CN201194031Y - Adjustable light isolator - Google Patents
Adjustable light isolator Download PDFInfo
- Publication number
- CN201194031Y CN201194031Y CNU2008200933691U CN200820093369U CN201194031Y CN 201194031 Y CN201194031 Y CN 201194031Y CN U2008200933691 U CNU2008200933691 U CN U2008200933691U CN 200820093369 U CN200820093369 U CN 200820093369U CN 201194031 Y CN201194031 Y CN 201194031Y
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- CN
- China
- Prior art keywords
- wedge
- optoisolator
- faraday rotator
- cylinder
- optical
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an adjustable optical isolator, which comprises a pair of collimating components and an isolating core disposed in the center. In the isolating core, a first optical wedge, a Faraday rotator and a second optical wedge are disposed along the direction of optical transmission; the Faraday rotator is fixed in a magnetic tube; and the first optical wedge is pasted on a rotatable structural part. Adjusting the structural part can make the first optical wedge, the Faraday rotator and the second optical wedge in the most accurate position relation, and can achieve the best isolation. While, the adjustable optical isolator adopts a polarization film dispersion compensating gauge to solve the dispersion problem effectively.
Description
Technical field
The utility model is to improve the optoisolator of isolation about a kind of rotatable adjusting optical axis included angle.
Background technology
Optoisolator mainly is used in laser instrument and the optical communication system, and the transmission requirement to light in these systems is: for the light of forward transmitted wish can be in the process of transmission energy loss few more good more, and can stop backlight.So-called backlight generally is meant light in the process of transmission forward, and in the surface and the inner meeting generation reflection of each transport vehicle, these reflected energies cause the variation of light signal, and most importantly these reflected light can destroy the stability of laser system.
Traditional optoisolator is seen shown in Figure 1, it comprises incident optical 1, first collimating apparatus 2, light isolated core 3, second collimating apparatus 4 and outgoing optical fiber 5 along the setting of optical transmission direction order, and light isolated core 3 mainly is made up of two wedges (birefringece crystal) and therebetween Faraday rotator.This optoisolator except for forward light with low-loss transmission, outside backlight isolated, the another one characteristics were that this chromatic dispersion can cause the distortion of light signal because different light interactions can cause chromatic dispersion.
Because the wedge optical axis included angle of above-mentioned optoisolator is non-adjustable, therefore in assembling process, two wedges and Faraday rotator are difficult to reach an accurate cooperation position, and this makes that isolation is lower in the bandwidth of this optoisolator.
Chinese patent CN01209673.3 and CN01269401.0 have all disclosed a kind of adjustable optoisolator, from the instructions of these two patents and accompanying drawing, find out easily, second wedge is installed in a ring inside, adjust the optical axis angle of second wedge and Faraday rotator, first wedge by rotating this ring, to obtain best isolation.Different is, second wedge among the patent CN01269401.0 is installed in the ring with the part of second collimating apparatus, and first wedge and Faraday rotator are installed in the magnetic tube; And first wedge among the patent CN01209673.3, Faraday rotator, second wedge all are loaded on magnetic tube inside.In actual production process, these two described optoisolators of patent are all very inconvenient when assembling, are easy to generate rigging error or have the material error, influence optical axis and regulate efficient.
Summary of the invention
The adjustable optical isolator of a kind of novel structure of the utility model has overcome above-mentioned defective, first wedge of this optoisolator is affixed on the cylinder, easy to assembly, adjust this cylinder by rotation and make first wedge, Faraday rotator and second wedge reach position relation the most accurately, to obtain preferable isolation.
This utility model is by the following technical solutions: a kind of adjustable optical isolator, comprise the pair of alignment parts and be positioned at its middle isolated core, this isolated core inside is provided with first wedge, Faraday rotator and second wedge along optical transmission direction, this Faraday rotator is fixed in the magnetic tube, it is characterized in that: first wedge is affixed on a rotatable structural member.
Described second wedge can be fixed in the magnetic tube.
Further, described structural member can be a cylinder, and first wedge is affixed on its end face.
Further, the top of described cylinder and bottom offer platform.
Described magnet ring offers breach near an end of first wedge, and first wedge is placed on it.
Also be provided with a polarizing coating dispersion compensation sheet in the described magnet ring, this polarizing coating dispersion compensation sheet is positioned at second wedge the place ahead.
Compared with prior art, the utlity model has following favourable part:
(1) first wedge of this optoisolator is attached on the cylinder, and is easy to assembly, adjusts this cylinder by rotation and makes first wedge, Faraday rotator and second wedge reach position relation the most accurately, obtains best isolation easily.
(2) offer platform in the top and the bottom of cylinder, such this cylinder of easy clamping, convenient rotation is regulated.Offer breach at magnet ring near an end of first wedge, the assembling process that first wedge and cylinder are installed in the magnet ring is convenient, the one step clamping cylinder rotation of convenient simultaneously back.
(3) adopt polarizing coating dispersion compensation sheet, can obtain the optoisolator of less chromatic dispersion.
Description of drawings
Fig. 1 is the structural representation of traditional optoisolator.
Fig. 2 is the structural representation of the utility model adjustable optical isolator.
Fig. 3 is the structural representation of the isolated core 13 of the utility model adjustable optical isolator.
Fig. 4 is the structural representation of the cylinder 14 of the utility model adjustable optical isolator.
Fig. 5 is the structural representation of the magnet ring 131 of the utility model adjustable optical isolator.
Fig. 6 is another structural representation of the cylinder 14 of the utility model adjustable optical isolator.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
As Fig. 2, shown in Figure 3, this adjustable optical isolator, comprise pair of alignment parts 11,12 and be positioned at its middle isolated core 13, this isolated core 13 includes magnet ring 131, be provided with first wedge 132, Faraday rotator 133 and second wedge 134 in these magnet ring 131 inside along optical transmission direction, described second wedge 134 can be fixed in outside the magnetic tube.This Faraday rotator 133 and second wedge 134 are installed in the sleeve 16, and wherein first wedge 132 is affixed on the end face of a cylinder 14, and this cylinder 14 is rotatable.
Like this, first wedge 132 that is affixed on the cylinder 14 can freely rotate in assembling process, thereby makes things convenient for its adjusting.
For convenience of its frock, as shown in Figure 4, the top of described cylinder 14 and bottom offer platform 141.
In order to further facilitate its assembling, as shown in Figure 5, described magnet ring 131 offers breach 1311 near an end of first wedges 132, like this, first wedge 132 easily frock on magnet ring 131.
Wherein, the described cylinder 14 that posts first wedge 132 can place outside the magnetic tube, is not repeated at this, obviously simplifies its assembling process.
Also be provided with a polarizing coating dispersion compensation sheet 15 in the described magnet ring 131, this polarizing coating dispersion compensation sheet 15 is positioned at second wedge, 134 the place aheads, and this polarizing coating dispersion compensation sheet 15 preferably also is installed in the described sleeve pipe 16.
Wherein, the mode that first wedge 132 is affixed on the cylinder 14 comprises some kinds, Fig. 6 is a kind of mode wherein, as shown in Figure 6, cylinder 14 comprises a groove 142, first wedge 132 partly or entirely is fixed on the described groove 142, thereby the reliability that first wedge 132 is anchored on the described cylinder 14 is higher.
Compared with prior art, the utlity model has following favourable part:
(1) first wedge 132 of this optoisolator is attached on the rotatable cylinder 14, easy to assembly, adjust this cylinder 14 by rotation and make first wedge 132, Faraday rotator 133 and second wedge 134 reach position relation the most accurately, obtain best isolation easily.
(2) offer platform 141 in the top and the bottom of cylinder 14, this cylinder 14 of so easy clamping, convenient rotation is regulated.Offer breach at magnet ring 131 near an end of first wedge 132, the assembling process that first wedge 132 and cylinder 14 are installed in the magnet ring is convenient, one step clamping cylinder, 14 rotations of convenient simultaneously back.
(3) adopt polarizing coating dispersion compensation sheet 15, can obtain the optoisolator of less chromatic dispersion.
The above person is the utility model most preferred embodiment only, is not to be used to limit scope of the present utility model, and all equivalences of being done according to the utility model claim change or modify, and are all the utility model and contain.
Claims (7)
1. adjustable optical isolator, comprise the pair of alignment parts and be positioned at its middle isolated core, this isolated core inside is provided with first wedge, Faraday rotator and second wedge along optical transmission direction, this Faraday rotator is fixed in the magnetic tube, it is characterized in that: first wedge is affixed on the rotatable structural member.
2. the optoisolator of debugging according to claim 1, it is characterized in that: second wedge can be fixed in the magnetic tube.
3. the optoisolator of debugging according to claim 1, it is characterized in that: described structural member can be a cylinder, and first wedge is affixed on its end face.
4. the optoisolator of debugging according to claim 1 is characterized in that: the top and the bottom of described cylinder offer platform.
5. the optoisolator of debugging according to claim 1, it is characterized in that: described cylinder comprises the groove of ccontaining first wedge.
6. according to the arbitrary described optoisolator of debugging of claim 1-5, it is characterized in that: described magnet ring offers breach near an end of first wedge, and first wedge is placed on it.
7. adjustable optical isolator according to claim 1 is characterized in that: also be provided with a polarizing coating dispersion compensation sheet in the described magnet ring, this polarizing coating dispersion compensation sheet is positioned at second wedge the place ahead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200933691U CN201194031Y (en) | 2008-04-21 | 2008-04-21 | Adjustable light isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200933691U CN201194031Y (en) | 2008-04-21 | 2008-04-21 | Adjustable light isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201194031Y true CN201194031Y (en) | 2009-02-11 |
Family
ID=40393564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200933691U Expired - Lifetime CN201194031Y (en) | 2008-04-21 | 2008-04-21 | Adjustable light isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201194031Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230994A (en) * | 2011-06-29 | 2011-11-02 | 武汉电信器件有限公司 | Faraday magneto optic isolator |
| CN102393575A (en) * | 2011-12-14 | 2012-03-28 | 索尔思光电（成都）有限公司 | Optical fiber free-space isolator and assembling method thereof |
-
2008
- 2008-04-21 CN CNU2008200933691U patent/CN201194031Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230994A (en) * | 2011-06-29 | 2011-11-02 | 武汉电信器件有限公司 | Faraday magneto optic isolator |
| CN102393575A (en) * | 2011-12-14 | 2012-03-28 | 索尔思光电（成都）有限公司 | Optical fiber free-space isolator and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090211 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: O-Net Information Technology (Shenzhen) Co.,Ltd. Document name: Notification of Expiration of Patent Right Duration |