CN109870774A - A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft - Google Patents
A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft Download PDFInfo
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- CN109870774A CN109870774A CN201910175606.1A CN201910175606A CN109870774A CN 109870774 A CN109870774 A CN 109870774A CN 201910175606 A CN201910175606 A CN 201910175606A CN 109870774 A CN109870774 A CN 109870774A
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Abstract
A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft, can solve that existing decaying cable assembly decaying is not integrated high, and decaying volume is big, it has not been convenient to the technical issues of high-density wiring use.Including the 2 cores decaying jumper wire construction being mutually adapted and 2 core adapter base structures；The 2 core decaying jumper wire construction includes 2 core armored optical cables, and two core plugs are arranged in the both ends of 2 core armored optical cables；The 2 core armored optical cable includes 2 core fibres built in spiral stainless steel flexible hose；Fixed value attenuator is set on 2 core fibre.Optical cable integration decaying integrated design degree of the invention is high, and connector is easily installed, it can quickly be laid with, it can guarantee transmission performance while mitigate system weight and simplied system structure, the connector can disposably complete connecting or separating for the decaying optical cable of 2 core numbers, can be general in various Large Radar systems.
Description
Technical field
The present invention relates to optical connector technical fields, and in particular to a kind of 2 core of all-in-one micro decaying cable assembly and
Manufacture craft.
Background technique
Current demand of the various weaponrys to damping assemblies is increasing.In airborne, vehicle environment, to connector
Density, weight, the simplification of operation have strict requirements, and the interference of aircraft and panzer itself vibratory impulse is strongly
, just there is connection device good reliability, and optical connector is required there are the performance requirements such as good interchangeability.So right
Single-Input Single-Output link needs to decay, generally all selects FC, LC, ST, DIN under the premise of space requirement plug maximum outside diameter≤10mm
Equal single core connector connector+single attenuator.
But the packing density of existing optical fiber connector is low, and connector is more, overall weight is big, attenuator connection it is cumbersome,
It is routed and complicated for operation.
I.e. traditional decaying cable assembly has been unable to meet the transmission of large capacity information；Decay integrated not high, body of decaying
Product is big, it has not been convenient to which high-density wiring uses.
Summary of the invention
2 core of a kind of all-in-one micro decaying cable assembly proposed by the present invention and manufacture craft, can solve existing decaying light
Cable assembly decaying is not integrated high, and decaying volume is big, it has not been convenient to the technical issues of high-density wiring uses.
To achieve the above object, the invention adopts the following technical scheme:
A kind of 2 core of all-in-one micro decaying cable assembly, including the 2 cores decaying jumper wire construction being mutually adapted and the switching of 2 cores
Holder structure；
The 2 core decaying jumper wire construction includes 2 core armored optical cables, and two core plugs are arranged in the both ends of 2 core armored optical cables；
The 2 core armored optical cable includes 2 core fibres built in spiral stainless steel flexible hose；
Fixed value attenuator is set on 2 core fibre.
Further, sheath is arranged in the external of the spiral stainless steel flexible hose.
Further, the material of the sheath includes high-modulus Kevlar aramid yarn, mesh grid, plastic cement.
Further, the 2 core adapter base structure uses bayonet coupling.
On the other hand, invention additionally discloses the manufacture crafts of 2 core of all-in-one micro decaying cable assembly, including following step
Suddenly,
S100, fibre optic attenuator is first made on 2 core fibres, fibre optic attenuator forms fixed value attenuator after having made；
S200, the structural shape again 2 core fibres in conjunction with 2 core armored optical cables are packaged, and form integrated 2 cores decaying light
Cable；
S300, two core plugs are arranged to the both ends of integrated 2 cores decaying optical cable, and configure 2 core adapter base structures.
Further, the production of fibre optic attenuator is made of oxyhydrogen flame fused biconical taper technique in the step S100,
Specifically include following steps,
S101, optical fiber fused tapering；
Single mode or multimode fibre that 2 remove coat are drawn close in a set manner, added under oxyhydrogen flame high temperature
Heat fusing finally generates one section of two-way conical structure simultaneously to 2 side stretchings, the coupling of the optical signal of input in this bicone structure
It closes area power occurs and reallocate, make a part of light continue to transmit from " straight-through arm " optical fiber, another part light is from " coupling arm " optical fiber
Transmission；
S102, coupled zone is packaged.
Further, coupled zone is packaged in the step S102, comprising:
First one of quartz base plate encapsulation, then two glass tubes encapsulate, last three steel pipes encapsulation.
As shown from the above technical solution, the connection that 2 core of all-in-one micro of the invention decaying cable assembly uses connects device ruler
Very little small, optical cable integration decaying integrated design degree is high, using advanced fixed value decay technique, integrative packaging technology, optical fiber
Docking technique, ensure that 2 core of all-in-one micro decaying cable assembly and meanwhile meet be lost it is small, consistency is high, stabilization small in size can
Lean on, decay the simple switching of non-decaying, and connector is easily installed, and can be quickly laid with, and can be guaranteed transmission performance while be mitigated
System weight and simplied system structure, the connector can disposably complete connecting or separating for the decaying optical cable of 2 core numbers, can be
It is general in various Large Radar systems.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the flow chart of preparation method of the invention；
Fig. 3 is 2 core adapter base structure schematic diagrames of the invention；
Fig. 4 is connector construction schematic diagram of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
The cable assembly as shown in Figure 1,2 core of all-in-one micro described in the present embodiment is decayed, 2 cores including being mutually adapted decline
Subtract the core of jumper wire construction 1 and 2 adapter base structure 2；
The 2 core decaying jumper wire construction 1 includes that two core plugs are arranged in the both ends of 2 core armored optical cable, 11,2 core armored optical cable 11
12；
The 2 core armored optical cable 11 includes 2 core fibres built in spiral stainless steel flexible hose；
Fixed value attenuator 13 is set on 2 core fibre.
Wherein 2 cores decaying wire jumper i.e. 2 core armored optical cables are 2 core fibres as built in spiral stainless steel flexible hose, are increased outside hose
Modulus Kevlar aramid yarn, mesh grid and extraordinary plastic cement oversheath composition, make its long-term use temperature expand to -50 DEG C~85
℃.Cable jacket materials it is thermally conductive it is fast, insulation resistance is high, wear-resisting, resistant to chemical etching, not hydrophilic, not spies such as oleophylic, density height
Point.
2 core adapters i.e. 2 core fibre connectors use bayonet coupling, and convenient and efficient, outer dimension is equal to standard FC
Connector.This connector construction integrated level is higher, and structural principle has already passed through the various equipment such as airborne, vehicle-mounted, ground
Long-term test, it is stable and reliable for performance.
The specific manufacturing process of the present embodiment is as follows:
Formation fixed value attenuator after fibre optic attenuator completes is first passed through, in conjunction with the structural type of 2 core armored optical cables
Formula is packaged, and forms integrated 2 cores decaying optical cable.
One, fibre optic attenuator manufacturing process is as follows:
Draw the fixed fibre optic attenuator production of tapered 10dB and packaging technology
Light, which divides towpath device mainly, 2 seed types:
One is the optical fiber splitters using traditional oxyhydrogen flame fused biconical taper (FBT)；
Another kind is planar optical waveguide (PLC) optical splitter using integrated optics technique production.
1, fused biconical taper formula (FBT) mono-/multi- mode fiber splitter technique
FBT optical fiber splitter is mainly optical fiber, manufacture craft mainly include include optical fiber fused tapering, coupled zone encapsulation
(encapsulation, two encapsulation, three encapsulation together).
Optical fiber fused tapering process are as follows:: heating melting finally generates one section of two-way circle simultaneously to 2 side stretchings under flame high temperature
Wimble structure, the optical signal of input occur power in the coupled zone of this bicone structure and reallocate, and make a part of light from " straight-through
Arm " optical fiber continues to transmit, and another part light is transmitted from " coupling arm " optical fiber.
Fused biconical taper cardinal principle by control technological parameter such as tensile speed, is stretched using " weakly coupled-mode theory "
Length, melting temperature, melt region, flame location, the technological parameters such as hydrogen-oxygen air-flow size, ratio reach the branch function of optical signal
Energy.
Coupled zone encapsulation specifically includes that one of encapsulation (quartz base plate), two encapsulation (glass tube), three encapsulation (steel
Pipe), guarantee the reliability of the engineer application of full fiber type splitter.
2, fixed fibre optic attenuator (1 × 2 multimode splitter) main indicator of 10dB
The fixation fibre optic attenuator mainly solves high/low temperature under military environment (- 55 DEG C~+85 DEG C), vibratory impulse, height
Reliably, small integrated, fixed splitting ratio rigors, reach military products class requirement.In the current behaviour in service of ancillary engineering facility
Well.
The related specification of the 10dB of the present embodiment fixed fibre optic attenuator (1 × 2 multimode splitter) is as follows:
Two, integrated 2 cores decaying connector design
Integrated 2 cores decaying connector uses bayonet coupling, and convenient and efficient, outer dimension is equal to standard FC connection
Device.
As shown in figure 3, connector construction uses dual spring system light channel structure, the spring at adapter both ends is in butt coupling mistake
It is compressible in journey, and provide to relay, a framework spring first provides the engagement force of connector plug and socket, and buffering is outer
The interference that boundary vibrates, impacts, while primary positioning is carried out to optical path, the stable optical path of next 2 light terminal springs, guarantee light terminal
Reliable contacts.Connector is positioned using 3 keys, and 1 major key and 2 auxiliary bonds are of different size, prevent from mispluging and pull out.Integrated level is higher,
Its structural principle has already passed through the long-term test of the various equipment such as airborne, vehicle-mounted, ground, stable and reliable for performance.
1) 2 core of all-in-one micro decaying wire jumper mating surface design
As shown in figure 4,2 core of all-in-one micro decaying wire jumper is positioned using 3 keys, close face angle degree for 140 °, 75 ° and
145°.And it is 145 °, 75 ° and 140 ° that the pin connector of module end, which closes face angle degree, 1 major key and 2 auxiliary bonds are of different size, prevent
It only misplugs and pulls out.
The engagement force of 2 core connector plugs and duplex, can buffer the interference of extraneous vibration, impact, while right
Optical path carries out precision positioning, guarantees the reliable contacts of light terminal.This duplex needs to guarantee 2 core fibre low insertion losses
Unanimously.For this purpose, we devise " floating porcelain bushing structure ".Parallel light path and optics support structure have certain gap, and
Ceramic insertion core is connect with optics support structure by floating spring, can be floated in a certain range.In this way, when optical path bearing knot
Structure is influenced by external force or temperature, and when so that generating angle offset between pilot hole, parallel light path " floating ", 2 ceramics are inserted
By porcelain bushing automatic centering, structure ensure that non-interference between multi-core optical fiber core, and cable assembly is made to can be realized multicore
Optical fiber low-loss consistency is fine.
2) casing and its alignment design
In order to obtain 0.5dB loss below in the connection of multimode fibre, it is necessary to 2 optical fiber pair of done with high accuracy
Standard, and optical fiber connector is needed to still ensure that fine registration in the case where plugging repeatedly.The processing request of casing reaches sub-micron
Precision.In casing processing, especially important size is outer diameter, aperture and the bias in hole of casing.
3) integrated dustproof design
2 core of all-in-one micro decays wire jumper using integrated design, wherein playing the porcelain bushing of light connects alignment effect
It is encapsulated in the inside of 2 core of all-in-one micro decaying wire jumper, there is radial dustproof effect.And 2 core of all-in-one micro decaying wire jumper
By the way of being horizontally mounted, the dust in airborne circumstance will not fall directly into 2 core of all-in-one micro decaying wire jumper inner ceramic
In casing, so the decaying wire jumper integrated design of 2 core of all-in-one micro has certain dust-proof effect.
2 core of the all-in-one micro decaying jumper wire plug socket connection of the present embodiment belongs to mechanical tight fit, and joint gap is small
In 0.05mm, general granule foreign be cannot be introduced into inside connector.And 2 core connectors and duplex junction have
The dust of sealing ring, the light loss that can will not have an impact with secondary dust-proof, in course of normal operation enters.As long as 2 core connectors with
Duplex separation can cover dust cap in time, and will play prevents contaminated effect.
4) low-loss designs
The meaning of this index is junction loss requirement≤0.5dB after 2 plugs and assembly assembly, repeatability≤
0.3dB, interchangeability≤0.3dB, influence this project indicator because being known as the following:
1, control with raw material
The raw material of most critical are ceramic ferrule in connector, it directly influences transverse direction when optical fiber connector docking
Deviation, angular deviation, gap, these parameters directly determine the insertion loss index of connector.
In actual optical fiber connector, caused by the structure design of end face pretightning force has been substantially absent because of gap
Loss.Therefore, how to reduce the key that lateral deviation and angular deviation are just developed at optical fiber connector, ceramic ferrule conduct
Key raw material, its screening seem particularly necessary, it is the preliminary guarantee for producing high quality connector.
2, termination power design:
End face contact force when ceramic contact pin docks in optical fiber connector, there are a best force value, standard provides contact pin
Body end face stress should be between 7.8~11.8N.
For miniature connector designed by the present embodiment, it is as follows to design spring parameter:
1, material: stainless steel, shear modulus G=80000Mpa
2, spring filament diameter: d=Φ 0.4mm, central diameter D=Φ 2.4mm curl up ratio=6
4, number of total coils=8+2；Number of active coils=8, bracing ring=2, free height 9.3mm
5, a length of 6mm of connector spring cavity design
Calculating the termination power that single spring generates as follows is 8.1N
The termination power that so 2 springs generate is 16.2N, removes the withdrawal force 5N of porcelain bushing, connector plug and is inserted
Endface of ferrule stress is 11.2N when seat inserting, meets design requirement.
3, grinding technics:
When often requiring that interchangeability and repeatability index in connector production, when generally use the more set of connectors of production at
Product are interchangeable test, filter out the sample for being able to satisfy interchangeability index.
After the present embodiment is using fibre optic interferometer, precision control fiber end face quality, for the first time repeatability and interchangeability
Index carries out parametric control and proposes following Con trolling index according to production experience in recent years:
| Screening programme | It is required that | Instrument | |
| 1 | Apex offset | ≤50μm | Micrometer |
| 2 | Optical fiber height | ±50μm | Degree of eccentricity tester |
| 3 | Radius of curvature | 7 μm~25 μm | Standard divider |
From the foregoing, it will be observed that 2 core of the all-in-one micro decaying cable assembly of the embodiment of the present invention is to receive a luminous link for one
Signal transmission is realized after decaying by fixed value, and there is stable attenuation loss, optical cable and attenuator integrated design.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
- The cable assembly 1. a kind of 2 core of all-in-one micro is decayed, it is characterised in that: including the 2 cores decaying jumper wire construction being mutually adapted (1) and 2 core adapter base structures (2)；2 core decaying jumper wire construction (1) includes 2 core armored optical cables (11), and the both ends of 2 core armored optical cables (11) are arranged two cores and insert Head (12)；The 2 core armored optical cable (11) includes 2 core fibres built in spiral stainless steel flexible hose；Fixed value attenuator (13) are set on 2 core fibre.
- The cable assembly 2. 2 core of all-in-one micro according to claim 1 is decayed, it is characterised in that: the spiral stainless steel Sheath is arranged in the external of hose.
- The cable assembly 3. 2 core of all-in-one micro according to claim 2 is decayed, it is characterised in that: the material of the sheath Including high-modulus Kevlar aramid yarn, mesh grid, plastic cement.
- The cable assembly 4. 2 core of all-in-one micro according to claim 1 is decayed, it is characterised in that: the 2 core adapter knot Structure (2) uses bayonet coupling.
- The cable assembly 5. 2 core of all-in-one micro according to claim 4 is decayed, it is characterised in that: the 2 core adapter knot Structure (2) uses dual spring system light channel structure.
- 6. the manufacture craft of the decaying of 2 core of all-in-one micro described in -5 any one cable assembly according to claim 1, feature It is: includes the following steps,S100, fibre optic attenuator is first made on 2 core fibres, fibre optic attenuator forms fixed value attenuator after having made；S200, the structural shape again 2 core fibres in conjunction with 2 core armored optical cables (11) are packaged, and form integrated 2 cores decaying light Cable；S300, two core plugs (12) are arranged to the both ends of integrated 2 cores decaying optical cable, and configure 2 core adapter base structures (2).
- 7. the manufacture craft of 2 core of all-in-one micro decaying cable assembly according to claim 6, it is characterised in that:The production of fibre optic attenuator is made of oxyhydrogen flame fused biconical taper technique in the step S100, specifically includes following step Suddenly,S101, optical fiber fused tapering；Single mode or multimode fibre that 2 remove coat are drawn close in a set manner, heated under oxyhydrogen flame high temperature molten Melt while to 2 side stretchings, finally generates one section of two-way conical structure, the optical signal of input is in the coupled zone of this bicone structure Power occurs to reallocate, a part of light is made to continue to transmit from " straight-through arm " optical fiber, another part light is transmitted from " coupling arm " optical fiber；S102, coupled zone is packaged.
- 8. the manufacture craft of 2 core of all-in-one micro decaying cable assembly according to claim 7, it is characterised in that:Coupled zone is packaged in the step S102, comprising:First one of quartz base plate encapsulation, then two glass tubes encapsulate, last three steel pipes encapsulation.
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| CN201910175606.1A CN109870774A (en) | 2019-03-08 | 2019-03-08 | A kind of 2 core of all-in-one micro decaying cable assembly and manufacture craft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110146955A (en) * | 2019-06-13 | 2019-08-20 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | A kind of optical-fiber coupling connector and preparation method thereof of pluggable connection |
| CN114488404A (en) * | 2021-12-28 | 2022-05-13 | 深圳市欧耐特通讯有限公司 | Fixed attenuator |
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