CN114442236A - End structure of optical transmission member - Google Patents
End structure of optical transmission member Download PDFInfo
- Publication number
- CN114442236A CN114442236A CN202011215777.1A CN202011215777A CN114442236A CN 114442236 A CN114442236 A CN 114442236A CN 202011215777 A CN202011215777 A CN 202011215777A CN 114442236 A CN114442236 A CN 114442236A
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- Prior art keywords
- light guide
- convex lens
- optical
- transmission member
- optical transmission
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
Abstract
The invention discloses an end structure of an optical transmission member, comprising: the light guide assembly comprises a fiber core and a cladding layer for cladding the fiber core, the refractive index of the cladding layer is smaller than that of the fiber core so as to allow optical signals to be transmitted in the light guide assembly in a total reflection mode, the glass protective layer at least covers the end portion of the light guide assembly, the convex lens is arranged on one side of the glass protective layer, the cross section of the end portion of the light guide assembly is an inclined plane relative to the axial direction of the light guide assembly, and the optical axis of the convex lens is perpendicular to the axial direction of the light guide assembly. The end structure of the optical transmission component can allow a larger tolerance to exist between the distances between the laser emitting component or the optical signal receiving component and the light guide component, thereby being beneficial to assembly and manufacture and reducing the size of the whole component.
Description
Technical Field
The present invention relates to an optical transmission member, and more particularly, to an end structure of an optical transmission member.
Background
Optical fiber (Optical fiber), Optical fiber for short, is a fiber made of glass or plastic, and light-conducting means for transmitting light in these fibers by the principle of total internal reflection is used. Planar optical waveguides are fabricated by semiconductor processes (including deposition, etching, etc.) from materials such as glass and silicon, which are transported by the principle of total internal reflection as optical fibers. Optical transmission members such as optical fibers or planar optical waveguides have a lower energy loss rate than transmission of electrical signals through cables, and therefore, when transmitting signals, the electrical signals are generally converted into optical signals by a laser emitting member, and the optical signals are transmitted toward the emitting end of the optical transmission member; the optical signal is transmitted to the receiving end via the optical transmission member, the optical signal is emitted from the optical transmission member toward the optical signal receiving member, and the optical signal receiving member converts the optical signal into an electrical signal.
However, tolerance of the laser emitting means and the optical signal receiving means to the distance from the optical fiber or the planar optical waveguide is very small, which makes assembly difficult. For example, the laser emitting member and/or the optical signal receiving member must be controlled to be spaced apart from the optical transmission member by about 20 to 40 μm, which may easily damage the tip of the optical transmission member or the surface of the above-mentioned optoelectronic device when the two devices are aligned. One solution is to grind the end surface of the optical transmission member at a 45 degree angle and the opto-electronic assembly sends or receives optical signals against the 45 degree bevel. However, the control of the polishing technique for the optical transmission member of this design must be very precise, and thus the manufacturing and assembling difficulties cannot be completely overcome.
Disclosure of Invention
The invention aims to solve various problems of the conventional optical transmission assembly and provides an end structure of an optical transmission member.
To achieve the above and other objects, the present invention provides an end structure of an optical transmission member, comprising: the optical waveguide component comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow optical signals to be transmitted in the optical waveguide component by total reflection; a glass protective layer at least covering the end part of the light guide component; and the convex lens is arranged on one side of the glass protective layer, wherein the section of the end part of the light guide component is an inclined plane relative to the axial direction of the light guide component, and the optical axis of the convex lens is vertical to the axial direction of the light guide component.
Optionally, the focal point of the convex lens is located at the cross-section of the end of the core.
Optionally, the end of the light guide member has a cross-section that is at an angle of less than 44 degrees to the axial direction of the light guide member.
Optionally, a laser emitting member is further included, disposed facing the convex lens.
Optionally, an optical signal receiving member is further included, disposed toward the convex lens.
Optionally, the number of the light guide assemblies is multiple, the light guide assemblies are arranged in parallel, and the glass protection layer covers at least the end portions of the light guide assemblies.
Optionally, the glass protection layer is provided with a plurality of V-shaped grooves parallel to the plurality of light guide members.
The present invention further provides an end structure of an optical transmission member, which includes: the optical waveguide component comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow optical signals to be transmitted in the optical waveguide component by total reflection; a glass protective layer at least covering the end part of the light guide component; and the convex lens is arranged on the section of the end part of the light guide component, wherein the section of the end part of the light guide component is vertical to the axial direction of the light guide component, and the optical axis of the convex lens is parallel to the axial direction of the light guide component.
Optionally, the convex lens has a focal point located at the core.
Optionally, the convex lens is proximate to a cross-section of the end of the light guide assembly.
Optionally, the optical module further comprises a spacer disposed on a cross section of the convex lens and the end of the light guide assembly.
The present invention further provides an end structure of an optical transmission member, which includes: the optical waveguide assembly comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow optical signals to be transmitted in the optical waveguide assembly by total reflection, and the section of the end part of the optical waveguide assembly is vertical to the axial direction of the optical waveguide assembly; a glass protective layer at least covering the end part of the light guide component; and the prism type convex lens is arranged at the end part of the light guide component, the prism type convex lens is provided with a connecting surface, a convex transparent surface and a reflecting surface relative to the connecting surface, the connecting surface is adjacent to the section of the end part of the light guide component, the reflecting surface is an inclined surface relative to the axial direction of the light guide component, the convex transparent surface forms the convex lens, and the optical axis of the convex lens is vertical to the axial direction of the light guide component.
Alternatively, the prism-shaped convex lens is an integrally formed prism.
Alternatively, the prism-shaped convex lens is a combination of a polygonal prism and a convex lens.
Optionally, the reflecting surface is angled less than 44 degrees from the axial direction of the light guide assembly.
Therefore, the end structure of the optical transmission component can allow a larger tolerance to exist between the distance between the laser emission component or the optical signal receiving component and the optical guide component, also allow a larger inclination angle tolerance to exist on the section of the end in the optical guide component, can be widely suitable for the design of various laser emission components or optical signal receiving components, and has the advantages of easy assembly and manufacture and reduced size of the whole component.
For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for purposes of illustration only and are not intended to limit the scope of the invention.
Drawings
Fig. 1 is a schematic cross-sectional view of an end structure of an optical transmission member according to a first embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view illustrating an end structure of an optical transmission member according to a second embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of another embodiment of an optical transmission member according to a second embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of an end structure of an optical transmission member according to a third embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of another embodiment of an optical transmission member according to a third embodiment of the present invention.
FIG. 6 is a perspective view of a plurality of light guide assemblies in parallel alignment according to an embodiment of the present invention.
Description of reference numerals:
100 end structure of optical transmission member
200 end structure of optical transmission member
200a end structure of optical transmission member
300 end structure of optical transmission member
300a end structure of optical transmission member
1 light guide assembly
11 core
12 coating layer
2 protective layer of glass
21 lower cover
22 upper cover
23V-shaped groove
3 convex lens
4 laser emitting member
5 optical signal receiving member
6 shim
7 prism type convex lens
71 connecting surface
72 convex transparent surface
73 reflective surface
7a convex lens
7b polyhedral prism
C optical axis
D axial direction
P circuit board
Angle theta
Angle of theta
Detailed Description
In order that the invention may be fully understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. The purpose, characteristics and function of the present invention will be understood by those skilled in the art from the disclosure of the present specification. It is to be noted that the invention may be practiced or applied in other specific embodiments, and that various modifications and changes may be made in the details within the description without departing from the spirit of the invention. The drawings attached to the present invention are for simplicity and illustrative purposes only, and are not drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the claims of the present invention. The description is as follows:
the end structure 100 of the optical transmission member of the present invention includes optical fibers (mainly made of glass), planar optical waveguides (usually made of glass and silicon) and is not limited thereto. The optical transmission member may be any optical member that utilizes an optical refractive index to achieve optical signal transmission.
As shown in fig. 1, an end structure 100 of an optical transmission member according to a first embodiment of the present invention includes: a light guide assembly 1, a glass protective layer 2 and a convex lens 3.
The optical waveguide assembly 1 includes a Core 11(Core) and a Cladding layer 12(Cladding) covering the Core 11, the Cladding layer 12 having a refractive index smaller than that of the Core 11 to allow an optical signal to be transmitted in the optical waveguide assembly 1 by total reflection.
The glass protective layer 2 covers at least the end of the light guide member 1. The glass protection layer 2 of the present invention can be divided into a lower cover 21 and an upper cover 22, and the lower cover 21 and the upper cover 22 are combined to completely cover the light guide assembly 1. In the present embodiment, the distinction between "upper" and "lower" is made with the direction of joining of the end structure 100 of the optical transmission member and the circuit board P (shown in fig. 6) as a boundary. The portion coupled or facing the circuit board P is a lower cover 21, and the portion facing the outside is an upper cover 22. However, the present invention is not limited thereto, and the glass protective layer 2 may be integrally formed to cover the light guide member 1.
Returning to fig. 1, a convex lens 3 is disposed on one side of the glass protective layer 2. In the present embodiment, the convex lens 3 is provided on the lower cover 21, and the cross section of the end portion of the light guide unit 1 is inclined at an angle θ with respect to the axial direction D of the light guide unit 1. The optical axis C of the convex lens 3 is perpendicular to the axial direction of the light guide member 1, and the focal point of the convex lens 3 is located at the cross section of the end of the core 11. However, the present invention is not limited thereto, and the focal position can be adjusted according to the polishing angle and the position of the convex lens 3, so as to effectively prevent the reflected light from returning to the original optical fiber or waveguide path.
The end structure 100 of the optical transmission member of the present invention is not limited to the emission end or the output end, and the optical signal may enter the optical guide assembly 1 from the end structure 100 of the optical transmission member, or may be emitted from the end structure 100 of the optical transmission member in the optical guide assembly 1.
When the optical signal is emitted from the laser emitting member 4 toward the convex lens 3, the laser emitting member 4 may be regarded as a point light source, the optical signal diverged by the point light source may be focused on the cross section of the end portion of the core 11 by the convex lens 3, and the optical signal may be totally reflected at the cross section to be transmitted to a remote place in the axial direction D of the light guide assembly 1 because the cross section of the end portion of the light guide assembly 1 is inclined with respect to the axial direction D of the light guide assembly 1.
Conversely, when a remote optical signal is transmitted toward the end structure 100 of the optical transmission member along the axial direction D in the optical guide assembly 1, the optical signal contacts the inclined section of the end of the optical guide assembly 1, and thus diverges at various angles toward the convex lens 3. The convex lens 3 focuses these multi-angle divergent optical signals on the optical signal receiving member 5.
Therefore, the end structure 100 of the optical transmission member of the present invention can converge the divergent optical signal to the focus point by the convex lens 3, so as to allow a larger tolerance between the distance between the laser emitting member 4 or the optical signal receiving member 5 and the optical guide assembly 1, and also allow a larger tolerance of the inclination angle of the cross section of the end portion in the optical guide assembly 1, and can be widely adapted to various different designs of the laser emitting member 4 or the optical signal receiving member 5, and has the advantages of easy assembly and manufacture, and reduced size of the whole member. In addition, the end structure 100 of the optical transmission member of the present invention can be used for multiple wavelength division multiplexing (simultaneously transmitting a plurality of optical signals with different wavelengths on a single optical fiber or waveguide), and multiple wavelength division demultiplexing (splitting a group of optical signals including a plurality of wavelengths into a plurality of optical signals with specific wavelengths), and is not limited to single optical fiber or waveguide transmission.
Further, in the present embodiment, the angle θ between the cross section of the end of the light guide member 1 and the axial direction of the light guide member is less than 44 degrees, and considering the abnormal effect caused by the reflected light of the incident light and the outgoing light, it is recommended to be preferably set within a range of 42.5 degrees ± 0.5 degrees.
Further, in the present embodiment, the end structure 100 of the optical transmission member further includes the aforementioned laser emitting member 4 disposed toward the convex lens 3. The Laser Emitting member 4 is, for example, a Vertical-Cavity Surface-Emitting Laser (VCSEL), and converts an electric signal into a Laser beam having a fixed wavelength and outputs the Laser beam.
Further, in the present embodiment, the end structure 100 of the optical transmission member further includes the aforementioned optical signal receiving member 5 disposed toward the convex lens 3. The optical signal receiving means 5 may be a Photo Diode (PD) to convert an optical signal into an electrical signal.
Further, in the present embodiment, as shown in fig. 6, there are a plurality of light guide members 1, the light guide members 1 are arranged in parallel, and the glass protective layer 2 covers at least the end portions of the light guide members 1.
Further, in the present embodiment, as shown in fig. 6, the glass protection layer 2 is provided with a plurality of V-shaped grooves 23, and the V-shaped grooves 23 are parallel to the light guide member 1 and can be used as a ruler for assembling and arranging the light guide member 1.
The present invention also proposes a second embodiment. As shown in fig. 2, the end structure 200 of the optical transmission member includes: a light guide assembly 1, a glass protective layer 2 and a convex lens 3.
The optical waveguide assembly 1 includes a Core 11(Core) and a Cladding layer 12(Cladding) covering the Core 11, the Cladding layer 12 having a refractive index smaller than that of the Core 11 to allow an optical signal to be transmitted in the optical waveguide assembly 1 by total reflection.
The glass protective layer 2 covers at least the end of the light guide member 1. The glass protection layer 2 of the present invention can be divided into a lower cover 21 and an upper cover 22, and the lower cover 21 and the upper cover 22 are combined to completely cover the light guide assembly 1. However, the present invention is not limited thereto, and the glass protective layer 2 may be integrally formed to cover the light guide member 1.
The main differences between this embodiment and the first embodiment are: the section of the end of the light guide component 1 is perpendicular to the axial direction D of the light guide component 1, the convex lens 3 is arranged on the section of the end of the light guide component 1, and the optical axis C of the convex lens 3 is parallel to the axial direction D of the light guide component 1.
Likewise, the end structure 200 of the optical transmission member of the present invention is not limited to the emission end or the output end, and the optical signal may enter the optical guide assembly 1 from the end structure 200 of the optical transmission member, or may be emitted from the end structure 200 of the optical transmission member in the optical guide assembly 1.
When the optical signal is emitted from the laser emitting member 4 toward the convex lens 3, the laser emitting member 4 can be regarded as a point light source, and the optical signal emitted from the point light source can be focused on the fiber core 11 by the convex lens 3, so that the optical signal is totally reflected in the light guide assembly 1 and transmitted to a remote place along the axial direction D of the light guide assembly 1.
Conversely, when a remote optical signal is transmitted toward the end structure 200 of the optical transmission member along the axial direction D in the optical guide assembly 1, the optical signal contacts the cross section of the end of the optical guide assembly 1 and diverges at various angles toward the convex lens 3. The convex lens 3 focuses these multi-angle divergent optical signals on the optical signal receiving member 5.
Therefore, the end structure 200 of the optical transmission member of the present invention can converge the divergent optical signal on the fiber core 11 by means of the convex lens 3, so as to allow a larger tolerance to exist between the distances between the laser emitting member 4 or the optical signal receiving member 5 and the optical guide assembly 1, and can be widely adapted to the design of various laser emitting members 4 (such as Edge-emitting laser (Edge-emitting Semiconductor Lasers), Distributed feedback laser (Distributed feedback laser)) or optical signal receiving members 5, and has the advantages of easy assembly and manufacture and reduced size of the whole member. In addition, the end structure 200 of the optical transmission member of the present invention can be used for multiple wavelength division multiplexing (simultaneously transmitting a plurality of optical signals with different wavelengths on a single optical fiber or waveguide) and multiple wavelength division demultiplexing (splitting a group of optical signals including a plurality of wavelengths into a plurality of optical signals with specific wavelengths), and is not limited to single optical fiber transmission.
Further, in the present embodiment, the focal point of the convex lens 3 is located at the core 11. However, the present invention is not limited thereto, and the focal position can be adjusted according to the polishing angle and the position of the convex lens 3, so as to effectively prevent the reflected light from returning to the original optical fiber or waveguide path.
Further, in one embodiment in the present embodiment, the convex lens 3 of the end structure 200 of the optical transmission member is adjacent to the cross section of the end of the light guide member 1. However, the present invention is not limited thereto. As shown in fig. 3, in another embodiment of the present embodiment, the end structure 200a of the optical transmission member further includes a spacer 6 disposed at a section of the convex lens 3 and the end of the light guide assembly 1 to adjust the transmitting/receiving distance of the laser emitting member 4 or the optical signal receiving member 5 in cooperation with the convex lens 3. The spacer 6 is preferably made of glass having a refractive index matching with that of the convex lens 3 and the light guide member 1. However, the invention is not so limited and any dielectric material that is non-absorbing in the operating wavelength may be used as the spacer.
The present invention further proposes a third embodiment. As shown in fig. 4, the end structure 300 of the optical transmission member includes: a light guide component 1, a glass protection layer 2 and a prism-shaped convex lens 7.
The optical waveguide assembly 1 includes a Core 11(Core) and a Cladding layer 12(Cladding) covering the Core 11, the Cladding layer 12 having a refractive index smaller than that of the Core 11 to allow an optical signal to be transmitted in the optical waveguide assembly 1 by total reflection.
The glass protective layer 2 covers at least the end of the light guide member 1. The glass protection layer 2 of the present invention can be divided into a lower cover 21 and an upper cover 22, and the lower cover 21 and the upper cover 22 are combined to completely cover the light guide assembly 1. However, the present invention is not limited thereto, and the glass protective layer 2 may be integrally formed to cover the light guide member 1.
The main differences between this embodiment and the first and second embodiments are: the cross section of the end of the light guide unit 1 is perpendicular to the axial direction D of the light guide unit 1, the prism-shaped convex lens 7 is provided at the end of the light guide unit 1, and the prism-shaped convex lens 7 has a connection surface 71, a convex transparent surface 72, and a reflection surface 73 opposite to the connection surface 71. The connecting surface 71 is adjacent to a cross section of the end of the light guide member 1, and the reflecting surface 73 is inclined at an angle θ' with respect to the axial direction D of the light guide member 1. The convex transparent surface 72 forms a convex lens having an optical axis C perpendicular to the axial direction D of the light guide assembly 1.
The end structure 300 of the optical transmission member of the present invention is not limited to the emission end or the output end, and the optical signal may enter the optical guide assembly 1 from the end structure 300 of the optical transmission member, or may be emitted from the end structure 300 of the optical transmission member in the optical guide assembly 1.
When the optical signal is emitted from the laser emitting component 4 toward the convex lens formed by the convex transparent surface 72, the laser emitting component 4 may be regarded as a point light source, the optical signal emitted from the point light source may be converged on the reflecting surface 73 by the convex lens formed by the convex transparent surface 72, and the reflecting surface 73 is an inclined surface with respect to the axial direction D of the optical guide assembly 1, so that the optical signal at each angle is totally reflected on the reflecting surface 73, and is emitted to the connecting surface 71 and converged on the fiber core 11 again, so that the optical signal is transmitted to a remote location along the axial direction D of the optical guide assembly 1.
Conversely, when the optical signal at a remote location is transmitted toward the end structure 300 of the optical transmission member along the axial direction D in the optical waveguide assembly 1, the optical signal at each angle is transmitted from the connection surface 71 in the prism-shaped convex lens 7 and totally reflected at the reflection surface 73, thus diverging at each angle toward the convex lens formed by the convex transparent surface 72. The convex lens formed by the convex transparent surface 72 focuses these multi-angle divergent optical signals on the optical signal receiving member 5.
Therefore, the end structure 300 of the optical transmission component of the present invention can allow a large tolerance to exist between the distance between the laser emitting component 4 or the optical signal receiving component 5 and the optical guide assembly 1, and also allow a large tolerance to exist for the inclination angle of the reflecting surface 73 of the prism-shaped convex lens 7, and can be widely adapted to various different designs of the laser emitting component 4 or the optical signal receiving component 5, and has the advantages of easy assembly and manufacture and reduced size of the whole component. In addition, the end structure 300 of the optical transmission member of the present invention can be used for multiple wavelength division multiplexing (simultaneously transmitting a plurality of optical signals with different wavelengths on a single optical fiber or waveguide), and multiple wavelength division demultiplexing (splitting a group of optical signals including a plurality of wavelengths into a plurality of optical signals with specific wavelengths), and is not limited to single optical fiber transmission.
Further, in the present embodiment, the included angle θ' between the reflecting surface 73 and the axial direction D of the light guide assembly 1 is less than 44 degrees, and preferably within a range of 42.5 degrees ± 0.5 degrees.
Further, in one embodiment of the present embodiment, the prism-shaped convex lens 7 is a prism integrally formed. However, the present invention is not limited thereto. As shown in fig. 5, in another embodiment in the present embodiment, the prism-shaped convex lenses of the end structure 300a of the optical transmission member are a combination of a polygonal prism 7b and a convex lens 7 a.
The present invention has been disclosed in terms of preferred embodiments, however, it will be understood by those skilled in the art that the embodiments are illustrative only and should not be construed as limiting the scope of the invention. It should be noted that all changes and substitutions equivalent to the described embodiments are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention is subject to the content defined by the claims.
Claims (15)
1. An end structure of an optical transmission member, characterized by comprising:
the optical waveguide assembly comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow an optical signal to be transmitted in the optical waveguide assembly by total reflection;
the glass protective layer at least covers the end part of the light guide component; and
a convex lens disposed on one side of the glass protective layer,
the cross section of the end part of the light guide component is an inclined plane relative to the axial direction of the light guide component, and the optical axis of the convex lens is perpendicular to the axial direction of the light guide component.
2. An end structure of an optical transmission member according to claim 1, wherein a focal point of the convex lens is located at a section of an end of the core.
3. An end structure of an optical transmission member as claimed in claim 1, wherein the angle between the cross section of the end of the light guide member and the axial direction of the light guide member is less than 44 degrees.
4. An end structure of an optical transmission member as set forth in claim 1, further comprising a laser emitting member disposed toward said convex lens.
5. An end structure of an optical transmission member as set forth in claim 1, further comprising an optical signal receiving member disposed toward said convex lens.
6. The end structure of an optical transmission member according to claim 1, wherein the number of the light guide members is plural, the plural light guide members are arranged in parallel, and the glass protective layer covers at least ends of the plural light guide members.
7. An end structure of an optical transmission member according to claim 6, wherein said glass protective layer is provided with a plurality of V-grooves parallel to said plurality of light guide members.
8. An end structure of an optical transmission member, characterized by comprising:
the optical waveguide assembly comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow an optical signal to be transmitted in the optical waveguide assembly by total reflection;
the glass protective layer at least covers the end part of the light guide component; and
a convex lens disposed on a cross section of an end of the light guide member,
the cross section of the end part of the light guide assembly is perpendicular to the axial direction of the light guide assembly, and the optical axis of the convex lens is parallel to the axial direction of the light guide assembly.
9. An end structure of an optical transmission member according to claim 8, wherein a focal point of the convex lens is located at the core.
10. An end structure of an optical transmission member as claimed in claim 8, wherein the convex lens is adjacent to a section of the end of the light guide member.
11. An end structure of an optical transmission member as claimed in claim 8, further comprising a spacer provided on a cross section of the convex lens and the end of the light guide member.
12. An end structure of an optical transmission member, characterized by comprising:
the optical waveguide assembly comprises a fiber core and a cladding layer for cladding the fiber core, wherein the refractive index of the cladding layer is smaller than that of the fiber core so as to allow optical signals to be transmitted in the optical waveguide assembly in a total reflection mode, and the section of the end part of the optical waveguide assembly is vertical to the axial direction of the optical waveguide assembly;
the glass protective layer at least covers the end part of the light guide component; and
prism type convex lens, set up in the tip of light guide component, prism type convex lens have connect face, convex lens and for the plane of reflection of connecting the face, connect the face border on the section of the tip of light guide component, the plane of reflection for the axial of light guide component is the inclined plane, convex lens formation convex lens, convex lens's optical axis perpendicular to the axial of light guide component.
13. An end structure of an optical transmission member according to claim 12, wherein said prism-shaped convex lens is an integrally formed prism.
14. An end structure of an optical transmission member according to claim 12, wherein said prism-shaped convex lens is a combination of a polygonal prism and a convex lens.
15. An end structure of an optical transmission member as claimed in claim 12, wherein the reflecting surface is angled less than 44 degrees from the axial direction of the light guide assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215777.1A CN114442236A (en) | 2020-11-04 | 2020-11-04 | End structure of optical transmission member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215777.1A CN114442236A (en) | 2020-11-04 | 2020-11-04 | End structure of optical transmission member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114442236A true CN114442236A (en) | 2022-05-06 |
Family
ID=81362156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011215777.1A Pending CN114442236A (en) | 2020-11-04 | 2020-11-04 | End structure of optical transmission member |
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| Country | Link |
|---|---|
| CN (1) | CN114442236A (en) |
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2020
- 2020-11-04 CN CN202011215777.1A patent/CN114442236A/en active Pending
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