CN207623567U - A kind of high isolation wavelength-division multiplexer - Google Patents
A kind of high isolation wavelength-division multiplexer Download PDFInfo
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- CN207623567U CN207623567U CN201721873767.0U CN201721873767U CN207623567U CN 207623567 U CN207623567 U CN 207623567U CN 201721873767 U CN201721873767 U CN 201721873767U CN 207623567 U CN207623567 U CN 207623567U
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- optical collimator
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- transmission
- division multiplexer
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Abstract
The utility model discloses a kind of high isolation wavelength-division multiplexers, it includes incident optical collimator, reflect optical collimator, transmit optical collimator and four lens, incident optical collimator, reflect optical collimator, transmission optical collimator and four lens are arranged in shell, four lens are respectively the first lens, second lens, the third lens and the 4th lens, the front side of first lens is equipped with one layer of first reflection plated film, the front side of second lens is equipped with one layer of second reflection plated film, incident optical collimator and reflection optical collimator are arranged side by side, the rear side in reflection optical collimator is arranged in 4th lens, the rear side in the 4th lens is arranged in first lens, first lens are arranged side by side with the third lens, the rear side in the first lens is arranged in second lens, the rear side in two lens is arranged in transmission optical collimator.The advantages of the utility model：It is reflected and is isolated using both ends, isolation improves, and ensures that signal is not disturbed；The light of different wave length can be exported respectively.
Description
Technical field
The utility model is related to a kind of high isolation wavelength-division multiplexers, belong to technical field of optical fiber communication.
Background technology
Since optical-fibre communications is quickly grown, with the promotion of transmission capacity requirements（Such as transmit video image）, directly want
Seek the maximum width for utilizing optical fiber.Optical wavelength division multiplexing（Abbreviation WDM）Technology be the light modulating signal of growing each road Different lightwave by
It transmits, the multi-wavelength light modulated signal of simultaneous transmission in same optical fiber can be also decomposed into a in optical wavelength multiplexing a to optical fiber
Other wavelength exports respectively, is to improve one of communication capacity most efficient solution, therefore obtained in current optical communication network
It is widely applied.But transmitted there are many wavelength inside an optical fiber, sufficiently high isolation is needed between each other, otherwise
Signal can interfere.With fiber-to-the-home development, from EPON to GPON, then XGPON is arrived, increase unification of three nets again recently
Upgrade, the signal in optical-fiber network, from 1310nm and 1490nm, increases 1270nm and 1577nm, and increase 1550nm and 1610nm
Cable TV network optical signal.Upgrading for earlier network, with greater need for consider sufficiently high reflection isolation degree and transmission every
From degree, network original function otherwise will be caused to fail.And the reflection isolation degree Shortcomings of current wavelength division multiplexer, it is easy to
Interference signal.
Invention content
The technical problems to be solved in the utility model is to provide a kind of high isolation wavelength-division multiplexer, the wavelength-division multiplex
Device is improved using both ends reflection isolation, isolation, ensures that signal is not disturbed.
The utility model is realized by following proposal：A kind of high isolation wavelength-division multiplexer comprising incident optical collimator,
Reflect optical collimator, transmission optical collimator and four lens, it is the incidence optical collimator, the reflection optical collimator, described
It penetrates optical collimator and four lens is arranged in shell, four lens are respectively the first lens, the second lens,
The front side of three lens and the 4th lens, first lens is equipped with one layer of first reflection plated film, is set on front side of second lens
There are one layer of second reflection plated film, the incidence optical collimator and the reflection optical collimator to be arranged side by side, the 4th lens are set
The rear side in the reflection optical collimator is set, the rear side in the 4th lens, first lens are arranged in first lens
It is arranged side by side with the third lens, the rear side in first lens, the transmission optical collimator is arranged in second lens
Rear side in two lens is set.
Incident light reaches first lens after the incident optical collimator, due to the difference of lambda1-wavelength, portion
Excessively described first lens of spectral transmission reach second lens, and another part light is reflected to the 4th lens, through transmission
Afterwards, the reflection optical collimator is passed through, then by optical fiber output.
The light of second lens is reached, then excessively described second lens of a part of light transmission pass through transmission optical collimator,
By optical fiber output, another part light is reflected to the third lens, and the 4th lens are transmitted to through the third lens, warp
After the 4th lens transmission, the reflection optical collimator is passed through, then by optical fiber output.
The third lens front and rear sides are inclined-plane.
The front side of first lens is to face directly, and rear side is inclined-plane.
The front and rear sides of second lens and the 4th lens are to face directly.
The beneficial effects of the utility model are：
1, a kind of high isolation wavelength-division multiplexer of the utility model is improved using both ends reflection isolation, isolation, ensures letter
It number is not disturbed；
2, a kind of high isolation wavelength-division multiplexer of the utility model can export the light of different wave length respectively.
Description of the drawings
Fig. 1 is a kind of index path of high isolation wavelength-division multiplexer of the utility model.
In figure：1 is incident optical collimator, and 2 be reflection optical collimator, and 3 be transmission optical collimator, and 4 be the first lens, and 5 are
Second lens, 6 be the third lens, and 7 be the 4th lens, and 8 be the first reflection plated film, and 9 be the second reflection plated film.
Specific implementation mode
The utility model is further illustrated with reference to Fig. 1, but scope of protection of the utility model does not limit to the content.
Wherein identical parts are presented with like reference characters.It should be noted that word used in the following description
Language "front", "rear", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to court
To or far from geometric center of specific component direction, and attached drawing is all made of very simplified form and uses non-accurate ratio
Rate, only to purpose that is convenient, lucidly aiding in illustrating the utility model embodiment.
For clarity, not describing whole features of practical embodiments, in the following description, it is not described in detail well known function
And structure, because they can make the utility model chaotic due to unnecessary details, it will be understood that in any practical embodiments
Exploitation in, it is necessary to make a large amount of implementation details to realize the specific objective of developer, such as according to related system or related quotient
The limitation of industry changes into another embodiment by one embodiment, additionally, it should think this development may be it is complicated and
It is time-consuming, but it is only to those skilled in the art routine work.
A kind of high isolation wavelength-division multiplexer comprising incident optical collimator 1, reflection optical collimator 2, transmission optical collimator
3 and four lens, incident optical collimator 1, reflection optical collimator 2, transmission optical collimator 3 and four lens are arranged at shell
Interior, four lens are respectively the first lens 4, the second lens 5, the third lens 6 and the 4th lens 7, and 6 front and rear sides of the third lens are
Inclined-plane, the front sides of the first lens 4 are to face directly, and rear side is inclined-plane, and the front and rear sides of the second lens 5 and the 4th lens 7 are to face directly,
The front side of first lens 4 is equipped with one layer of first reflection plated film 8, and the front side of the second lens 5 is equipped with one layer of second reflection plated film 9, enters
It penetrates optical collimator 1 and reflection optical collimator 2 is arranged side by side, the rear side in reflection optical collimator 2 is arranged in the 4th lens 7, and first thoroughly
The rear side in the 4th lens 7 is arranged in mirror 4, and the first lens 4 are arranged side by side with the third lens 6, and the second lens 5 are arranged in the first lens
The rear side in two lens 5 is arranged in 4 rear side, transmission optical collimator 3.
Incident light reaches the first lens 4 after incident optical collimator 1, and due to the difference of lambda1-wavelength, part light is saturating
It penetrated the first lens 4 and reaches the second lens 5, another part light is reflected to the 4th lens 7, after transmission, passes through reflected light accurate
Straight device 2, then by optical fiber output.
The light of the second lens 5 is reached, a part of light transmission crosses the second lens 5, then by transmission optical collimator 3, by light
Fibre output, another part light are reflected to the third lens 6, the 4th lens 7 are transmitted to through the third lens 6, are transmitted through the 4th lens 7
Afterwards, reflection optical collimator 2 is passed through, then by optical fiber output.
Although having done more detailed elaboration to the technical solution of the utility model and having enumerated, it should be understood that for
For those skilled in the art, modification is made to above-described embodiment or uses equivalent alternative solution, this skill to this field
Be for art personnel it is clear that on the basis of without departing from the spirit of the present invention these modifications or improvements, belong to
In the range of the requires of the utility model protection.
Claims (6)
1. a kind of high isolation wavelength-division multiplexer, it is characterised in that：It includes incident optical collimator（1）, reflection optical collimator
（2）, transmission optical collimator（3）With four lens, the incidence optical collimator（1）, the reflection optical collimator（2）, it is described
Penetrate optical collimator（3）It is arranged in shell with four lens, four lens are respectively the first lens（4）, second
Lens（5）, the third lens（6）With the 4th lens（7）, first lens（4）Front side be equipped with one layer first reflection plated film
（8）, second lens（5）Front side be equipped with one layer second reflection plated film（9）, the incidence optical collimator（1）With it is described anti-
Penetrate optical collimator（2）It is arranged side by side, the 4th lens（7）It is arranged in the reflection optical collimator（2）Rear side, described first
Lens（4）It is arranged in the 4th lens（7）Rear side, first lens（4）With the third lens（6）It is arranged side by side,
Second lens（5）It is arranged in first lens（4）Rear side, the transmission optical collimator（3）Setting is saturating described two
Mirror（5）Rear side.
2. a kind of high isolation wavelength-division multiplexer according to claim 1, it is characterised in that：Incident light passes through the incidence
Optical collimator（1）After reach first lens（4）, due to the difference of lambda1-wavelength, some light transmission excessively described first is saturating
Mirror（4）Reach second lens（5）, another part light is reflected to the 4th lens（7）, after transmission, pass through described
Reflect optical collimator（2）, then by optical fiber output.
3. a kind of high isolation wavelength-division multiplexer according to claim 2, it is characterised in that：Reach second lens
（5）Light, excessively described second lens of a part of light transmission（5）, then by transmission optical collimator（3）, another by optical fiber output
Part light is reflected to the third lens（6）, through the third lens（6）It is transmitted to the 4th lens（7）, through described
Four lens（7）After transmission, the reflection optical collimator is passed through（2）, then by optical fiber output.
4. a kind of high isolation wavelength-division multiplexer according to claim 1, it is characterised in that：The third lens（6）Before
Both sides are inclined-plane afterwards.
5. a kind of high isolation wavelength-division multiplexer according to claim 1, it is characterised in that：First lens（4）'s
Front side is to face directly, and rear side is inclined-plane.
6. a kind of high isolation wavelength-division multiplexer according to claim 1, it is characterised in that：Second lens（5）With
4th lens（7）Front and rear sides be to face directly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721873767.0U CN207623567U (en) | 2017-12-28 | 2017-12-28 | A kind of high isolation wavelength-division multiplexer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721873767.0U CN207623567U (en) | 2017-12-28 | 2017-12-28 | A kind of high isolation wavelength-division multiplexer |
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| Publication Number | Publication Date |
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| CN207623567U true CN207623567U (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721873767.0U Active CN207623567U (en) | 2017-12-28 | 2017-12-28 | A kind of high isolation wavelength-division multiplexer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748497A (en) * | 2019-10-31 | 2021-05-04 | 福州高意光学有限公司 | Optical system capable of realizing beam combination and beam splitting of multi-wavelength laser |
-
2017
- 2017-12-28 CN CN201721873767.0U patent/CN207623567U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748497A (en) * | 2019-10-31 | 2021-05-04 | 福州高意光学有限公司 | Optical system capable of realizing beam combination and beam splitting of multi-wavelength laser |
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