CN100368840C - Fibre-optical switch - Google Patents
Fibre-optical switch Download PDFInfo
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- CN100368840C CN100368840C CNB2005100720179A CN200510072017A CN100368840C CN 100368840 C CN100368840 C CN 100368840C CN B2005100720179 A CNB2005100720179 A CN B2005100720179A CN 200510072017 A CN200510072017 A CN 200510072017A CN 100368840 C CN100368840 C CN 100368840C
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- optical fibre
- optical axis
- input optical
- fiber switch
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Abstract
The present invention discloses an optical fiber switch which mainly comprises a graded index lens, a reflecting layer, an input optical fiber, a first output optical fiber, a second output optical fiber and a drive unit, wherein the graded index lens comprises a first end face which is provided with the reflecting layer, a second end face opposite to the first end face, and an optical axis which extends from the first end face to the second end face; the input optical fiber and the first and the second output optical fibers are opposite to the second end face and are positioned on the same plane. The first and the second output optical fibers are respectively arranged in parallel with the optical axis by a first and a second spaces. The input optical fiber is also arranged in parallel with the optical axis and is switched between the first and the second spaces by the translation of the drive unit. Thus, the switching function that signals of the input optical fiber can be switched and transmitted into the first and the second output optical fibers is achieved.
Description
Technical field
The present invention relates to a kind of switch, particularly relates to a kind of fiber switch.
Background technology
Optical fiber is made up of the glass fibre that can transmit the light signal, article one, very thin glass fibre can replace the thick cable of tradition, and has high-transmission efficient, degree of distortion is low, be not subjected to advantages such as electromagnetic interference (EMI), article one, good optical fiber often can spread out of several kilometers with signal, range of application has comprised modern world-wide web, high-quality video signal transmission, and cross verbal system of ocean etc., in the process of carrying out the signal transmission, owing to need signal be switched to different fiber optic networks by fiber switch, thus fiber switch be in fibre system indispensable critical elements.
For example shown in Figure 1, be first kind of fiber switch in the past, it mainly comprises a catoptron 110, an input optical fibre 10, one first output optical fibre 11, and one second output optical fibre 12.
This catoptron 110 comprises a recessed reflecting surface 111 around an axis I, and this catoptron 110 is to be adjacent to this axis I and the parallel one rotating shaft II rotation apart from d along one during use.
This input optical fibre 10 is to regard to this recessed reflecting surface 111 along this rotating shaft II direction.
This first output optical fibre 11 be with twice should apart from parallel this rotating shaft of the width of d II regard to this recessed reflecting surface 111.
This second output optical fibre 12 be with twice should apart from parallel this rotating shaft of the width of d II regard to this recessed reflecting surface 111, this second output optical fibre 12 and first output optical fibre 11 are mutual dislocation during configuration.
Whereby, when input one light signal arrives this input optical fibre 10, if these catoptron 110 positive rotation are in facing this first output optical fibre 11 simultaneously, then this light signal can import to output in this first output optical fibre 11 by the reflection of this recessed reflecting surface 111, if and these catoptron 110 positive rotation are when facing this second output optical fibre 12, then this light signal can import to output in this second output optical fibre 12 by the reflection of this recessed reflecting surface 111, so reflection and rotation by this catoptron 100, just can reach switch the light signal to this first, two output optical fibres 11,12 switching function, yet, because in fact light is producing through having higher chromatic dispersion (Dispersion) after the reflection of this recessed reflecting surface 111, so this is first years old, two output optical fibres 11,12 numerical aperture (NumericalAperture) needs to adopt the higher person can guarantee to receive reflection ray fully, and can't adopt the less optical fiber of numerical aperture to reduce whole cost.
And as shown in Figure 2, being second kind of fiber switch in the past, it does not exist together is to adopt one to tilt that catoptron 120 and the gradually changed refractive index lens 13 of θ are formed at angle.
This catoptron 120 is a plane mirror, and this catoptron 120 is to rotate from an input optical fibre 14 extended rotating shaft II along one during use.
When a light signal arrives this input optical fibre 14, can arrive this catoptron 120 again via these gradually changed refractive index lens 13 earlier, this catoptron 120 of this moment can carry out signal by rotation mode and switch, and then the light signal selected to import to wherein exporting in most output optical fibres 15, yet, when reality is made, how with the tilt adjustments of this catoptron 120 to angle θ the most accurately and non-deviation, not only can be quite difficult, and can change via the light path after the clinoplane reflection, focus on the shortcoming that is difficult for and take place so that also have.
In addition, also has as shown in Figure 3 the third fiber switch in the past, this the third fiber switch and second kind are roughly the same, its difference is in also increasing by a rotatable filter 16 and filters, yet, owing to be to adopt the catoptron 130 at angle of inclination to carry out the signal switching equally, adjust difficulty so have equally, and the shortcoming that is not easy to focus on takes place.
Summary of the invention
Therefore, purpose of the present invention is to be to provide a kind of easy to manufacture, with low cost, and can avoids causing because of factors such as chromatic dispersion, focusing the fiber switch of fiber-loss.
So fiber switch of the present invention comprises a housing, gradually changed refractive index lens, a reflection horizon, an input optical fibre, one first output optical fibre, one second output optical fibre, and a driver element.
These gradually changed refractive index lens are to be arranged in this housing, comprise one first end face, second end face in contrast to this first end face, and an optical axis that extends towards this second end face from this first end face.
This reflection horizon is in the face of this first end face.
This input optical fibre is to be parallel to this optical axis and to be arranged at also to face this second end face in this housing.
This first output optical fibre is to be parallel to this optical axis and input optical fibre and to be arranged in this housing and in the face of this second end face.
This second output optical fibre is to be parallel to this optical axis, input optical fibre and first output optical fibre and to be arranged at also to face this second end face in this housing, and this optical axis, input optical fibre and first and second output optical fibre are arranged on same plane.
This driver element is to be arranged in this housing, and be connected in wherein one of this input optical fibre and these gradually changed refractive index lens, and can drive and make the two produce relative translation, and then make one between this input optical fibre and the optical axis from wheelbase from being between one first distance and a second distance, to switch, and the distance of this first and second input optical fibre and optical axis is to equal this first and second distance respectively.
Whereby, the user be as long as this driver element of control just can be reached the switching function of switching light signal, so have easy to manufacturely, with low cost, avoids the advantage of fiber-loss.
Description of drawings
The present invention is described in detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a synoptic diagram, and first kind of fiber switch in the past is described;
Fig. 2 is a synoptic diagram, and second kind of fiber switch in the past is described;
Fig. 3 is a synoptic diagram, and the third fiber switch in the past is described;
Fig. 4 is a combination synoptic diagram, and the composition structure of one first preferred embodiment of fiber switch of the present invention is described;
Fig. 5 is a use synoptic diagram, and the use situation of above-mentioned this first preferred embodiment is described;
Fig. 6 is a combination synoptic diagram, and the composition structure of one second preferred embodiment of fiber switch of the present invention is described;
Fig. 7 is a combination synoptic diagram, and the composition structure of one the 3rd preferred embodiment of fiber switch of the present invention is described;
Fig. 8 is a combination synoptic diagram, and the user mode of above-mentioned the 3rd preferred embodiment is described.
Embodiment
Before the present invention is described in detail, be noted that in the following description content similar elements is to represent with identical numbering.
Shown in Fig. 4,5, first preferred embodiment of fiber switch of the present invention comprises a housing 20, gradually changed refractive index lens 30, a reflection horizon 40, an input optical fibre 50, one first output optical fibre 51, one second output optical fibre 52, and a driver element 60.
These gradually changed refractive index lens 30 are to be arranged in this housing 20, comprise one first end face 31, second end face 32 in contrast to this first end face 31, and an optical axis I who extends towards this second end face 32 from this first end face 31.
This reflection horizon 40 is in the face of this first end face 31, in this first preferred embodiment, this reflection horizon 40 is to form in the mode of being close to this first end face 31 by a plane mirror, also can the mode by direct plated film in this first end face 31 form this reflection horizon 40 during actual the manufacturing.
This input optical fibre 50 is variable be parallel to this optical axis I and be arranged in this housing 20 from d from wheelbase with one, and in the face of this second end face 32.
This first output optical fibre 51 is to be parallel to this optical axis I and to be arranged in this housing 20 with one first distance D 1, and in the face of this second end to 32.
This second output optical fibre 52 is to be parallel to this optical axis I and to be arranged in this housing 20 with a second distance D2 who is different from this first distance D 1, and in the face of this second end face 32, this optical axis I, input optical fibre 50 and first and second output optical fibre 51,52 are arranged at same plane.
This driver element 60 is to be arranged in this housing 20, do translation in order to drive this input optical fibre 50 with respect to this optical axis I, this driver element 60 comprises that two slide rails 61 perpendicular to this optical axis I and extension parallel to each other, one are slidedly arranged on described slide rail 61 and this input optical fibre 50 vertically disposed slide blocks 62 are provided, and piezoelectric actuated 63 of being linked to these slide block 62 sides along these slide rail 61 directions.
When this driver element 60 activates, can push away, draw this slide block 62 to do translation with respect to this optical axis I to drive this input optical fibre 50, and then make this input optical fibre 50 from wheelbase from d be this first, two distance D 1, switch between the D2, therefore be when equaling this first distance D 1 (as shown in Figure 4) from wheelbase from d when this input optical fibre 50, then the light signal in this input optical fibre 50 can be in regular turn via these gradually changed refractive index lens 30, this reflection horizon 40 and import to this first output optical fibre 51, on the contrary, if this input optical fibre 50 is (as shown in Figure 5) when equaling this second distance D2 from wheelbase from d, then the light signal in this input optical fibre 50 can import to this second output optical fibre 52.
So, with respect to three kinds of fiber switchs in the past, the present invention does the signal switching with the mode of translation optical fiber can make that mechanical action is more simple, therefore can be simpler, with low cost on making, and see through earlier these gradually changed refractive index lens 30 and reflect, through this reflection horizon 40 light is imported to the mode of other optical fiber again, then can effectively avoid the problem generation of fiber-loss, therefore the present invention can be useful in the fiber optic network of higher frequency range, and can possess better light transmission quality.
Cooperate as shown in Figure 6, roughly the same with the first above-mentioned preferred embodiment in second preferred embodiment of the present invention, it does not exist together is to be that these gradually changed refractive index lens 30 also can be replaced by a positive lens 70, and the functions of use that can possess same refracted ray.
Cooperate as Fig. 7, shown in 8, roughly the same in the 3rd preferred embodiment of the present invention with the first above-mentioned preferred embodiment, it does not exist together is to be this input optical fibre 50 and first, two output optical fibres 51,53 all maintain static, and the distance of this input optical fibre 50 and first output optical fibre 51 is the twice of one first distance D 1 ', the distance of this input optical fibre 50 and second output optical fibre 52 is the twice of a second distance D2 ', this driver element 60 is to do translation in order to drive these gradually changed refractive index lens 30, and then make one between this input optical fibre 50 and the optical axis I from wheelbase from d ' be this first, two distance D 1 ', switch between the D2 ', in this 3rd preferred embodiment, this driver element 60 comprises two baffle plates 64 that are arranged at these gradually changed refractive index lens 30 both sides respectively and are parallel to this optical axis I, this driver element 60 comprises this baffle plate 64 that stretched through perpendicular to this optical axis I, and be connected in Electromagnetically actuated 65 of this gradually changed refractive index lens 30 sides, described baffle plate 64 and this input optical fibre 50 and first, two output optical fibres 50,52 are provided with at grade, and described baffle plate 64 fully opposite one another.
This Electromagnetically actuated 65 is to produce mobile in order to drive these gradually changed refractive index lens 30, when allowing optical axis I be close to this input optical fibre 50 when this Electromagnetically actuated 65 these gradually changed refractive index lens 30 of promotion, can make the light beam of this input optical fibre 50 be directed in output in this second output optical fibre 52, and when allowing optical axis I be away from this input optical fibre 50, can make the light beam of this input optical fibre 50 be directed in output in this first output optical fibre 51 when this Electromagnetically actuated 65 these gradually changed refractive index lens 30 of pulling.
So in the above description; can find that fiber switch of the present invention is to adopt the mode of translation optical fiber or lens to switch in running; compared in the past and switched with the mode of rotating mirror; the present invention is on the control switch speed; on the mechanical action all far beyond come manyly easily with contact; and use rotation mode also to need to cooperate a miniature and accurate motor to control usually; use this piezoelectric actuated 63 or Electromagnetically actuated 65 start with respect to the present invention; its cost is cheaper certainly; and institute takes up space little also not fragile; and in use; the problem that then can avoid chromatic dispersion and light path to differ takes place; so the optics consume is little, can reach application target of the present invention and requirement really.
Claims (9)
1. a fiber switch comprises a housing, and is arranged at a reflection horizon, an input optical fibre, one first output optical fibre, one second output optical fibre in this housing, and a driver element, it is characterized in that:
This fiber switch also comprises gradually changed refractive index lens that are arranged in this housing, and these gradually changed refractive index lens comprise one first end face, second end face in contrast to this first end face, and an optical axis that extends towards this second end face from this first end face;
This reflection horizon is in the face of this first end face;
This input optical fibre is to be parallel to this optical axis and to face this second end face;
This first output optical fibre is to be parallel to this optical axis and input optical fibre and in the face of this second end face;
This second output optical fibre is to be parallel to this optical axis, input optical fibre and first output optical fibre and to face this second end face, and this optical axis, input optical fibre and first and second output optical fibre setting are at grade; And
This driver element is connected in wherein one of this input optical fibre and these gradually changed refractive index lens, and can drive and make the two produce relative translation, and then make one between this input optical fibre and the optical axis from wheelbase between one first distance and a second distance, switching, and the distance of this first and second input optical fibre and optical axis equals this first and second distance respectively.
2. fiber switch as claimed in claim 1 is characterized in that: this reflection horizon is made up of a plane mirror of being close to this first end face.
3. fiber switch as claimed in claim 1 is characterized in that: this reflection horizon is that direct plated film is formed at this first end face.
4. fiber switch as claimed in claim 1, it is characterized in that: this driver element comprises that two slide rails perpendicular to this optical axis and extension parallel to each other, one are slidedly arranged on described slide rail and provide this input optical fibre vertically disposed slide block, and piezoelectric actuated of being connected in this slide block side along this slide rail direction.
5. fiber switch as claimed in claim 1, it is characterized in that: this driver element comprises two baffle plates that are arranged at these gradually changed refractive index lens both sides respectively and are parallel to this optical axis, and this baffle plate and be connected in Electromagnetically actuated of this gradually changed refractive index lens side of stretching through perpendicular to this optical axis, described baffle plate and this input optical fibre and first and second output optical fibre setting at grade, described baffle plate is fully opposite one another.
6. a fiber switch comprises a housing, and is arranged at a reflection horizon, an input optical fibre, one first output optical fibre, one second output optical fibre in this housing, and a driver element, it is characterized in that:
This fiber switch also comprises a positive lens that is arranged in this housing, and this positive lens comprises one first end face, second end face in contrast to this first end face, and an optical axis that extends towards this second end face from this first end face;
This reflection horizon is in the face of this first end face;
This input optical fibre is to be parallel to this optical axis and to face this second end face;
This first output optical fibre is to be parallel to this optical axis and input optical fibre and in the face of this second end face;
This second output optical fibre is to be parallel to this optical axis, input optical fibre and first output optical fibre and to face this second end face, and this optical axis, input optical fibre and first and second output optical fibre are arranged on same plane; And
This driver element is connected in wherein one of this input optical fibre and this positive lens, and can drive and make the two produce relative translation, and then make one between this input optical fibre and the optical axis from wheelbase between one first distance and a second distance, switching, and the distance of this first and second input optical fibre and optical axis is to equal this first and second distance respectively.
7. fiber switch as claimed in claim 6 is characterized in that: this reflection horizon is made up of a plane mirror of being close to this first end face.
8. fiber switch as claimed in claim 6 is characterized in that: this reflection horizon is that direct plated film is formed at this first end face.
9. fiber switch as claimed in claim 6, it is characterized in that: this drive unit comprises that two slide rails perpendicular to this optical axis and extension parallel to each other, one are slidedly arranged on described slide rail and provide this input optical fibre vertically disposed slide block, and piezoelectric actuated of being connected in this slide block side along this slide rail direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100720179A CN100368840C (en) | 2005-05-25 | 2005-05-25 | Fibre-optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100720179A CN100368840C (en) | 2005-05-25 | 2005-05-25 | Fibre-optical switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869749A CN1869749A (en) | 2006-11-29 |
| CN100368840C true CN100368840C (en) | 2008-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100720179A Expired - Fee Related CN100368840C (en) | 2005-05-25 | 2005-05-25 | Fibre-optical switch |
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| Country | Link |
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| CN (1) | CN100368840C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542962A (en) * | 2019-09-24 | 2019-12-06 | 武汉光迅科技股份有限公司 | optical coupling subassembly and light emission subassembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751415A2 (en) * | 1995-06-28 | 1997-01-02 | Hewlett-Packard Company | Mechanical fiber optic switch |
| US5757993A (en) * | 1995-06-05 | 1998-05-26 | Jds Fitel Inc. | Method and optical system for passing light between an optical fiber and grin lens |
| US5859940A (en) * | 1996-07-30 | 1999-01-12 | Seiko Giken Co., Ltd. | Optical device and bidirectional communications system |
| CN1383006A (en) * | 2001-04-26 | 2002-12-04 | 日本板硝子株式会社 | Optical instrument |
| EP1498763A1 (en) * | 2003-07-18 | 2005-01-19 | Lg Electronics Inc. | Variable optical attenuator |
-
2005
- 2005-05-25 CN CNB2005100720179A patent/CN100368840C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757993A (en) * | 1995-06-05 | 1998-05-26 | Jds Fitel Inc. | Method and optical system for passing light between an optical fiber and grin lens |
| EP0751415A2 (en) * | 1995-06-28 | 1997-01-02 | Hewlett-Packard Company | Mechanical fiber optic switch |
| US5859940A (en) * | 1996-07-30 | 1999-01-12 | Seiko Giken Co., Ltd. | Optical device and bidirectional communications system |
| CN1383006A (en) * | 2001-04-26 | 2002-12-04 | 日本板硝子株式会社 | Optical instrument |
| EP1498763A1 (en) * | 2003-07-18 | 2005-01-19 | Lg Electronics Inc. | Variable optical attenuator |
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| Publication number | Publication date |
|---|---|
| CN1869749A (en) | 2006-11-29 |
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Granted publication date: 20080213 Termination date: 20110525 |