CN206362971U - A kind of fibre optic isolater - Google Patents
A kind of fibre optic isolater Download PDFInfo
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- CN206362971U CN206362971U CN201621437447.6U CN201621437447U CN206362971U CN 206362971 U CN206362971 U CN 206362971U CN 201621437447 U CN201621437447 U CN 201621437447U CN 206362971 U CN206362971 U CN 206362971U
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Abstract
The utility model provides a kind of fibre optic isolater, including glass-encapsulated pipe, the first tail optical fiber capillary, the second tail optical fiber capillary, the first lens, the second lens, optically-active component；Optically-active component, the first lens and the second lens are installed in glass-encapsulated pipe, and the first lens and the second lens are located at optically-active component both sides and fixation；First tail optical fiber capillary stretches into the first openend of glass-encapsulated pipe and fixation, and the second tail optical fiber capillary stretches into the second openend of glass-encapsulated pipe and fixation.The utility model is reduced in structure after conventional collimator glass tube, reduce collimater glass tube and intercapillary glue-line, improve device anti-steam permeance property, improve air-tightness, reduce because of the structural stress that medium thermal coefficient of expansion is different, gage distortion is brought, improve device resistance to overturning, reliability.
Description
Technical field
The utility model is related to a kind of fibre optic isolater, and in particular to a kind of inexpensive new construction mini optical fibre is isolated online
Device, belongs to fiber optic communication field.
Background technology
The online isolator of mini optical fibre, generally by two optical fiber collimators, Faraday core, the full adhesive process of glass tube
Encapsulation is formed.Shown in Fig. 1 is the existing online isolator of normal miniature optical fiber, uses the external diameter 1.0mm He of tail optical fiber capillary 11
Lens 12, are fitted into first optical fiber collimator of making in external diameter 1.8mm glass tube 13, use external diameter 1.0mm tail optical fiber capillary
Pipe 32 and lens 31, are fitted into second optical fiber collimator of making in external diameter 1.8mm glass tube 33, and two collimater costs are high.
Inserted using light pass surface for 0.68mm × 0.68mm crystal prism 22, crystal prism 24 and faraday rotator 23 in magnet ring 21
Faraday core 2 is made, optically-active core cost is high.Encapsulation is to stretch the external diameter 1.8mm glass tubes 13 and glass tube 33 of collimater
Enter the endoporus of covering glass tube 4, then applying glue is fixed.
Utility model content
Technical problem to be solved in the utility model is：A kind of new construction of the fibre optic isolater of simplification is provided, reduced
Manufacturing cost, improves product quality.
In order to solve the above-mentioned technical problem, the utility model proposes a kind of new construction of mini optical fibre isolator, pass through
Micro-isolator is made using the optically-active core of the collimater of low cost, low cost, the material cost of micro-isolator is reduced, produces
Product are simple in construction, it is easy to assemble.Concrete technical scheme is as follows：
A kind of fibre optic isolater, including glass-encapsulated pipe, the first tail optical fiber capillary, the second tail optical fiber capillary, the first lens,
Second lens, optically-active component；Optically-active component, the first lens and the second lens are installed in glass-encapsulated pipe, and the first lens
It is located at optically-active component both sides and fixation with the second lens；First tail optical fiber capillary stretches into the first openend of glass-encapsulated pipe and solid
Fixed, the second tail optical fiber capillary stretches into the second openend of glass-encapsulated pipe and fixation.
Further, the outer wall of the first tail optical fiber capillary is fixed on to the first opening of glass-encapsulated pipe with epoxide-resin glue
Inwall is held, the outer wall of the second tail optical fiber capillary is fixed on to the second openend inwall of glass-encapsulated pipe with epoxide-resin glue.
Further, optically-active component includes crystal optically-active core and magnet ring, and crystal optically-active core is arranged on inside magnet ring；First is saturating
Mirror stretches into the first openend of magnet ring and fixation, and the second lens stretch into the second openend of magnet ring and fixation.
Further, the first lens and the second lens are the lens including planar ends and sphere end, the ball of the first lens
The first openend of magnet ring is stretched at face end, and the sphere end of the second lens stretches into the second openend of magnet ring.
Further, crystal optically-active core is made up of faraday rotator, first crystal prism and the second crystal prism, and first
Crystal prism and the second crystal prism are located at the both sides of faraday rotator respectively.
Further, the light pass surface between first crystal prism, the second crystal prism and faraday rotator is no glue.
Further, the light pass surface between first crystal prism, the second crystal prism and faraday rotator is to use glue glue
Close.
Further, the light pass surface between first crystal prism, the second crystal prism and faraday rotator be 0.5mm ×
0.5mm。
Further, the external diameter of the first tail optical fiber capillary and the second tail optical fiber capillary is 1.8mm.
The collimation optical beam spot diameter that above-mentioned fibre optic isolater is applied to communication wavelength is less than 0.3mm.
The beneficial effects of the utility model：The utility model is isolated using inexpensive collimater and inexpensive optically-active simultaneously
Core, device volume reduces, and integrated cost declines 30%.The utility model has been given up in structure after conventional collimator glass tube,
Collimater glass tube and intercapillary glue-line are reduced, device anti-steam permeance property is improved, air-tightness is improved, reduced
Because of the structural stress that medium thermal coefficient of expansion is different, gage distortion is brought, improve device resistance to overturning, reliability.
Brief description of the drawings
Fig. 1 is the structural representation of fibre optic isolater in the prior art；
Fig. 2 is the structural representation of the fibre optic isolater in one preferred embodiment of the utility model.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.It should be noted that, the utility model accompanying drawing is using simplified form
And non-accurately ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.
Fibre optic isolater of the present utility model includes low-cost optical fiber collimater, inexpensive optically-active core, glass-encapsulated pipe, low
Cost optical fiber collimater eliminates external diameter 1.8mm conventional collimator glass tube, by external diameter 1.8mm tail optical fiber capillary and lens
Composition, inexpensive optically-active core inner is made up with light pass surface of 0.5mm × 0.5mm crystal prism and faraday rotator, is sealed
It is that the external diameter 1.8mm tail optical fiber capillaries of collimater are stretched into covering glass pipe orifice and then are glued fixed in dress.
Shown in Fig. 2 is a preferred embodiment of the utility model fibre optic isolater, and fibre optic isolater mainly includes glass
Glass package tube 4, tail optical fiber capillary 1, tail optical fiber capillary 3, lens 12, lens 31, optically-active component 2.Optically-active component 2, the and of lens 12
Lens 31 are all in glass-encapsulated pipe 4, and lens 12 and lens 31 are located at the both sides of optically-active component 2 and fixation.Caudal cilium
Tubule 1 stretches into the first openend of glass-encapsulated pipe 4 and fixation, and tail optical fiber capillary 3 stretches into the second openend of glass-encapsulated pipe 4
And it is fixed.The outer wall of tail optical fiber capillary 1 is fixed on to the first openend inwall of glass-encapsulated pipe 4 with epoxide-resin glue, ring is used
The outer wall of tail optical fiber capillary 3 is fixed on the second openend inwall of glass-encapsulated pipe 4 by oxygen resin glue.Tail optical fiber capillary 1 and tail
The external diameter of cilium tubule 3 is 1.8mm.
Optically-active component 2 includes crystal optically-active core and magnet ring 21, and crystal optically-active core is arranged on inside magnet ring 21.Crystal optically-active core
It is made up of faraday rotator 23, angle of wedge crystal prism 22 and angle of wedge crystal prism 24, angle of wedge crystal prism 22 and angle of wedge crystal
Prism 24 is located at the both sides of faraday rotator 23 respectively.Angle of wedge crystal prism 22 and angle of wedge crystal prism 24 respectively with faraday
The light pass surface of optical rotation plate 23 is no glue or with glue glued adhesion.Light pass surface size is 0.5mm × 0.5mm.
Lens 12 stretch into the first openend of magnet ring 21 and fixation, and lens 31 stretch into the second openend of magnet ring 21 and solid
It is fixed.Lens 12 and lens 31 are the lens including planar ends and sphere end, and respective sphere end stretches into the openend of magnet ring.
The difference of the utility model and conventional structure is as follows：
First, the prefabricated collimater of tradition tail optical fiber capillary 11, lens 12 and glass tube 13 as shown in figure 1, be made up of.This
Utility model is without using prefabricated collimater, but " collimater " that tail optical fiber capillary 1 and lens 12 are broken up the family.Assembling process：
The magnet ring 21 of isolated core is slightly long, and lens 12 and lens 31 are stretched into magnet ring 21, fixed with glue, formation isolated core+bis-
The assembly of lens.Assembly is placed in the center of glass-encapsulated pipe 4, and glue is fixed.Then tail optical fiber capillary 1 and tail optical fiber capillary 3 are stretched
Enter in glass-encapsulated pipe 4, after the completion of light modulation, tail optical fiber capillary 1 and glass-encapsulated pipe 4 are fixed with glue, and tail optical fiber is fixed with glue
Capillary 3 and glass-encapsulated pipe 4.Spatially tail optical fiber capillary 1 is broken up the family with lens 12, and tail optical fiber capillary 3 is broken up the family with lens 31.Letter
Yan Zhi, using glass-encapsulated pipe 4 and optically-active component 2, eliminates glass tube 13 and glass tube 33 in Fig. 1.
Advantage of this is that：
1st, 33 two parts of the collimater glass tubes 13 of 1.8 internal diameter φ of external diameter φ 1.0 and collimater glass tube have been lacked, have saved into
This.
2nd, the tail optical fiber capillary 1 and tail optical fiber capillary 3 used, it is thin without conventional external diameter φ 1.0, and with cheap external diameter
φ 1.8 is thick, cost-saving.
2nd, the isolated core that the utility model is used, angle of wedge crystal prism 22 therein, angle of wedge crystal prism 24 and farad
Optical rotation plate 23, section is 0.5mm × 0.5mm, compared to conventional 0.68mm × 0.68mm, the crystal volume in the utility model
It is small, cost-saving.
3rd, while using inexpensive collimater and inexpensive optically-active isolated core, device synthesis cost declines 30%.
4th, the utility model is sealed with tail optical fiber capillary 1 thick φ 1.8, tail optical fiber capillary 3 and the direct glue of glass-encapsulated pipe 4,
Make between device exterior and inside, reduce between the conventional tail optical fiber capillaries 11 of φ 1.0 and collimater glass tube 13, routine φ
Glue-line passage between 1.0 tail optical fiber capillaries 32 and collimater glass tube 33, improves device anti-steam permeance property, air-tightness
Improve.
5th, the utility model is sealed with tail optical fiber capillary 1 thick φ 1.8, tail optical fiber capillary 3 and the direct glue of glass-encapsulated pipe 4,
The common two layer medium of glue-line in Fig. 1 between glass tube 13 and glass tube 13 and tail optical fiber capillary 11 is reduced, glass tube is reduced
The common two layer medium of glue-line between 33 and glass tube 33 and tail optical fiber capillary 32, is reduced because of thermal coefficient of expansion difference, thickness not
The even structural stress brought, improves device resistance to overturning, reliability.
As selectable alternative solution, the utility model, can behind the small-sized crystals using 0.5 × 0.5mm sections
So that magnet ring is made into external diameter 1.5mm, external diameter 1.5mm is made in tail optical fiber capillary, and external diameter 2.4mm internal diameters are made in outer glass-encapsulated pipe
1.5mm, the entire outer diameter of such device drops to 2.4mm from 2.8mm, and volume further reduces.
The collimation optical beam spot diameter that the fibre optic isolater that the utility model is provided is applied to communication wavelength is less than 0.3mm.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations without creative work according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of fibre optic isolater, it is characterised in that including glass-encapsulated pipe, the first tail optical fiber capillary, the second tail optical fiber capillary,
First lens, the second lens, optically-active component；The optically-active component, first lens and second lens are installed in institute
State in glass-encapsulated pipe, and first lens and second lens are located at the optically-active component both sides and fixation；Described
One tail optical fiber capillary stretches into the first openend of the glass-encapsulated pipe and fixation, and the second tail optical fiber capillary stretches into the glass
Second openend of glass package tube and fixation.
2. a kind of fibre optic isolater according to claim 1, it is characterised in that with epoxide-resin glue by first tail optical fiber
The outer wall of capillary is fixed on the first openend inwall of the glass-encapsulated pipe, with epoxide-resin glue by second caudal cilium
The outer wall of tubule is fixed on the second openend inwall of the glass-encapsulated pipe.
3. a kind of fibre optic isolater according to claim 1, it is characterised in that the optically-active component includes crystal optically-active core
And magnet ring, the crystal optically-active core is inside the magnet ring；First lens stretch into the first openend of the magnet ring
And it is fixed, second lens stretch into the second openend of the magnet ring and fixation.
4. a kind of fibre optic isolater according to claim 3, it is characterised in that first lens and second lens
It is the lens including planar ends and sphere end, the sphere end of first lens stretches into the first openend of the magnet ring, institute
The sphere end for stating the second lens stretches into the second openend of the magnet ring.
5. a kind of fibre optic isolater according to claim 3, it is characterised in that the crystal optically-active core is by Faraday
Piece, first crystal prism and the second crystal prism composition, the first crystal prism and second crystal prism are located at respectively
The both sides of the faraday rotator.
6. a kind of fibre optic isolater according to claim 5, it is characterised in that the first crystal prism, described second
Light pass surface between crystal prism and the faraday rotator is no glue.
7. a kind of fibre optic isolater according to claim 5, it is characterised in that the first crystal prism, described second
Light pass surface glue glued adhesion between crystal prism and the faraday rotator.
8. a kind of fibre optic isolater according to claim 5, it is characterised in that the first crystal prism, described second
Light pass surface size between crystal prism and the faraday rotator is 0.5mm × 0.5mm.
9. a kind of fibre optic isolater according to claim 1, it is characterised in that the first tail optical fiber capillary and described
The external diameter of two tail optical fiber capillaries is 1.8mm.
10. a kind of fibre optic isolater according to any one of claim 1 to 9, it is characterised in that the fibre optic isolater should
Collimation optical beam spot diameter for communication wavelength is less than 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621437447.6U CN206362971U (en) | 2016-12-26 | 2016-12-26 | A kind of fibre optic isolater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621437447.6U CN206362971U (en) | 2016-12-26 | 2016-12-26 | A kind of fibre optic isolater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362971U true CN206362971U (en) | 2017-07-28 |
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ID=59376322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621437447.6U Active CN206362971U (en) | 2016-12-26 | 2016-12-26 | A kind of fibre optic isolater |
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| Country | Link |
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| CN (1) | CN206362971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707414A (en) * | 2016-12-26 | 2017-05-24 | 上海伟钊光学科技股份有限公司 | Optical fiber isolator |
| CN115032745A (en) * | 2022-08-15 | 2022-09-09 | 光越科技(深圳)有限公司 | Online optical isolator |
-
2016
- 2016-12-26 CN CN201621437447.6U patent/CN206362971U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707414A (en) * | 2016-12-26 | 2017-05-24 | 上海伟钊光学科技股份有限公司 | Optical fiber isolator |
| CN106707414B (en) * | 2016-12-26 | 2024-01-19 | 上海毫米星光光学有限公司 | Optical fiber isolator |
| CN115032745A (en) * | 2022-08-15 | 2022-09-09 | 光越科技(深圳)有限公司 | Online optical isolator |
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