CN210270269U - Wavelength division multiplexer - Google Patents
Wavelength division multiplexer Download PDFInfo
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- CN210270269U CN210270269U CN201921146632.3U CN201921146632U CN210270269U CN 210270269 U CN210270269 U CN 210270269U CN 201921146632 U CN201921146632 U CN 201921146632U CN 210270269 U CN210270269 U CN 210270269U
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Abstract
The utility model provides a wavelength division multiplexer, which comprises a substrate, an incident end optical fiber, a reflecting end optical fiber, a passing end optical fiber and a filter plate, wherein a first side wall of the substrate is provided with an incident end groove, a reflecting end groove and a passing end groove, the incident end groove and the reflecting end groove are arranged in a crossed way at a preset angle, the filter is arranged at the joint of the incident end groove and the reflecting end groove through the coaxial arrangement of the end groove and the incident end groove, the incident end optical fiber is arranged in the incident end groove, the reflecting end optical fiber is arranged in the reflecting end groove, the through end optical fiber is arranged in the through end groove, the incident end surface of the incident end optical fiber at the joint is parallel to the first plane of the filter plate facing the joint, the reflecting end surface of the reflecting end optical fiber is parallel to the first plane, the end surface of the passing end optical fiber is parallel to the second plane of the filter plate facing the groove of the passing end. Use the utility model discloses a wavelength division multiplexer simple structure, convenient assembly.
Description
Technical Field
The invention relates to the technical field of wavelength division multiplexers, in particular to a wavelength division multiplexer.
Background
In an optical communication system, a Wavelength Division Multiplexer (WDM) is used to compound or decompose optical signals with different wavelengths, and along with the development of an optical communication technology, the wavelength division multiplexer is more and more widely applied. As shown in fig. 1, the conventional wavelength division multiplexer generally includes a ferrule 1, a two-fiber pigtail 2, a lens 3, a filter 4, a lens 5, and a single-wire pigtail 6, and the two-fiber pigtail 2, the lens 3, the filter 4, the lens 5, and the single-wire pigtail 6 are installed in a predetermined arrangement relationship in the ferrule 1. When current wavelength division multiplexer makeed, need assemble tail optical fiber and two fine tail optical fiber 2, lens 3, filter 4, lens 5 and single line tail optical fiber 6's angle and interval, because all devices all need install in sleeve pipe 4, the space is narrow and small, and is comparatively difficult when the adjustment for wavelength division multiplexer's preparation is comparatively complicated, and production efficiency is lower.
Disclosure of Invention
The invention mainly aims to provide a wavelength division multiplexer which is simple in structure and convenient to assemble.
In order to achieve the above main object, the wavelength division multiplexer according to the present invention comprises a substrate, an incident end fiber, a reflecting end fiber, a pass end fiber, and a filter, wherein a first sidewall of the substrate is provided with an incident end groove, a reflecting end groove, and a pass end groove, the incident end groove and the reflecting end groove are intersected at a predetermined angle, the filter is arranged at the joint of the incident end groove and the reflecting end groove through the coaxial arrangement of the end groove and the incident end groove, the incident end optical fiber is arranged in the incident end groove, the reflecting end optical fiber is arranged in the reflecting end groove, the through end optical fiber is arranged in the through end groove, the incident end surface of the incident end optical fiber at the joint is parallel to the first plane of the filter plate facing the joint, the reflecting end surface of the reflecting end optical fiber is parallel to the first plane, the end surface of the passing end optical fiber is parallel to the second plane of the filter plate facing the groove of the passing end.
Therefore, the wavelength division multiplexer is provided with the incident end groove and the reflection end groove which are intersected at a preset angle on the substrate, and the incident end groove and the reflection end groove are coaxially arranged and are respectively used for installing the incident end optical fiber, the reflection end optical fiber and the passing end optical fiber, so that when the wavelength division multiplexer is assembled, the incident end optical fiber, the reflection end optical fiber and the passing end optical fiber are directly placed into the corresponding incident end groove, reflection end groove and passing end groove, the angles of the incident end optical fiber, the reflection end optical fiber and the passing end optical fiber do not need to be adjusted, and the assembly speed is improved. Meanwhile, the incident end face and the reflecting end face are parallel to the first plane, the end face is parallel to the second plane of the filter, light rays in the incident end optical fibers can be emitted into the filter at a reasonable angle, the light rays returned by the filter can be reflected back to the reflecting end optical fibers, and the optical fibers penetrating through the filter can be received by the passing end optical fibers. In addition, the wavelength division multiplexer is simple in structure, does not need to use a collimating lens, and simplifies the structure setting.
In a further scheme, an incident end fiber core at the end face of the incident end is in contact with a reflecting end fiber core at the end face of the reflecting end.
Therefore, the incident end fiber core at the incident end face is in contact with the reflection end fiber core at the reflection end face, so that the incident end angle and the reflection end angle of light can be optimized, and the increase of light loss caused by the larger distance from the optical fiber to the filter plate is avoided.
In a further aspect, the predetermined angle is 60 degrees.
Therefore, when the incident end groove and the reflection end groove are intersected at a preset angle of 60 degrees, the light propagation angle is optimal.
In a further scheme, a filter plate groove is formed in the position, close to the joint, of the substrate, and the filter plate is installed in the filter plate groove.
Therefore, the filter plate grooves are formed in the positions, close to the joint, of the base plate and used for installing the filter plates, installation can be facilitated, and assembling efficiency is improved.
In a further scheme, the first side wall is further provided with a standby groove, and the standby groove and the reflecting end groove are coaxially arranged.
Therefore, the spare groove is arranged, and the passing end optical fiber can be correspondingly arranged in the passing end groove or the spare groove according to the installation positions of the incident end optical fiber and the reflection end optical fiber when the wavelength division multiplexer is assembled. Meanwhile, the substrate slotting process is facilitated.
In a further aspect, the substrate is a glass substrate.
Therefore, the glass substrate has a good thermal expansion coefficient, so that the stress-free and high-reliability substrate and the optical fiber displacement-free substrate at high temperature are ensured, and the stability of the wavelength division multiplexer can be improved by using the glass substrate as the substrate.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a wavelength division multiplexer in the prior art.
Fig. 2 is a block diagram of an embodiment of the wavelength division multiplexer of the present invention.
Fig. 3 is a structural view of a substrate in an embodiment of the wavelength division multiplexer of the present invention.
Fig. 4 is an enlarged view of the structure of the junction of the groove at the incident end and the groove at the reflection end in the wavelength division multiplexer according to the embodiment of the present invention.
Fig. 5 is an enlarged view of a structure at a passing end face in an embodiment of the wavelength division multiplexer of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
As shown in fig. 2, the wavelength division multiplexer of the present embodiment includes a substrate 10, an incident end optical fiber 11, a reflection end optical fiber 12, a pass end optical fiber 13, and a filter 14, wherein the substrate 10 is a glass substrate. Referring to fig. 3, the first sidewall 101 of the substrate 10 is provided with an incident end groove 102, a reflective end groove 103, and a through end groove 104, and the incident end groove 102 and the reflective end groove 103 are disposed to intersect at a predetermined angle, and are disposed coaxially with the incident end groove 102 through the end groove 104, preferably, the predetermined angle is 60 degrees. The filter 14 is installed at the junction 105 of the incident end groove 102 and the reflecting end groove 103, the incident end fiber 11 is installed at the incident end groove 102, the reflecting end fiber 12 is installed at the reflecting end groove 103, and the pass end fiber 13 is installed at the pass end groove 104. Referring to fig. 4, the incident end surface 111 of the incident end optical fiber 11 at the junction 105 is parallel to the first plane 141 of the filter 14 facing the junction 105, the reflective end surface 121 of the reflective end optical fiber 12 at the junction 105 is parallel to the first plane 141, and the incident end fiber core 111 at the incident end surface 111 is in contact with the reflective end fiber core 122 at the reflective end surface 121. Referring to fig. 5, the passing end face 131 of the passing end fiber 13 is parallel to the second plane 142 of the filter 14 facing the passing end groove 104. The first plane 141 is opposite to the second plane 142.
As can be seen from fig. 2 and 3, the substrate 10 is provided with a filter groove 106 near the junction 105, and the filter 14 is mounted in the filter groove 106. The first sidewall 101 of the substrate 10 is further provided with a spare groove 107, and the spare groove 107 is coaxially disposed with the reflective end groove 103.
In the manufacturing process of the wavelength division multiplexer of this embodiment, the substrate 10 is first cleaned and dried, and then the filter 14 is mounted in the filter groove 106 and fixed by glue, so that the first plane 141 of the filter 14 faces the joint 105 and the second plane 142 of the filter 14 faces the through-end groove 104. Next, the side surfaces of the incident end optical fiber 11 and the reflection end optical fiber 12 at the junction 513 are ground, and meanwhile, the incident end surface 111 of the incident end optical fiber 11 and the reflection end surface 121 of the reflection end optical fiber 12 are ground, so that when the incident end optical fiber 11 and the reflection end optical fiber 12 are installed in the incident end groove 102 and the reflection end groove 103, both the incident end surface 111 and the reflection end surface 121 are parallel to the first plane 141 of the filter 14, and the incident end fiber core 111 at the incident end surface 111 is just in contact with the reflection end fiber core 122 at the reflection end surface 121. In addition, the passing end face 131 of the passing end fiber 13 needs to be ground, so that when the passing end fiber 13 is installed in the passing end groove 104, the passing end face 131 is parallel to the second plane 142 of the filter 14. Next, the incident-side optical fiber 11, the reflection-side optical fiber 12, and the pass-side optical fiber 13 are covered with glue. And checking the optical characteristics of the wavelength division multiplexer, and adjusting the positions of the incident end optical fiber 11, the reflection end optical fiber 12 and the passing end optical fiber 13 until the optical characteristics meet the requirements. And (4) preliminarily curing the glue by using an ultraviolet source machine, and checking whether the optical characteristics meet the specification after the glue is preliminarily cured. And (4) the optical characteristics are in accordance, and the glue is subjected to secondary curing by using a surface light source or an oven, so that the manufacture of the product is finished.
When the wavelength division multiplexer of this embodiment works, the light source is launched into filter 14 from incident end optical fiber 11, according to the characteristics of filter 14, the light of part wavelength has passed through filter 14 and has entered through end optical fiber 13, and the light of another part wavelength is received by reflection end optical fiber 12 through the reflection of filter 14 to realize the screening of light wavelength.
According to the wavelength division multiplexer, the incident end groove and the reflecting end groove which are intersected at the preset angle are formed in the substrate, the end groove and the incident end groove are coaxially formed and are respectively used for installing the incident end optical fiber, the reflecting end optical fiber and the passing end optical fiber, when the wavelength division multiplexer is assembled, the incident end optical fiber, the reflecting end optical fiber and the passing end optical fiber can be directly placed into the corresponding incident end groove, the reflecting end groove and the passing end groove, the angles of the incident end optical fiber, the reflecting end optical fiber and the passing end optical fiber do not need to be adjusted, and the assembling efficiency is improved. Meanwhile, the incident end face and the reflecting end face are parallel to the first plane, the end face is parallel to the second plane of the filter, light rays in the incident end optical fibers can be emitted into the filter at a reasonable angle, the light rays returned by the filter can be reflected back to the reflecting end optical fibers, and the optical fibers penetrating through the filter can be received by the passing end optical fibers. In addition, the wavelength division multiplexer is simple in structure, does not need to use a collimating lens, and simplifies the structure setting.
It should be noted that the above is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept also fall within the protection scope of the present invention.
Claims (6)
1. A wavelength division multiplexer, characterized by: including base plate, incident end optic fibre, reflection end optic fibre, through end optic fibre and filter, the first lateral wall of base plate is provided with incident end recess, reflection end recess and through the end recess, incident end recess with reflection end recess sets up with predetermineeing the angle is crossing, through the end recess with the coaxial setting of incident end recess, the filter install in incident end recess with the handing-over department of reflection end recess, incident end optic fibre is installed incident end recess, reflection end optic fibre is installed reflection end recess, install through end optic fibre pass through the end recess, incident end optic fibre is located the incident end terminal surface of handing-over department with the filter face towards the first plane parallel of handing-over department, reflection end optic fibre is located the reflection end terminal surface of handing-over department with first plane parallel, through end optic fibre pass through the end terminal surface with the filter face towards the second plane through the end recess Parallel.
2. A wavelength division multiplexer according to claim 1, wherein:
and the incident end fiber core at the incident end face is in contact with the reflecting end fiber core at the reflecting end face.
3. A wavelength division multiplexer according to claim 1, wherein:
the preset angle is 60 degrees.
4. A wavelength division multiplexer according to any one of claims 1 to 3, wherein:
the base plate is close to the joint part is provided with a filter plate groove, and the filter plate is arranged in the filter plate groove.
5. A wavelength division multiplexer according to any one of claims 1 to 3, wherein:
the first side wall is further provided with a standby groove, and the standby groove and the reflecting end groove are coaxially arranged.
6. A wavelength division multiplexer according to any one of claims 1 to 3, wherein:
the substrate is a glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921146632.3U CN210270269U (en) | 2019-07-19 | 2019-07-19 | Wavelength division multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921146632.3U CN210270269U (en) | 2019-07-19 | 2019-07-19 | Wavelength division multiplexer |
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| Publication Number | Publication Date |
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| CN210270269U true CN210270269U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921146632.3U Active CN210270269U (en) | 2019-07-19 | 2019-07-19 | Wavelength division multiplexer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275251A (en) * | 2019-07-19 | 2019-09-24 | 珠海艾文科技有限公司 | Wavelength division multiplexer |
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2019
- 2019-07-19 CN CN201921146632.3U patent/CN210270269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275251A (en) * | 2019-07-19 | 2019-09-24 | 珠海艾文科技有限公司 | Wavelength division multiplexer |
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