CN203414624U - LC-type plastic fiber connector - Google Patents
LC-type plastic fiber connector Download PDFInfo
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- CN203414624U CN203414624U CN201320396030.XU CN201320396030U CN203414624U CN 203414624 U CN203414624 U CN 203414624U CN 201320396030 U CN201320396030 U CN 201320396030U CN 203414624 U CN203414624 U CN 203414624U
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- optical fiber
- plastic
- lock pin
- optical fibre
- plastic optical
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Abstract
The utility model provides an LC-type plastic fiber connector for solving the problem that a GI type plastic fiber is incapable of cooperating with a conventional fiber connector for use due to a diameter greater than the diameter of a quartz fiber and smaller than the diameter of a common plastic fiber. The LC-type plastic fiber connector comprises a protective cap, an LC casing, a spring, an insertion core, an insertion core outer cover, a sleeve and a tail tube. The insertion core successively penetrate the center positions of the insertion core outer cover, the spring and the LC casing; the sleeve is disposed at the tail portion of the insertion core outer cover; the tail tube encloses a transition area from a fiber to the insertion core outer cover; the insertion core is of a hollow structure; and the insertion core hollow structure has a bore diameter of 1.0 mm.
Description
Technical field
The utility model relates to plastic optical fiber assembling field, is specifically related to a kind of joints of optical fibre.
Background technology
Silica fibre is as the pioneer of fiber optic communication field, and its installation cost is but high.Silica fibre has overcome the serious problem of traditional communication mode electromagnetic interference (EMI), but install, continues very inconveniently, and cost is very high.Silica fibre quality is crisp, bad mechanical strength, install, continue needs certain instrument, equipment and technology; Core diameter is little, and docking is difficult for, along separate routes, be coupled dumb; The bending radius of optical cable is large, easily damages.These problems that silica fibre exists have not only increased the enforcement difficulty of optical fiber telecommunications system, have also increased system installation and maintenance cost simultaneously.In the case, plastic optical fiber is introduced into fiber optic communication field.
Plastic optical fiber does not have the problem of installation and maintenance difficulty, but the transmission range of SI plastic optical fiber is shorter, can only be for hundred rice grain pattern letters.SI plastic fiber core refractive index is greater than coating refractive index, realizes incident light total reflection occurs at core-Pi interface with this, and the transmission of light in fibre core relies on this total reflection to advance with serrate.Because the incident angle of incident light is different, cause each mould light to arrive the asynchronism(-nization) of receiver, and occur pulse strenching phenomenon.Under the limited condition of broadening, the incident angle of the incident light of SI plastic Optical Fiber Transmission is limited, causes its Bandwidth-Constrained, again because of the existence of dispersion, causes SI plastic optical fiber communication distance to be confined to hundred meters.
GI plastic optical fiber has than the much bigger bandwidth of SI plastic optical fiber, and transmission range is also much larger than SI plastic optical fiber simultaneously.GI plastic optical fiber not only has common plastics optical fiber light weight, softness, insensitive to vibrating, bending radius is large, and pulling strengrth is excellent, durable, it is little to take up room, bandwidth is high, it is insensitive that peer end of the connection face is hidden the dust and the chip that stay, do not produce radiation, is not subject to the impact of electromagnetic interference (EMI) and radio frequency interference and noise completely, safe coefficient is high, data transmission possibility is not ravesdropping, cutting, wiring, bonding, polishing and other handling eases, the feature that installation and maintenance cost is low; And light when transmit in GI plastic optical fiber, refractive index Cong Zhou center to edge reduces gradually, radially being para-curve changes, make each mould light transmission speed therein different, and that their arrive time of receiver is almost identical, output pulse strenching is little, so much bigger than SI plastic optical fiber of GI plastic bandwidth of an optical fiber, long transmission distance, can easily transfer to the above distance of 500m simultaneously.
Continuing of any optical fiber all will complete by the joints of optical fibre.Existing silica fibre interface is various in style, but is not all suitable for plastic optical fiber.No matter being external diameter or core diameter, silica fibre is all less than plastic optical fiber, so silica fibre connector is not suitable for plastic optical fiber.Simultaneously, the core diameter of GI plastic optical fiber and external diameter are less than again SI plastic optical fiber, it is not tight that the GI plastic optical fiber insertion SI plastic joints of optical fibre easily occur that the joints of optical fibre coordinate with optical fiber, the problem of the difficult alignment of luminous point, so the SI plastic joints of optical fibre are not suitable for GI plastic optical fiber yet.
Utility model content
The utility model provides a kind of LC plastic joints of optical fibre, and solved GI plastic optical fiber diameter and be greater than silica fibre and be less than again common plastics optical fiber, and the problem that can not be used in conjunction with existing fiber connector.
The technical solution of the utility model is:
A kind of LC plastic joints of optical fibre; comprise tin hat, LC shell, spring, lock pin, lock pin outer cover, sleeve and tail pipe; described lock pin runs through described lock pin outer cover, spring and LC shell center successively; described sleeve is positioned at lock pin outer cover afterbody; described tail pipe is surrounded on optical fiber to described lock pin outer cover transitional region; described lock pin is hollow-core construction, and the diameter of bore of described lock pin hollow-core construction is 1.0mm.
The beneficial effects of the utility model are:
The LC plastic joints of optical fibre that the utility model provides, can realize GI plastic optical fiber and with the stable connection of fibre-optic interface device, advance the universal of GI plastic optical fiber.
GI plastic optical fiber has been realized higher transfer rate and bandwidth, uses a fine optical fiber can transmit at a high speed the vast capacity of 10Gbps, and also has the possibility that further improves transmission speed;
Power consumption is low, saves the energy;
Do not produce electromagnetic noise, be not subject to electromagnetic interference influence, zero radiation; To pull line light by 1/3 than common for cable;
Cable diameter is thinner, has promoted the degree of freedom of appearance property and design;
The feature that possesses plastics distinctive " folding constantly ", and knotting or bending do not affect communication efficiency yet, can arbitrarily process, and freely carries out wires design;
Core diameter and optical fiber external diameter can be changed arbitrarily, plastic optical fibre connector cost can be reduced;
Transmission range is long, has overcome the restriction of common plastics optical fiber hundred rice grain pattern letters.
Accompanying drawing explanation
The multiple fibre diameter comparison diagram of Fig. 1
Fig. 2 LC plastic joints of optical fibre figure in bulk
Fig. 3 LC plastic joints of optical fibre outside drawing.
Embodiment
Optical fiber communication have bandwidth, at a high speed, exempt from electromagnetic interference (EMI), radiationless, anti-eavesdrop, the multiple advantage such as safe and reliable.At present optical fiber communication medium has two kinds of silica fibre and plastic optical fibers, and wherein, plastic optical fiber can be divided into again SI plastic optical fiber and GI plastic optical fiber.
Silica fibre luminous point docking precision prescribed is high, needs professional instrument, technology to operate, and meanwhile, silica fibre is very responsive to vibration, high to application environmental requirement.SI plastic Optical Fiber Transmission distance is 100m only, at present can only be for " last hundred meters " engineering of fiber entering household.GI plastic optical fiber has overcome the shortcoming that silica fibre installation and maintenance cost is high and SI plastic Optical Fiber Transmission distance is short simultaneously, is conducive to the universal of fiber optic network.
The utility model is greater than silica fibre for GI plastic fibre diameter and is less than again common plastics optical fiber, and the problem that can not be used in conjunction with existing fiber connector, a kind of LC plastic joints of optical fibre of the GI of being applicable to plastic optical fiber are provided, have been conducive to advance the universal of GI plastic optical fiber.The difference in diameter of multiple optical fiber as shown in Figure 1.
The LC plastic joints of optical fibre provided by the utility model, as shown in Figures 2 and 3, comprise tin hat 21, LC shell 22, spring 23, lock pin 24, lock pin outer cover 25, sleeve 26 and tail pipe 27.Lock pin 24 is hollow-core construction, by metal or plastics, made, external diameter value is 1.25mm, diameter of bore is decided to be 1.0mm, convenience when the perfluor plastic optical fiber that has guaranteed external diameter 0.5mm inserts plastic optical fibre connector, meanwhile, be also unlikely to because external diameter and the lock pin internal orifice dimension of perfluor plastic optical fiber have big difference, and make plastic optical fibre connector unstable with being connected of perfluor plastic optical fiber.
Figure 2 shows that this LC plastic joints of optical fibre assembling sequence, mode is as follows:
With scissors intercepting, need the plastic optical fiber of length, use optical fiber cutter cutting optical fibre, obtain smooth end face;
Apart from end points 2cm place, (distance of peelling off optical fiber oversheath can appropriately adjust according to actual conditions with wire-stripping pliers, to peel off optical fiber oversheath, but guarantee that plastic optical fibre connector penetrates after optical fiber, fiber end face flushes with the lock pin mouth of plastic optical fibre connector), tail pipe 27 is penetrated to optical fiber;
The plastic optical fibre connector assembling is penetrated to the optical fiber that strips oversheath, obtain semi-manufacture plastic optical fibre connector;
The plastic optical fibre connector assembling is assembled into LC shell 22;
So far, the LC plastic joints of optical fibre have formally assembled, as shown in Figure 3.
It should be noted that, LC shell 22 utilizes glue or other stickums and connector to be fixed together, so the LC plastic joints of optical fibre that assemble can not be split, but, plastic optical fiber can freely penetrate or extract out lock pin 24, when certainly plastic optical fiber is extracted lock pin 24 out, need to apply certain external force, and the plastic optical fiber that has again departed from the LC plastic joints of optical fibre can be combined with other plastic optical fibre connectors again.
In lock pin 24 is rolled in exposed flexible optical fibre packages, realized convenient and swift that optical fiber patches, protect optical fiber to avoid external force direct effect simultaneously, safeguarded the stable of optical fiber property, lock pin outer cover 25 is the assembling of lock pin 24 and LC shell 22 fixedly, and spring 23 is made of metal, its existence has been avoided because of the excessive end face that damages of grafting pressure, also avoided lock pin 24 to be subject to the situation of external force vibration, sleeve 26 is firmly fixed on plastic optical fibre connector on optical fiber, has guaranteed the stability of whole assembly simultaneously, LC shell 22 and tail pipe 27 form a plastic optical fibre connector containment vessel, plastic optical fibre connector is shielded, make plastic optical fibre connector avoid outside direct injury, extend the serviceable life of plastic optical fibre connector, simultaneously on LC shell 22 with the plug-in switch of a resilient pin structure, this switch can and connect the spacing of relevant position between element as location and plastic optical fibre connector, be convenient to being connected and locking of plastic optical fibre connector and interface, tail pipe 27 is positioned at optical fiber to the transitional region of plastic optical fibre connector, prevent that connecting portion is directly subject to damage, tin hat 21 both can be protected optical fiber connector, can prevent that again distal optical fiber from can launch harmfulness radiation.
When these LC plastic joints of optical fibre are applicable to perfluor plastic optical fiber system, because perfluor plastic optical fiber diameter is greater than the silica fibre of widespread use now, be less than again common PMMA plastic optical fiber, so these LC plastic joints of optical fibre are decided to be 1.0mm except lock pin 24 internal orifice dimensions, the internal orifice dimension of spring 23, lock pin outer cover 25, sleeve 26 and tail pipe 27 also needs to do relevant change according to the external diameter of perfluor plastic optical fiber and optical cable.Meanwhile, these LC plastic joints of optical fibre can use with standard LC type interface kit.
It is single core plastic optical fibre connector that the utility model provides the LC plastic joints of optical fibre; according to the difference of tail optical fiber used and insertion core end face; can be divided into several large classes; tail optical fiber is used the LC plastic joints of optical fibre of single-mode fiber to be called LC type single mode plastic optical fibre connector, and tail optical fiber is used the LC plastic joints of optical fibre of multimode optical fiber to be called LC type multimode plastic optical fibre connector; Insertion core end face is that the plastic optical fibre connector of sphere is called the LC/PC plastic joints of optical fibre, and insertion core end face is that the plastic optical fibre connector of oblique angle sphere is called the LC/APC plastic joints of optical fibre.The utility model provides uni-core bidirectional plastic optical fiber system can select LC type multimode plastic optical fibre connector.
The spectrophotometric data of the LC plastic joints of optical fibre provided by the utility model is as follows:
The spectrophotometric data of LC type single mode plastic optical fibre connector:
A) the insertion Sun Hao≤0.35dB of arbitrary plastic optical fibre connector and standard interface (containing repeatability); Hui ripple Sun Hao≤40dB (LC/PC) ，≤60dB (LC/APC).
B) two insertion Sun Hao≤0.5dB that plastic optical fibre connector connects arbitrarily; Return loss >35dB (LC/PC); >58dB (LC/APC).
The spectrophotometric data of LC type multimode plastic optical fibre connector:
A) the insertion Sun Hao≤0.2dB of arbitrary plastic optical fibre connector and standard interface (containing repeatability).
B) two insertion Sun Hao≤0.3dB that plastic optical fibre connector connects arbitrarily.
LC type interface or socket are with respect to loss <0.2dB (single mode), the <0.1dB (multimode) of two LC plastic joints of optical fibre.
The working temperature of the LC plastic joints of optical fibre is :-25 ℃～+ 70 ℃.
The utility model provides the LC plastic material that the joints of optical fibre use and optical fiber cable to guarantee without catabiosis, fire-retardant, and meets environmental requirement.Can stand the required test condition of plastic optical fibre connector.The adhesive glue that making plastic optical fibre connector is used should have no adverse effects to plastic optical fibre connector structure, and its physics, chemistry and optical characteristics should be mated with optical fiber, must not have the situation of infringement plastic optical fibre connector optical property to occur.
The beneficial effects of the utility model are:
The LC plastic joints of optical fibre that the utility model provides, can realize GI plastic optical fiber and with the stable connection of fibre-optic interface device, advance the universal of GI plastic optical fiber.
GI plastic optical fiber has been realized higher transfer rate and bandwidth, uses a fine optical fiber can transmit at a high speed the vast capacity of 10Gbps, and also has the possibility that further improves transmission speed;
Power consumption is low, saves the energy;
Do not produce electromagnetic noise, be not subject to electromagnetic interference influence, zero radiation; To pull line light by 1/3 than common for cable;
Cable diameter is thinner, has promoted the degree of freedom of appearance property and design;
The feature that possesses plastics distinctive " folding constantly ", and knotting or bending do not affect communication efficiency yet, can arbitrarily process, and freely carries out wires design;
Core diameter and optical fiber external diameter can be changed arbitrarily, plastic optical fibre connector cost can be reduced;
Transmission range is long, has overcome the restriction of common plastics optical fiber hundred rice grain pattern letters.
Above content is in conjunction with concrete optimal technical scheme further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (2)
1. the LC plastic joints of optical fibre; it is characterized in that; comprise tin hat, LC shell, spring, lock pin, lock pin outer cover, sleeve and tail pipe; described lock pin runs through described lock pin outer cover, spring and LC shell center successively; described sleeve is positioned at lock pin outer cover afterbody, and described tail pipe is surrounded on optical fiber to described lock pin outer cover transitional region.
2. a kind of LC plastic joints of optical fibre as claimed in claim 1, is characterized in that, the lock pin that described plastic optical fibre connector comprises is hollow-core construction, and the diameter of bore of described lock pin hollow-core construction is 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320396030.XU CN203414624U (en) | 2013-07-05 | 2013-07-05 | LC-type plastic fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320396030.XU CN203414624U (en) | 2013-07-05 | 2013-07-05 | LC-type plastic fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414624U true CN203414624U (en) | 2014-01-29 |
Family
ID=49977506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320396030.XU Expired - Fee Related CN203414624U (en) | 2013-07-05 | 2013-07-05 | LC-type plastic fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414624U (en) |
-
2013
- 2013-07-05 CN CN201320396030.XU patent/CN203414624U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20160705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |