CN112882158A - Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions - Google Patents
Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions Download PDFInfo
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- CN112882158A CN112882158A CN201911205081.8A CN201911205081A CN112882158A CN 112882158 A CN112882158 A CN 112882158A CN 201911205081 A CN201911205081 A CN 201911205081A CN 112882158 A CN112882158 A CN 112882158A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 239000011521 glass Substances 0.000 claims abstract description 60
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 9
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- 238000000034 method Methods 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 3
- 238000003848 UV Light-Curing Methods 0.000 claims description 2
- 238000001723 curing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000007888 film coating Substances 0.000 claims 1
- 238000009501 film coating Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
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- 239000000835 fiber Substances 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
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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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29389—Bandpass filtering, e.g. 1x1 device rejecting or passing certain wavelengths
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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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
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Abstract
The invention discloses a miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions, which comprises: a glass plate; the first high-reflection film is arranged on one side surface of the glass flat plate and used for reflecting the optical signal incident to the surface of the glass flat plate; the N first WDM light filtering films have different working wavelengths and are arranged on the other side surface of the glass flat plate at intervals and are opposite to the first high reflection film; the M second high reflection films are arranged among the N first WDM filter films in a staggered mode at intervals and used for reflecting the light signals incident to the surfaces of the first high reflection films to the first high reflection films; the anti-reflection film is arranged at one end of the glass flat plate provided with the first high-reflection film or at one end of the glass flat plate provided with the N first WDM filter films, is arranged in parallel with the N first WDM filter films, and is used for inputting optical signals and outputting the optical signals input by the N first WDM filter films.
Description
Technical Field
The invention belongs to the field of optical communication and 5G application devices, and particularly relates to a miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions.
Background
Wavelength Division Multiplexing (WDM) is a technology in which optical carrier signals (carrying various information) with two or more different wavelengths are combined together at a transmitting end via a Multiplexer (also called a Multiplexer, MUX for short) and coupled to the same optical fiber of an optical line for transmission; at the receiving end, the optical carriers of various wavelengths are separated by a Demultiplexer (also called a Demultiplexer, DEMUX for short) and then further processed by an optical receiver to recover the original signal. This technique of simultaneously transmitting two or more optical signals with different wavelengths in the same optical fiber is called wavelength division multiplexing. The wavelength division multiplexing technology can realize the transmission of a single optical fiber to a plurality of wavelength signals, which can improve the transmission capacity of the optical fiber by times, and DWDM (dense wavelength division multiplexing) and CWDM (coarse wavelength division multiplexing) devices have been widely applied to the medium and long distance transmission of optical communication and the interconnection of data centers.
With the advent of 2019, which was identified as the source of 5G commercial initiation, the 5G era was accelerating, large-scale deployment of 5G networks is about to advance, and 5G communications are expected to spread rapidly in the next few years. As is well known, in 5G access and bearer networks, forwarding occupies a huge amount of fiber resources, so from the viewpoint of saving fiber cost, it is a common consensus in the industry to employ WDM technology, schematically shown in fig. 1 and 2, which has been written in the white paper of 5G bearer networks. With the large scale construction of 5G worldwide, the annual demand of the market for WDM devices is expected to be as high as tens of millions.
In WDM devices, in order to implement wavelength division Multiplexing (MUX) and Demultiplexing (DEMUX), the most core optical devices are MUX and DEMUX optical components, of which Z-BLOCK and AWG (arrayed waveguide grating) are the two most common and most typical MUX/DEMUX optical components. Compared with AWG, Z-BLOCK has the advantages of low insertion loss, wide spectral bandwidth, low channel crosstalk, low temperature sensitivity and the like.
A typical structure of the Z-BLOCK is shown in fig. 3, which includes a parallelogram glass plate polished on both front and back sides, the front side of the glass plate includes regions coated with antireflection film and high reflection film, the rear side of the glass plate includes regions coated with a plurality of WDM (wavelength division multiplexing) filters with different wavelengths or is attached with a plurality of filters coated with first WDM filters with different wavelengths, and the number of the filters or the number of the filters is 2 or more (usually 4 or 8). Collimated light beams with multiple wavelengths are emitted from an incident end according to a design angle, and light signals with different wavelengths are separated after being transmitted and reflected by a series of filter films, so that DEMUX is realized, and otherwise, MUX is realized.
The MUX and DEMUX optical components are used as core optical passive devices of optical communication and 5G networks, and the development trend that the MUX and DEMUX optical components are unchanged in the future when the MUX and DEMUX optical passive devices meet various standards in the industry and pursue miniaturization, low cost, easiness in mass production and high performance is achieved at the same time.
Disclosure of Invention
In view of the above-mentioned circumstances, an object of the present invention is to provide a miniaturized optical module capable of realizing wavelength division multiplexing and demultiplexing functions, which is miniaturized, has high performance, low cost, and is easy to mass-produce.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a miniaturized optical package capable of wavelength division multiplexing and demultiplexing, comprising:
a glass plate;
the first high-reflection film is arranged on one side surface of the glass flat plate and used for reflecting the optical signal incident to the surface of the glass flat plate;
the N first WDM light filtering films have different working wavelengths and are arranged on the other side surface of the glass flat plate at intervals and are opposite to the first high reflection film;
it still includes:
the M second high reflection films are arranged among the N first WDM filter films in a staggered mode at intervals and used for reflecting the light signals incident to the surfaces of the first high reflection films to the first high reflection films;
and the antireflection film is arranged at one end of the glass flat plate, provided with the first high-reflection film, or at one end of the glass flat plate, provided with the N first WDM filter films, is arranged in parallel with the N first WDM filter films, and is used for inputting optical signals and outputting the optical signals input by the N first WDM filter films.
As one possible implementation form, further, the antireflection film is arranged at one end of the glass plate, where the first high-reflection film is arranged, so that the input optical signal and the output optical signal are distributed on two sides of the glass plate.
As one possible implementation form, the antireflection film is disposed at one end of the glass plate where the N first WDM filter films are disposed, and is arranged side by side with the N first WDM filter films, so that the input optical signal and the output optical signal are distributed on the same side of the glass plate.
Preferably, a second high reflection film is further arranged between the antireflection film and the first WDM filter film close to the antireflection film.
Furthermore, the number of times that the light signals input through the N first WDM filter or antireflection film are reflected to the first high-reflection film on the second high-reflection film is more than one.
As one of possible implementation forms, further, the first high-reflection film is a high-reflection film array formed by juxtaposing L first high-reflection film sheets; h second WDM filter coatings with different working wavelengths are also arranged among the high-reflection film arrays in a staggered mode, and light signals input through the antireflection film are reflected once at least on the L first high-reflection films and the H second WDM filter coatings with different working wavelengths; by adopting the structure, when the optical fiber is used as a wavelength division multiplexing function, the input signal is distributed on two sides of the glass plate, and the output signal is distributed on one side of the glass plate; for the wavelength division demultiplexing function, an input signal is distributed on one side of the glass plate, and an output signal is distributed on both sides of the glass plate.
As one of possible embodiments, further, the glass plate has a parallelogram or trapezoid structure.
As one possible implementation form, the first high reflection film, the second high reflection film, the antireflection film and the first WDM filter film are attached to the glass plate by means of a patch.
Preferably, the patch is formed by attaching the first high-reflection film, the second high-reflection film, the antireflection film and the first WDM light filter film to the glass panel by using UV curing glue or thermosetting glue or dual curing glue, and the refractive index of the glue is close to that of the glass panel.
As one possible implementation form, further, the first high reflection film, the second high reflection film, the antireflection film and the first WDM filter film are all coated on the flat glass plate by a coating method.
As one of possible implementation forms, further, the N first WDM filter films are one or a mixture of SWDM, CWDM, LANWDM, DWDM and MWDM.
In addition, the scheme can realize the miniaturization of the size of the assembly and the optimization of the performance by designing the incident angle and the emergent pitch (pitch), wherein the incident angle ranges from 2 degrees to 20 degrees, and the pitch ranges from 0.25 mm to 2.5 mm.
By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that: the scheme of the invention can realize the wavelength division multiplexing or demultiplexing function of the input/output optical signals with two or more wavelengths, and compared with the prior Z-BLOCK type structure, the volume of the invention can be reduced by at least half under the condition of realizing the same function. Besides, the invention can be realized by adopting the clamp shielding coating process and the optical filter surface mounting process in the prior art, the invention can also adopt the semiconductor photoetching mask and the coating process to coat the corresponding antireflection film, high-reflection film and filter film on the polished glass parallel flat plate wafer (wafer) according to the design requirement, thereby easily realizing the mass and low-cost production of products.
Drawings
The invention will be further explained with reference to the drawings and the detailed description below:
FIG. 1 is one of the WDM solutions in the 5G frontend;
FIG. 2 shows a second WDM approach in the 5G frontend;
FIG. 3 is a schematic diagram of a typical Z-BLOCK structure;
FIG. 4 is a schematic diagram showing the structure and optical path of embodiment 1 of the present invention;
FIG. 5 is a schematic diagram of an expanded structure of embodiment 1 of the present invention, which shows a schematic diagram of reflecting 2 times the same high reflection film region on the right side;
FIG. 6 is a schematic diagram showing the structure and optical path of embodiment 2 of the present invention;
fig. 7 is a schematic diagram of the structure and optical path of embodiment 3 of the present invention.
Detailed Description
Example 1
As shown in fig. 4, the present invention provides a miniaturized optical assembly capable of performing wavelength division multiplexing and demultiplexing functions, comprising:
a glass plate 1;
a first high reflection film 2 disposed on one side of the glass plate 1 and reflecting an optical signal incident on the surface thereof;
n first WDM filter films 3 with different working wavelengths are arranged on the other side surface of the glass plate 1 at intervals and are opposite to the first high reflection film 2;
it still includes:
the M second high reflection films 4 are arranged among the N first WDM filter films 3 at intervals in a staggered mode and used for reflecting light signals incident to the surfaces of the first high reflection films 2;
and the antireflection film 5 is arranged at one end of the glass flat plate 1, which is provided with the first high-reflection film 2, and is used for inputting optical signals and outputting the optical signals input by the N first WDM filter films.
In the present embodiment 1, the input optical signal and the output optical signal are distributed on both sides of the glass panel 1.
In the optical path shown in fig. 4 of this embodiment, the optical signal specifically includes WDM collimated optical signals with 4 different center wavelengths λ 1, λ 2, λ 3 and λ 4, which are emitted into the glass plate 1 from the left region coated with the antireflection film 5 at a designed angle, and continuously transmitted and incident on the first filter film (one of the N first WDM filter films 3) forward, the optical signal with the center wavelength λ 1 is transmitted and output, the optical signals with the remaining wavelengths are reflected, and the reflected optical signals are respectively reflected three times by the left first high-reflection film 2, the right high-reflection film (one of the M second high-reflection films 4) and the left first high-reflection film 2, and then incident on the other WDM filter film (one of the N first WDM filter films 3), so that the optical signal with the center wavelength λ 2 is transmitted and output, and the optical signals with the remaining wavelengths are reflected. Similarly, optical signals with wavelengths λ 3 and λ 4 are also transmitted and output in sequence. The 4 light beams λ 1, λ 2, λ 3 and λ 4 are equally spaced, and the spacing d is determined by the incident angle θ, the refractive index n and the thickness T of the glass plate, as shown in fig. 4, d =4 × T Tan (b: (b))arcsin(sin(θ)/n)) Cos (θ), arcsin (x) is an arcsine function。
Whereas for a conventional Z-BLOCK structure, the spacing D =2 × T × Tan (arcsin (θ)/n) × cos (θ), with other conditions remaining unchanged, D is 1/2 for D. Obviously, to achieve the same beam interval D, the present embodiment can be reduced in size by at least half by reducing the thickness T of the glass plate by half to T/2. A comparison of the prior art Z-BLOCK structure with the structure of fig. 4 in accordance with embodiment 1 of the present invention is shown in conjunction with fig. 3, where it is apparent that the present invention is much smaller for the same incident and exit angles.
As shown in FIG. 5, in this embodiment, the high reflection film 2 can be expanded to reflect the reflected light N times (N ≧ 2, N is an integer) in the high reflection film 2. Then, the thickness T of the glass plate will become 1/(N +1) as compared with the conventional Z-BLOCK structure. As shown in fig. 5, it shows a schematic diagram of the first high reflection film 2 reflecting twice in the region, that is, the number of times that the optical signal input through the N first WDM filter 3 or antireflection film 5 is reflected to the first high reflection film 2 on the second high reflection film 4 is more than one.
In the processing process of this embodiment, a semiconductor lithography mask and film plating process may be adopted to perform lithography mask and film plating on the entire large glass Wafer (Wafer) for multiple times, so that mass and low-cost production of products may be realized. Or, it can also be realized by directly attaching a plurality of WDM filters respectively plated with different wavelengths to the corresponding uncoated areas by glue. The detailed process is not described herein.
Example 2
As shown in fig. 6, this embodiment is substantially the same as embodiment 1, except that the antireflection film 5 is disposed at one end of the glass plate 1 where the N first WDM filters 3 are disposed and is aligned with the N first WDM filters 3, so that the input optical signal and the output optical signal are distributed on the same side of the glass plate, and preferably, a second high-reflection film 4 is further disposed between the antireflection film 5 and the first WDM filter 3 adjacent thereto.
The implementation form of the embodiment can ensure that the incident light signal and the emergent light signal are distributed on one side, so as to meet the requirement of more miniaturized packaging of certain products, and the light path of the embodiment is almost the same except that the position of the input light signal, and the light path trend of the embodiment is shown in the visual schematic diagram of fig. 6, so that the light path is not repeated in text.
Similarly, in the present embodiment, the area of the second high-reflection film 4 may be enlarged, and the reflected light may be reflected N times (N ≧ 2, N is an integer) in the area of the high-reflection film 2. Then, the thickness T of the glass plate will also become 1/(N +1) as compared with the conventional Z-BLOCK structure.
The processing technology of this embodiment is substantially the same as that of embodiment 1, and is not described herein again.
Example 3
As shown in fig. 7, this embodiment is substantially the same as embodiment 1, except that the parallelogram glass parallel plate is changed into a trapezoidal glass plate 1, and the first high-reflective film 2 is a high-reflective film array formed by L first high-reflective film sheets in parallel; h second WDM filter coatings 6 with different working wavelengths are also arranged among the high-reflection film arrays in a staggered mode, and light signals input through the antireflection film 5 are reflected once on the L first high-reflection films and the H second WDM filter coatings 6 with different working wavelengths; with this structure, when it is used as a wavelength division multiplexing function, the input signal is distributed on both sides of the glass plate, and the output signal is distributed on one side of the glass plate 1; for the wavelength division demultiplexing function, an input signal is distributed on one side of the glass plate 1 and an output signal is distributed on both sides of the glass plate 1. This can make the product volume littleer, satisfies the miniaturized package needs of some products.
Similarly, in the present embodiment, the area of the second high-reflection film 4 may be enlarged, and the reflected light may be reflected N times (N ≧ 2, N is an integer) in the area of the second high-reflection film 2. Then, the thickness T of the glass plate will also become 1/(N +1) as compared with the conventional Z-BLOCK structure.
The processing technology of this embodiment is substantially the same as that of embodiment 1, and is not described herein again.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A miniaturized optical package capable of wavelength division multiplexing and demultiplexing, comprising:
the glass flat plate is of a parallelogram or trapezoid structure;
the first high-reflection film is arranged on one side surface of the glass flat plate and used for reflecting the optical signal incident to the surface of the glass flat plate;
the N first WDM light filtering films have different working wavelengths and are arranged on the other side surface of the glass flat plate at intervals and are opposite to the first high reflection film;
the method is characterized in that: it still includes:
the M second high reflection films are arranged among the N first WDM filter films in a staggered mode at intervals and used for reflecting the light signals incident to the surfaces of the first high reflection films to the first high reflection films;
and the antireflection film is arranged at one end of the glass flat plate, provided with the first high-reflection film, or at one end of the glass flat plate, provided with the N first WDM filter films, is arranged in parallel with the N first WDM filter films, and is used for inputting optical signals and outputting the optical signals input by the N first WDM filter films.
2. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 1, wherein: the antireflection film is arranged at one end of the glass flat plate, which is provided with the first high-reflection film.
3. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 1, wherein: the antireflection film is arranged at one end of the glass plate, which is provided with the N first WDM filter films, and is arranged in parallel with the N first WDM filter films.
4. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 3, wherein: and a second high reflection film is arranged between the antireflection film and the first WDM filter film close to the antireflection film.
5. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 1, wherein: the number of times that the optical signals input through the N first WDM filter films or antireflection films are reflected to the first high-reflection film on the second high-reflection film is more than one.
6. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 1, wherein: the first high-reflection film is a high-reflection film array formed by L first high-reflection films in parallel; and H second WDM filter coatings with different working wavelengths are also arranged among the high-reflection film arrays in a staggered manner, and light signals input through the antireflection film are reflected once at least on the L first high-reflection films and the H second WDM filter coatings with different working wavelengths.
7. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as claimed in any one of claims 1 to 6, wherein: the first high-reflection film, the second high-reflection film, the antireflection film and the first WDM filter film are attached to the glass flat plate in a patch mode.
8. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 7, wherein: the patch is formed by attaching the first high-reflection film, the second high-reflection film, the antireflection film and the first WDM light filter film on the glass panel by using UV curing glue or thermosetting glue or dual-curing glue, and the refractive index of the used glue is close to that of the glass panel.
9. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as claimed in any one of claims 1 to 6, wherein: the first high-reflection film, the second high-reflection film, the antireflection film and the first WDM light filtering film are coated on the glass flat plate in a film coating mode.
10. A miniaturized optical package capable of performing wavelength division multiplexing and demultiplexing functions as defined in claim 1, wherein: the N first WDM filter films are one or a mixture of SWDM, CWDM, LANWDM, DWDM and MWDM.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911205081.8A CN112882158A (en) | 2019-11-29 | 2019-11-29 | Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911205081.8A CN112882158A (en) | 2019-11-29 | 2019-11-29 | Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11422302B1 (en) | 2022-01-21 | 2022-08-23 | Browave Corporation | Multi-channel optical transmission device, manufacturing and method for using multi-channel optical transmission device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880773A (en) * | 2015-05-26 | 2015-09-02 | 苏州旭创科技有限公司 | Wavelength division multiplexing demultiplexing device and optical module |
| CN207216080U (en) * | 2017-06-28 | 2018-04-10 | 北极光电(深圳)有限公司 | A kind of integrated optical device of spot shaping |
| US20180275347A1 (en) * | 2017-03-24 | 2018-09-27 | Auxora, Inc. | Compact structure of integrated WDM device |
| CN208721830U (en) * | 2018-04-28 | 2019-04-09 | 福州高意光学有限公司 | A kind of optical package for realizing DEMUX function in WDM |
-
2019
- 2019-11-29 CN CN201911205081.8A patent/CN112882158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880773A (en) * | 2015-05-26 | 2015-09-02 | 苏州旭创科技有限公司 | Wavelength division multiplexing demultiplexing device and optical module |
| US20180275347A1 (en) * | 2017-03-24 | 2018-09-27 | Auxora, Inc. | Compact structure of integrated WDM device |
| CN207216080U (en) * | 2017-06-28 | 2018-04-10 | 北极光电(深圳)有限公司 | A kind of integrated optical device of spot shaping |
| CN208721830U (en) * | 2018-04-28 | 2019-04-09 | 福州高意光学有限公司 | A kind of optical package for realizing DEMUX function in WDM |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11422302B1 (en) | 2022-01-21 | 2022-08-23 | Browave Corporation | Multi-channel optical transmission device, manufacturing and method for using multi-channel optical transmission device |
| CN116520496A (en) * | 2022-01-21 | 2023-08-01 | 波若威科技股份有限公司 | Multichannel optical transmission device, method of making and using multichannel optical transmission device |
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