CN103869417B - The single-mode fiber speculum of a kind of high reliability and its preparation method - Google Patents
The single-mode fiber speculum of a kind of high reliability and its preparation method Download PDFInfo
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- CN103869417B CN103869417B CN201410073579.4A CN201410073579A CN103869417B CN 103869417 B CN103869417 B CN 103869417B CN 201410073579 A CN201410073579 A CN 201410073579A CN 103869417 B CN103869417 B CN 103869417B
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Abstract
The present invention discloses single-mode fiber speculum and its preparation method of a kind of high reliability, and the single-mode fiber speculum of a kind of high reliability comprises optical fiber, ceramic insertion core, epoxy glue caking agent, tail optical fiber Stress match caking agent, reflectance coating, shell, encapsulation caking agent, tail optical fiber protection silicon rubber. Its preparation method, optical fiber is carried out ceramic packing by (1), with epoxy glue caking agent by bonding fiber on ceramic insertion core; (2) the assembly ceramic insertion core after step (1) being processed is led outside fine groove epoxy glue glue circle, applies the caking agent of one layer of hardness between epoxy glue and optical fiber coating hardness, coupling stress; (3) the assembly fiber end face grinding and polishing after step (2) being processed, it is achieved desirable fiber reflection end face; (4) stack face after step (3) being processed directly steams plating high-reflecting film, completes mirror assembly; (5) mirror assembly after step (4) being processed adopts single sealing shell to encapsulate, and mends glue at speculum root.
Description
Technical field
The present invention relates to the single-mode fiber speculum of a kind of high reliability and its preparation method, belong to glue-free light path or passive light electronic device structure, reliability design and preparation method in optical-fibre communications and sensory field of optic fibre.
Background technology
Fiber reflector is one of substantially passive device in opticfiber communication and sensory field of optic fibre, and its function is the reflection realizing light in light path. At present, the fiber reflector of application in opticfiber communication and sensory field of optic fibre, employing be that fiber end face pastes reflecting optics to realize the internal reflection of light in light path. This structure exists in light path filling glue or light path and there is air gap band, and the hidden danger of reflecting optics displacement, thus affects device optical performance index and reliability.
In addition, before pasting reflecting optics, when optical fiber adopts ceramic insertion core to be adhesively fixed, what usually adopt is epoxy resin glue, this adhesive curing stress is big, in follow-up processing, circulation, application, very easily causes that epoxy resin glue and optical fiber coating are gluing connects interface generation coat crackle, thus reduce fiber reflector tail optical fiber bend resistance performance, serious will cause component failure.
Summary of the invention
The technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, there is provided a kind of and solve fiber reflector root coat crackle, avoid pasting eyeglass displacement hidden danger, realize the high reliability fiber reflector of the glue-free reflection of light path, the fiber reflector preparation method of a kind of high reliability is provided simultaneously.
The technical solution of the present invention is: the single-mode fiber speculum of a kind of high reliability, comprises fiber reflection mirror assembly and reflectance coating protection parts. Fiber reflection mirror assembly comprises optical fiber, ceramic insertion core, epoxy glue caking agent, tail optical fiber Stress match caking agent, reflectance coating, optical fiber is bonded on ceramic insertion core by epoxy glue caking agent, tail optical fiber Stress match caking agent is coated on the epoxy glue caking agent outside surface leading fine groove side of ceramic insertion core, reflectance coating directly steam be plated on optical fiber, on grinding and polishing end face that ceramic insertion core, epoxy glue caking agent form jointly. Reflectance coating protection parts; comprise shell, encapsulation caking agent, tail optical fiber protection silicon rubber; encapsulation caking agent is filled between hollow inner wall of tube shell and the outer wall of ceramic insertion core; with the relative position of fixing shell and fiber reflection mirror assembly; tail optical fiber protection Silicone Rubber Coated at the root of optical fiber, with the section covering tail optical fiber Stress match caking agent, shell, encapsulation caking agent form jointly.
A preparation method for the single-mode fiber speculum of high reliability, comprises the following steps:
(1) with epoxy glue caking agent by bonding fiber on ceramic insertion core, so that optical fiber is carried out ceramic packing, form the assembly after ceramic packing;
(2) the epoxy glue caking agent outside surface of assembly after step (1) ceramic packing, applies one layer of tail optical fiber Stress match caking agent, to mate the stress at the boundary place of the coat of epoxy glue caking agent and optical fiber.
(3) end face that the optical fiber of assembly after step (2) being processed, ceramic insertion core and epoxy glue caking agent form jointly carries out grinding and polishing, to improve the smooth finish of fiber end face, reduce fiber end face diffuse-reflectance, it is achieved desirable fiber reflection end face, it is to increase fiber end face reflectivity.
(4), after the grinding and polishing end face that the optical fiber of assembly after step (3) processes, ceramic insertion core, epoxy glue caking agent form jointly directly steams plating reflectance coating, fiber reflection mirror assembly is jointly formed by optical fiber, ceramic insertion core, epoxy glue caking agent, tail optical fiber Stress match caking agent, reflectance coating.
(5) encapsulation caking agent is filled in step (4) between the outer wall of the ceramic insertion core of the fiber reflection mirror assembly formed and hollow inner wall of tube shell, with the relative position of fixing shell and fiber reflection mirror assembly, to realize level Hermetic Package.
(6) root of optical fiber of fiber reflector after step (5) processes applies one layer of tail optical fiber protection silicon rubber, with the end face covering tail optical fiber Stress match caking agent, shell, encapsulation caking agent form jointly.
In described step (1), it is necessary to epoxy glue caking agent loading level is controlled, it is achieved the protrusion height scope at the epoxy glue caking agent leading fine groove side of ceramic insertion core is 0.1mm��0.6mm.
In described step (2), tail optical fiber Stress match caking agent is the ultra-violet curing glue of a kind of hardness between epoxy glue caking agent and the coat hardness of optical fiber, the stress at coupling epoxy glue and optical fiber coating boundary place. The object of Stress match design avoids fatigue damage in following process process to cause epoxy glue glue interface optical fiber coating to produce crackle.
In described step (3), the end face that optical fiber, ceramic insertion core, epoxy glue caking agent form jointly is carried out grinding and polishing, grinding and polishing flow process comprises that grinding is removed photoresist, roughly ground, fine grinding, fine grinding and polishing five operations, all adopt ultrasonic cleaning and scouring between every procedure.
Described step (4) is directly steamed on grinding and polishing end face plating reflectance coating and adopts double-ion beam householder method.
In described step (5), shell is the Can of one end sealing, and encapsulation caking agent is the mixture of silica powder and epoxy glue, to increase the viscosity of encapsulation caking agent.
In described step (6), tail optical fiber protection silicon rubber selects that hardness is little, the silicon rubber of high-temp resisting high-humidity resisting.
After level Hermetic Package, reflectance coating both can be protected directly to contact with humidity and aggressive atmosphere environment from irradiation impact of colliding with, shield, isolated reflectance coating, it is to increase the job stability under speculum Flouride-resistani acid phesphatase and severe environment; Speculum bend resistance performance can be improved again.
The advantage of the present invention compared with currently available products in domestic and international communication industry:
(1) structurally there are two advantages:
First: in fiber reflector unit construction, employing Stress match designs, namely the epoxy glue adhesive surface leading fine groove side at ceramic insertion core is coated with the ultra-violet curing glue of one layer of hardness between epoxy glue caking agent and optical fiber coating hardness, have matched stress between the two, avoid optical fiber coating and epoxy glue caking agent interface generation coat crackle.
2nd: fiber end face directly steams and plated reflectance coating, realize the internal reflection of light, avoid the hidden danger pasting eyeglass displacement in existing speculum technology of preparing, avoid the hidden danger existing in light path and filling with glue or airstrip, make the mirror assembly structure more simple, it is to increase fiber reflector structural reliability.
(2) in technology of preparing, there are two advantages:
First: have employed fiber end face direct plating membrane process flow process so that single-mode fiber speculum preparation method is more simple.
2nd: coating process have employed double-ion beam auxiliary process, it is to increase the adhesivity of film.
Accompanying drawing explanation
Fig. 1 is single-mode fiber speculum preparation technology's schematic flow sheet of a kind of high reliability of the present invention;
Fig. 2 is single-mode fiber mirror assembly blank 1 schematic diagram of a kind of high reliability of the present invention;
Fig. 3 is single-mode fiber mirror assembly blank 2 schematic diagram of a kind of high reliability of the present invention;
Fig. 4 is the single-mode fiber mirror assembly schematic diagram of a kind of high reliability of the present invention;
Fig. 5 is the single-mode fiber speculum schematic diagram of a kind of high reliability of the present invention.
Embodiment
The basic ideas of the present invention: by the analysis to single-mode fiber mirror structure and preparation flow, after ceramic packing, it is proposed that tail optical fiber Stress match designs; For reflectance coating design, have employed fiber end face and directly steam plating high-reflecting film process program, and in technological process, have employed double-ion beam assisted deposition technique; In film protection and in package reliability, devise and singly seal encapsulating package, have employed half sunk packaged type.
As shown in Figure 5, the single-mode fiber speculum of a kind of high reliability of the present invention, comprises fiber reflection mirror assembly and reflectance coating protection parts. fiber reflection mirror assembly is functional component, realize the internal reflection of light, by optical fiber 1, ceramic insertion core 2, epoxy glue caking agent 3, tail optical fiber Stress match caking agent 4, reflectance coating 5 is formed, optical fiber 1 is bonded on ceramic insertion core 2 by epoxy glue caking agent 3, tail optical fiber Stress match caking agent 4 is coated on outside the epoxy glue caking agent leading fine groove side of ceramic insertion core 2, reflectance coating 5 directly steams and is plated on optical fiber 1, ceramic insertion core 2, on the grinding and polishing end face that epoxy glue caking agent 3 forms jointly, when input light through Optical Fiber Transmission to fiber end face time, on medium high-reflecting film, alternate via multilayer height low-refractionThe highly reflecting films of film composition, the reflectivity of highly reflecting films can reach 99.5%-99.8%, it is achieved the reflection of light, ��0For the operation wavelength of speculum. Reflectance coating protection parts, are made up of shell 6, encapsulation caking agent 7, tail optical fiber protection silicon rubber 8, and fiber reflection mirror assembly is fixed in shell 6 by encapsulation caking agent 7 encapsulation, and tail optical fiber protection silicon rubber 8 is coated in the root of optical fiber. Level Hermetic Package, both can protect reflectance coating directly to contact with humidity and aggressive atmosphere environment from irradiation impact of colliding with, shield, isolated reflectance coating, it is to increase the job stability under speculum Flouride-resistani acid phesphatase and severe environment; Speculum bend resistance performance can be improved again.
As shown in Figure 1, preparation technology's flow process of the single-mode fiber speculum of a kind of high reliability of the present invention, specifically comprises the steps:
(1) optical fiber ceramic encapsulation. With epoxy glue caking agent by bonding fiber on ceramic insertion core, the loading level of gate ring oxygen glue caking agent, the epoxy glue caking agent protrusion height scope leading fine groove side making ceramic insertion core is 0.1mm��0.6mm, guarantee that glue circle can cover optical fiber ablation fracture, do not overflow again ceramic insertion core and lead fine groove, complete fiber reflection mirror assembly blank 1 as shown in Figure 2.
(2) root mends glue. Outside assembly epoxy glue caking agent after ceramic packing, apply one layer of tail optical fiber Stress match caking agent, the stress at coupling epoxy glue caking agent and optical fiber coating boundary place. Tail optical fiber Stress match caking agent is the ultra-violet curing glue of a kind of hardness between epoxy glue and optical fiber coating hardness, the object of Stress match avoids fatigue damage in following process process to cause epoxy glue caking agent glue interface optical fiber coating to produce crackle, completes fiber reflection mirror assembly blank 2 as shown in Figure 3.
(3) fiber end face grinding and polishing, its objective is to improve optical fiber cleanliness, reduces fiber end face diffuse-reflectance, it is achieved desirable fiber reflection end face, it is to increase fiber end face reflection efficiency. Concrete grinding and polishing flow process comprises five operations: grinding is removed photoresist, is roughly ground, fine grinding, fine grinding and polishing, be separated the mode all adopting ultrasonic cleaning to combine with scouring between every procedure and control.
(4) fiber end face directly steams plating high-reflecting film, completes fiber reflection mirror assembly as shown in Figure 4. For reducing plated film storing temperature, it is to increase film firmness, have employed ion beaming auxiliary filming processing method. In addition, for improving Assisted by Ion Beam distributing homogeneity in vacuum chamber, have employed symmetric double ion beaming auxiliary filming processing method, namely in vacuum chamber, symmetry has installed 2 ion sources.
(5) fiber reflector component package, its objective is that protection reflectance coating directly contacts with humidity and aggressive atmosphere environment from irradiation impact of colliding with, shield, isolated reflectance coating, it is to increase the job stability under speculum Flouride-resistani acid phesphatase and severe environment; Improve speculum bend resistance performance simultaneously. Concrete implementation method designs singly to seal encapsulating package, long more than the 3mm of shell length ratio ceramic insertion core. During encapsulation; the epoxy resin glue that after single-mode fiber mirror assembly root ceramic insertion core, 1/6��1/2 part coating is mixed with silica powder is adhesively fixed in shell; and leak outside guaranteeing Stress match caking agent and bonding fiber interface outside encapsulation caking agent; also to be ensured that the ceramic insertion core of single mode fiber reflector assembly sinks to shell inside completely simultaneously; and then shell root is applied one layer of tail optical fiber protection silicon rubber, complete the single-mode fiber speculum of a kind of high reliability as shown in Figure 5.
Claims (9)
1. the single-mode fiber speculum of a high reliability, it is characterized in that: comprise fiber reflection mirror assembly and reflectance coating protection parts, fiber reflection mirror assembly comprises optical fiber (1), ceramic insertion core (2), epoxy glue caking agent (3), tail optical fiber Stress match caking agent (4), reflectance coating (5), optical fiber (1) is bonded on ceramic insertion core (2) by epoxy glue caking agent (3), tail optical fiber Stress match caking agent (4) is coated on epoxy glue caking agent (3) outside surface leading fine groove side of ceramic insertion core (2), reflectance coating (5) directly steams and is plated on optical fiber (1), ceramic insertion core (2), on the grinding and polishing end face that epoxy glue caking agent (3) forms jointly, reflectance coating protection parts comprise shell (6), encapsulation caking agent (7), tail optical fiber protection silicon rubber (8), encapsulation caking agent (7) is filled between hollow shell (6) inwall and the outer wall of ceramic insertion core (2), with the relative position of fixing shell (6) Yu fiber reflection mirror assembly, tail optical fiber protection silicon rubber (8) is coated in the root of optical fiber (1), to cover the end face of tail optical fiber Stress match caking agent (4), shell (6), the common composition of encapsulation caking agent (7),
Described tail optical fiber Stress match caking agent (4) is the ultra-violet curing glue of a kind of hardness between epoxy glue caking agent and optical fiber coating hardness.
2. the preparation method of the single-mode fiber speculum of a high reliability, it is characterised in that: comprise the following steps:
(1) with epoxy glue caking agent (3), optical fiber (1) is bonded on ceramic insertion core (2), so that optical fiber (1) is carried out ceramic packing, forms the assembly after ceramic packing;
(2) epoxy glue caking agent (3) outside surface of assembly after step (1) ceramic packing, apply one layer of tail optical fiber Stress match caking agent (4), to mate the stress at the boundary place of the coat of epoxy glue caking agent (3) with optical fiber (1); Described tail optical fiber Stress match caking agent (4) is the ultra-violet curing glue of a kind of hardness between epoxy glue caking agent and optical fiber coating hardness;
(3) end face that the optical fiber (1) of the assembly after step (2) being processed, ceramic insertion core (2), epoxy glue caking agent (3) form jointly carries out grinding and polishing, to improve the smooth finish of optical fiber (1) end face;
(4), after the grinding and polishing end face of the optical fiber (1) of assembly after step (3) processes, ceramic insertion core (2), epoxy glue caking agent (3) composition jointly directly steams plating reflectance coating (5), jointly fiber reflection mirror assembly is formed by optical fiber (1), ceramic insertion core (2), epoxy glue caking agent (3), tail optical fiber Stress match caking agent (4), reflectance coating (5);
(5) encapsulation caking agent (7) is filled in step (4) between the outer wall of the ceramic insertion core (2) of the fiber reflection mirror assembly formed and hollow shell (6) inwall, with the relative position of fixing shell (6) Yu fiber reflection mirror assembly, to realize level Hermetic Package;
(6) root of optical fiber (1) of fiber reflector after step (5) processes applies one layer of tail optical fiber protection silicon rubber (8), to cover the end face of tail optical fiber Stress match caking agent (4), shell (6), encapsulation caking agent (7) composition jointly.
3. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterized in that: in described step (1), need to be controlled by epoxy glue caking agent (3) loading level, it is achieved the protrusion height scope at the epoxy glue caking agent (3) leading fine groove side of ceramic insertion core (2) is 0.1mm��0.6mm.
4. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterized in that: in described step (2), tail optical fiber Stress match caking agent (4) is the ultra-violet curing glue of a kind of hardness between epoxy glue caking agent (3) and the coat hardness of optical fiber (1).
5. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterized in that: in described step (3), the end face that optical fiber (1), ceramic insertion core (2), epoxy glue caking agent (3) form jointly is carried out grinding and polishing, grinding and polishing flow process comprises that grinding is removed photoresist, roughly ground, fine grinding, fine grinding and polishing five operations, all adopt ultrasonic cleaning and scouring between every procedure.
6. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterised in that: grinding and polishing end face directly steams plating reflectance coating in described step (4) and adopts double-ion beam householder method.
7. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterised in that: in described step (5), the Can that shell (6) seals for one end.
8. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterized in that: in described step (5), encapsulation caking agent (7) is the mixture of silica powder and epoxy glue, to increase the viscosity of encapsulation caking agent (7).
9. the preparation method of the single-mode fiber speculum of a kind of high reliability according to claim 2, it is characterised in that: in described step (6), tail optical fiber protection silicon rubber (8) selects that hardness is little, the silicon rubber of high-temp resisting high-humidity resisting.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103852824B (en) * | 2014-02-28 | 2016-04-13 | 桂林聚联科技有限公司 | A kind of fibre reflector for PON monitoring |
| CN108426840A (en) * | 2018-05-21 | 2018-08-21 | 大连理工大学 | A kind of real-time sensor for measuring inside concrete humidity |
| CN109652752B (en) * | 2018-12-28 | 2021-02-19 | 北京信息科技大学 | Method for preparing optical fiber reflector by using ultrasonic fusion coating optical fiber end face |
| CN109818250B (en) * | 2019-02-19 | 2019-12-20 | 武汉安扬激光技术有限责任公司 | All-fiber sealed packaging structure and packaging method of semiconductor saturable absorption mirror |
| CN113703096A (en) * | 2021-08-05 | 2021-11-26 | 北京航天时代光电科技有限公司 | Preparation method of novel surface-mounted type tight-sleeve multimode fiber reflector |
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| US5231684A (en) * | 1992-06-22 | 1993-07-27 | Pdt Systems | Optical fiber microlens |
| CN101206286A (en) * | 2007-11-23 | 2008-06-25 | 上海协拓信息技术有限公司 | Optical component of light transceiver for optical fiber communication |
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