CN214375397U - Wavelength division demultiplexing component for optical device - Google Patents
Wavelength division demultiplexing component for optical device Download PDFInfo
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- CN214375397U CN214375397U CN202120537364.9U CN202120537364U CN214375397U CN 214375397 U CN214375397 U CN 214375397U CN 202120537364 U CN202120537364 U CN 202120537364U CN 214375397 U CN214375397 U CN 214375397U
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Abstract
The utility model discloses a wavelength division demultiplexing component for optical devices, which comprises a component tube shell, wherein a collimator, a wavelength division demultiplexer, a lens and a reflecting prism are sequentially arranged from the left side to the right side in the component tube shell, the top surface of the component tube shell is provided with an output opening, the collimator penetrates through the left inner wall of the component tube shell and is coaxial with the light input port of the wavelength division demultiplexer; the output light of the light output port of the wavelength division demultiplexer passes through the lens and then is reflected out of the output opening through the reflecting prism, and light path indicating lines are arranged on the parts, corresponding to the reflecting light path of the reflecting prism, of the front side surface and the rear side surface of the component tube shell. The utility model has simple installation process, low production difficulty and high production efficiency; can play a certain waterproof dustproof role, improve the product reliability.
Description
Technical Field
The utility model belongs to the technical field of optical communication, concretely relates to wavelength division demultiplexing subassembly for optical device.
Background
In the field of optical communication, in order to meet the requirement of high speed of optical devices and save optical fiber resources, a plurality of groups of low-speed laser chips are generally packaged together at a transmitting end, and a plurality of groups of light beams are multiplexed into the same optical fiber for transmission through a wavelength division multiplexing component; at the light receiving end, the wavelength division demultiplexer is correspondingly used to decompose the multi-path coupled light beam transmitted by the optical fiber into single-wavelength light beams to be received by the corresponding optical detectors respectively. In order to meet the requirements of miniaturization, high reliability and low cost, a cob (chip On board) packaging manner is often adopted for the multi-path high-speed optical device, that is, a chip and an optical path element are directly attached to a PCB substrate, and then electrical connection is realized through a lead bonding manner.
For the optical receiving end, in order to implement the wavelength division demultiplexing function, the existing structure generally attaches a collimator, a wavelength division demultiplexer, a lens, a reflector, an optical detector and the like to a PCBA board, wherein the reflector is suspended and fixed by a bracket, so that the reflector can reflect and convert multiple light beams decomposed by the wavelength division demultiplexer to a photosensitive surface of the optical detector which is also arranged on the PCBA board. By adopting the mode to realize the wavelength division demultiplexing function, each optical path element needs to be separately positioned and pasted, the process is complicated, the coupling of the optical paths needs active coupling, and the production efficiency is low; for PCBA boards with different layouts, mounting positions and positioning standards of optical path elements are determined according to actual layout conditions, and production parameters of production equipment are adjusted and calibrated correspondingly, so that on one hand, the operation is complicated, and the production efficiency is influenced; on the other hand, different PCBAs adopt different production processes or parameters, also do not benefit to batch management and control, lack the uniformity.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned weak point that exists among the prior art, the utility model provides a wavelength division demultiplexing subassembly for optical device.
The above object of the utility model is realized through following technical scheme:
a wavelength division demultiplexing component for optical devices comprises a component tube shell, wherein a collimator, a wavelength division demultiplexer, a lens and a reflecting prism are sequentially arranged from the left side to the right side in the component tube shell,
the top surface of the component tube shell is provided with an output opening, the collimator penetrates through the inner wall of the left side of the component tube shell, and the collimator is coaxial with the light input port of the wavelength division demultiplexer; the output light of the light output port of the wavelength division demultiplexer passes through the lens and then is reflected out of the output opening through the reflecting prism,
the front side and the rear side of the component package are provided with light path indicating lines corresponding to the portions of the reflection light paths of the reflection prisms.
The collimator, the wavelength division demultiplexer, the lens and the reflection prism are disposed on the inner wall of the bottom surface of the package case through the height-matching spacer as described above.
The front side surface or the rear side surface of the component tube shell is provided with a positioning boss corresponding to the inner wall of the wavelength division demultiplexer, and the wavelength division demultiplexer is tightly attached to the positioning boss.
As mentioned above the bottom surface inner wall of the component tube shell is provided with the mounting positioning reference line.
As described above, the lens is a lens array including lens units corresponding to the respective optical output ports of the wavelength division demultiplexer one to one.
The reflection prism is a triangular prism or a right-angled trapezoidal prism as described above.
The utility model discloses following beneficial effect has for prior art:
1. the collimator, the wavelength division demultiplexer, the lens and the reflecting prism are simple to mount, and the production efficiency is high;
2. the collimator, the wavelength division demultiplexer, the lens and the reflecting prism are all arranged in the component tube shell, so that a certain waterproof and dustproof effect can be achieved, and the reliability of a product is improved;
3. the mounting positioning reference line can be used for mounting and positioning a collimator, a wavelength division demultiplexer, a lens and a reflecting prism in the component tube shell;
4. the light path indicating line can indicate the position of the reflection light path of the reflection prism outside the component tube shell, and light path alignment is facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the optical path of the present invention;
in the figure, 1-component tube shell; 2-a collimator; 3-a wavelength division demultiplexer; 4-a lens; 5-a reflective prism; 6-positioning a boss; 7-output open; 8-bottom surface; 9-light path indicator; 51-reflective slope.
Detailed Description
To facilitate understanding and practice of the invention by those of ordinary skill in the art, the following detailed description of the invention is provided in connection with the examples, and it is to be understood that the examples described herein are for purposes of illustration and explanation only and are not intended to limit the invention.
Example 1
A wavelength division demultiplexing component for optical devices comprises a component tube shell 1, wherein a collimator 2, a wavelength division demultiplexer 3, a lens 4 and a reflecting prism 5 are sequentially arranged from the left side to the right side in the component tube shell 1,
an output opening 7 is formed in the top surface of the component tube shell 1, the collimator 2 penetrates through the inner wall of the left side of the component tube shell 1, and the collimator 2 is coaxial with a light input port of the wavelength division demultiplexer 3; the output light of the light output port of the wavelength division demultiplexer 3 passes through the lens 4 and then is reflected out of the output opening 7 through the reflecting prism 5.
The front and rear sides of the component housing 1 are provided with light path indicating lines 9 in the portions corresponding to the reflected light paths of the reflection prism 5.
The component tube shell 1 is of a metal cavity structure.
The collimator is used for receiving the optical signals transmitted by the optical fiber and collimating the converged light transmitted by the optical fiber into parallel light so as to be conveniently coupled with the subsequent wavelength division demultiplexer 3;
a wavelength division demultiplexer 3 for dividing the multi-path coupled light beam passing through the collimator 2 into a plurality of single-wavelength light beams and outputting the light beams;
the lens 4 is used for respectively converging the decomposed collimated light beams so as to improve the light receiving efficiency;
and a reflection prism 5 for turning the optical path passing through the lens 4 by 90 degrees.
In this embodiment, the outputs of the wavelength division demultiplexer 3 are four paths, and the lens 4 is a lens array including lens units corresponding to the optical output ports of the wavelength division demultiplexer 3 one by one. The optical axes of the four lens units are coaxial with the four optical output ports of the wavelength division demultiplexer 3, respectively. The reflecting prism 5 has a reflecting inclined plane 51, and the reflecting inclined plane 51 is disposed at 45 ° with the outgoing light beam of the lens 4, and is used for folding the light beam transmitted through the lens 4 by 90 ° and outgoing from the output opening 7.
The collimator 2, the wavelength division demultiplexer 3, the lens 4 and the reflecting prism 5 are arranged on the inner wall of the bottom surface of the component tube shell 1, and the matching of the light paths of the collimator 2, the wavelength division demultiplexer 3, the lens 4 and the reflecting prism 5 in height is guaranteed.
The front side or the back side of the component case 1 is provided with a positioning boss 6 corresponding to the inner wall of the wavelength division demultiplexer 3, and the wavelength division demultiplexer 3 is tightly attached to the positioning boss 6.
During production, the wavelength division demultiplexer 3 can be directly arranged to be clung to the positioning boss 6, so that the vertical distance between the wavelength division demultiplexer 3 and the front side surface or the rear side surface provided with the positioning boss 6 can be directly ensured, and the mounting and positioning difficulty can be reduced only by adjusting the horizontal position of the wavelength division demultiplexer 3; on the other hand, the mounting skew of the wavelength division demultiplexer 3 can be avoided.
For guaranteeing the subsides of each inside components and parts of subassembly tube 1 and pasting the dress location, the marking of accessible laser of 1 bottom surface inner wall of subassembly tube is provided with and pastes dress location reference line.
The reflecting prism 5 is a triangular prism or a right-angled trapezoidal prism.
The component tube shell 1, the collimator 2, the wavelength division demultiplexer 3, the lens 4 and the reflecting prism 5 are integrated integrally to form an integral wavelength division demultiplexing component.
The lateral wall of subassembly tube 1 is referred to as the subsides dress location of each components and parts in the subassembly tube 1, and the uniformity is good and positioning accuracy is high, can need not to adopt active coupling, directly adopts passive mode just can carry out the light path coupling to components and parts, and the process is simple, and the production degree of difficulty is low, and production efficiency is high.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A wavelength division demultiplexing component for an optical device comprises a component tube shell (1), and is characterized in that a collimator (2), a wavelength division demultiplexer (3), a lens (4) and a reflecting prism (5) are sequentially arranged from left side to right side in the component tube shell (1),
an output opening (7) is formed in the top surface of the component tube shell (1), the collimator (2) penetrates through the inner wall of the left side of the component tube shell (1), and the collimator (2) is coaxial with a light input port of the wavelength division demultiplexer (3); the output light of the light output port of the wavelength division demultiplexer (3) passes through the lens (4) and then is reflected out of an output opening (7) through the reflecting prism (5),
the front and rear sides of the component housing (1) are provided with light path indicating lines (9) in the sections corresponding to the reflected light paths of the reflection prism (5).
2. A wavelength division demultiplexing module for optical devices according to claim 1, wherein said collimator (2), wavelength division demultiplexer (3), lens (4) and reflecting prism (5) are disposed on the bottom inner wall of the module package (1) by means of height-matching spacers.
3. The wavelength division demultiplexing component for optical devices according to claim 1, wherein the front side or the rear side of the component package (1) is provided with a positioning boss (6) corresponding to the inner wall of the wavelength division demultiplexer (3), and the wavelength division demultiplexer (3) is attached to the positioning boss (6).
4. The wavelength division demultiplexing component for optical devices according to claim 1, wherein the bottom inner wall of the component package (1) is provided with a positioning reference line.
5. A wavelength division demultiplexing component for optical devices according to claim 1, wherein said lens (4) is a lens array comprising lens elements in one-to-one correspondence with the respective optical output ports of the wavelength division demultiplexer (3).
6. A wavelength demultiplexing assembly for optical devices according to claim 1, wherein said reflecting prism (5) is a triangular prism or a right-angled trapezoidal prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120537364.9U CN214375397U (en) | 2021-03-15 | 2021-03-15 | Wavelength division demultiplexing component for optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120537364.9U CN214375397U (en) | 2021-03-15 | 2021-03-15 | Wavelength division demultiplexing component for optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214375397U true CN214375397U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120537364.9U Active CN214375397U (en) | 2021-03-15 | 2021-03-15 | Wavelength division demultiplexing component for optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214375397U (en) |
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2021
- 2021-03-15 CN CN202120537364.9U patent/CN214375397U/en active Active
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