CN212569203U - Substrate applied to optical device - Google Patents

Abstract

The utility model discloses a be applied to optical device's base plate, including the base plate main part, base plate main part top is equipped with the recess along axial direction, the side of base plate main part is the face of cylinder, base plate main part bottom is the plane, just the base plate main part branch is equipped with first dispensing district, second dispensing district and guard space, first dispensing district with the recess internal surface in second dispensing district is the mat surface, the recess internal surface in guard space is the smooth surface, the recess the face of cylinder and be the circular arc chamfer each other between the terminal surface of base plate main part. The design of the bottom plane of the substrate can effectively improve the positioning precision of the substrate and avoid the substrate rolling in the dispensing process; the inner surfaces of the grooves of the protective area and each point glue area are respectively set as a smooth surface and a rough surface, so that the light transmission of the substrate is improved, the defects of microcracks and mechanical stress caused by grinding are avoided, the breakage rate is reduced by the design of the arc chamfer, and the high-reliability effect of the substrate is realized.

Description

Substrate applied to optical device

Technical Field

The utility model relates to an optical fiber communication device system field especially relates to a be applied to optical device's base plate.

Background

Quartz substrate: the optical fiber coupler is one element made of quartz material for fixing optical fiber, and the optical fiber coupler is one long single-groove quartz substrate with outer diameter smaller than 3mm and length smaller than 30 mm.

Optical devices play an important role in optical fiber communications as devices that convert electrical signals into optical signals or optical signals into electrical signals. Generally, optical devices are classified into active devices and passive devices. The optical active device is used as the heart of the optical transmission system and is provided with a light detector for converting an electric signal into an electric signal and a light source for converting the electric signal into an optical signal; the optical devices including the optical fiber coupler and the like are optoelectronic devices driven without external energy sources, and are joints for optical transmission. In fiber optic couplers, a quartz substrate is typically used to secure the relatively fragile coupling region of the fiber protection to ensure parameter stability.

The quartz substrate in the prior art generally has the problems of poor positioning accuracy, high breakage rate and low reliability. Patent document (publication No. CN201773196U) discloses a quartz substrate structure which is long-strip-shaped as a whole, has a cylindrical shape with a partial external form, is provided with a groove in the inner part along the axial direction, and has an arc-shaped bottom; the product structure has the following defects: the bottom of the arc-shaped substrate is easy to rotate when in use, accurate clamping between the optical fibers and the quartz substrate is difficult to realize, and the consistency of the distances between the left and right optical fibers and the three groove surfaces of the positioning groove is difficult to control; the groove bottom and the notch in the product structure are wide, the using amount is large during glue dispensing, the tensile stress on two sides of the groove caused by curing and shrinkage of glue is large, and high glue dispensing cost and high glue dispensing breakage reject ratio are easily caused; when the product is used, the optical fibers are required to be fixed at two ends by dispensing, and the reliability of the optical fiber coupler is low because the corresponding length control of a dispensing area is not carried out.

Patent document (publication No. CN1153992C) discloses a quartz substrate prepared by a mechanical grinding method; the groove surface of the manufactured quartz substrate is rough, and the reliability of the optical fiber coupler is reduced due to the fact that a large number of microcracks which are difficult to detect and the mechanical stress residue are easy to generate point crossing cracking and breaking.

Patent document (publication No. CN1872751A) discloses a quartz substrate produced by a high-temperature melt-drawing method, wherein both end faces of the quartz substrate produced by the high-temperature melt-drawing method are also machined by a mechanical grinding method, so that the problems of micro-cracks and mechanical stress still exist.

Patent document (publication No. 106956185a) discloses a quartz substrate having a groove surface roughened; as the whole rough surface is roughened, the light transmittance of the product is poor, the detection of the outer edge is difficult, and the gas line defect in the quartz substrate is difficult to detect, so that the reliability of the product is reduced.

How to design a quartz substrate with high positioning accuracy, low breakage rate and good reliability becomes a technical problem to be solved urgently in the industry.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present invention provides a substrate for an optical device, which has high positioning accuracy, low breakage rate and good reliability.

The utility model adopts the technical proposal that:

the utility model provides a be applied to base plate of optical device, includes the base plate main part, base plate main part top is equipped with the recess along axial direction, the side of base plate main part is the face of cylinder, base plate main part bottom is the plane, just the base plate main part divides to be equipped with first dispensing district, second dispensing district and guard space, first dispensing district with the recess internal surface in second dispensing district is the rough surface, the recess internal surface in guard space is the smooth surface, the recess, the face of cylinder and be the circular arc chamfer each other between the terminal surface of base plate main part.

Optionally, the length of the first dispensing area and the length of the second dispensing area may be the same or different.

Optionally, the bottom of the groove is a semicircular arc, and the diameter of the semicircular arc is larger than that of the preset optical fiber.

Optionally, the groove is symmetrical about an axis of symmetry of the substrate body, and the semicircular arc is tangent to both sides of the groove.

Optionally, two side surfaces of the groove are perpendicular to the bottom of the substrate body.

Optionally, the depth of the groove is greater than the width of the groove.

Optionally, the groove widths of the protection regions are smaller than the groove width of the first dispensing region and the groove width of the second dispensing region.

Optionally, the groove depth of the protection area is smaller than the groove depth of the first dispensing area and the groove depth of the second dispensing area.

Optionally, the end surface of the substrate main body, the cylindrical surface, the plane, and the inner surface of the groove of the guard area are all subjected to surface smoothing treatment.

Optionally, the surface smoothing comprises polishing or lapping.

The utility model has the advantages that: the bottom of the substrate main body is set to be a plane, so that the positioning precision of the substrate can be improved, and the substrate is effectively prevented from rolling in the dispensing process; establish the recess internal surface of protection zone into the smooth surface, and first point gum district and second point gum district all establish to the rough surface and have not only improved the light transmissivity of base plate, avoided the drawback of microcrack and mechanical stress because of the grinding causes moreover, the problem of damaged height in the sharp processing procedure of edge juncture has further been avoided in setting up of recess, face of cylinder and the mutual circular arc chamfer between base plate main part terminal surface simultaneously to realize the effect of the high reliability of base plate.

Drawings

Fig. 1 is a block diagram of a substrate applied to an optical device according to the present invention;

fig. 2 is a schematic diagram of a substrate end face applied to an optical device according to the present invention.

Reference numerals: 1. the substrate comprises a substrate body, 11 grooves, 12 cylindrical surfaces, 13 planes, 14 first dispensing areas, 15 protective areas, 16 second dispensing areas and 101 circular arc chamfers.

Detailed Description

As shown in fig. 1 and 2, a substrate applied to an optical device, including a substrate main body 1, a groove 11 is arranged at the top of the substrate main body 1 along the axial direction, the side surface of the substrate main body 1 is a cylindrical surface 12, the bottom of the substrate main body 1 is a plane 13, and the substrate main body 1 is provided with a first dispensing area 14, a second dispensing area 16 and a protection area 15, the inner surfaces of the grooves of the first dispensing area 14 and the second dispensing area 16 are rough surfaces, the inner surface of the groove of the protection area 15 is a smooth surface, and the grooves 11, the cylindrical surface 12 and the end surface of the substrate main body 1 are arc chamfers 101.

In this embodiment, the substrate body 1 is a long strip, the top of the substrate body is provided with a groove 11, and the end surface of the substrate body 1 is approximately horseshoe-shaped and axisymmetric. Establish the recess internal surface of first dispensing district 14 and the recess internal surface of second dispensing district 16 into the mat surface, be favorable to improving the adhesive force on glue and groove surface, improve the problem of coming unstuck to and set up protection zone 15 into the problem that the light transmissivity is poor for the smooth surface, be convenient for detect the base plate. The design of the arc chamfer 101 among the groove 11 of the substrate main body, the cylindrical surface 12 of the substrate main body and the end surface of the substrate main body can be beneficial to reducing stress concentration and edge breakage rate in the processing process, meanwhile, the surface has no microcrack, and the reliability of the substrate is improved. In addition, the bottom surface of the substrate main body 1 is set to be the plane 13, so that the positioning precision of the substrate can be improved, and the substrate is effectively prevented from rolling in the dispensing process; thereby achieving the effect of high reliability of the substrate.

Optionally, the length of the first dispensing zone and the length of the second dispensing zone comprise the same or different.

Specifically, in the actual production operation process, the length of the first dispensing area and the length of the second dispensing area can be set to be the same or different according to the design requirement of the substrate, so that the reliability of the substrate is further improved.

Optionally, the bottom of the groove is a semicircular arc, and the diameter of the semicircular arc is larger than that of the preset optical fiber.

In this embodiment, circular-arc recess bottom is convenient for process, avoids the production of surperficial microcrack moreover, further improves the reliability of product. The preset optical fiber refers to an optical fiber arranged in the groove. Specifically, in this embodiment, the bottom of the groove can be designed as a minor arc and a major arc, and the diameter of the semicircular arc can be selected to be 0.1 to 0.2 mm larger than the diameter of the preset optical fiber.

Optionally, the groove is symmetrical about an axis of symmetry of the substrate body, the semi-circular arc being tangent to both sides of the groove.

The tangential arc transition between the groove with the semicircular arc-shaped bottom and the two side surfaces of the groove is further realized, the stress concentration in the machining process is reduced, the edge breakage rate in the cold machining process is reduced, and the reliability of the product is improved.

Optionally, both side surfaces of the groove are perpendicular to the bottom of the substrate body.

Optionally, the depth of the groove is greater than the width of the groove.

In this embodiment, the depth design of recess is 1.2 to 2.2 times the width of recess, and the design of narrow deep groove can reduce the gluey volume of using of gluing process 30% to 40%, and the design of narrow notch compares traditional scheme and reduces 50% moreover, therefore the solidification shrink that the notch goes out reduces the pulling force to the groove both sides, is favorable to improving the some point of product and breaks the problem.

Optionally, the groove widths of the protection region are smaller than the groove width of the first dispensing region and the groove width of the second dispensing region.

Optionally, the groove depth of the protection region is smaller than the groove depth of the first dispensing region and the groove depth of the second dispensing region.

In this embodiment, make point gum area and guard zone produce the difference in height, can play the effect that dams the glue solution that flows, the more accurate control of the volume of being convenient for to glue simultaneously.

Optionally, the end surface, the cylindrical surface, the plane surface of the substrate main body and the inner surface of the groove of the protection zone are subjected to surface smoothing treatment.

Optionally, the surface smoothing comprises polishing or lapping.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims (10)

1. The utility model provides a be applied to base plate of optical device which characterized in that, includes the base plate main part, base plate main part top is equipped with the recess along axial direction, the side of base plate main part is the face of cylinder, base plate main part bottom is the plane, just the base plate main part divides and is equipped with first dispensing district, second dispensing district and guard space, first dispensing district with the recess internal surface in second dispensing district is the rough surface, the recess internal surface in guard space is the smooth surface, the recess, the face of cylinder and be circular arc chamfer each other between the terminal surface of base plate main part.

2. A substrate for an optical device as claimed in claim 1, wherein the length of the first dispensing region and the length of the second dispensing region are the same or different.

3. The substrate of claim 1, wherein the bottom of the groove is a semicircular arc, and the diameter of the semicircular arc is larger than the diameter of the pre-positioned optical fiber.

4. A substrate for a light device according to claim 3, wherein said groove is symmetrical about an axis of symmetry of said substrate body, and said semicircular arc is tangent to both sides of said groove.

5. A substrate for a light device according to claim 1 or 4, wherein both side surfaces of the groove are perpendicular to the bottom of the substrate main body.

6. A substrate for a light device according to claim 1, wherein the depth of the groove is larger than the width of the groove.

7. A substrate applied to an optical device as recited in claim 1, wherein the groove width of the guard region is smaller than the groove width of the first dispensing region and the groove width of the second dispensing region.

8. A substrate for an optical device as claimed in claim 1, wherein the groove depth of the guard region is less than the groove depth of the first dispensing region and the groove depth of the second dispensing region.

9. A substrate for an optical device as claimed in claim 1, wherein the end surface of the substrate main body, the cylindrical surface, the flat surface and the inner surface of the recess of the guard region are all subjected to surface smoothing treatment.

10. A substrate for a light device according to claim 9, wherein the surface smoothing treatment comprises polishing or lapping.

Images