CN109521527A - A kind of Interleave muiltiplexing component element, Wave Decomposition multiplexing assembly and optical device - Google Patents
A kind of Interleave muiltiplexing component element, Wave Decomposition multiplexing assembly and optical device Download PDFInfo
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- CN109521527A CN109521527A CN201811445845.6A CN201811445845A CN109521527A CN 109521527 A CN109521527 A CN 109521527A CN 201811445845 A CN201811445845 A CN 201811445845A CN 109521527 A CN109521527 A CN 109521527A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 630
- 238000000354 decomposition reaction Methods 0.000 title abstract 2
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 238000005452 bending Methods 0.000 claims abstract description 18
- 238000001746 injection moulding Methods 0.000 claims description 7
- 229920006335 epoxy glue Polymers 0.000 claims description 5
- 230000003667 anti-reflective effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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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
- G02B6/26—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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- 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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The embodiment of the invention discloses a kind of Interleave muiltiplexing component element, Wave Decomposition multiplexing assembly and optical device, Interleave muiltiplexing component element includes: the first lens group and at least one first optical filter, wherein；First lens group includes at least two first collimation lenses, the first reflecting surface and the first condenser lens；First collimation lens is used to collimate optical signal for parallel optical signal, is incident to first reflecting surface or the first optical filter；First reflecting surface is set to the side of first optical filter, for total reflection parallel light signal to first optical filter；First optical filter carries out 90 degree of bending reflections for transmissive parallel optical signal or by parallel optical signal；First condenser lens is set to the other side of first optical filter, for parallel optical signal to be focused to optical fiber.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to a wavelength division multiplexing component, a wavelength division demultiplexing component and an optical device.
Background
In recent years, with the rapid development of data centers, the internet rate starts to rapidly advance from 100G to 400G. At present, 200G optical modules and 400G optical modules which are applied to medium and short distances in the market are mainly packaged through four-channel Small Form-factor plug (QSFP) +, and the packaging structure is complex. The 200G optical module and the 400G optical module with medium and short distances are mainly applied to the distances of 100 meters, 500 meters and 2000 meters, when the 200G optical module and the 400G optical module are applied to the short distance of 100 meters, the optical module adopts Multi-fiber Push On (MPO) multimode optical fiber, the MPO multimode optical fiber can only transmit one path of optical signal, although a Wavelength Division Multiplexing (WDM) component is not needed, the structure is simple, but the use amount of the optical fiber is large; when the optical module is applied to a short distance of 500 meters, the optical module adopts an MPO single-mode fiber, the MPO single-mode fiber can only transmit one path of optical signal, a wavelength division multiplexing component is not needed, the structure is simple, but the using amount of the optical fiber is larger; when the optical module is applied to a middle distance of 2000 meters, the optical module adopts a single mode fiber of a double fiber Connector (LC) ferrule, the single mode fiber can transmit multipath optical signals, the use amount of the fiber is small, but a wavelength division multiplexing component needs to be arranged in the single mode fiber, the wavelength division multiplexing component is complex in structure, the wavelength division multiplexing component is complex to package, and the optical module is complex to package.
Disclosure of Invention
In view of this, embodiments of the present invention provide a wavelength division multiplexing component, a wavelength division demultiplexing component and an optical module to solve at least one problem existing in the prior art, so as to solve the problem that the structure of the wavelength division multiplexing component or the wavelength division demultiplexing component is complex.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a wavelength division multiplexing component, where the wavelength division multiplexing component includes: a first lens group and at least one first filter, wherein;
the first lens group comprises at least two first collimating lenses, a first reflecting surface and a first focusing lens;
the first collimating lens is used for collimating an optical signal into a parallel optical signal and enabling the parallel optical signal to be incident to the first reflecting surface or the first optical filter;
the first reflecting surface is arranged on one side of the first optical filter and is used for totally reflecting the parallel optical signals to the first optical filter;
the first optical filter is used for transmitting the parallel optical signals or performing 90-degree bending reflection on the parallel optical signals;
the first focusing lens is arranged on the other side of the first optical filter and used for focusing the parallel optical signals to the optical fiber.
In one implementation, the first lens group is a plastic lens group formed by plastic injection molding.
In one implementation, the light-passing planes of the lenses in the first lens group are all plated with an antireflection film.
In one implementation, the first optical filter is bonded to the first lens group by epoxy glue.
In one implementation, the wavelength division multiplexing component further includes at least two transmit lasers for transmitting optical signals.
In a second aspect, an embodiment of the present invention provides a wavelength division demultiplexing component, including: a second lens group and at least one second filter, wherein;
the second lens group comprises a second collimating lens, a second reflecting surface and at least two second focusing lenses;
the second collimating lens is arranged on one side of the second optical filter and is used for collimating an optical signal into a parallel optical signal and enabling the parallel optical signal to be incident to the second optical filter;
the second optical filter is used for transmitting the parallel optical signals or bending and reflecting the parallel optical signals to the second focusing lens by 90 degrees;
the second reflecting surface is arranged on the other side of the second optical filter and is used for totally reflecting the parallel optical signals to the second focusing lens;
the second focusing lens is used for focusing the parallel light signals to the detector.
In one implementation, the second lens group is a plastic lens group formed by plastic injection molding.
In one implementation, the light-passing planes of the lenses in the second lens group are all plated with an antireflection film.
In one implementation, the wavelength division demultiplexing assembly further comprises at least two detectors for detecting optical signals.
In a third aspect, an embodiment of the present invention provides an optical device, where the optical device includes any one of the wavelength division multiplexing components described in the first aspect and any one of the wavelength division demultiplexing components described in the second aspect.
The wavelength division multiplexing component, the wavelength division demultiplexing component and the optical device provided by the embodiment of the invention comprise: a first lens group and at least one first filter, wherein; the first lens group comprises at least two first collimating lenses, a first reflecting surface and a first focusing lens; the first collimating lens is used for collimating an optical signal into a parallel optical signal and enabling the parallel optical signal to be incident to the first reflecting surface or the first optical filter; the first reflecting surface is arranged on one side of the first optical filter and is used for totally reflecting the parallel optical signals to the first optical filter; the first optical filter is used for transmitting parallel optical signals or bending and reflecting the parallel optical signals to the first focusing lens by 90 degrees; the first focusing lens is arranged on the other side of the first optical filter and used for focusing the parallel optical signals to the optical fiber. Through simple lens group and light filter structure, can realize intensive transmission and the multichannel transmission of light signal, solve the complicated problem of encapsulation.
In addition, the wavelength division multiplexing assembly, the wavelength division demultiplexing assembly and the optical device provided by the embodiment of the invention can be applied to various optical modules, so that the complexity of packaging the optical modules is effectively reduced, and the optical fiber consumption is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a wavelength division multiplexing module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wavelength division demultiplexing component according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another wavelength division multiplexing module according to an embodiment of the present invention;
FIG. 4 is a schematic view of another WDM component according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an optical device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following describes specific technical solutions of the present invention in further detail with reference to the accompanying drawings in the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example one
An embodiment of the present invention provides a wavelength division multiplexing component, and fig. 1 is a schematic structural diagram of a wavelength division multiplexing component provided in an embodiment of the present invention, and as shown in fig. 1, the wavelength division multiplexing component includes: a first lens group 102 and at least one first filter 103, wherein;
the first lens group 102 includes at least two first collimating lenses, a first reflective surface 1023, and a first focusing lens 1024;
the first collimating lens is configured to collimate an optical signal into a parallel optical signal, and the parallel optical signal is incident on the first reflecting surface 1023 or the first optical filter 103;
the first reflecting surface 1023 is arranged at one side of the first optical filter 103 and is used for totally reflecting the parallel optical signal to the first optical filter 103;
the first optical filter 103 is used for transmitting the parallel optical signal or performing 90-degree bending reflection on the parallel optical signal;
the first focusing lens 1024 is disposed on the other side of the first optical filter 103, and is configured to focus the parallel optical signal to an optical fiber.
It should be noted that, the first lens group 102 is a plastic lens group that can be formed by plastic injection molding, and the plastic structure of the first lens group 102 can save the cost of the assembly.
In addition, the light-passing planes of the lenses in the first lens group 102 may be coated with an anti-reflection film, which can prevent the lenses in the first lens group 102 from reflecting light signals.
It should be noted that the first filter 103 may be adhered to the first lens group 102 by epoxy glue.
The first reflecting surface 1023 may be a first inclined surface or a third filter. When the first reflecting surface 1023 is a first inclined surface, the first inclined surface can be made of plastic, which can greatly reduce the manufacturing cost of the wavelength division multiplexing module.
It should be noted that the first optical filter 103 is configured to match different wavelengths, if the wavelength of the optical signal corresponds to the wavelength matched with the first optical filter 103, the first optical filter 103 performs 90-degree bending reflection on the optical signal, and if the wavelength of the optical signal does not correspond to the wavelength matched with the first optical filter 103, the first optical filter 103 directly transmits the optical signal. Thus, the parallel optical signals focused by the first focusing lens 1024 may be: the parallel optical signals transmitted by the first optical filter 103, and/or the parallel optical signals reflected by the first optical filter 103 by 90 degrees.
In addition, the number of the first optical filters can be one less than that of the first collimating lenses, namely, if the number of the first collimating lenses is N, the number of the first optical filters is N-1, wherein N is more than or equal to 2.
Specifically, if the number of the first collimating lenses is N, the first collimating lens closest to the first reflecting surface is a first collimating lens 1, the first optical filter closest to the first reflecting surface is a first optical filter 1, and the first collimating lens closest to the first optical filter 1 is a first collimating lens 2; one side of the first optical filter 1 is a first reflecting surface, the other side of the first optical filter 1 is a first optical filter 2, and a first collimating lens closest to the first optical filter 2 is a first collimating lens 3; one side of the first optical filter 2 is a first optical filter 1, the other side is a first optical filter 3, and a first collimating lens closest to the first optical filter 3 is a first collimating lens 4; in the same way, one side of the first optical filter N-2 is a first optical filter N-3, the other side of the first optical filter N-2 is a first optical filter N-1, and the first collimating lens closest to the first optical filter N-2 is a first collimating lens N-1; one side of the first optical filter N-1 is a first optical filter N-2, the other side is a first focusing lens 1024, and the first collimating lens closest to the first optical filter N-1 is a first collimating lens N.
The first optical signal is collimated by a first collimating lens 1 to form a parallel first parallel optical signal, the first parallel optical signal is totally reflected to a first optical filter 1 by a first reflecting surface, the first optical filter 1 transmits the first parallel optical signal to a first optical filter 2, the first optical filter 2 transmits the first parallel optical signal to a first optical filter 3, and so on, the first optical filter N-2 transmits the first parallel optical signal to a first optical filter N-1, and the first optical filter N-1 transmits the first parallel optical signal to a first focusing lens 1024 for focusing;
the second optical signal is collimated by a first collimating lens 2 to form a parallel second parallel optical signal, a first optical filter 1 closest to the first collimating lens 2 bends and reflects the second parallel optical signal by 90 degrees and reflects the second parallel optical signal to a first optical filter 2, the first optical filter 2 transmits the second parallel optical signal to a first optical filter 3, and so on, the first optical filter N-2 transmits the N-2 parallel optical signal to a first optical filter N-1, the first optical filter N-1 transmits the N-1 parallel optical signal to a first focusing lens 1024 for focusing, wherein the N-2 parallel optical signal is the parallel optical signal formed by collimating the N-2 optical signal by a first collimating lens N-2, the N-1 parallel optical signal is the N-1 optical signal and is collimated by a first collimating lens N-1, the formed parallel optical signal; therefore, the first optical filter i transmits the first to ith parallel optical signals to the first optical filter i +1, bends and reflects the (i + 1) th parallel optical signal by 90 degrees, and reflects the i +1 th parallel optical signal to the first optical filter i + 1;
in the same way, the N-1 optical signal is collimated by the first collimating lens N-1 to form a parallel N-1 parallel optical signal, the first optical filter N-2 closest to the first collimating lens N-1 bends and reflects the N-1 parallel optical signal by 90 degrees to the first optical filter N-1, and the first optical filter N-1 transmits the N-1 parallel optical signal to the first focusing lens 1024 for focusing;
the Nth optical signal is collimated through a first collimating lens N to form a parallel Nth parallel optical signal, and a first optical filter N-1 closest to the first collimating lens N bends and reflects the Nth parallel optical signal by 90 degrees to a first focusing lens 1024 for focusing;
finally, the first focusing lens 1024 focuses the first to nth parallel optical signals into the optical fiber for transmission.
In addition, the wavelength division multiplexing component further comprises at least two emitting lasers for emitting optical signals. The number of the emission lasers corresponds to the number of the first collimating lenses, specifically, the emission lasers and the first collimating lenses correspond one to one, the wavelength of an optical signal emitted by each emission laser can be matched with the first optical filter corresponding to the closest first collimating lens, and the first optical filter corresponding to the first collimating lens is the first optical filter closest to the first collimating lens.
According to the embodiment of the invention, through the simple lens group and the optical filter structure, the dense transmission of optical signals can be realized, and the problem of complex packaging is solved.
Example two
The wavelength division demultiplexing component provided in the first embodiment corresponds to the wavelength division multiplexing component provided in the first embodiment in structure, so as to realize a demultiplexing function of multiplexing wavelengths. Fig. 2 is a schematic structural diagram of a wavelength division demultiplexing component according to an embodiment of the present invention, and as shown in fig. 2, the wavelength division demultiplexing component includes: a second lens group 201 and at least one second filter 202, wherein;
the second lens group 201 comprises a second collimating lens 2011, a second reflecting surface 2012 and at least two second focusing lenses;
the second collimating lens 2011 is disposed at one side of the second optical filter 202, and is configured to collimate an optical signal into a parallel optical signal, and the parallel optical signal is incident to the second optical filter 202;
the second optical filter 202 is configured to transmit the parallel optical signal or bend the parallel optical signal by 90 degrees and reflect the parallel optical signal to the second focusing lens;
the second reflecting surface 2012 is disposed on the other side of the second optical filter 202 and is configured to totally reflect the parallel optical signal to the second focusing lens;
the second focusing lens is used for focusing the parallel light signals to the detector.
It should be noted that the second lens group 201 is a plastic lens group that can be formed by plastic injection molding, and the plastic structure of the second lens group 201 can save the cost of the components.
In addition, the light-passing planes of the lenses in the second lens group 201 may be coated with an anti-reflection film capable of avoiding the lenses in the second lens group 201 from reflecting the optical signals.
The second reflecting surface 2012 can be specifically a second inclined surface or a fourth optical filter. When the second reflecting surface 2012 is a second inclined surface, the second inclined surface may be made of plastic, which can greatly reduce the manufacturing cost of the wavelength division demultiplexing assembly.
It should be noted that the second optical filter 202 is configured to match different wavelengths, if the wavelength of the optical signal corresponds to the wavelength matched with the second optical filter 202, the second optical filter 202 performs 90-degree bending reflection on the optical signal, and if the wavelength of the optical signal does not correspond to the wavelength matched with the second optical filter 202, the second optical filter 202 directly transmits the optical signal. Therefore, if there are at least two second filters 202, the second filter 202 transmits the parallel optical signal to the next adjacent second filter, or transmits the parallel optical signal to the second reflection surface 2012.
In addition, the number of the second optical filters may be one less than the number of the second focusing lenses, i.e., if the number of the second focusing lenses is M, the number of the second optical filters is M-1, wherein M ≧ 2.
Specifically, if the number of the second focusing lenses is M, the second filter closest to the second collimating lens is the second filter 1, and the second focusing lens closest to the second filter 1 is the second focusing lens 1; one side of the second optical filter 1 is a second collimating lens 2011, the other side is a second optical filter 2, and the second focusing lens closest to the second optical filter 2 is the second focusing lens 2; one side of the second optical filter 2 is a second optical filter 1, the other side is a second optical filter 3, and the second focusing lens closest to the second optical filter 3 is a second focusing lens 3; in the same way, one side of the second optical filter M-2 is a second optical filter M-3, the other side is a second optical filter M-1, and the second focusing lens closest to the second optical filter M-2 is a second focusing lens M-2; one side of the second optical filter M-1 is a second optical filter M-2, the other side is a second reflection surface, the second focusing lens closest to the second optical filter M-1 is a second focusing lens M-1, and the second focusing lens closest to the second reflection surface 2014 is a second focusing lens M.
The second collimating lens 2011 collimates the first to mth optical signals subjected to wavelength multiplexing into first to mth parallel optical signals, and the first to mth parallel optical signals are incident to the second optical filter 1; the second optical filter 1 performs 90-degree bending reflection on the first parallel optical signal, and reflects the first parallel optical signal to a second focusing lens 1 closest to the second optical filter 1, and the second optical filter 1 transmits the second parallel optical signal to the Mth parallel optical signal to a second optical filter 2;
the second optical filter 2 bends and reflects the second parallel optical signal by 90 degrees to a second focusing lens 2 closest to the second optical filter 2, and the second optical filter 2 transmits the third parallel optical signal to the Mth parallel optical signal to a second optical filter 3; therefore, the second optical filter i performs 90-degree bending reflection on the ith parallel optical signal, and reflects the ith parallel optical signal to the second focusing lens i closest to the second optical filter i, and the second optical filter i transmits the ith +1 parallel optical signal to the mth parallel optical signal to the second optical filter i + 1;
in analogy, the second optical filter M-2 bends and reflects the M-2 parallel optical signal by 90 degrees to the second focusing lens M-2 closest to the second optical filter M-2, and the second optical filter M-2 transmits the M-1 parallel optical signal and the M-parallel optical signal to the second optical filter M-1;
the second optical filter M-1 bends and reflects the M-1 parallel optical signal by 90 degrees to a second focusing lens M-1 closest to the second optical filter M-1, and the second optical filter M-1 transmits the M parallel optical signal to a second reflection surface 2012;
the second reflecting surface 2012 totally reflects the mth parallel optical signal to the second focusing lens M;
and finally, focusing the parallel light signals to the detector by the second focusing lens.
It should be noted that the wavelength division demultiplexing module further includes at least two detectors for detecting optical signals.
According to the embodiment of the invention, through the simple lens group and the optical filter structure, the dense transmission of optical signals can be realized, and the problem of complex packaging is solved.
EXAMPLE III
Fig. 1 is a schematic structural diagram of a wavelength division multiplexing component according to an embodiment of the present invention, and as shown in fig. 1, the wavelength division multiplexing component includes an emission laser group 101, a first plastic lens group 102, and a first optical filter 103; wherein,
the transmitting laser group 101 comprises a transmitting laser 1011 and a transmitting laser 1012, wherein the transmitting laser 1011 is used for transmitting a first optical signal, and the transmitting laser 1012 is used for transmitting a second optical signal;
the first plastic lens group 102 includes a first collimating lens 1021, a first collimating lens 1022, a first inclined surface 1023, and a first focusing lens 1024;
the first collimating lens 1021 is used for collimating the first optical signal emitted by the emitting laser 1011 into a first parallel optical signal, and the first parallel optical signal is incident on the first inclined surface 1023;
the first collimating lens 1022 is configured to collimate a second optical signal emitted by the emitting laser 1012 into a second parallel optical signal, and the second parallel optical signal is incident on the first optical filter 103;
the first inclined surface 1023 is arranged at one side of the first optical filter 103 and is used for totally reflecting the first parallel optical signal to the first optical filter 103;
the first optical filter 103 is configured to transmit a first parallel optical signal to the first focusing lens 1024, and bend and reflect a second parallel optical signal by 90 degrees to the first focusing lens 1024;
the first focusing lens 1024 is disposed on the other side of the first optical filter 103, and is configured to focus the first parallel optical signal and the second parallel optical signal to an optical fiber, and transmit the optical fiber.
The Emitting Laser group 101 may be a Vertical Cavity Surface Emitting Laser (VCSEL) or an edge Emitting Laser. The vcsel emits light from the top surface, and when the set of emission lasers 101 in this embodiment is specifically vcsel, fig. 1 is a front cross-sectional view of the wavelength division multiplexing module structure, and the vcsel is located below the first plastic lens group 102. The edge-emitting Laser includes an fp (Fabry Perot) Laser, a Distributed Feedback (DFB) Laser, and an Electro-absorption Modulated Laser (EML), where the edge-emitting Laser emits a light signal from an edge, and when the emitting Laser group 101 in this embodiment is specifically an edge-emitting Laser, fig. 1 is a top view of a wavelength division multiplexing module structure, the edge-emitting Laser and the first plastic lens group 102 are located on the same horizontal plane. When the wavelength division multiplexing component further comprises the emission laser group 101, the vertical cavity surface emission laser is arranged below the plastic lens group, or the edge emission laser is arranged on the same horizontal plane with the plastic lens group, so that the space required for packaging the wavelength division multiplexing component can be effectively reduced.
In order to avoid the lens reflected light signals in the first plastic lens group 102, the light transmission planes (light contact planes) of all the lenses in the first plastic lens group 102 may be subjected to light enhancement processing, for example, the collimator lenses in the first plastic lens group 102 may be subjected to plating processing. In addition, the first inclined surface 1023 may be a flat surface made of a material capable of reflecting an optical signal, such as a flat surface made of plastic.
Here, the emitting laser group 101 includes an emitting laser 1011 and an emitting laser 1012, the emitting laser 1011 is far away from the first optical filter 103 relative to the emitting laser 1012, when the emitting laser 1011 emits a first optical signal, the first optical signal is collimated by the first collimating lens 1021 closest to the emitting laser 1011 in the first plastic lens group 102 to form a parallel first parallel optical signal, the first parallel optical signal is totally reflected to the first optical filter 103 by the first inclined plane 1023 in the first plastic lens group 102, the first optical filter 103 transmits the first parallel optical signal, and the first parallel optical signal transmitted by the first optical filter 103 is focused by the first focusing lens 1024 in the first plastic lens group 102, so that the transmitted first parallel optical signal is focused into the optical fiber 104 for transmission. After the emitting laser 1012 emits the second optical signal, the second optical signal is collimated by the first collimating lens 1022 closest to the emitting laser 1012 in the first plastic lens group 102 to form a parallel second parallel optical signal, the second parallel optical signal is bent and reflected by 90 degrees through the first optical filter 103 and reflected to the first focusing lens 1024 in the first plastic lens group 102, and the first focusing lens 1024 focuses the second parallel optical signal, so that the second parallel optical signal is focused into the optical fiber 104 for transmission. After the first optical signal and the second optical signal pass through the first plastic lens group 102 and the first optical filter 103 to perform optical path adjustment, the first optical signal and the second optical signal can be transmitted through one optical fiber, so that the function of multiplexing two wavelengths is realized. In the embodiment, the dense transmission of optical signals can be realized through the simple plastic lens group and the optical filter structure, and the problem of complex packaging is solved.
Example four
The wavelength division demultiplexing component provided in the first embodiment corresponds to the wavelength division multiplexing component provided in the first embodiment in structure, so as to realize a demultiplexing function of multiplexing wavelengths. Fig. 2 is a schematic structural diagram of a wavelength division demultiplexing assembly according to an embodiment of the present invention, as shown in fig. 2, the wavelength division demultiplexing assembly includes a second plastic lens group 201, a second optical filter 202, and a detector group 203; wherein,
the second plastic lens group 201 includes a second collimating lens 2011, a second tilted surface 2012, a second focusing lens 2013, and a second focusing lens 2014;
the second collimating lens 2011 is disposed at one side of the second optical filter 202, and is configured to collimate a first optical signal output by an optical fiber into a first parallel optical signal, collimate a second optical signal output by the optical fiber into a second parallel optical signal, and inject the first parallel optical signal and the second parallel optical signal into the second optical filter 202;
the second optical filter 202 is configured to bend and reflect the first parallel optical signal by 90 degrees to the second focusing lens 2013, and transmit the second parallel optical signal to the second inclined surface 2012;
the second inclined surface 2012 is disposed on the other side of the optical filter 202, and is configured to totally reflect the second parallel optical signal to the second focusing lens 2014;
the second focusing lens 2013 is used for focusing the first parallel optical signal into a third optical signal to the detector group 203;
the second focusing lens 2014 is used for focusing the second parallel optical signal into a fourth optical signal to the detector group 203;
the detector set 203 is configured to detect a third optical signal or a fourth optical signal focused onto the detector set 203.
In order to avoid the lens reflected light signals in the second plastic lens group 201, the light transmission planes (light contact planes) of all the lenses in the second plastic lens group 201 may be subjected to light enhancement processing, for example, the collimator lenses in the second plastic lens group 201 may be subjected to plating processing.
Here, the first optical signal and the second optical signal output by the optical fiber 204 pass through the second collimating lens 2011 in the plastic lens group 201 closest to the optical fiber 204, where the first optical signal and the second optical signal in this embodiment are optical signals multiplexed by wavelength, so that the first optical signal and the second optical signal output by the optical fiber 204 are collimated into a first parallel optical signal and a second parallel optical signal, the first parallel optical signal is incident on the second optical filter 202, the second optical filter 202 performs 90-degree bending reflection on the first parallel optical signal, and reflects the first parallel optical signal to the second focusing lens 2013 in the second plastic lens group 201 closest to the second optical filter 202, and the second focusing lens 2013 focuses the first parallel optical signal on the detector group 203. After the second parallel optical signal is incident on the second optical filter 202, the second optical filter 202 transmits the second parallel optical signal to the second inclined surface 2012 of the second plastic lens assembly 201, the second inclined surface 2012 of the second plastic lens assembly 201 totally reflects the second parallel optical signal to the second focusing lens 2014 closest to the second inclined surface 2012, and the second focusing lens 2014 focuses the second parallel optical signal onto the detector set 203. The first optical signal and the second optical signal after wavelength multiplexing are output through optical fibers, and then are subjected to optical signal detection through the second plastic lens group 201 and the optical path adjustment of the optical filter 202 and the detector group 203, so that the function of wavelength demultiplexing is realized. In the embodiment, the dense transmission of optical signals can be realized through the simple plastic lens group and the optical filter structure, and the problem of complex packaging is solved.
EXAMPLE five
Fig. 3 is a schematic structural diagram of a wavelength division multiplexing component according to an embodiment of the present invention, and as shown in fig. 3, the wavelength division multiplexing component includes an emission laser group 301, a first plastic lens group 302, and a first filter group 303; wherein,
the emission laser group 301 includes an emission laser 3011, an emission laser 3012, an emission laser 3013, and an emission laser 3014, where the emission laser 3011 is configured to emit a first optical signal, the emission laser 3012 is configured to emit a second optical signal, the emission laser 3013 is configured to emit a third optical signal, and the emission laser 3014 is configured to emit a fourth optical signal;
the first plastic lens group 302 includes a first collimating lens 3021, a first collimating lens 3022, a first collimating lens 3023, a first collimating lens 3024, one first inclined surface 3025, and one first focusing lens 3026;
the first filter set 303 includes three first filters, namely a first filter 3031, a first filter 3032 and a first filter 3033;
the first collimating lens 3021 is closest to the first inclined surface 3025 than the other first collimating lenses, the first collimating lens 3022 is closest to the first optical filter 3031 than the other first collimating lenses, the first collimating lens 3023 is closest to the first optical filter 3032 than the other first collimating lenses, and the first collimating lens 3024 is closest to the first optical filter 3033 than the other first collimating lenses;
one side of the first optical filter 3031 is a first inclined plane 3025, and the other side is a first optical filter 3032; one side of the first optical filter 3032 is a first optical filter 3031, and the other side is a first optical filter 3033; one side of the first filter 3033 is a first filter 3032, and the other side is a first focusing lens 3026;
the first collimating lens 3021 is configured to collimate a first optical signal emitted by the emitting laser 3011 into a first parallel optical signal, and to be incident on the first inclined surface 3025;
the first collimating lens 3022 is configured to collimate a second optical signal emitted by the emitting laser 3012 into a second parallel optical signal, and the second parallel optical signal is incident on the first optical filter 3031;
the first collimating lens 3023 is configured to collimate a third optical signal emitted by the emitting laser 3013 into a third parallel optical signal, and the third parallel optical signal is incident to the first optical filter 3032;
the first collimating lens 3024 is configured to collimate a fourth optical signal emitted by the emitting laser 3014 into a fourth parallel optical signal, and the fourth parallel optical signal is incident on the first optical filter 3033;
the first inclined surface 3025 is disposed on one side of the first optical filter 3031, and is configured to totally reflect the first parallel optical signal to the first optical filter 3031;
the first optical filter 3031 is configured to transmit a first parallel optical signal to the first optical filter 3032, and bend and reflect a second parallel optical signal by 90 degrees to the first optical filter 3032;
the first optical filter 3032 is disposed on the other side of the first optical filter 3031, and is configured to transmit a first parallel optical signal and a second parallel optical signal to the first optical filter 3033, and bend and reflect a third parallel optical signal by 90 degrees to the first optical filter 3033;
the first optical filter 3033 is disposed on the other side of the first optical filter 3032, and is configured to transmit a first parallel optical signal, a second parallel optical signal and a third parallel optical signal to the first focusing lens 3026, and bend a fourth parallel optical signal by 90 degrees and reflect the fourth parallel optical signal to the first focusing lens 3026;
the first focusing lens 3026 is disposed on the other side of the first optical filter 3033, and is configured to focus the first parallel optical signal, the second parallel optical signal, the third parallel optical signal, and the fourth parallel optical signal onto an optical fiber.
Here, the emitting laser group 301 includes an emitting laser 3011, an emitting laser 3012, an emitting laser 3013, and an emitting laser 3014, the emitting laser 3011 is closest to the first inclined surface 3025 with respect to the other emitting lasers, when the transmitting laser 3011 transmits a first optical signal, the first optical signal is collimated by a first collimating lens 3021 closest to the transmitting laser 3011 in the first plastic lens group 302 to form a parallel first parallel optical signal, the first parallel optical signal is totally reflected to the first optical filter 3031 by the first inclined surface 3025 on the first plastic lens group 302, the first optical filter 3031 transmits the first parallel optical signal to the first optical filter 3032, the first optical filter 3032 transmits the first parallel optical signal to the first optical filter 3033, the first optical filter 3033 transmits the first parallel optical signal to the first focusing lens 3026 for focusing, so that the transmitted first parallel optical signal is focused into the optical fiber 304 for transmission;
when the transmitting laser 3012 transmits a second optical signal, the second optical signal is collimated by the first collimating lens 3022 closest to the transmitting laser 3012 in the first plastic lens group 302 to form a parallel second parallel optical signal, the second parallel optical signal is reflected by the first optical filter 3031 closest to the first collimating lens 3022 through 90-degree bending, and is reflected to the first optical filter 3032, the first optical filter 3032 transmits the second parallel optical signal to the first optical filter 3033, and the first optical filter 3033 transmits the second parallel optical signal to the focusing lens 3026 in the first plastic lens group 302 for focusing, so that the second parallel optical signal is focused into the optical fiber 304 for transmission;
when the transmitting laser 3013 transmits a third optical signal, the third optical signal is collimated by the first collimating lens 3023 closest to the transmitting laser 3013 in the first plastic lens group 302 to form a parallel third parallel optical signal, the third parallel optical signal is bent and reflected by 90 degrees by the first optical filter 3032 closest to the first collimating lens 3023 and reflected to the first optical filter 3033, and the first optical filter 3032 transmits the third parallel optical signal to the first focusing lens 3026 in the first plastic lens group 302 for focusing, so that the third parallel optical signal is focused into the optical fiber 304 for transmission;
after the emitting laser 3014 emits the fourth optical signal, the fourth optical signal is collimated by the first collimating lens 3024 closest to the emitting laser 3014 in the first plastic lens group 302 to form a parallel fourth parallel optical signal, and the fourth parallel optical signal is reflected by the first optical filter 3033 closest to the first collimating lens 3024 through 90 degree bending and reflected to the first focusing lens 3026 in the first plastic lens group 302 for focusing, so that the fourth parallel optical signal is focused into the optical fiber 304 for transmission.
After the first optical signal, the second optical signal, the third optical signal, and the fourth optical signal are subjected to optical path adjustment through the first plastic lens group 302 and the first filter set 303, the optical signals can be transmitted through one optical fiber, so that the four wavelength multiplexing functions are realized. In the embodiment, the dense transmission of optical signals can be realized through the simple plastic lens and the optical filter structure, and the problem of complex packaging is solved.
EXAMPLE six
The wavelength division demultiplexing component provided in the first embodiment corresponds to the wavelength division multiplexing component provided in the first embodiment in structure, so as to realize a demultiplexing function of multiplexing wavelengths. Fig. 4 is a schematic structural diagram of a wavelength division demultiplexing assembly according to an embodiment of the present invention, as shown in fig. 4, the wavelength division demultiplexing assembly includes a second plastic lens group 401, a second filter group 402, and a detector group 403; wherein,
the second plastic lens group 401 includes a second collimating lens 4011, a second inclined surface 4012, a second focusing lens 4013, a second focusing lens 4014, a second focusing lens 4015, and a second focusing lens 4016;
the second filter set 402 includes three second filters, which are a second filter 4021, a second filter 4022, and a second filter 4023;
the second focusing lens 4013 is closest to the second filter 4021 compared with other second focusing lenses; the second focusing lens 4014 is closest to the second optical filter 4022 compared to other second focusing lenses, the second focusing lens 4015 is closest to the second optical filter 4023 compared to other second focusing lenses, and the second focusing lens 4016 is closest to the second inclined surface 4012 compared to other second focusing lenses;
one side of the second optical filter 4021 is a second collimating lens 4011, and the other side is a second optical filter 4022; one side of the second filter 4022 is a second filter 4021, and the other side is a second filter 4023; one side of the second optical filter 4023 is a second optical filter 4022, and the other side is a second inclined surface 4012;
the second collimating lens 4011 is disposed on one side of the second optical filter 4021, and is configured to collimate four optical signals output by an optical fiber into a first parallel optical signal, a second parallel optical signal, a third parallel optical signal, and a fourth parallel optical signal, where all the optical signals are incident to the second optical filter 4021;
the second optical filter 4021 is configured to transmit the second parallel optical signal, the third parallel optical signal, and the fourth parallel optical signal to the second optical filter 4022, and bend the first parallel optical signal by 90 degrees and reflect the first parallel optical signal to the second focusing lens 4013;
the second optical filter 4022 is disposed on the other side of the second optical filter 4021, and is configured to transmit the third parallel optical signal and the fourth parallel optical signal to the second optical filter 4023, and bend the second parallel optical signal by 90 degrees and reflect the second parallel optical signal to the second focusing lens 4014;
the second optical filter 4023 is disposed on the other side of the second optical filter 4022, and is configured to transmit a fourth parallel optical signal to the second inclined surface 4012, and bend the third parallel optical signal by 90 degrees and reflect the third parallel optical signal to the second focusing lens 4015;
the second inclined surface 4012 is disposed on the other side of the second optical filter 4023, and is configured to totally reflect the fourth parallel optical signal to the second focusing lens 4016;
the second focusing lens 4013, the second focusing lens 4014, the second focusing lens 4015 and the second focusing lens 4016 are used for focusing the parallel light signals into light signals to the detector group 403;
the detector set 403 is used to detect the optical signals focused onto the detector set 403.
It should be noted that, the first optical signal, the second optical signal, the third optical signal, and the fourth optical signal output by the optical fiber 404 pass through the second collimating lens 4011 in the second plastic lens group 401 closest to the optical fiber 404, where the first optical signal, the second optical signal, the third optical signal, and the fourth optical signal are optical signals after wavelength multiplexing, the second collimating lens 4011 collimates the first optical signal, the second optical signal, the third optical signal, and the fourth optical signal output by the optical fiber 404 into a first parallel optical signal, a second parallel optical signal, a third parallel optical signal, and a fourth parallel optical signal, respectively, and inputs the first optical signal, the second optical signal, the third parallel optical signal, and the fourth parallel optical signal into the second optical filter 4021, and when the first parallel optical signal enters the second optical filter 4021, the first parallel optical signal undergoes 90-degree bending reflection by the second optical filter 4021 and is reflected to the second focusing plastic lens 4013 in the second plastic lens group 401 closest to the second optical filter 4021, the second focusing lens 4013 focuses the first parallel optical signal into optical signals to the detector group 403;
when the second parallel optical signal is incident on the second optical filter 4021, the second optical filter 4021 transmits the second parallel optical signal to the second optical filter 4022, the second optical filter 4022 bends and reflects the second parallel optical signal by 90 degrees, and reflects the second parallel optical signal to the second focusing lens 4014 in the second plastic lens group 401 closest to the second optical filter 4022, and the second focusing lens 4014 focuses the second parallel optical signal into an optical signal to the detector group 403;
when the third parallel optical signal is incident on the second optical filter 4021, the second optical filter 4021 transmits the third parallel optical signal to the second optical filter 4022, the second optical filter 4022 transmits the third parallel optical signal to the second optical filter 4023, the second optical filter 4023 performs 90-degree bending reflection on the third parallel optical signal, and reflects the third parallel optical signal to the second focusing lens 4015 in the second plastic lens set 401 closest to the second optical filter 4023, and the second focusing lens 4015 focuses the third parallel optical signal into an optical signal of the detector set 403;
when the fourth parallel optical signal is incident on the second optical filter 4021, the second optical filter 4021 transmits the fourth parallel optical signal to the second optical filter 4022, the second optical filter 4022 transmits the fourth parallel optical signal to the second optical filter 4023, the second optical filter 4023 transmits the fourth parallel optical signal to the second inclined surface 4012 of the second plastic lens assembly 401, the fourth parallel optical signal is totally reflected to the second focusing lens 4016 of the second plastic lens assembly 401 closest to the second inclined surface 4012 by the second inclined surface 4012, and the second focusing lens 4016 focuses the fourth parallel optical signal into the optical signal of the detector group 403.
The first optical signal, the second optical signal, the third optical signal and the fourth optical signal after wavelength multiplexing are output through optical fibers, are adjusted through optical paths of the second plastic lens group 401 and the second optical filter group 402, and are detected through the detector group 403, so that the function of wavelength demultiplexing is realized.
The first optical signal, the second optical signal, and the like, and the first parallel optical signal, the second parallel optical signal, and the like described in the above embodiments are only signals for embodying each path in specific implementation, and may be completely different signals in different embodiments.
EXAMPLE seven
The embodiment of the invention provides an optical device, which comprises a wavelength division multiplexing component provided by the first embodiment and a wavelength division demultiplexing component provided by the second embodiment so as to realize wavelength division multiplexing and demultiplexing functions. Fig. 5 is a schematic structural diagram of an optical device according to an embodiment of the present invention, and as shown in fig. 5, the optical device includes a wavelength division multiplexing component and a wavelength division demultiplexing component; the wavelength division multiplexing component comprises a first lens group 501 and at least one first filter 502; wherein,
the first lens group 501 includes at least two first collimating lenses 5011, a first reflecting surface 5012, and a first focusing lens 5013;
the first collimating lens 5011 is configured to collimate an optical signal into a parallel optical signal, and to irradiate the parallel optical signal to the first reflecting surface 5012 or the first optical filter 502;
the first reflecting surface 5012 is disposed on one side of the first optical filter 502, and is configured to totally reflect the parallel optical signal to the first optical filter 502;
the first optical filter 502 is used for transmitting the parallel optical signal or performing 90-degree bending reflection on the parallel optical signal;
the first focusing lens 5013 is disposed on the other side of the first optical filter 502, and is configured to focus the parallel optical signal to the optical fiber 507;
the wavelength division demultiplexing component comprises a second lens group 503 and at least one second optical filter 504; wherein,
the second lens group 503 comprises a second collimating lens 5031, a second reflecting surface 5032 and at least two second focusing lenses 5033;
the second collimating lens 5031 is disposed at one side of the second optical filter 504, and is configured to collimate an optical signal into a parallel optical signal, where the parallel optical signal is incident to the second optical filter 504;
the second optical filter 504 is configured to transmit the parallel optical signal or perform 90-degree bending reflection on the parallel optical signal to the second focusing lens 5033;
the second reflecting surface 5032 is disposed on the other side of the second optical filter 504, and is configured to totally reflect the parallel optical signal to the second focusing lens 5033;
the second focusing lens 5033 is used to focus the parallel light signals into the light signals to the detector set 506.
It should be noted that the first lens group 501 and the second lens group 503 may be plastic lens groups formed by plastic injection molding, and the plastic structure of the first lens group 501 and the second lens group 503 can save the cost of the components.
In addition, the light-passing planes of the lenses in the first lens group 501 and the second lens group 503 may be coated with an antireflection film, which can prevent the lenses in the second lens group 201 from reflecting light signals.
It should be noted that the first filter 502 may be attached to the first lens group 501 by epoxy glue, and the second filter 504 may be attached to the second lens group 503 by epoxy glue.
Here, the optical device further comprises at least two lasers 501 for emitting optical signals and at least two detectors 506 for detecting optical signals. The laser and the detector can be mounted by a high-precision chip mounter, for example, the laser and the detector are mounted on a PCB board by the chip mounter.
It should be noted that the first lens group 501 and the second lens group 503 can be aligned with the optical axis of the optical fiber by using active alignment or passive alignment. The optical fibers may be spliced using a Jumper or MPO and mounted with the first lens group 501 and the second lens group 503.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. The above-described terminal embodiments are only illustrative, for example, the division of the unit is only a logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
Claims (10)
1. A wavelength division multiplexing component, comprising: a first lens group and at least one first filter, wherein;
the first lens group comprises at least two first collimating lenses, a first reflecting surface and a first focusing lens;
the first collimating lens is used for collimating an optical signal into a parallel optical signal and enabling the parallel optical signal to be incident to the first reflecting surface or the first optical filter;
the first reflecting surface is arranged on one side of the first optical filter and is used for totally reflecting the parallel optical signals to the first optical filter;
the first optical filter is used for transmitting the parallel optical signals or performing 90-degree bending reflection on the parallel optical signals;
the first focusing lens is arranged on the other side of the first optical filter and used for focusing the parallel optical signals to the optical fiber.
2. The assembly of claim 1, wherein the first lens group is a plastic lens group formed by plastic injection molding.
3. An assembly according to claim 1 wherein the clear planes of the lenses in the first lens group are each coated with an anti-reflective film.
4. The assembly of claim 1, wherein the first filter is bonded to the first lens group by an epoxy glue.
5. The assembly of any of claims 1 to 4, wherein the wavelength division multiplexing assembly further comprises at least two transmitting lasers for transmitting optical signals.
6. A wavelength division demultiplexing component, said wavelength division demultiplexing component comprising: a second lens group and at least one second filter, wherein;
the second lens group comprises a second collimating lens, a second reflecting surface and at least two second focusing lenses;
the second collimating lens is arranged on one side of the second optical filter and is used for collimating an optical signal into a parallel optical signal and enabling the parallel optical signal to be incident to the second optical filter;
the second optical filter is used for transmitting the parallel optical signals or bending and reflecting the parallel optical signals to the second focusing lens by 90 degrees;
the second reflecting surface is arranged on the other side of the second optical filter and is used for totally reflecting the parallel optical signals to the second focusing lens;
the second focusing lens is used for focusing the parallel light signals to the detector.
7. The assembly of claim 6, wherein the second lens group is a plastic lens group formed by plastic injection molding.
8. An assembly according to claim 6 wherein the clear planes of the lenses in the second lens group are each coated with an anti-reflective film.
9. The assembly of any of claims 6 to 8, wherein the wavelength division demultiplexing assembly further comprises at least two detectors for detecting optical signals.
10. An optical device comprising a wavelength division multiplexing assembly according to any one of claims 1 to 5 and a wavelength division demultiplexing assembly according to any one of claims 6 to 9.
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| CN112525886A (en) * | 2020-12-07 | 2021-03-19 | 上海新产业光电技术有限公司 | Raman spectrum device |
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