CN111123436A - Color light wavelength division multiplexing module for 5G application and assembling method thereof - Google Patents
Color light wavelength division multiplexing module for 5G application and assembling method thereof Download PDFInfo
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- CN111123436A CN111123436A CN202010122381.6A CN202010122381A CN111123436A CN 111123436 A CN111123436 A CN 111123436A CN 202010122381 A CN202010122381 A CN 202010122381A CN 111123436 A CN111123436 A CN 111123436A
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- pass filter
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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
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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
-
- 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
Abstract
The utility model provides a color light wavelength division multiplexing module that 5G used, includes the glass substrate, the bottom surface subsides of glass substrate are equipped with first white piece or first high low pass filter, the top surface subsides of glass substrate are equipped with second high low pass filter and second white piece, first white piece or first high low pass filter below are provided with fiber collimator, second high low pass filter top is provided with right angle prism, be provided with beam split receiving element on the glass substrate. The module evenly distributes the output ports on two sides, so that the loss is halved, the overall dislocation is halved, and the module has the advantages of short optical path, compact structure, small insertion loss, simple processing, low cost and the like. The full wave is divided into two half waves by arranging the high-low pass filter disc, so that the film coating difficulty of the subsequent filter disc is greatly reduced. The original method of adjusting the collimator in five dimensions is avoided by fixing the lens array first and then adjusting the single optical fiber head in three dimensions according to the lens array, so that the debugging difficulty and the debugging space are greatly reduced, and the method is suitable for the limited base station space.
Description
Technical Field
The invention relates to the technical field of optical fiber communication, in particular to a color light wavelength division multiplexing module applied to 5G.
Background
As the development of optical fiber communication is rapid, the maximum use of the width of the optical fiber is directly required with the increase of the demand of transmission capacity. The optical wavelength division multiplexing technology is to multiplex optical modulation signals with different optical wavelengths into one optical fiber according to the optical wavelengths for transmission, and also can decompose multi-wavelength optical modulation signals simultaneously transmitted in the same optical fiber into individual wavelengths for respective output, which is one of the most effective schemes for improving the communication capacity of the optical fiber. Therefore, the optical fiber is widely applied to the current optical communication network.
In order to meet the current popular requirement of a 5G forward transmission network, optical fibers are arranged from a base station to a machine room once in a 5G forward transmission scheme, base station equipment can be 6 waves or 12 waves, and then corresponding wavelengths are selected according to the requirement of service development. The base station and the machine room need to multiplex light with different wavelengths from the optical modules into one optical fiber through the splitting and combining module, and split the light with different wavelengths from the optical fiber into each optical module. The typical application of the currently proposed 5G fronthaul scheme is the first 6 wave CWDM scheme, with wavelengths 20nm apart, 1271nm, 1291nm, 1311nm, 1331nm, 1351nm, 1371nm, respectively.
The former one has 5G single network and 4G mixed network. In the case of hybrid networking, actually, one base station has 4G signals and also 5G signals, 4G has 6 wavelengths, and 5G also needs 6 wavelengths. For a more convenient base station compatibility model in the future, 12 wavelengths are required in 4G and 5G hybrid networking. The mature industrial chain is reused, the cost is controllable, the urgency of 10KM link budget and 5G forwarding network deployment is met, and the O-band WDM technology is promoted. The MWDM reuses a low-cost 25G wavelength division industrial chain, and the requirement of 5G forward transmission of 12 waves is quickly met. An innovative Open-WDM/MWDM scheme proposed by China Mobile can be a non-equidistant wavelength + equidistant/non-equidistant filtering system, the MWDM scheme is proposed, on the basis of the wavelength interval of 20nm channels of the existing CWDM with six channels, one solution is to shift the wavelength by 3.5nm up and down, and each channel transmits two wavelength signals of CW-3.5nm and CW +3.5nm to form a 12-wave signal wavelength division multiplexing module with non-equidistant wavelength intervals.
Correspondingly, China telecom and China Unicom, adopt the CWDM of the first 6 waves: 1271nm, 1291nm, 1311nm, 1331nm, 1351nm, 1371nm and the last 6 waves of CWDM: 1471nm, 1491nm, 1511nm, 1531nm, 1551nm, and 1571 nm.
In the case of 4G/5G base stations, 10km and 20km transmission without optical amplification is required, and the requirement on optical path loss is high. In the bidding of telecom operators, a mode of accumulating loss scores is adopted, so the loss of an optical path is a very important index.
In the existing splitting and multiplexing module with a common collimator structure, if the optical fiber head is 1.0mm, the collimator has the outer diameter of 1.4mm, and the channel interval at least needs to be 1.8-2.0 mm by adding a proper debugging space. 5G equipment needs to be added under the condition that the existing 4G base station is basically filled, and the existing splitting and combining wave module with the common adjusting collimator structure is difficult to meet the requirements.
Disclosure of Invention
The invention aims to provide a 5G applied color light wavelength division multiplexing module which can reduce the loss by half, the error accumulation by half and the total dislocation by half and has the advantages of short optical path, compact structure, small insertion loss, simple processing and low cost.
The technical scheme of the invention is as follows: the utility model provides a color light wavelength division multiplexing module that 5G used, includes the glass substrate, the bottom surface subsides of glass substrate are equipped with first white piece or first high low pass filter, the top surface subsides of glass substrate are equipped with second high low pass filter and second white piece, first white piece or first high low pass filter below are provided with fiber collimator, second high low pass filter top is provided with right angle prism, be provided with beam split receiving element on the glass substrate.
Furthermore, the light splitting receiving assembly comprises optical filter arrays arranged on two sides of the bottom surface of the glass substrate, reflectors or the optical filter arrays are arranged on two sides of the top surface of the glass substrate, lens arrays are arranged outside the optical filter arrays in the directions away from the glass substrate, and a plurality of single optical fiber heads are correspondingly arranged on the lens arrays.
Furthermore, the optical fiber collimator is one of a single optical fiber collimator, a double optical fiber collimator with an upgrading end and two single optical fiber collimators with upgrading ends.
Further, the lens array comprises a glass lens, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to one.
Furthermore, the glass substrate is not coated with a film, one surface of the first white sheet and one surface of the second white sheet are not coated with a film, and the other surface of the first white sheet and the other surface of the second white sheet are coated with an air antireflection film.
Furthermore, the optical filter array comprises a plurality of optical filters, one surface of each optical filter is not coated with a film, and the wavelength division multiplexing surface faces the air.
Furthermore, the single optical fiber heads correspond to the optical filters one to one.
Furthermore, the first white sheet, the first high-low pass filter sheet, the second white sheet, the second high-low pass filter sheet, the optical filter and the reflector are fixed on the glass substrate through gluing.
A method for assembling a color wavelength division multiplexing module applied to 5G application is characterized by comprising the following steps:
1) adhering the first white sheet or the first high-low pass filter sheet, the second high-low pass filter sheet and the second white sheet on the glass substrate by using glue;
2) adhering a plurality of optical filters on a glass substrate by using glue;
3) an optical fiber collimator is arranged below the first white sheet or the first high-low pass filter sheet, and a right-angle prism is arranged above the second high-low pass filter sheet;
4) adjusting the angle and position of the right-angle prism and the optical fiber collimator to make the light beam emitted by the optical fiber collimator fall on the design point of each optical filter after refraction, reflection and transmission;
5) inputting multi-channel signal light from an optical fiber collimator, judging a light beam path, and fixing a lens array on the light path;
6) and arranging a plurality of single optical fiber heads on the lens array, and adjusting the position and the angle of each single optical fiber head to form a collimator of a corresponding port so as to realize the input and output of a corresponding channel.
Compared with the prior art, the invention has the following advantages: the module evenly distributes 12 output ports on two sides, so that the loss is halved, the error accumulation is halved, and the total dislocation is halved, and the module has the advantages of short optical path, compact structure, small insertion loss, simple processing, low cost and the like. The full wave is divided into two half waves by arranging the high-low pass filter disc, so that the film coating difficulty of the subsequent filter disc is greatly reduced. And the original method of adjusting the collimator in five dimensions is avoided by fixing the lens array first and then adjusting the single optical fiber head in three dimensions according to the lens array, so that the debugging difficulty and the debugging space are greatly reduced, the module volume is reduced, and the method is more suitable for the limited base station space.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic view of a third embodiment of the present invention;
FIG. 4 is a diagram illustrating a fourth embodiment of the present invention;
FIG. 5 is a schematic diagram of a fifth embodiment of the present invention;
FIG. 6 is a schematic diagram of a sixth embodiment of the present invention;
FIG. 7 is a schematic diagram of one half of an embodiment of the present invention;
FIG. 8 is a schematic diagram of the application of the present invention in a 5G network;
fig. 9 is a 12-wavelength list diagram required by china movement when the current 4G and 5G hybrid networking is performed.
In the figure: 11-single optical fiber collimator, 12-double optical fiber collimator, 2-glass substrate, 31-first white sheet, 32-second white sheet, 41-first high and low wave filter, 42-second high and low wave filter, 5-right angle prism, 6-filter, 7-glass lens, 8-single optical fiber head, 9-reflector and 10-convex lens.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
The first embodiment is as follows:
refer to fig. 1.
A5G applied color light wavelength division multiplexing module comprises a glass substrate 2, in order to reduce the loss when light rays enter, a first white sheet 31 is attached to the bottom surface of the glass substrate, a second high-low pass filter 42 and a second white sheet 32 are attached to the top surface of the glass substrate so as to divide the light rays into reflected light beams and transmitted light beams according to different wavelengths and reduce the loss when the transmitted light beams enter the glass substrate again, a single optical fiber collimator 11 is arranged below the first white sheet, a right-angle prism 5 is arranged above the second high-low pass filter, and a light splitting receiving assembly is arranged on the glass substrate.
In this embodiment, the light splitting receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate, the optical filter arrays are also disposed on two sides of the top surface of the glass substrate to sequentially separate out light according to different wavelengths, the optical filter arrays are both disposed outside the optical filter arrays in directions away from the glass substrate, and the lens arrays are correspondingly disposed with a plurality of single optical fiber heads 8.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first white sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first white sheet, the second high-low pass filter sheet and the optical filter are fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input from the side of the glass substrate adhered with the first white sheet by a single optical fiber collimator. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the non-conforming light beam is reflected to the next optical filter until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam in the glass substrate irradiates on the optical filter, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the light beam which does not accord with the wavelength of the optical filter is reflected to the next optical filter until the light beam is transmitted out completely. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
Example two:
refer to fig. 2.
The utility model provides a color light wavelength division multiplexing module that 5G used, includes glass substrate 2, in order to reduce the loss when light is incident, glass substrate's bottom surface subsides are equipped with first white piece 31, glass substrate's top surface subsides are equipped with second high low pass filter 42 and second white piece 32 to divide into reflection beam and transmission beam and reduce the loss when transmission beam gets into glass substrate again according to the wavelength difference with light, the below of first white piece is provided with two fiber collimator 12 of taking upgrading end, second high low pass filter top is provided with rectangular prism 5, be provided with beam splitting receiving component on the glass substrate.
In this embodiment, the light splitting receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate, the optical filter arrays are also disposed on two sides of the top surface of the glass substrate to sequentially separate out light according to different wavelengths, the optical filter arrays are both disposed outside the optical filter arrays in directions away from the glass substrate, and the lens arrays are correspondingly disposed with a plurality of single optical fiber heads 8.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first white sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first white sheet, the second high-low pass filter sheet and the optical filter are fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input from one optical fiber of the double-optical fiber collimator, wherein the light beam with the wavelength meeting the requirement is transmitted and output to the wavelength division multiplexing light path, and other wavelength light beams are reflected to the light path of the other optical fiber of the double-optical fiber collimator and can be used for subsequent upgrading. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the non-conforming light beam is reflected to the next optical filter until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam in the glass substrate irradiates on the optical filter, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the light beam which does not accord with the wavelength of the optical filter is reflected to the next optical filter until the light beam is transmitted out completely. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
Example three:
refer to fig. 3.
A5G applied color light wavelength division multiplexing module comprises a glass substrate 2, in order to reduce the loss when light enters, a first high-low pass filter 41 is attached to the bottom surface of the glass substrate, a second high-low pass filter 42 and a second white sheet 32 are attached to the top surface of the glass substrate so as to divide the light into a reflected light beam and a transmitted light beam according to different wavelengths and reduce the loss when the transmitted light beam enters the glass substrate again, two single-fiber collimators 11 with upgrading ends are arranged below the first high-low pass filter, a right-angle prism 5 is arranged above the second high-low pass filter, and a light splitting receiving assembly is arranged on the glass substrate.
In this embodiment, the light splitting receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate, the optical filter arrays are also disposed on two sides of the top surface of the glass substrate to sequentially separate out light according to different wavelengths, the optical filter arrays are both disposed outside the optical filter arrays in directions away from the glass substrate, and the lens arrays are correspondingly disposed with a plurality of single optical fiber heads 8.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first high-low pass filter sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first high-low pass filter, the second white filter, the second high-low pass filter, and the optical filter are fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input by a single optical fiber collimator, wherein the light beam with the wavelength meeting the requirement enters a wavelength division multiplexing light path after being transmitted by a first high-low pass filter, and the other wavelength light beams are received and output by another single optical fiber collimator after being reflected by the first high-low pass filter and can be used for subsequent upgrading. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the non-conforming light beam is reflected to the next optical filter until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam in the glass substrate irradiates on the optical filter, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the light beam which does not accord with the wavelength of the optical filter is reflected to the next optical filter until the light beam is transmitted out completely. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
Example four:
refer to fig. 4.
A5G applied color light wavelength division multiplexing module comprises a glass substrate 2, in order to reduce the loss when light rays enter, a first white sheet 31 is attached to the bottom surface of the glass substrate, a second high-low pass filter 42 and a second white sheet 32 are attached to the top surface of the glass substrate so as to divide the light rays into reflected light beams and transmitted light beams according to different wavelengths and reduce the loss when the transmitted light beams enter the glass substrate again, a single optical fiber collimator 11 is arranged below the first white sheet, a right-angle prism 5 is arranged above the second high-low pass filter, and a light splitting receiving assembly is arranged on the glass substrate.
In this embodiment, the light splitting and receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate to sequentially separate out light according to different wavelengths, reflectors 9 are disposed on two sides of the top surface of the glass substrate to continuously reflect light onto the optical filter, a lens array is disposed outside the optical filter array in a direction away from the glass substrate, and a plurality of single optical fiber heads 8 are correspondingly disposed on the lens array.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first white sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first white sheet, the second high-low pass filter, the optical filter, and the reflector are fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input from the side of the glass substrate adhered with the first white sheet by a single optical fiber collimator. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam does not accord with the wavelength of the optical filter, the light beam is reflected to the reflector, and then the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam irradiates the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam which does not accord with the wavelength of the optical filter is reflected to the reflector, the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
Example five:
refer to fig. 5.
The utility model provides a color light wavelength division multiplexing module that 5G used, includes glass substrate 2, in order to reduce the loss when light is incident, glass substrate's bottom surface subsides are equipped with first white piece 31, glass substrate's top surface subsides are equipped with second high low pass filter 42 and second white piece 32 to divide into reflection beam and transmission beam and reduce the loss when transmission beam gets into glass substrate again according to the wavelength difference with light, the below of first white piece is provided with two fiber collimator 12 of taking upgrading end, second high low pass filter top is provided with rectangular prism 5, be provided with beam splitting receiving component on the glass substrate.
In this embodiment, the light splitting and receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate to sequentially separate out light according to different wavelengths, reflectors 9 are disposed on two sides of the top surface of the glass substrate to continuously reflect light onto the optical filter, a lens array is disposed outside the optical filter array in a direction away from the glass substrate, and a plurality of single optical fiber heads 8 are correspondingly disposed on the lens array.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first white sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first white sheet, the second high-low pass filter, the optical filter, and the reflector are fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input from one optical fiber of the double-optical fiber collimator, wherein the light beam with the wavelength meeting the requirement is transmitted and output to the wavelength division multiplexing light path, and other wavelength light beams are reflected to the light path of the other optical fiber of the double-optical fiber collimator and can be used for subsequent upgrading. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam does not accord with the wavelength of the optical filter, the light beam is reflected to the reflector, and then the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam irradiates the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam which does not accord with the wavelength of the optical filter is reflected to the reflector, the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
Example six:
refer to fig. 6.
A5G applied color light wavelength division multiplexing module comprises a glass substrate 2, in order to reduce the loss when light rays enter, a first high-low pass filter 41 is attached to the bottom surface of the glass substrate, a second high-low pass filter 42 and a second white sheet 32 are attached to the top surface of the glass substrate so as to divide the light rays into reflected light beams and transmitted light beams according to different wavelengths and reduce the loss when the transmitted light beams enter the glass substrate again, two single-fiber collimators 11 and 13 with upgrading ends are arranged below the first high-low pass filter, a right-angle prism 5 is arranged above the second high-low pass filter, and a light splitting receiving assembly is arranged on the glass substrate.
In this embodiment, the light splitting and receiving assembly includes one optical filter array disposed on each of two sides of the bottom surface of the glass substrate to sequentially separate out light according to different wavelengths, reflectors 9 are disposed on two sides of the top surface of the glass substrate to continuously reflect light onto the optical filter, a lens array is disposed outside the optical filter array in a direction away from the glass substrate, and a plurality of single optical fiber heads 8 are correspondingly disposed on the lens array.
In this embodiment, the lens array includes a glass lens 7, a plurality of convex lenses are arranged on the glass lens, and the convex lenses correspond to the single optical fiber heads one to form a plurality of collimators for receiving and emitting light.
In this embodiment, the glass substrate is not coated with a film, one surface of the first high-low pass filter sheet and the second white sheet is not coated with a film, and the other surface is coated with an air antireflection film, so as to enhance the transmittance of a light beam and enhance the signal stability.
In this embodiment, the optical filter array includes a plurality of optical filters 6, one surface of each optical filter is not coated, and the wavelength division multiplexing surface faces air.
In this embodiment, the single optical fiber heads correspond to the optical filters one to one.
In this embodiment, the first high-low pass filter, the second white filter, the second high-low pass filter, the optical filter, and the reflector are all fixed on the glass substrate by gluing.
The working principle is as follows: the system light beam is input by a single optical fiber collimator, wherein the light beam with the wavelength meeting the requirement enters a wavelength division multiplexing light path after being transmitted by a first high-low pass filter, and the other wavelength light beams are received and output by another single optical fiber collimator after being reflected by the first high-low pass filter and can be used for subsequent upgrading. The light beam enters the first white sheet and then reaches the second high-low pass filter sheet, and is reflected and transmitted by the second high-low pass filter sheet and then is divided into two light beams, namely a reflected light beam and a transmitted light beam. The reflected light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam does not accord with the wavelength of the optical filter, the light beam is reflected to the reflector, and then the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters. The transmitted light beam is reflected by the right-angle prism and returns to the glass substrate again, after passing through the second white sheet, the light beam irradiates the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, if the light beam which does not accord with the wavelength of the optical filter is reflected to the reflector, the light beam is reflected to the next optical filter by the reflector until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
The assembly method of the above embodiment is referred to as follows: a method for assembling a color wavelength division multiplexing module applied to 5G application is characterized by comprising the following steps:
1) the first white sheet or the first high-low pass filter sheet, the second high-low pass filter sheet and the second white sheet are attached to the glass substrate by glue, and the second high-low pass filter sheet and the second white sheet are tightly attached without gaps;
2) adhering a plurality of optical filters on the glass substrate by using glue, wherein the optical filters are tightly adhered without gaps;
3) an optical fiber collimator is arranged below the first white sheet or the first high-low pass filter sheet, and a right-angle prism is arranged above the second high-low pass filter sheet;
4) adjusting the angle and position of the right-angle prism and the optical fiber collimator to make the light beam emitted by the optical fiber collimator fall on the design point of each optical filter after refraction, reflection and transmission;
5) inputting multi-channel signal light from the optical fiber collimator, judging a light beam path, and fixing a glass lens on the light path to enable a convex lens on the lens array to fall on the light path;
6) and arranging a plurality of single optical fiber heads on the lens array, and adjusting the position and the angle of each single optical fiber head to form a collimator of a corresponding port so as to realize the input and output of a corresponding channel.
Example seven:
refer to fig. 7.
In actual use, 12 ports are not needed to be completely used, and only 6 ports are needed to meet the requirement, so that only half of the module is needed to be used, and part of parts are not needed to be used.
Refer to the first embodiment.
The working principle is as follows: the system light beam is input from one side of the glass substrate stuck with the first high-low pass filter by the single optical fiber collimator. The light beams with the wavelengths meeting the requirements enter the wavelength division multiplexing optical path after being transmitted by the first high-low pass filter, and the light beams with other wavelengths are reflected by the first high-low pass filter. The transmitted light beam irradiates on the optical filter in the glass substrate, the light beam which accords with the wavelength of the optical filter is transmitted out of the optical filter, and the non-conforming light beam is reflected to the next optical filter until the light beam is completely transmitted out. The transmitted light beams pass through the lens array and are respectively output by the single optical fiber heads corresponding to the optical filters.
In the first to seventh embodiments, due to the principle that the optical path is reversible, the module can also implement the function of combining twelve light beams with different wavelengths, so that the twelve channels of the module can be six-input six-output, and also can be other light input and output in any number of proportions.
In the first to seventh embodiments, the number of module channels may be increased or decreased by increasing or decreasing the number of the filters and the number of the convex lenses on the lens array according to the usage requirement.
It will be apparent to those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and that various modifications and changes in color wavelength division multiplexing module can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a color light wavelength division multiplexing module that 5G used, includes the glass substrate, its characterized in that, the bottom surface subsides of glass substrate are equipped with first white piece or first high low pass filter, the top surface subsides of glass substrate are equipped with second high low pass filter and second white piece, first white piece or first high low pass filter below are provided with fiber collimator, second high low pass filter top is provided with right angle prism, be provided with beam split receiving element on the glass substrate.
2. The color light wavelength division multiplexing module according to claim 1, wherein the light splitting and receiving assembly comprises filter arrays disposed on two sides of a bottom surface of the glass substrate, two sides of a top surface of the glass substrate are provided with the reflectors or the filter arrays, a lens array is disposed outside the filter arrays in a direction away from the glass substrate, and a plurality of single fiber heads are correspondingly disposed on the lens array.
3. The color optical wavelength division multiplexing module according to claim 1 or 2, wherein the optical fiber collimator is one of a single optical fiber collimator, a dual optical fiber collimator with an upgrade end, and two single optical fiber collimators with upgrade ends.
4. The color wavelength division multiplexing module according to claim 2, wherein the lens array comprises a glass lens, and a plurality of convex lenses are disposed on the glass lens, and the convex lenses correspond to the single optical fiber heads one to one.
5. The color optical wavelength division multiplexing module according to claim 1 or 2, wherein the glass substrate is not coated, one surface of the first white plate and the second white plate is not coated, and the other surface is coated with an air antireflection film.
6. The color optical wavelength division multiplexing module according to claim 2, wherein the filter array comprises a plurality of filters, one surface of each filter is not coated, and the wavelength division multiplexing surface faces the air.
7. The WDM module according to claim 6, wherein the single fiber heads are in one-to-one correspondence with the filters.
8. The color optical wavelength division multiplexing module according to claim 2, wherein the first white plate, the second white plate, the high-low pass filter, the optical filter and the reflector are fixed on the glass substrate by gluing.
9. A method for assembling a color wdm module for a 5G application according to claim 2, comprising the steps of:
1) adhering the first white sheet or the first high-low pass filter sheet, the second high-low pass filter sheet and the second white sheet on the glass substrate by using glue;
2) adhering a plurality of optical filters on a glass substrate by using glue;
3) an optical fiber collimator is arranged below the first white sheet or the first high-low pass filter sheet, and a right-angle prism is arranged above the second high-low pass filter sheet;
4) adjusting the angle and position of the right-angle prism and the optical fiber collimator to make the light beam emitted by the optical fiber collimator fall on the design point of each optical filter after refraction, reflection and transmission;
5) inputting multi-channel signal light from an optical fiber collimator, judging a light beam path, and fixing a lens array on the light path;
6) and arranging a plurality of single optical fiber heads on the lens array, and adjusting the position and the angle of each single optical fiber head to form a collimator of a corresponding port so as to realize the input and output of a corresponding channel.
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