the power density of flexible jumper end face is too high occurs through regular meeting.For addressing the above problem, a kind of method is at the bonding gradually changed refractive index of single-mode fiber front end (GRIN) lens, with will be by the beam spread and the collimation of single-mode fiber outgoing.The effect of this method is conspicuous, carries out bondingly again but on making, must gradually changed refractive index lens and optical fiber accurately be aimed at, and is difficult to combine with the manufacture craft of existing fiber active linker.A kind of in addition method is to adopt machining or melt process processes spherical lenticule at the single-mode fiber front end.Though this method has realized the integrated of single-mode fiber and extender lens, the contact of the physics of the fiber end face that can't achieve a butt joint promptly can't be eliminated Fresnel reflection, is difficult to control return loss, therefore also is not used widely.Multimode optical fiber at one section gradually changed refractive index of single-mode fiber front end welding is other a kind of method that realizes making the expansion of single-mode fiber mode field, but because the existence of multimode optical fiber covering is restricted expansion Shu Xiaoguo.So; Still need a kind of can the employing to have the manufacturing approach that technology is made the long-pending single-mode optical fiber connector of big die face now at present, also need a kind of identification method simultaneously and distinguish with single-mode optical fiber connector that big die face is long-pending and common fiber active linker.
Summary of the invention
The object of the present invention is to provide a kind of big die face long-pending single-mode optical fiber connector and manufacturing approach.The single-mode optical fiber connector that this big die face is long-pending, not only end face is prone to guarantee cleaning, and logical light is difficult for being affected by the external environment, and can realize being matchedly connected with existing other fiber active linker, and its manufacturing approach is simple.
The present invention realizes through following technical scheme; The single-mode optical fiber connector that a kind of big die face is long-pending, it comprises contact pin metal or pottery, in the circumferential configuration connection fixed head of contact pin; In the contact pin central stepped by the affixed single-mode fiber of cementing agent; Nested rubber tail cover is characterized in that on the single-mode fiber outside the contact pin, the single-mode fiber welding diameter gradually changed refractive index lens identical with this single-mode fiber cladding diameter in the contact pin; The outer end of gradually changed refractive index lens is concordant with the perpendicular end surface of contact pin or angled end-face, puts at the rubber tail of single-mode optical fiber connector and is shaped on colour circle.
The manufacturing approach of the single-mode optical fiber connector that above-mentioned big die face is long-pending is characterized in that comprising following process:
1) multimode stepped-index optical fiber that diameter is identical with the single-mode fiber cladding diameter carries out the thermal diffusion of fibre core doped chemical under 1100 ℃～1150 ℃ of temperature, forms and radially outward reduces the gradually changed refractive index lens along central axis;
2) use optical fiber splicer that the gradually changed refractive index lens that single-mode fiber and step 1) make are welded together;
3) according to by the light of single-mode fiber outgoing behind the gradually changed refractive index lens; Requirement reach beam diameter the gradually changed refractive index lensed endface reach maximum and identical with the diameter of gradually changed refractive index lens, simultaneously with the condition of its central shaft line parallel, the gradually changed refractive index lens are cut off at the predetermined length place;
4) with single-mode fiber and gradually changed refractive index lens assembly with in the central stepped of adhesive securement in metal or ceramic contact pin; The end face of gradually changed refractive index lens is concordant with the end face of contact pin; And the contact pin end face is carried out grinding and polishing handle; Circumferentially dispose the screw thread fixed head at contact pin, nested rubber tail overprint colour circle on single-mode fiber is processed the long-pending single-mode optical fiber connector of big die face.
The invention has the advantages that compared with prior art the manufacturing approach of single-mode optical fiber connector provided by the invention has following remarkable advantage: 1) light beam can be full of all logical light areas of gradually changed refractive index lens, and it is effective to expand bundle; 2) can realize the butt joint of different types of single-mode fiber, and it is low to insert loss; 3) simple in structure, good reliability can well combine with the manufacturing process of the existing joints of optical fibre, and low cost of manufacture, is fit to produce in batches; 4) can realize the physics contact butt joint of fiber end face, particularly go out under the situation at oblique angle to have the big advantage of return loss at end surface grinding; 5) the outward appearance sign is easy to identification; 6) be fit to apply.
Description of drawings
Accompanying drawing 1 is the structural representation of the joints of optical fibre involved in the present invention.Among Fig. 1,101 is contact pin; 102 is metal nut; 103 are the sign colour circle; 104 is rubber tail cover; 105 is optical cable, and its inside comprises single-mode fiber.
Accompanying drawing 2 is the ceramic contact pin inner structure synoptic diagram in the accompanying drawing 1.Wherein, 201 is ceramic contact pin; 202 is single-mode fiber; 203 is the gap between single-mode fiber and the ceramic contact pin hole, wherein is filled with bonding agent; 204 is the face of weld of single-mode fiber and gradually changed refractive index lens; 205 is the gradually changed refractive index lens.
Accompanying drawing 3 carries out the synoptic diagram of single-mode fiber butt joint for adopting two joints of optical fibre of being made by the inventive method.Wherein, 301,306 is single-mode fiber; 302,305 is face of weld; 303,304 is the gradually changed refractive index lens.Dotted line among the figure is represented the vary in diameter of light beam in the gradually changed refractive index lens.
Embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.Shown in accompanying drawing 2, single-mode fiber 202 adopts standard single mode telecommunication optical fiber (G652), and its core diameter is 8.2 μ m, and cladding diameter is 125 μ m, numerical aperture 0.14.At first its protective finish is removed, used the optical fiber cutting knife that its end face is cut into and its axis normal then.Gradually changed refractive index lens 205 use Nufern MM-S105/125-15A refractive index multimode stepped-index optical fiber to make through pyroprocessing.The core diameter of MM-S105/125-15A is 105 μ m, and cladding diameter is 125 μ m, numerical aperture 0.14.At first its protective finish is removed, placed the high-temperature tubular heating furnace, heating is 30 minutes under 1100 ℃ of temperature.Under the condition of high temperature, in the fibre core of MM-S105/125-15A Ge element will be by the fiber optic hub line along radial direction to external diffusion, form refractive index and radially outwards reduce the gradually changed refractive index lens by central axis.
Use the optical fiber cutting knife that gradually changed refractive index lens 205 end faces are cut into and its axis normal.Afterwards, the single-mode fiber 202 after the end face processing being put into optical fiber splicer with gradually changed refractive index lens 205 is in the same place two fused fiber splices.On gradually changed refractive index lens 205, locate to use the optical fiber cutting knife that it is cut off for (204) 400 microns, form a minute surface with its axis normal at its end face apart from face of weld.Ceramic contact pin 201 adopts the conventional zirconium oxide ceramic contact pin of 2.500mm, and its center pit internal diameter is 126 microns.In the center pit of ceramic contact pin 201, inject the ND353 epoxy glue with syringe, more above-mentioned single-mode fiber 202 and gradually changed refractive index lens 205 are inserted in the center pit of ceramic contact pin 201, the end face of gradually changed refractive index lens 205 is concordant with the end face of ceramic contact pin 201.Use uviol lamp to be cured processing, then in the gap 203 of single-mode fiber 202 and gradually changed refractive index lens 205 and ceramic contact pin 201, form adhesive linkage.
Use commercially available standard FC type fiber optic connector assembly in the present embodiment, its various indexs meet the index of the FC type joints of optical fibre of " the communication industry standard YD/T 1272.4-2007 of the People's Republic of China (PRC) " regulation.
The ceramic contact pin and the FC type fiber optic connector assembly that will contain single-mode fiber 202 and gradually changed refractive index lens 205 are assembled into the FC type joints of optical fibre.Using optic fiber polishing machine to carry out grinding and polishing handles; End face is vertical with the central axis of ceramic contact pin 201, then obtains and the corresponding joints of optical fibre of standard FC/PC.Identification method according to the long-pending single-mode optical fiber connector of big die face provided by the invention is designated as FC/PC/L with it, or FC/PC-L; If with 8 ° of angles of ceramic contact pin end surface grinding, then obtain and the corresponding joints of optical fibre of standard FC/APC.Identification method according to the long-pending single-mode optical fiber connector of big die face provided by the invention is designated as FC/APC/L with it, or FC/APC-L.
For the FC/PC type joints of optical fibre, use black rubber tail cover traditionally; And, use green rubber tail cover traditionally for the FC/APC type joints of optical fibre.According to the identification method of the long-pending single-mode optical fiber connector of big die face provided by the invention, on black or green rubber tail cover 104, add a red colour circle 103, with the difference of expression with the common FC/PC or the FC/APC type joints of optical fibre.Adopt above-mentioned identification method, color contrast is distinct, and the user can distinguish the long-pending single-mode optical fiber connector of the big die face that the present invention relates to and the standard FC type joints of optical fibre at an easy rate.
For other existing type fiber connector, can adopt the similar approach that provides with present embodiment to use the manufacturing and the identification method of the long-pending single-mode optical fiber connector of big die face provided by the invention.
Those skilled in the art are clear, and thought of the present invention can adopt the alternate manner beyond the above-named embodiment to realize.
Claims (2)
1. the long-pending single-mode optical fiber connector of a big die face; It comprises contact pin metal or pottery, connects fixed head in the circumferential configuration of contact pin, in the contact pin central stepped by the affixed single-mode fiber of cementing agent; Nested rubber tail cover on the single-mode fiber outside the contact pin; It is characterized in that, the single-mode fiber welding diameter multimode stepped-index optical fiber identical in the contact pin with this single-mode fiber cladding diameter, this multimode stepped-index optical fiber is and outwards reduces the gradually changed refractive index lens; The outer end that outwards reduces the gradually changed refractive index lens is concordant with the perpendicular end surface or the angled end-face of contact pin, puts at the rubber tail of single-mode fiber and is shaped on colour circle.
2. manufacturing approach by the long-pending single-mode optical fiber connector of the described big die face of claim 1 is characterized in that comprising following process:
1) multimode stepped-index optical fiber that diameter is identical with the single-mode fiber cladding diameter carries out the thermal diffusion of fibre core doped chemical under 1100 ℃～1150 ℃ of temperature, forms and radially outward reduces the gradually changed refractive index lens along central axis;
2) use optical fiber splicer that the gradually changed refractive index lens that single-mode fiber and step 1) make are welded together;
3) according to by the light of single-mode fiber outgoing after outwards reducing the gradually changed refractive index lens; Requirement reach beam diameter the gradually changed refractive index lensed endface reach maximum and identical with the diameter of gradually changed refractive index lens, simultaneously with the condition of its central shaft line parallel, the gradually changed refractive index lens are cut off at the predetermined length place;
4) with single-mode fiber and gradually changed refractive index lens assembly with in the central stepped of adhesive securement in metal or ceramic contact pin; The end face of gradually changed refractive index lens is concordant with the end face of contact pin; And the contact pin end face is carried out grinding and polishing handle; Circumferentially dispose the screw thread fixed head at contact pin, nested rubber tail overprint colour circle on single-mode fiber is processed the long-pending single-mode optical fiber connector of big die face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100115716A CN102520490A (en) | 2012-01-16 | 2012-01-16 | Large-mode-area single-mode fiber connector and manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100115716A CN102520490A (en) | 2012-01-16 | 2012-01-16 | Large-mode-area single-mode fiber connector and manufacture method |
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| CN102520490A true CN102520490A (en) | 2012-06-27 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246011A (en) * | 2013-05-17 | 2013-08-14 | 珠海瑞光科技有限公司 | Beam expanding fiber and manufacturing method thereof |
| CN103454730A (en) * | 2013-09-26 | 2013-12-18 | 深圳朗光科技有限公司 | Optical fiber collimator |
| CN104297859A (en) * | 2013-12-05 | 2015-01-21 | 中航光电科技股份有限公司 | Single-mode fiber contact and manufacture method thereof |
| CN104297860A (en) * | 2013-12-05 | 2015-01-21 | 中航光电科技股份有限公司 | Single-mode fiber connector |
| CN109425934A (en) * | 2017-09-01 | 2019-03-05 | 中航光电科技股份有限公司 | Ray machine coaxial collimator and optical fiber connector |
| CN110707514A (en) * | 2019-09-18 | 2020-01-17 | 珠海市杰威光电科技有限公司 | Module capable of replacing beam expanding optical fiber and preparation method thereof |
| CN111624703A (en) * | 2020-05-10 | 2020-09-04 | 桂林电子科技大学 | Fiber integrated Fourier transform micro optical system |
| CN111650690A (en) * | 2020-05-10 | 2020-09-11 | 桂林电子科技大学 | Micro-collimator based on double-clad optical fiber |
| CN114911009A (en) * | 2022-04-28 | 2022-08-16 | 上海拜安传感技术有限公司 | Optical fiber filter |
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| US6265018B1 (en) * | 1999-08-31 | 2001-07-24 | Lucent Technologies Inc. | Fabricating graded index plastic optical fibers |
| CN1361439A (en) * | 2000-12-25 | 2002-07-31 | 日本板硝子株式会社 | Optical fibre with lens function and its producing method |
| JP2004077658A (en) * | 2002-08-13 | 2004-03-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical connector |
| CN101852900A (en) * | 2010-06-29 | 2010-10-06 | 上海大学 | Collimation-type optical fiber connector |
| CN201984186U (en) * | 2011-04-02 | 2011-09-21 | 上海建宝光纤技术有限公司 | FC (Family Computer)-type covered-wire optical-fiber connector |
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- 2012-01-16 CN CN2012100115716A patent/CN102520490A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6265018B1 (en) * | 1999-08-31 | 2001-07-24 | Lucent Technologies Inc. | Fabricating graded index plastic optical fibers |
| CN1361439A (en) * | 2000-12-25 | 2002-07-31 | 日本板硝子株式会社 | Optical fibre with lens function and its producing method |
| JP2004077658A (en) * | 2002-08-13 | 2004-03-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical connector |
| CN101852900A (en) * | 2010-06-29 | 2010-10-06 | 上海大学 | Collimation-type optical fiber connector |
| CN201984186U (en) * | 2011-04-02 | 2011-09-21 | 上海建宝光纤技术有限公司 | FC (Family Computer)-type covered-wire optical-fiber connector |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246011A (en) * | 2013-05-17 | 2013-08-14 | 珠海瑞光科技有限公司 | Beam expanding fiber and manufacturing method thereof |
| CN103246011B (en) * | 2013-05-17 | 2015-04-29 | 光库通讯(珠海)有限公司 | Beam expanding fiber and manufacturing method thereof |
| CN103454730A (en) * | 2013-09-26 | 2013-12-18 | 深圳朗光科技有限公司 | Optical fiber collimator |
| CN104297859A (en) * | 2013-12-05 | 2015-01-21 | 中航光电科技股份有限公司 | Single-mode fiber contact and manufacture method thereof |
| CN104297860A (en) * | 2013-12-05 | 2015-01-21 | 中航光电科技股份有限公司 | Single-mode fiber connector |
| CN109425934A (en) * | 2017-09-01 | 2019-03-05 | 中航光电科技股份有限公司 | Ray machine coaxial collimator and optical fiber connector |
| CN110707514A (en) * | 2019-09-18 | 2020-01-17 | 珠海市杰威光电科技有限公司 | Module capable of replacing beam expanding optical fiber and preparation method thereof |
| CN111624703A (en) * | 2020-05-10 | 2020-09-04 | 桂林电子科技大学 | Fiber integrated Fourier transform micro optical system |
| CN111650690A (en) * | 2020-05-10 | 2020-09-11 | 桂林电子科技大学 | Micro-collimator based on double-clad optical fiber |
| CN111624703B (en) * | 2020-05-10 | 2022-05-31 | 桂林电子科技大学 | Fiber integrated Fourier transform micro optical system |
| CN114911009A (en) * | 2022-04-28 | 2022-08-16 | 上海拜安传感技术有限公司 | Optical fiber filter |
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Application publication date: 20120627 |