CN207704071U - Filter chip fiber coupler - Google Patents
Filter chip fiber coupler Download PDFInfo
- Publication number
- CN207704071U CN207704071U CN201721647554.6U CN201721647554U CN207704071U CN 207704071 U CN207704071 U CN 207704071U CN 201721647554 U CN201721647554 U CN 201721647554U CN 207704071 U CN207704071 U CN 207704071U
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- CN
- China
- Prior art keywords
- metal tube
- optical fiber
- collimator
- packaged glass
- glass pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of filtering chip fiber couplers, metal tube including outer layer, the packaged glass pipe of encapsulation is set in metal tube, two groups of collimators are arranged in the both ends of packaged glass pipe, two groups of collimators are separately connected the optical fiber of incidence end and the optical fiber of exit end, in the collimator of incidence end optical fiber connection, connect an extension tube, spectro-film is arranged in the end of extension tube, the optical fiber joint end of collimator stretches out packaged glass pipe both sides, filler is set in metal tube remaining space in metal tube is filled and stretches out metal tube and forms a protrusion outside metal tube and completely encloses metal tube.The utility model is compared with prior art, it removes original light splitting filter plate, it is changed to that spectro-film is arranged on the collimator to reach effect, while the length of collimation device capillary, packaged glass pipe is reduced, entire device entire length is enabled to have significant reduction, it is smaller than existing filter nearly 13mm, can preferably be adapted with fiber amplifier.
Description
Technical field
The utility model is related to a kind of fiber instruments, are a kind of filters coupling two optical fiber more specifically
Wave plate formula fiber coupler.
Background technology
In Optical Communication Market, the miniaturization of optic communication device is integrated to have become a kind of trend, and this trend exists
It is particularly evident on this device of fiber amplifier.Fiber amplifier size becomes smaller same to the size of matched optical fibre device
Propose higher requirement.For filtering chip fiber coupler, its minimum dimension can accomplish diameter 3.2mm at this stage, long
28mm is spent, for the fiber amplifier that increasingly size becomes smaller, size or some are bigger than normal now further contracts there is an urgent need for a kind of
Subtract the brand new of its size.
Invention content
The purpose of this utility model is to provide a kind of filtering chip fiber coupler of brand new, the rulers of the coupler
Very little further diminution, and coupling effect is not substantially change.
The utility model is realized using following technological means：A kind of filtering chip fiber coupler, including outer layer
The packaged glass pipe of encapsulation is arranged in metal tube in metal tube, and two groups of collimators are arranged in the both ends of packaged glass pipe, and two groups accurate
Straight device is separately connected the optical fiber of incidence end and the optical fiber of exit end, and the collimator is by collimation lens and welding on collimation lens
Optical fiber composition, setting light splitting filter plate, the optical fiber joint end of collimator stretch out on the inside of the collimator of incidence end optical fiber connection
Packaged glass pipe both sides, in metal tube filler is arranged is filled remaining space in metal tube and protruding metal tube
Outside formed a protrusion metal tube is completely enclosed
The incidence end is inputted using double optical fiber, and exit end is exported using single fiber, and the length of collimator is in 3-3.5mm
Between.
Gap between two groups of collimators is between 0.3-0.5mm, and the length of packaged glass pipe is 5mm, and collimator is stretched out
Packaged glass pipe both ends 1-2mm is encapsulated, the metal tube is stainless steel tube, caliber 3.1mm.
Compared with prior art, it removes original light splitting filter plate, it is changed to set on the collimator
Spectro-film is set to reach effect, while the length of collimation device and packaged glass pipe is reduced, and entire device is enabled integrally to grow
Degree has a significant reduction, and smaller than existing filter nearly 16mm can be preferably adapted with fiber amplifier.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Wherein 1- metal tubes, 2- packaged glass pipe, 3- collimators, 4- optical fiber, 5- spectro-films, 6- collimation lenses, 7- outgoing
Optical fiber, 8- fillers.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings of the specification：
The utility model is related to a kind of couplers of optical fiber, are a kind of fiber couplers of built-in filter plate specifically.
Coupler described in the utility model includes metal tube 1, and in general, metal tube 1 is made of antirust material, preferably stainless steel
The packaged glass pipe 2 of encapsulation is arranged in pipe in metal tube 1, and at the both ends of packaged glass pipe 2, a collimator 3 is respectively arranged,
The connection optical fiber of two collimators 3 respectively, optical fiber are specifically divided into incident optical 4 and the output optical fiber 7, at 4 place of incident optical
Spectro-film 5 is set on the inside of collimator, and spectro-film 5 can be in contact with the end face of incident optical 4, and spectro-film 5 also can be with incident optical
There are gap, gap will not generate tremendous influence within 2mm to actual optical signal transmission effect for 4 end face.
Further, the collimator 5 is directly made with 6 welding of collimation lens of optical fiber, in this way can be maximum
Reduce the length of collimator, the length for the collimator that originally technique is worked it out is 8mm, and collimator 5 contracts after using new technique instead
Short is 3.5mm.It complies fully with design requirement.
Further, the side of packaged glass pipe is stretched out in one end that the collimator 5 is connect with optical fiber, in other words,
The length of packaged glass pipe 2 reduces the consuming of material, and accurate to the greatest extent there is no collimator 5 is completely wrapped up
The position of straight device 5 is also fixed by good, and in the utility model, 2 length of packaged glass pipe is in 5mm, collimator 5
Length between 3.-3.5mm, the gap between two groups of collimators 5 between 0.3-0.5mm, collimator 5 stretch out packaged glass
2 both ends 1-2mm of pipe.
In the utility model, the incidence end is inputted using double optical fiber, and exit end is exported using single fiber, and incidence end makes
It can ensure that signal interference is preferably minimized value with double-fiber, two optical fiber of incidence end are directly entered collimator 5 after drawing and boring.
In the utility model, filler 8 is set at metal tube both ends, the filler 8 is by the remaining space in metal tube 1
It is all filled, and the filler 8 stretches out the structure of one dome-type in 1 both sides of metal tube and each self-forming, purpose
It is completely to block the nozzle of metal tube 1, to protect the element in metal tube 1 that will not damage to the greatest extent, filler 8 is same
Optical fiber is carried out portion envelops by sample, is avoided optical fiber and is fractureed, and the filler 8 is flexible material.
Claims (4)
1. a kind of filtering chip fiber coupler, includes the metal tube of outer layer, the packaged glass of encapsulation is set in metal tube
Two groups of collimators are arranged in the both ends of pipe, packaged glass pipe, and two groups of collimators are separately connected the optical fiber of incidence end and the light of exit end
It is fine, it is characterised in that：The collimator is made of collimation lens and optical fiber of the welding on collimation lens, is connected in incidence end optical fiber
Setting light splitting filter plate on the inside of the collimator connect, the optical fiber joint end of collimator stretches out packaged glass pipe both sides, in metal tube
Be arranged filler by remaining space in metal tube filled and the outside of protruding metal tube formed a protrusion will be golden
It is completely enclosed to belong to pipe.
2. filtering chip fiber coupler according to claim 1, it is characterised in that：The incidence end is using double optical fiber
Input, exit end are exported using single fiber, and the length of collimator is between 3-3.5mm.
3. filtering chip fiber coupler according to claim 1, it is characterised in that：Gap between two groups of collimators exists
Between 0.3-0.5mm, the length of packaged glass pipe is 5mm, and collimator stretches out encapsulation packaged glass pipe both ends 1-2mm.
4. filtering chip fiber coupler according to claim 1, it is characterised in that：The metal tube is stainless steel tube,
Caliber 3.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721647554.6U CN207704071U (en) | 2017-12-01 | 2017-12-01 | Filter chip fiber coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721647554.6U CN207704071U (en) | 2017-12-01 | 2017-12-01 | Filter chip fiber coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207704071U true CN207704071U (en) | 2018-08-07 |
Family
ID=63024531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721647554.6U Active CN207704071U (en) | 2017-12-01 | 2017-12-01 | Filter chip fiber coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207704071U (en) |
-
2017
- 2017-12-01 CN CN201721647554.6U patent/CN207704071U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |