CN85106205A - Fibre-optic connection - Google Patents
Fibre-optic connection Download PDFInfo
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- CN85106205A CN85106205A CN 85106205 CN85106205A CN85106205A CN 85106205 A CN85106205 A CN 85106205A CN 85106205 CN85106205 CN 85106205 CN 85106205 A CN85106205 A CN 85106205A CN 85106205 A CN85106205 A CN 85106205A
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Abstract
Light local apparatus of drawing from the fuse of band isolation tectal light transmitting fiber, especially monotype photoconduction fiber, be applicable to that the fusing of monitoring optical fiber connects.This apparatus includes organic glass body (31), has three faces at least.An arch surface of contact (32) can lean against band and isolate on the smooth curved length of tectal light transmitting fiber (F); An output face (33) can be discharged the light that enters body through surface of contact; Also have a reflecting surface (34), can reflex to output face to the light that enters body through surface of contact.The light of isolating outgoing on the tectal fibre-optic smooth curved length from band passes surface of contact (32) and enters into body (31) and will or reflex to output face (33) by direct projection, enters photo-detector (P) then.
Description
The present invention relates between two light transmitting fibers to realize end-to-end permanent connection, in this light transmitting fiber one or both can be the assemblies of an optical cable.Usually, two fibre-optic links are permanently fixed together by fusing or refractive index matched adhesive (index-mat-ching adhesive).
Realizing that these two kinds connect in the fibre-optic methods, before two light transmitting fibers are permanently linked together, need to guarantee two light transmitting fiber fuses in the axial direction in line so that best from a light transmitting fiber to another root light transmitting fiber light transmission.Under the situation of monotype photoconduction fiber, the diameter of light transmitting fiber fuse is less than its overall diameter, and at this moment, two light transmitting fibers axially are crucial especially in line.
At present, two kinds of axial straight methods of two light transmitting fibers that obtain the best are most popular.In the first method; light is injected into wherein fibre-optic end away from the junction; (isolating overlayer is softer polymeric material overlayer near the isolation overlayer on its of junction perhaps to be injected into light transmitting fiber; it covers on the fibre-optic glass surface; protect it to avoid mechanical damage; reduce small refraction loss; make fiber with less radius bend and keep this shape; this be additive method inaccessiable) on the part peelled off, continuous the monitoring of general input of the light that flows into another root light transmitting fiber covering of light transmitting fiber link place.Fibre-optic one or two relative to laterally moving, are reached minimum until above-mentioned monitored light, this just represent light transmitting fiber rightly retainer shaft connect then in line.In the second method, light be injected into wherein one fibre-optic away from the junction an end or be injected into light transmitting fiber near the junction, on the part that isolation overlayer on it has been peelled off, be transferred to the fibre-optic light of another root this fibre-optic away from the junction an end or in continuous the monitoring in position of the contiguous junction of this light transmitting fiber.Fibre-optic one or two relative to laterally moving, until reaching maximum away from end or above-mentioned light of drawing near the position, junction from another root is fibre-optic, this just represent light transmitting fiber rightly retainer shaft connect then in line.
In order to make the required operating personnel of this method of operation minimum, to it would be desirable light is injected into the place of first light transmitting fiber near the junction.Under first kind of situation, connect the connected monitoring of light that the termination spreads out from light transmitting fiber; Under second kind of situation, from another root light transmitting fiber near the light of the local outgoing of junction by continuous monitoring.
If light transmitting fiber is peelled off near the isolation overlayer in place, junction, it is can be not inconvenient that light is drawn from this, yet, we have found that, if isolating overlayer does not peel off, so will be with photodetector being difficult from extracting fully near the light that comes in the light transmitting fiber fuse of junction, this difficulty is under the smaller monotype photoconduction fiber situation of fuse diameter, and is more obvious.
The purpose of this invention is to provide a kind of improved apparatus and method, be used for light is extracted by involucrum and isolation overlayer in fibre-optic fuse.
According to the present invention, this improvement apparatus includes the body that the rigidity transparent material is made, and it has three faces at least.First is that surface of contact has arcuate in shape, can lean against band and isolate on the tectal fibre-optic smooth curved length; Second is output face, can discharge from the light that light transmitting fiber shines the body; The 3rd is reflecting surface, can reflex to above-mentioned output face to the light that enters body from above-mentioned surface of contact.The shape of above-mentioned surface of contact, reflecting surface and output face and reflecting surface and output face will make with respect to the situation of the position of surface of contact and lean on most light that the fuse on thereon the fibre-optic smooth curved length comes from above-mentioned body, pass fibre-optic involucrum and isolate overlayer and pass the smooth curved surface of contact and enter into body, direct projection and reflex to above-mentioned output face again enters photo-detector then.
For total external diameter is that the band of 250 μ m is isolated tectal light transmitting fiber, and preferably the radius-of-curvature of the smooth curved surface of contact of rigid body is 3 in the scope of 10mm, and the optimal curvatures radius is 4.5mm.In this case, preferably the arc length of smooth curved face in the right arc angle in its center of curvature place is in 60 ° to 120 ° scope; And the radius-of-curvature of smooth curved surface of contact is when being 4.5mm, and preferably the smooth curved surface of contact is in the right angle in its center of curvature place is in 80 ° to 90 ° scopes.
Reflecting surface can be a plane form substantially, and preferably the smooth curved arcuate in shape is so that the most tangential light ray that passes through from the smooth curved face is reflected to output face.The radius-of-curvature of the smooth curved surface of contact of rigid body is in 3 to 10 millimeters scope, in the right arc angle in its center of curvature place is in 60 ° to 120 ° scopes, best, the radius-of-curvature of smooth curved reflecting surface is 5 in the scope of 10mm, in the right arc angle in its center of curvature place is in 50 ° to 60 ° scope.
Smooth curved surface of contact and reflecting surface are preferably adjacent to each other.
Output face is plane form preferably, preferably also with the reflecting surface adjacency.
Rigid body is preferably made by the transparent plastic material of organic glass or other rigidity, so low price.
The major advantage of apparatus of the present invention is that it can effectively isolate the light focusing directive output surface that tectal light transmitting fiber enters into rigid body to major part from band, and photo-detector is a for example photodetector of cheap light detection device, so the operating efficiency height.Apparatus of the present invention is particularly suitable for and the photo-detector that has a groove uses together.
The present invention also comprises a kind of method of using previously described improvement apparatus that light is drawn from the tectal light transmitting fiber of band isolation.This method comprises makes fibre-optic part length produce smooth curved, make the smooth curved surface in contact face contact with it of the rigid body substantially of improving apparatus then so that light transmitting fiber with contact between the smooth curved surface of contact is on the whole length of smooth curved surface of contact; The light that comes from the light transmitting fiber fuse passes fibre-optic involucrum and isolates overlayer, the smooth curved surface of contact that passes rigid body enters body, light direct beam is arrived above-mentioned output face, direct projection simultaneously reflexes to above-mentioned output face again behind above-mentioned reflecting surface, then by above-mentioned output face to light detection device.
Band is isolated tectal light transmitting fiber and is preferably extended from the junction with the smooth curved surface of contact of straight line to rigid body.
Apparatus of the present invention and method are specially adapted to draw the situation of light from the fuse of a monotype photoconduction fiber, this light transmitting fiber and another root monotype photoconduction fiber are joined together.
The present invention will be by to isolating the narration of the embodiment of the best apparatus of drawing the tectal light transmitting fiber to light from band, with by to realizing that two bands isolate the narrations of the tectal fibre-optic end-to-end permanent best approaches that are connected, and come with reference to the accompanying drawings further to illustrate.
Fig. 1 is the side sectional view of best apparatus.
Fig. 2 isolates the schematic illustration that tectal light transmitting fiber is realized the employed apparatus of the best approach of permanent end-to-end link to two bands.
With reference to figure 1, light is isolated the best apparatus of drawing the tectal light transmitting fiber (F) from band partly, include the organic glass transparent body (31) of a rigidity.It is arcuate in shape that this organic glass body (31) has a surface of contact (32), leans against band and isolates on the smooth curved length of tectal light transmitting fiber (F); Also having an output face (33) is flat shape, can discharge from the light that light transmitting fiber shines the body; Also having a reflecting surface (34) is the smooth curved arcuate in shape, and it and output face (33) adjacency can reflex to output face to the light that enters body from surface of contact.The radius-of-curvature of surface of contact (32) is 4.5mm, is 85 ° in the right arc angle in center of curvature place; The radius-of-curvature of reflecting surface 34 is 6.7mm, is 55 ° in the right arc angle in center of curvature place.The shape of surface of contact (32), reflecting surface (34) and output face (33) and reflecting surface and output face must make with respect to the situation of surface of contact and lean on passing fibre-optic involucrum and isolating overlayer and pass most of light that smooth curved surface of contact (32) enters into body by direct projection with reflex to output face (33) of outgoing on thereon the fibre-optic smooth curved length from body (1), and then pass to photo-detector (P).
In the best approach that realizes two tectal fibre-optic end-to-end links of band isolation, on the connected end of next-door neighbour of every light transmitting fiber (11), (21), peel off a very short length isolating the overlayer part, the segment length that band is isolated overlayer light transmitting fiber (11) is centered around on the convex surface of smooth curved of anvil (12), the segment length that band is isolated overlayer light transmitting fiber (21) is centered around on the convex surface of smooth curved of anvil 22, and the radius-of-curvature of the convex surface of two anvils all is 4.5mm.
Organic glass rigid body 1 is next to be with on the smooth curved length of isolating overlayer light transmitting fiber (11) and places, and isolates on the tectal fibre-optic smooth curved length so that the arch surface of contact (2) of body leans against band.Rigid body (1) is suitable for that light passed the involucrum of light transmitting fiber (11) and isolates overlayer inciding in its fuse and going.This is the theme that we are narrated in another piece patented claim.Number of patent application is 85106206.Apply on the same day with patent of the present invention.Except arch surface of contact (2), body (1) also has input face (3), and the light that sends from light source can enter input face, and planar shaped reflecting surface (4), and it can reflex to surface of contact to the light that enters body from input face and get on.Input face (3), reflecting surface (4) and the mutual inclination angle of surface of contact (2) will make to inject most of light direct beam of body 1 or reflex to above-mentioned smooth curved surface of contact from input face and go, and pass isolation overlayer and involucrum that body leans on light transmitting fiber (11) thereon again.Organic glass rigid body (31) is next to be with on the smooth curved length of isolating overlayer light transmitting fiber (21) and places as shown in Figure 1, isolates on the smooth curved length of overlayer light transmitting fiber (21) so that the arch surface of contact (32) of body leans against band.Light source (16) adjacent body 1 is placed, and photodiode or other photo-detectors (36) adjacent body (31) are placed.
The isolation overlayer of light transmitting fiber (11), (21) end is peelled off, so that their fuse interconnects, retainer shaft is to being in line approx, the light that sends from light source (16), the plane of incidence (3) by body (1) is injected body, direct projection or reflex on the surface of contact (2) in body.Light passes isolation overlayer and the involucrum of being with on the smooth curved length of isolating tectal light transmitting fiber (11) again, enters in the fibre-optic fuse and goes.Part light imports the fuse of light transmitting fiber (21) into from the fuse of light transmitting fiber (11).Light isolates from band that fuse on the smooth curved length of overlayer light transmitting fiber (21) passes fibre-optic involucrum and the surface of contact (32) of isolating overlayer and passing body (31) enters body, direct projection or reflex in the output face (33) in body is imported in photodiode or other photo-detectors (36) again and is gone.In light transmitting fiber (11), (21) one or two are done relative to laterally moving, reach maximum up to light from the local outgoing of light transmitting fiber (21), express thus two fibre-optic fuses rightly retainer shaft finish connection then to being in line.
Adopt apparatus described above and method, make light transmitting fiber fuse retainer shaft in line, realize light from a light transmitting fiber to the fibre-optic best transmission of another root, and straight light transmitting fiber is coupled together, and this can be by means of automatically finishing with light incident apparatus and the detection related equipment of apparatus (40).
Claims (12)
1, light in the fibre-optic fuse by involucrum with isolate the apparatus that overlayer extracts, it is characterized in that the body (31) that this apparatus includes a rigidity transparent material and makes, and have three faces at least.First is surface of contact (32), has arcuate in shape, can lean against band and isolate on the smooth curved length of tectal light transmitting fiber (F); Second is output face (33), can discharge the light that shines from light transmitting fiber the body; The 3rd is reflecting surface (34), can reflex to above-mentioned output face to the light that enters body through above-mentioned surface of contact.The shape of above-mentioned surface of contact reflecting surface and output face and reflecting surface and output face will make with respect to the situation of surface of contact and lean on most of light that the fuse on thereon the fibre-optic smooth curved length comes from above-mentioned body, pass fibre-optic involucrum and isolate overlayer and pass the smooth curved surface of contact and enter into body, direct projection and reflex to above-mentioned output face again enters photo-detector (P) then.
2, according to the apparatus of claim 1, the radius-of-curvature of smooth curved surface of contact (32) that it is characterized in that rigid body is in 3 to 10 millimeters scope.
3, according to the apparatus of claim 1 or 2, the arc length that it is characterized in that smooth curved surface of contact (32) is in the right angle in its center of curvature place is in 60 ° to 120 ° scope.
4, according to each apparatus in several the claims in front, it is characterized in that the radius-of-curvature of the curved contact face (32) of rigid body is 4.5mm.
5,, it is characterized in that smooth curved surface of contact (32) arc angle right in its center of curvature place is in 80 ° to 90 ° scope according to the apparatus of claim 4.
6, according to each apparatus in several the claims in front, the shape that it is characterized in that reflecting surface (34) is the smooth curved arcuate in shape.
7, according to the apparatus of claim 2 or 3, the shape that it is characterized in that reflecting surface (34) is the smooth curved arch, and its radius-of-curvature is in 5 to 10 millimeters scope, in the right arc angle in its center of curvature place is in 50 ° to 60 ° scope.
8,, it is characterized in that smooth curved surface of contact (32) and reflecting surface (34) adjoin each other according to the apparatus of claim 7.
9, according to each apparatus in several the claims in front, it is characterized in that output face (33) is a flat shape.
10,, it is characterized in that output face (33) and reflecting surface (34) are adjacency according to the apparatus of claim 9.
11, according to each apparatus in several the claims in front, it is characterized in that rigid body is to be made by the transparent plastic material of organic glass or other rigidity.
12, use according to each apparatus in several the claims in front to come light is isolated the method for drawing the tectal light transmitting fiber from band, it is characterized in that this method comprises that the partial-length that makes light transmitting fiber (F) produces smooth curved, make smooth curved surface in contact (32) the face contact with it of the rigid body (31) of apparatus then so that light transmitting fiber with contact between the smooth curved surface of contact is on the whole length of smooth curved surface of contact; The light that comes from the light transmitting fiber fuse passes fibre-optic involucrum and the smooth curved face of isolating overlayer and passing rigid body enters body, light direct beam is arrived above-mentioned output face (33), direct projection simultaneously reflexes to above-mentioned output face again behind above-mentioned reflecting surface (34), arrive on the light detection device (P) by above-mentioned output face then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85106205 CN85106205A (en) | 1985-08-15 | 1985-08-15 | Fibre-optic connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85106205 CN85106205A (en) | 1985-08-15 | 1985-08-15 | Fibre-optic connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85106205A true CN85106205A (en) | 1987-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85106205 Pending CN85106205A (en) | 1985-08-15 | 1985-08-15 | Fibre-optic connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85106205A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991706A (en) * | 2012-04-20 | 2019-07-09 | 美光科技公司 | The method and apparatus of waveguide and dissipation field coupling photons detector is provided |
-
1985
- 1985-08-15 CN CN 85106205 patent/CN85106205A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991706A (en) * | 2012-04-20 | 2019-07-09 | 美光科技公司 | The method and apparatus of waveguide and dissipation field coupling photons detector is provided |
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