CN206020718U - Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component - Google Patents
Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component Download PDFInfo
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- CN206020718U CN206020718U CN201620672079.7U CN201620672079U CN206020718U CN 206020718 U CN206020718 U CN 206020718U CN 201620672079 U CN201620672079 U CN 201620672079U CN 206020718 U CN206020718 U CN 206020718U
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- collecting lenses
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Abstract
The utility model discloses a kind of four port hybrid type of low-loss, two wave-length division multiplexing optical passive component, including collecting lenses, the left and right sides of the collecting lenses respectively arranges one group with the collecting lenses coaxial line：WDM optical filters, GRIN Lens and double optical fiber head；It is located at the same side of collecting lenses：The WDM optical filters, GRIN Lens and double optical fiber head are arranged along the direction order away from collecting lenses.This utility model is additionally arranged beam convergence lens in one end of isolator core, can revise the angle of divergence, it is to avoid the light beam of one of which wavelength has the technical problem of coupling mismatch, can realize that insertion loss IL is transferred to minimum simultaneously for wavelength differs larger two-beam.
Description
Technical field
This utility model is related to a kind of optical passive component, more particularly to a kind of four port hybrid type of low-loss, two wave-length division
Multiplexing optical passive component, belongs to optical fiber communication equipment technical field.
Background technology
Optical passive component is the important component part of optical fiber communication equipment, and other fiber optic applications fields are indispensable
Components and parts.There is high return loss, low insertion loss, high reliability, stability, mechanical endurance and corrosion resistance, be easy to grasp
The features such as making, is widely used in long haul communication, Local Area Network and fiber to the home, transmission of video, optical fiber sensing etc..
Optical passive component in the optical path will consumed energy, insertion loss is its main performance index.Right in prior art
Deficiency is stated in the presence of two wave-length division of the light beam multiplexing optical passive component that wavelength differs larger：It is respectively with lambda1-wavelength
As a example by 980nm, 1550nm, when the reflection of 980nm wavelength light beams is mixed up, the insertion loss IL of 980nm wavelength light beams is made to be transferred to minimum
When, for 1550nm wavelength light beam transmissions, there is the angle of divergence in 1550nm wavelength light beams, and 1550nm wave bands there is coupling mismatch,
Cause the insertion loss of 1550nm wave bands bigger than normal.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of four port hybrid type two of low-loss
Wave-length division is multiplexed optical passive component, and solving two wave-length divisions multiplexing optical passive component in prior art cannot make two wavelength light beams
Insertion loss be simultaneously transferred to the technical problem of minimum.
For solving deficiency of the prior art, the technical scheme adopted by this utility model is：Four port hybrid of low-loss
Two wave-length division of type is multiplexed optical passive component, including collecting lenses, the left and right sides of the collecting lenses and the collecting lenses
Coaxial line respectively arranges one group：WDM optical filters, GRIN Lens and double optical fiber head；The WDM for being located at the same side of collecting lenses filters
Piece, GRIN Lens and double optical fiber head, along the direction away from collecting lenses according to WDM optical filters, GRIN Lens, double optical fiber head
Order set gradually.
The collecting lenses are one side convex lenss.
The plane of the one side convex lenss is provided with isolator core, the plane of the one side convex lenss and the magnetic of isolator core
Ring is fixedly connected.
In glass tubing, the collecting lenses are fixedly connected the optical passive component with the inwall of glass tubing.
Compared with prior art, the beneficial effect reached by this utility model is：It is additionally arranged beam convergence lens, Neng Gouxiu
The positive angle of divergence, it is to avoid the light beam of one of which wavelength has the technical problem of coupling mismatch, for wavelength differs two larger beams
Light can realize that insertion loss IL is transferred to minimum simultaneously.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is optical schematic diagram of the present utility model.
In figure：1st, isolator core；2nd, WMD optical filters；3rd, GRIN Lens；4th, double optical fiber head；5th, collecting lenses.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.Following examples are only used for this is clearly described
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
As shown in figure 1, be structural representation of the present utility model, including be coaxially set：One isolator core, one
Collecting lenses, two WDM optical filters, two GRIN Lens and two double optical fiber heads.WDM optical filters, GRIN Lens and double
Optical fiber head is respectively arranged on the left side and the right side one in isolator core.It is located at the same side of isolator core：WDM optical filters are located at autohemagglutination
Focus lens near the side of isolator core, the double optical fiber head opposite side located at GRIN Lens relative with WDM optical filters, from
Gap is left between condenser lenses and double optical fiber head, is easy to the insertion loss for adjusting reflection wavelength.
Isolator core includes magnet ring and the isolating device in magnet ring, and collecting lenses are from circular one side convex lenss, single
The diameter of face convex lenss is identical with the external diameter of magnet ring.The plane of one side convex lenss is arranged towards magnet ring, and is fixedly connected with magnet ring；
One side convex lenss convex surface facing WDM optical filters arrange.
For one side convex lenss, meetWherein f represents the focal length of one side convex lenss；N is represented
The refractive index of one side convex lenss；R1Represent the distance of the end face of fiber exit beam to one side convex lenss photocentre；R2Represent as to list
The distance of face convex lenss photocentre.
Effect of the isolator core in this utility model be：Allow transmission peak wavelength one-way transmission, inessential scene, it is also possible to
It is not provided with, as shown in Fig. 2 being the optical schematic diagram that this utility model is not provided with isolator core, the light beam dotted line in figure is exactly light
The path that beam is propagated.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, some improvement and deformation can also be made, these change
Enter and deform also to should be regarded as protection domain of the present utility model.
Claims (4)
1. four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component, it is characterised in that including collecting lenses, described
The left and right sides of collecting lenses respectively arranges one group with the collecting lenses coaxial line：WDM optical filters, GRIN Lens and double optical fiber
Head；WDM optical filters, GRIN Lens and the double optical fiber head of the same side of collecting lenses is located at, along the direction away from collecting lenses
Order according to WDM optical filters, GRIN Lens, double optical fiber head sets gradually.
2. four port hybrid type of low-loss according to claim 1, two wave-length division is multiplexed optical passive component, and its feature exists
In the collecting lenses are one side convex lenss.
3. four port hybrid type of low-loss according to claim 2, two wave-length division is multiplexed optical passive component, and its feature exists
In the plane of the one side convex lenss is provided with isolator core, and the plane of the one side convex lenss is solid with the magnet ring of isolator core
Fixed connection.
4. four port hybrid type of low-loss, two wave-length division according to claim 1 or 3 is multiplexed optical passive component, its feature
It is, in glass tubing, the collecting lenses are fixedly connected the optical passive component with the inwall of glass tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620672079.7U CN206020718U (en) | 2016-06-30 | 2016-06-30 | Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620672079.7U CN206020718U (en) | 2016-06-30 | 2016-06-30 | Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020718U true CN206020718U (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620672079.7U Active CN206020718U (en) | 2016-06-30 | 2016-06-30 | Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component |
Country Status (1)
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| CN (1) | CN206020718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938223A (en) * | 2016-06-30 | 2016-09-14 | 苏州伽蓝致远电子科技股份有限公司 | Low-loss four-port hybrid two-wavelength wavelength division multiplexing optical passive device |
| CN109254354A (en) * | 2017-07-13 | 2019-01-22 | 福州高意通讯有限公司 | A kind of four port wavelength division multiplex devices |
-
2016
- 2016-06-30 CN CN201620672079.7U patent/CN206020718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938223A (en) * | 2016-06-30 | 2016-09-14 | 苏州伽蓝致远电子科技股份有限公司 | Low-loss four-port hybrid two-wavelength wavelength division multiplexing optical passive device |
| CN109254354A (en) * | 2017-07-13 | 2019-01-22 | 福州高意通讯有限公司 | A kind of four port wavelength division multiplex devices |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |