CN211206841U - Optical fiber coupler - Google Patents
Optical fiber coupler Download PDFInfo
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- CN211206841U CN211206841U CN201921777122.6U CN201921777122U CN211206841U CN 211206841 U CN211206841 U CN 211206841U CN 201921777122 U CN201921777122 U CN 201921777122U CN 211206841 U CN211206841 U CN 211206841U
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- glass tube
- optical fiber
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- tube
- hard protection
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Abstract
The utility model discloses an optical fiber coupler, include: a substrate; the coupling optical fiber is provided with a coupling section, an input section and an output section, and the coupling section extends along the length direction of the substrate and is fixed on the substrate; the glass tube is sleeved outside the substrate and the coupling section, and two ends of the glass tube are sealed by plugs; the hard protection tube is sleeved outside the glass tube, and two ends of the hard protection tube are sealed by tail rubber; the input section penetrates out from the end cap at one end of the glass tube and the tail glue at one end of the hard protection tube in sequence, and the output section penetrates out from the end cap at the other end of the glass tube and the tail glue at the other end of the hard protection tube in sequence. In the utility model, the hard protection tube and the glass tube jointly form a double protection barrier of the optical fiber coupling section, so that the optical fiber coupling section can be in an effective sealing environment; the plug is used as a sealing device, so that the optical fiber coupling section is further fixed while stable sealing is realized, the reliability and stability of the optical fiber coupler are improved, and the normal work of the optical fiber coupler in a high-temperature high-humidity environment is ensured.
Description
Technical Field
The utility model relates to an optical communication passive device technical field especially relates to an optical fiber coupler.
Background
The optical fiber Coupler (Coupler), also called Splitter (Splitter), connector, adapter, optical fiber flange, is an element for realizing optical signal splitting/combining or for extending optical fiber link, belongs to the field of optical passive elements, is applied to telecommunication network, cable television network, user loop system, and local area network, and is a core element in the field of optical fiber communication.
In the related art, the optical fiber coupler packaging process generally fixes an optical fiber on a substrate by using epoxy glue after the optical fiber is fused and tapered, then sequentially sleeves a glass tube and a hard tube outside the substrate, and then respectively seals two ends of the glass tube and the hard tube by using the epoxy glue. The main defect is that the epoxy glue at the two ends of the glass tube has poor sealing performance, and moisture can enter the steel tube and the glass tube in a high-temperature and high-humidity environment, so that the stability of the glue for fixing the optical fiber is influenced, and the performance of the optical fiber coupler is further influenced.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an object of the present invention is to provide an optical fiber coupler, including:
a substrate;
the coupling optical fiber is provided with a coupling section formed by fused tapering, an input section positioned at one end of the coupling section and an output section positioned at the other end of the coupling section, and the coupling section extends along the length direction of the substrate and is fixed on the substrate;
the glass tube is sleeved outside the substrate and the coupling section, and two ends of the glass tube are sealed by plugs;
the hard protection tube is sleeved outside the glass tube, and two ends of the hard protection tube are sealed by tail rubber;
the input section sequentially penetrates out from the plug at one end of the glass tube and the tail glue at one end of the hard protection tube, and the output section sequentially penetrates out from the plug at the other end of the glass tube and the tail glue at the other end of the hard protection tube.
According to the optical fiber coupler provided by the embodiment of the utility model, the hard protection tube and the glass tube jointly form a double protection barrier of the optical fiber coupling section, so that the optical fiber coupling section in the glass tube can be in an effective sealing environment; further, the utility model discloses in adopt the end cap as the sealing device at glass pipe both ends, still play further fixed effect to the fiber coupling section when stable sealed, improved this fiber coupler's reliability and stability, guaranteed its normal work in the high temperature and high humidity environment.
Preferably, the method further comprises the following steps: the first colloid is arranged at the two ends of the glass tube, and the first colloid is matched with the plug head to seal the two ends of the glass tube.
Preferably, a gap is formed between the glass tube and the hard protection tube, and a second colloid is filled in the gap.
Preferably, the method further comprises the following steps: and the third colloid is arranged between the glass tube and the second colloid.
Preferably, two ends of the coupling section are respectively fixed on the substrate through a fourth colloid, and the substrate is fixed in the glass tube through an adhesive.
Preferably, the plug is a quartz plug.
Preferably, a drying agent is filled between the second colloid and the inner wall of the hard protection tube.
Preferably, the substrate is a quartz substrate.
Preferably, the coupling optical fiber is formed by at least two optical fibers processed by a fusion-draw-taper process.
Preferably, the hard protection pipe is a stainless steel pipe.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical fiber coupler according to an embodiment of the present invention.
Reference numerals:
the optical fiber coupling device comprises a substrate 1, a coupling optical fiber 2, a coupling section 201, an input section 202, an output section 203, a glass tube 4, a plug 6, a hard protection tube 8, tail glue 10, a first glue body 7, a second glue body 9, a third glue body 5 and a fourth glue body 3.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", and the like, indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The optical fiber coupler according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, according to an embodiment of the present invention, an optical fiber coupler includes:
a substrate 1; the coupling optical fiber 2 is provided with a coupling section 201 formed by fused tapering, an input section 202 positioned at one end of the coupling section 201 and an output section 203 positioned at the other end of the coupling section 201, and the coupling section 201 extends along the length direction of the substrate 1 and is fixed on the substrate 1;
the glass tube 4 is sleeved outside the substrate 1 and the coupling section 201, and two ends of the glass tube 4 are sealed by plugs 6;
the hard protection tube 8 is sleeved outside the glass tube 4, and two ends of the hard protection tube 8 are sealed by tail rubber 10;
the input section 202 sequentially penetrates out from the plug 6 at one end of the glass tube 4 and the tail rubber 10 at one end of the hard protection tube 8, and the output section 203 sequentially penetrates out from the plug 6 at the other end of the glass tube 4 and the tail rubber 10 at the other end of the hard protection tube 8.
The substrate 1 may be a quartz substrate. The coupling fiber 2 is generally formed by processing two or more fibers through a fused biconical taper process, for example, in the example of fig. 1, the coupling fiber 2 is formed by fusing biconical tapers of two fibers, that is, the two fibers are respectively a first fiber and a second fiber, wherein one end of the first fiber can be used as an input section 202 of the coupling fiber 2, the other end of the first fiber and the other end of the second fiber can be used as an output section 203 of the coupling fiber 2, and a coupling section 201 formed after fused biconical taper is arranged between the input section 202 and the output section 203, and at this time, the fiber coupler is used for distributing one optical signal into two optical signals.
It is understood that one end of the first optical fiber may also be used as the output section of the coupling optical fiber 2, and the other end of the first optical fiber and the other end of the second optical fiber may be used as the input section of the coupling optical fiber 2, in which case, the optical fiber coupler is used to combine two optical signals into one optical signal.
In other embodiments of the present invention, the coupling fiber 2 may be formed by three, four or even more fiber fusion tapers, and the number of fibers in the coupling fiber 2 is not limited herein.
Preferably, in other embodiments of the present invention, the optical fiber coupler further includes: the first colloid 7 is arranged at two ends of the glass tube 4, and the first colloid 7 is matched with the plugs 6 to seal two ends of the glass tube 4. Inevitably, the glass tube 4 and the plug 6 are prefabricated parts with certain sizes, and precision errors inevitably exist in the production process, so that the first colloid 7 effectively fills gaps between the plug 6 and two ports of the glass tube 4, an effective closed space is formed inside the glass tube 4, and a condition for isolating the coupling section 201 from the external environment is created. In the process, the plug 6 also serves to further fix the coupling segment 201, so that it can be stably fixed in the glass tube 4.
Preferably, a gap (not shown) is arranged between the glass tube 4 and the hard protection tube 8, and the gap is filled with a second colloid 9. The water molecules are liquid or gaseous, have the characteristics of no hole and no input, and can enter a tiny gap only by a thread gap under the condition of meeting a certain condition; therefore, in the embodiment of the present invention, the gap between the glass tube 4 and the hard protection tube 8 is filled, the adopted filler is the second colloid 9, and the glass tube 4 is also stably fixed inside the hard protection tube 8 by the second colloid 9.
Preferably, in other embodiments of the present invention, the optical fiber coupler further includes: and the third colloid 5 is arranged between the glass tube 4 and the second colloid 9. Here, the third glue 5 is a glue coated on the outer wall of the glass tube 4 in advance in the process of sealing the glass tube 4 to the hard protective tube 8, which further ensures the stability of the absolute position between the glass tube 4 and the hard protective tube 8.
Preferably, both ends of the coupling segment 201 are respectively fixed on the substrate 1 through a fourth colloid 3, and the substrate 1 is fixed in the glass tube 4 through an adhesive. The fourth glue body 3 here ensures the stability of the coupling segment 201 on the substrate 1.
Preferably, the plug 6 is a quartz plug.
Preferably, in another embodiment of the present invention, a drying agent (not shown) is filled between the second colloid 9 and the inner wall of the hard protection tube 8. The drying agent is used for absorbing moisture which possibly enters the hard protection tube 8, and the drying environment in the optical fiber coupler is further ensured.
Preferably, the hard protection tube 8 is a stainless steel tube. In addition, the hard protection pipe 8 may be made of other metal, nonmetal, or other material having physical properties such as hardness and corrosion resistance.
According to the optical fiber coupler provided by the embodiment of the utility model, the hard protection tube and the glass tube jointly form a double protection barrier of the optical fiber coupling section, so that the optical fiber coupling section in the glass tube can be in an effective sealing environment; further, the utility model discloses in adopt the end cap as the sealing device at glass pipe both ends, still play further fixed effect to the fiber coupling section when stable sealed, improved this fiber coupler's reliability and stability, guaranteed its normal work in the high temperature and high humidity environment.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. An optical fiber coupler, comprising:
a substrate;
the coupling optical fiber is provided with a coupling section formed by fused tapering, an input section positioned at one end of the coupling section and an output section positioned at the other end of the coupling section, and the coupling section extends along the length direction of the substrate and is fixed on the substrate;
the glass tube is sleeved outside the substrate and the coupling section, and two ends of the glass tube are sealed by plugs;
the hard protection tube is sleeved outside the glass tube, and two ends of the hard protection tube are sealed by tail rubber;
the input section sequentially penetrates out from the plug at one end of the glass tube and the tail glue at one end of the hard protection tube, and the output section sequentially penetrates out from the plug at the other end of the glass tube and the tail glue at the other end of the hard protection tube.
2. The fiber optic coupler of claim 1, further comprising: the first colloid is arranged at the two ends of the glass tube, and the first colloid is matched with the plug head to seal the two ends of the glass tube.
3. The optical fiber coupler according to claim 2, wherein a gap is provided between the glass tube and the hard protection tube, and the gap is filled with a second colloid.
4. A fiber optic coupler according to claim 3, further comprising: and the third colloid is arranged between the glass tube and the second colloid.
5. An optical fiber coupler according to claim 4, wherein: and two ends of the coupling section are respectively fixed on the substrate through a fourth colloid, and the substrate is fixed in the glass tube through an adhesive.
6. An optical fiber coupler according to claim 5, wherein: the plug is a quartz plug.
7. A fiber optic coupler according to claim 6, wherein: and a drying agent is filled between the second colloid and the inner wall of the hard protection tube.
8. The fiber optic coupler of claim 7, wherein the substrate is a quartz substrate.
9. The fiber optic coupler of claim 8, wherein the coupling fibers are formed from at least two fibers that have been processed by a fusion-draw process.
10. The fiber optic coupler of claim 9, wherein the rigid protective tube is a stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921777122.6U CN211206841U (en) | 2019-10-22 | 2019-10-22 | Optical fiber coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921777122.6U CN211206841U (en) | 2019-10-22 | 2019-10-22 | Optical fiber coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206841U true CN211206841U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921777122.6U Active CN211206841U (en) | 2019-10-22 | 2019-10-22 | Optical fiber coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115684468A (en) * | 2021-07-26 | 2023-02-03 | 科瑞工业自动化系统（苏州）有限公司 | Electric tracing safety light curtain |
-
2019
- 2019-10-22 CN CN201921777122.6U patent/CN211206841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115684468A (en) * | 2021-07-26 | 2023-02-03 | 科瑞工业自动化系统（苏州）有限公司 | Electric tracing safety light curtain |
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Denomination of utility model: a fiber optic coupler Effective date of registration: 20220822 Granted publication date: 20200807 Pledgee: Science and Technology Branch of Torch Development Zone of Zhongshan Rural Commercial Bank Co.,Ltd. Pledgor: ZHONGSHAN PUHUIXIN COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2022980013241 |