CN101251630A - Optical fiber casing tube of optical fiber head - Google Patents
Optical fiber casing tube of optical fiber head Download PDFInfo
- Publication number
- CN101251630A CN101251630A CNA2008100708861A CN200810070886A CN101251630A CN 101251630 A CN101251630 A CN 101251630A CN A2008100708861 A CNA2008100708861 A CN A2008100708861A CN 200810070886 A CN200810070886 A CN 200810070886A CN 101251630 A CN101251630 A CN 101251630A
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- China
- Prior art keywords
- optical fiber
- fiber head
- ferrule
- bushing
- porcelain bushing
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Abstract
The invention discloses an optical fiber bushing for an optical fiber head which comprises an optical fiber wire and an optical fiber bushing, wherein the tail end of the optical fiber wire is packaged in an inner hole of the optical fiber bushing which is a ceramic bushing. With the adoption of the technology, the optical fiber head of the ceramic bushing can be conveniently used in an optical fiber collimator, an isolator, a wavelength division multiplex and other optical passive communication devices to replace a glass core. The yield of domestic ceramic bushings is quite large, prices of materials are inexpensive, and manufacturing cost is low, so cost in adopting the optical fiber head of the ceramic bushing can be obviously lower than the optical fiber head of the glass core.
Description
Technical field
The present invention relates to the optical fiber communication technology field, relate in particular to a kind of various smooth passive communication devices that are used for, as the ferrule of the optical fiber head (Fiber Pigtail) in optical fiber collimator, fibre optic isolater, the light wavelength division multiplexing etc.
Background technology
In the optical communication device of spread fiber, the structure of optical fiber head is encapsulated in the tail end of optical fiber cable 11 in the glass capillary (being designated hereinafter simply as " glass core ") 12 usually as shown in Figure 1, makes optical fiber head 1, so that the polishing of end face, the assembling in plated film and later stage.
Optical fiber collimator is the most widely used optical communication device of optical fiber head.Its significant feature is that the diverging light focussed collimated by the optical fiber cable outgoing is become Gaussian beam, so that follow-up processing application to light beam, and reduce axial optical coupling loss greatly.The optical fiber collimator of a standard is made up of three parts: outer tube, optical fiber head and optical lens.Wherein optical fiber head is used for fixing optical fiber cable, and lens are used for the outgoing beam of optical fiber head is focused on, and outer tube then is used for fixing the above two relative position, makes near going out the front focus that luminous point drops on lens, to reach best collimating apparatus effect of optical fiber head.
Optoisolator is typical passive light communication device.Main forward transmitted and the reverse isolation that realizes light.The optoisolator of standard also comprises three parts: the optical fiber collimator of pairing, isolator core (core) and outer tube.Wherein collimating apparatus is used for realizing beam collimation, and core realizes that beam propagation is irreversible, and outer tube then is used for encapsulating.
Similar above-mentioned passive device, the room for price-cut of the starting material that adopt such as glass core, lens etc. is little at present.Therefore how find the proper raw material substitute admissible price reduction approach of a kind of manufacturer of can yet be regarded as under the device optical property situation not influencing.
Summary of the invention
The object of the present invention is to provide a kind of ferrule of lower-cost optical fiber head.
The present invention is by the following technical solutions: optical fiber head comprises optical fiber cable and ferrule, and the tail end of optical fiber cable is encapsulated in the endoporus of ferrule, and wherein ferrule is a porcelain bushing.
Employing porcelain bushing instead of glass core of the present invention is used for making ceramic optical fiber head, and following advantage is arranged:
One, the lock pin that is mainly used in the joints of optical fibre of porcelain bushing in the market, because the joints of optical fibre in use need to reduce as much as possible the butt joint coupling loss of matching connector, therefore to be higher than to be assembled into the glass core of purpose the interior external diameter tolerance of porcelain bushing and the requirement of right alignment.The interior external diameter tolerance of porcelain bushing all is 1um on the current market, and right alignment is 0.002, is better than mechanical dimension's index of glass core, and its external diameter tolerance is 10um, id tolerance 2um, right alignment 0.005.Therefore when assembling, since the advantage on mechanical index, some optical properties of porcelain bushing optical fiber head, and as pointing accuracy, axle waits partially and also can correspondingly improve.
Two, Tao Ci hardness is greater than glass, and optical fiber head can more effectively be avoided collapsing the harmful effect that the limit produces because of end face in production run and application process afterwards.
Three, the external dimensions of porcelain bushing optical fiber head can be guaranteed fully by the machining precision of porcelain bushing, and the 353ND that the passive device industry usually adopts is during to ceramic bonding, and its firmness is not less than the bonding to glass, therefore can not increase the device assembly difficulty.
In sum, adopt the optical fiber head of porcelain bushing can be used for light passive communication devices such as optical fiber collimator, isolator, wavelength-division multiplex very easily, replace glass core.Because the turnout of domestic porcelain bushing is quite big, and cost of material is cheap, processing cost is low, therefore adopts the cost of porcelain bushing optical fiber head can be starkly lower than the glass core optical fiber head.
Description of drawings
The present invention is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of existing glass core optical fiber head;
Fig. 2 is the structural representation of the single core porcelain bushing of the present invention optical fiber head;
Fig. 3 is the structural representation of twin-core porcelain bushing optical fiber head of the present invention;
Fig. 4 is the structural representation that porcelain bushing optical fiber head of the present invention is applied to optical fiber collimator;
Fig. 5 is the structural representation that porcelain bushing optical fiber head of the present invention is applied to optoisolator.
Embodiment
See also shown in Figure 2ly, optical fiber head 1 of the present invention comprises optical fiber cable 11 and ferrule 13, and the tail end of optical fiber cable 11 is encapsulated in the endoporus of ferrule 13, can adopt glue bond to encapsulate, and wherein ferrule 13 is a porcelain bushing.The output end face of optical fiber head 1 can also be processed into the angle of wedge, perhaps plated film is to improve the result of use of using.
See also shown in 3, optical fiber head 1 of the present invention comprises two above optical fiber cables 11 and porcelain bushing 13 again, and porcelain bushing 13 is provided with two corresponding above endoporus, and the tail end of optical fiber cable 11 is encapsulated in the endoporus of porcelain bushing 13.
Shown in Fig. 4 or 5, optical fiber head 1 is encapsulated in optical fiber collimator, the fibre optic isolater.
Claims (4)
1, a kind of ferrule of optical fiber head, optical fiber head comprises optical fiber cable and ferrule, the tail end of optical fiber cable is encapsulated in the endoporus of ferrule, it is characterized in that: ferrule is a porcelain bushing.
2, the ferrule of a kind of optical fiber head according to claim 1 is characterized in that: when optical fiber cable is two when above, porcelain bushing is provided with two corresponding above endoporus.
3, the ferrule of a kind of optical fiber head according to claim 1 is characterized in that: its porcelain bushing replaces glass core in optical fiber head, is applied in the different light passive communication device of structure.
4, the ferrule of a kind of optical fiber head according to claim 3 is characterized in that: the light passive communication device that the optical fiber head of its porcelain bushing is used refers to optical fiber collimator, fibre optic isolater, light wavelength division multiplexing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100708861A CN101251630A (en) | 2008-04-14 | 2008-04-14 | Optical fiber casing tube of optical fiber head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100708861A CN101251630A (en) | 2008-04-14 | 2008-04-14 | Optical fiber casing tube of optical fiber head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101251630A true CN101251630A (en) | 2008-08-27 |
Family
ID=39955112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100708861A Pending CN101251630A (en) | 2008-04-14 | 2008-04-14 | Optical fiber casing tube of optical fiber head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101251630A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798948A (en) * | 2012-08-03 | 2012-11-28 | 无锡爱沃富光电科技有限公司 | Capillary tube packaging structure of single-mode optical fiber pigtail |
| CN105870767A (en) * | 2016-05-03 | 2016-08-17 | 中电科天之星激光技术（上海）有限公司 | Light direction adjustable optical fiber output laser generator |
| CN109870772A (en) * | 2017-12-01 | 2019-06-11 | 福州高意通讯有限公司 | A kind of optical fiber connector that can be plugged for a long time |
| CN110718842A (en) * | 2018-07-12 | 2020-01-21 | 广东华快光子科技有限公司 | Microchip laser device with reliable structure and convenient optical fiber output |
-
2008
- 2008-04-14 CN CNA2008100708861A patent/CN101251630A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798948A (en) * | 2012-08-03 | 2012-11-28 | 无锡爱沃富光电科技有限公司 | Capillary tube packaging structure of single-mode optical fiber pigtail |
| CN102798948B (en) * | 2012-08-03 | 2014-05-14 | 无锡爱沃富光电科技有限公司 | Capillary tube packaging structure of single-mode optical fiber pigtail |
| CN105870767A (en) * | 2016-05-03 | 2016-08-17 | 中电科天之星激光技术（上海）有限公司 | Light direction adjustable optical fiber output laser generator |
| CN109870772A (en) * | 2017-12-01 | 2019-06-11 | 福州高意通讯有限公司 | A kind of optical fiber connector that can be plugged for a long time |
| CN110718842A (en) * | 2018-07-12 | 2020-01-21 | 广东华快光子科技有限公司 | Microchip laser device with reliable structure and convenient optical fiber output |
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Open date: 20080827 |