CN212569201U - Compact WDM wavelength division multiplexer - Google Patents
Compact WDM wavelength division multiplexer Download PDFInfo
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- CN212569201U CN212569201U CN202022087785.4U CN202022087785U CN212569201U CN 212569201 U CN212569201 U CN 212569201U CN 202022087785 U CN202022087785 U CN 202022087785U CN 212569201 U CN212569201 U CN 212569201U
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Abstract
The utility model discloses a can realize that light path loss is low, and module size is super little, stable function's compact WDM wavelength division multiplexer. The compact WDM substrate assembly; a supporting layer is arranged on the substrate assembly; the substrate assembly is provided with a plurality of layers of wavelength division multiplexing assemblies; and the wavelength division multiplexing components at the bottommost layer are arranged on the bottom plate, and the wavelength division multiplexing components at the other layers are arranged on the supporting layer. The compact WDM wavelength division multiplexer greatly reduces the space in size, and is beneficial to the development of network construction towards integration miniaturization.
Description
Technical Field
The utility model relates to an optical module of signal wavelength transmission multiplexing technique in the optical fiber communication field especially relates to a compact WDM wavelength division multiplexer.
Background
It is well known that: with the development of various new services such as automatic driving, cloud service, internet of things and the like, the 5G era of high-speed and high-capacity data transmission has come. In order to adapt to high-speed large-capacity upgrading, particularly to high-speed large-capacity upgrading of a metropolitan area network and an access network, one optical fiber in the 5G network front transmission needs to transmit a multipath signal, and a matched wavelength division multiplexer and demultiplexer is needed, so that intensive miniaturization upgrading or reconstruction is facilitated, the using quantity of the optical fibers is saved, and the laying cost of the optical fibers is saved. The demand for wavelength division multiplexing/demultiplexing modules in the market will be greater and greater.
With the development of wavelength division multiplexing technology, people pay more and more attention to the balance of performance price, so that telecommunication operators have higher and higher requirements on the size of the whole device, and the optical transmission network system can be developed towards miniaturization and modularization.
The conventional wavelength range of optical fiber communication is 1260-1620 nm, and if the product works in the full-wave range of 1260-1620 nm, the product is called a full-band product. If the product only works in a certain range such as 1260-1380 nm or 1460-1580 nm, the product is called a half-wave product. The 12 wave center wavelengths of the conventional wavelength division module are divided into: front 6 wave center wavelength lambda1～λ6Working in the range of 1260-1380 nm and the central wavelength lambda of the rear 6 waves7～λ12At 1460-1580 nm.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can realize that the optical path loss is low, and the module size is super little, the compact WDM wavelength division multiplexer of stable function is provided.
The utility model provides a technical scheme that its technical problem adopted is: a compact WDM wavelength division multiplexer including a substrate assembly; the base plate assembly comprises a bottom plate and a vertical side plate; at least one supporting layer is arranged on the vertical side plate; the supporting layer comprises a first horizontal base plate, a second horizontal base plate and a third horizontal base plate;
the vertical side plate is arranged on one side of the bottom plate; the first horizontal base plate, the second horizontal base plate and the third horizontal base plate are all arranged on the vertical side plate and are positioned above the bottom plate; the upper surface of the first horizontal substrate is flush with the upper surface of the third horizontal substrate;
the second horizontal substrate is positioned between the first horizontal substrate and the third horizontal substrate; the substrate assembly is provided with a plurality of layers of wavelength division multiplexing assemblies; the wavelength division multiplexing components at the bottommost layer are arranged on the bottom plate, and the wavelength division multiplexing components at the other layers are arranged on the supporting layer;
the wavelength division multiplexing component comprises a first collimator group, a second collimator group, a first filter disc group and a second filter disc group; the first filter disc group and the second filter disc group are positioned between the first collimator group and the second collimator group;
the wavelength division multiplexing component arranged on the supporting layer comprises a first collimator group arranged on the first horizontal substrate, a second collimator group arranged on the third horizontal substrate, a first filter disc group arranged at one end of the second horizontal substrate and a second filter disc group arranged at the other end of the second horizontal substrate;
the first filter disc group comprises a functional disc and a plurality of filter discs with different wave-transmitting wavelengths; the second filter disc group comprises a plurality of filter discs with different wave-transmitting wavelengths, and the wave-transmitting wavelengths of the filter discs in the first filter disc group and the second filter disc group are different;
the functional sheet in the bottommost wavelength division multiplexing component is a reflector sheet; the functional sheets in the other layer assemblies are jumping sheets; the first collimator group is provided with a wave-entering collimator and other collimators, and the other collimators in the first collimator group, the filter sheet in the first filter sheet group, the filter sheet in the second filter sheet group and the collimators of the second collimator group in the wavelength division multiplexing component are in one-to-one correspondence.
Specifically, a supporting layer is arranged on the vertical side plate; the first collimator group arranged on the first horizontal substrate comprises a wave-entering collimator, a second collimator, a fourth collimator and a sixth collimator; the second collimator group arranged on the third horizontal substrate comprises a first collimator, a third collimator and a fifth collimator;
the first filter disc group at one end of the second horizontal substrate comprises a jump disc, a second filter disc, a fourth filter disc and a sixth filter disc; the second filter disc group at the other end of the second horizontal base plate comprises a first filter disc, a third filter disc and a fifth filter disc;
the second collimator, the second filter disc, the first filter disc and the first collimator correspond to each other;
the fourth collimator, the fourth filter, the third filter and the third collimator correspond to each other;
the sixth collimator, the sixth filter, the fifth filter and the fifth collimator correspond to each other;
the jumper sheet can reflect light waves with other wavelengths by penetrating through all the filter sheets of the first filter sheet, the third filter sheet, the fifth filter sheet, the second filter sheet, the fourth filter sheet and the sixth filter sheet;
the first collimator group of the wavelength division multiplexing assembly on the bottom plate comprises an eighth collimator, a tenth collimator and a twelfth collimator; the second collimator group comprises a seventh collimator, a ninth collimator and an eleventh collimator; the first filter disc group comprises a reflection disc, an eighth filter disc, a tenth filter disc and a twelfth filter disc; the second filter disc group comprises a seventh filter disc, a ninth filter disc and an eleventh filter disc;
the eighth collimator, the eighth filter, the seventh filter and the seventh collimator correspond to each other;
the tenth collimator, the tenth filter, the ninth filter and the ninth collimator correspond to each other;
the twelfth collimator, the twelfth filter element, the eleventh filter element and the eleventh collimator correspond to each other.
Specifically, a film coating layer is arranged on the jumper sheet; allowing the jumper to transmit 1260-1380 nm light; reflecting light of other wavelength ranges.
Preferably, the base plate assembly is provided with a filter sheet and a functional sheet placement groove.
The utility model has the advantages that: compact WDM wavelength division multiplexer, on the basis of original wavelength division multiplexing technique, will be by the wavelength division multiplexer module of 3 port device cascade mode, set up to the compact wavelength division multiplexer of multilayer space transmission, the space has greatly been reduced in size, is favorable to the network to build toward integrating miniaturized development.
Secondly, compact WDM wavelength division multiplexer, reflection, the transmission of slide carry out optical wavelength signal's selection through free space's optical signal transmission to and optical collimator realizes light beam collimation and coupling scheme, realize that the optical path loss is low, WDM wavelength division multiplexer that the function is stable.
Drawings
Fig. 1 is a schematic diagram of an optical path of a component module of a wavelength division multiplexer in a manner of cascading three-port single devices in the prior art;
fig. 2 is a front view of a base plate assembly in an embodiment of the invention;
fig. 3 is a side view of a base plate assembly in an embodiment of the invention;
fig. 4 is a front view of the compact WDM wavelength division multiplexer in an embodiment of the present invention;
fig. 5 is a top view of an upper wavelength division multiplexing component of the compact WDM wavelength division multiplexer according to an embodiment of the present invention;
fig. 6 is a top view of a bottom wavelength division multiplexing component of the compact WDM wavelength division multiplexer in an embodiment of the present invention;
the following are marked in the figure: 10-vertical side plate, 11-first horizontal base plate, 12-second horizontal base plate, 13-third horizontal base plate; 14-base plate.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 2 to 6, the compact WDM wavelength division multiplexer of the present invention includes a substrate assembly; the base plate assembly comprises a bottom plate 14 and vertical side plates 10; at least one supporting layer is arranged on the vertical side plate 10; the supporting layer comprises a first horizontal base plate 11, a second horizontal base plate 12 and a third horizontal base plate 13;
the vertical side plate 10 is arranged on one side of the bottom plate 14; the first horizontal base plate 11, the second horizontal base plate 12 and the third horizontal base plate 13 are all arranged on the vertical side plate 10 and are positioned above the bottom plate 14; the upper surface of the first horizontal substrate 11 is flush with the upper surface of the third horizontal substrate 13;
the second horizontal base plate 12 is positioned between the first horizontal base plate 11 and the third horizontal base plate 13; the substrate assembly is provided with a plurality of layers of wavelength division multiplexing assemblies; the wavelength division multiplexing components at the bottommost layer are arranged on the bottom plate 14, and the wavelength division multiplexing components at the other layers are arranged on the supporting layer;
the wavelength division multiplexing component comprises a first collimator group, a second collimator group, a first filter disc group and a second filter disc group; the first filter disc group and the second filter disc group are positioned between the first collimator group and the second collimator group;
the wavelength division multiplexing component arranged on the supporting layer comprises a first collimator group arranged on the first horizontal substrate 11, a second collimator group arranged on the third horizontal substrate 13, a first filter disc group arranged at one end of the second horizontal substrate 12 and a second filter disc group arranged at the other end of the second horizontal substrate 12;
the first filter disc group comprises a functional disc and a plurality of filter discs with different wave-transmitting wavelengths; the second filter disc group comprises a plurality of filter discs with different wave-transmitting wavelengths, and the wave-transmitting wavelengths of the filter discs in the first filter disc group and the second filter disc group are different;
the functional sheet in the bottommost wavelength division multiplexing component is a reflector sheet; the functional sheets in the other layer assemblies are jumping sheets; the first collimator group is provided with a wave-entering collimator 20 and other collimators, and the other collimators in the first collimator group, the filter sheet in the first filter sheet group, the filter sheet in the second filter sheet group and the collimators of the second collimator group in the wavelength division multiplexing assembly are in one-to-one correspondence.
In the application process, specifically, a supporting layer is arranged on the vertical side plate 10;
the first collimator group arranged on the first horizontal substrate 11 includes an incoming wave collimator 20, a second collimator 22, a fourth collimator 24, and a sixth collimator 26; the second collimator group arranged on the third horizontal substrate 13 comprises a first collimator 21, a third collimator 23 and a fifth collimator 25;
the first filter sheet group at one end of the second horizontal base plate 12 comprises a skip sheet 41, a second filter sheet 52, a fourth filter sheet 54 and a sixth filter sheet 56; the second filter disc group at the other end of the second horizontal base plate 12 comprises a first filter disc 51, a third filter disc 53 and a fifth filter disc 55;
the second collimator 22, the second filter 52, the first filter 51 and the first collimator 21 correspond to each other;
the fourth collimator 24, the fourth filter 54, the third filter 53 and the third collimator 23 correspond to each other;
the sixth collimator 24, the sixth filter 56, the fifth filter 55 and the fifth collimator 25 correspond to each other;
the jumper sheet 41 can transmit light waves with wavelengths that can be transmitted by all of the first filter sheet 51, the third filter sheet 53, the fifth filter sheet 55, the second filter sheet 52, the fourth filter sheet 54 and the sixth filter sheet 56, and can reflect light waves with other wavelengths;
the first collimator group of the wavelength division multiplexing assembly on the backplane 14 comprises an eighth collimator 28, a tenth collimator 30, and a twelfth collimator 32; the second collimator group comprises a seventh collimator 27, a ninth collimator 29, and an eleventh collimator 31; the first filter set includes a reflective sheet 42, an eighth filter 58, a tenth filter 60, and a twelfth filter 62; the second filter disc group comprises a seventh filter disc 57, a ninth filter disc 59 and an eleventh filter disc 61;
the eighth collimator 28, the eighth filter 58, the seventh filter 57, and the seventh collimator 27 correspond to each other;
the tenth collimator 30, the tenth filter 60, the ninth filter 59, and the ninth collimator 29 correspond to each other;
the twelfth collimator 32, the twelfth filter 62, the eleventh filter 61, and the eleventh collimator 31 correspond to each other. A film coating layer is arranged on the jumper 41; allowing the jumper 41 to transmit 1260-1380 nm light; reflecting light of other wavelength ranges. The base plate assembly is provided with a filter disc and a functional sheet placing groove.
As shown in fig. 4, when the wavelength λ is1～λ12The light is inputted from the optical fiber 201 of the wave-entering collimator 20, and is irradiated onto the jumper 41 in parallel by the collimation of the collimator, and the jumper 41 can transmit 1260-1380 nm lambda1～λ6The light of (2) is reflected by a lambda of 1460-1580 nm7～λ12Of (2) is detected. So λ1～λ6Can pass through the jump sheet 41 and then pass throughTransmitted through the space and irradiated onto the first filter 51. Lambda [ alpha ]7～λ12The light is reflected by the jumper sheet 41 to the inclined surface of the reflection sheet 42, and is reflected by the reflection sheet 42 to the seventh filter 57.
As shown in FIG. 5, in the upper wavelength division multiplexing module, the first filter 51 transmits λ1Reflects light of the remaining wavelength, so λ1The light energy passes through the first filter 51, irradiates the first collimator 21, and enters the optical fiber of the first collimator 21 through the coupling of the first collimator 21, and becomes a signal of the channel 1.
Other wavelengths lambda2～λ6Is reflected by first filter 51 to second filter 52. Second filter element 52 is capable of passing lambda2Reflects light of the remaining wavelength, so λ2Is irradiated onto the second collimator 22 through the second filter 52, and is coupled into the optical fiber of the second collimator 22 through the second collimator 22 to become a signal of the channel 2. For the same reason, wavelength λ3～λ6The signal can also pass through the filter disc of the corresponding channel and reach the optical fiber of the corresponding collimator to become the signal of the corresponding channel.
As shown in fig. 6, λ is the lowest wavelength division multiplexing component7～λ12Is reflected by the reflection sheet 42 to the seventh filter 57, and the seventh filter 57 transmits λ7Reflects light of the remaining wavelength, so λ7The light energy passes through the seventh filter 57, irradiates the seventh collimator 27, and is coupled by the seventh collimator 27 to enter the optical fiber of the seventh collimator 27 as a signal of the channel 7. Other wavelengths lambda8～λ12Is reflected by seventh filter 57 onto eighth filter 58. Eighth filter 58 is capable of passing lambda8Reflects light of the remaining wavelength, so λ8Is irradiated onto the eighth collimator 28 through the eighth filter 58, is coupled into the optical fiber of the eighth collimator 28 through the eighth collimator 28, and becomes a signal of the channel 8. For the same reason, wavelength λ9～λ12The signal can also pass through the filter disc of the corresponding channel and reach the optical fiber of the corresponding collimator to become the signal of the corresponding channel.
The utility model discloses only exemplify compact 2 layer structure wavelength division multiplexer's embodiment. The utility model discloses WDM wavelength division multiplexer comprises base plate subassembly, single fiber collimator, jump piece, reflector plate and filter element.
As shown in fig. 2, the base plate assembly is a rectangular plate structure, and includes a vertical base plate 10 and transverse base plates 11, 12, 13, 14. Wherein the transversal base 11 and the transversal base 13 are on the same horizontal line. Fig. 3 is a side view.
As shown in fig. 4 to 6, there are 13 single fiber collimators, 20 to 32, respectively, and the optical fiber at the tail of each collimator is: 201 to 213.
The jumper 41 can transmit 1260-1380 nm light, reflect 1460-1580 nm light and reflect 620-760 nm red light through a coating technology. The filters 51 to 62 transmit light of the corresponding channel wavelength and reflect light of the remaining wavelengths.
Examples
The utility model discloses WDM wavelength division multiplexer comprises base plate subassembly, single fiber collimator, jump piece 41, reflector plate 42 and filter element.
As shown in fig. 2, the base plate assembly is a rectangular plate structure, and includes a vertical side plate 10, a bottom plate 14, a first horizontal base plate 11, a second horizontal base plate 12, and a third horizontal base plate 13. Wherein the first horizontal substrate 11 and the third horizontal substrate 13 are on the same horizontal line; fig. 3 is a side view.
As shown in fig. 4 to 6, there are 13 single fiber collimators, 20 to 32, respectively, and the optical fiber at the tail of each collimator is: 201 to 213.
The jumper 41 can transmit 1260-1380 nm light, reflect 1460-1580 nm light and reflect 620-760 nm red light through a coating technology. The filters 51 to 62 transmit light of the corresponding channel wavelength and reflect light of the remaining wavelengths.
In the application process:
1. and (4) marking the positions of the filter disc, the jump sheet and the reflector plate on the substrate assembly by laser.
2. Red light 620-760 nm is input from the optical fiber 201 of the wave-entry collimator 20 by using a red light pen, the red light is sequentially put into the first filter 51 to the sixth filter 56, the red light is reflected and transmitted in the first filter 51 to the sixth filter 56, and after the red light spots are ensured to be in the middle of the filters, the first filter 51 to the sixth filter 56 are fixed on the second horizontal substrate 12 by using glue.
3. The jump sheet 41 and the reflection sheet 42 are pre-fixed, red light is sent from the optical fiber 201 of the wave-entering collimator 20 by a red light pen, the red light is reflected by the jump sheet 41 and the reflection sheet 42 and then sent to the position of the seventh filter 57, the seventh filter 57 to the twelfth filter 62 of the filters are sequentially put in, the red light is reflected and transmitted in the seventh filter 57 to the twelfth filter 62, and after the red light spot is ensured to be in the middle of the filters, the seventh filter 57 to the twelfth filter 62 are fixed on the bottom plate 14 by glue. While the fixing jumper 41 is on the second horizontal substrate 12 and the fixing reflection sheet 42 is on the bottom plate 14.
4. Debugging channel 1: wavelength lambda of the light passing from the optical fiber 201 of the wave collimator 20 into the channel 11The power meter is connected to the optical fiber 202 of the first collimator 21, and after the optical path coupling is minimized, the first collimator 21 is fixed on the third horizontal substrate 13 by glue. When the optical path is coupled, the first collimator 21 is fixed by the fine adjustment frame to be adjusted.
5. Debugging channel 2: wavelength lambda of the light passing from the optical fiber 201 of the wave collimator 20 into the channel 22The power meter is connected with the optical fiber 203 of the second collimator 22, and after the optical path coupling is minimized, the second collimator 22 is fixed on the first horizontal substrate 11 by glue. When the optical path is coupled, the second collimator 22 is fixed by the fine adjustment frame for adjustment.
6. Debugging other channels is the same as the step 4: tuning the channel N, the wavelength λ passing from the fiber 201 of the wave-entry collimator 20 into the channel NNThe power meter is connected with the optical fiber of the Nth collimator of the channel N, and after the optical path is coupled to the minimum, the collimator is fixed on the substrate by glue.
7. After the light path is debugged, the product is manufactured through processes of UV fixing, baking, testing, packaging and the like.
Claims (4)
1. A compact WDM wavelength division multiplexer characterized by: comprises a substrate assembly; the base plate assembly comprises a bottom plate (14) and a vertical side plate (10); a supporting layer is arranged on the vertical side plate (10); the supporting layer comprises a first horizontal base plate (11), a second horizontal base plate (12) and a third horizontal base plate (13);
the vertical side plate (10) is arranged on one side of the bottom plate (14); the first horizontal base plate (11), the second horizontal base plate (12) and the third horizontal base plate (13) are all arranged on the vertical side plate (10) and are positioned above the bottom plate (14); the upper surface of the first horizontal substrate (11) is flush with the upper surface of the third horizontal substrate (13);
the second horizontal base plate (12) is positioned between the first horizontal base plate (11) and the third horizontal base plate (13); the substrate assembly is provided with a plurality of layers of wavelength division multiplexing assemblies; the wavelength division multiplexing components at the bottommost layer are arranged on the bottom plate (14), and the wavelength division multiplexing components at the other layers are arranged on the supporting layer;
the wavelength division multiplexing component comprises a first collimator group, a second collimator group, a first filter disc group and a second filter disc group; the first filter disc group and the second filter disc group are positioned between the first collimator group and the second collimator group;
the wavelength division multiplexing component arranged on the supporting layer comprises a first collimator group arranged on the first horizontal substrate (11), a second collimator group arranged on the third horizontal substrate (13), a first filter disc group arranged at one end of the second horizontal substrate (12) and a second filter disc group arranged at the other end of the second horizontal substrate (12);
the first filter disc group comprises a functional disc and a plurality of filter discs with different wave-transmitting wavelengths; the second filter disc group comprises a plurality of filter discs with different wave-transmitting wavelengths, and the wave-transmitting wavelengths of the filter discs in the first filter disc group and the second filter disc group are different;
the functional sheet in the bottommost wavelength division multiplexing component is a reflector sheet; the functional sheets in the other layer assemblies are jumping sheets; the first collimator group is provided with a wave-entering collimator (20) and other collimators, and the other collimators in the first collimator group, the filter sheet in the first filter sheet group, the filter sheet in the second filter sheet group and the collimators in the second collimator group in the wavelength division multiplexing component are in one-to-one correspondence.
2. The compact WDM wavelength division multiplexer according to claim 1, wherein: a supporting layer is arranged on the vertical side plate (10);
the first collimator group arranged on the first horizontal substrate (11) comprises a wave-entering collimator (20), a second collimator (22), a fourth collimator (24) and a sixth collimator (26); the second collimator group arranged on the third horizontal substrate (13) comprises a first collimator (21), a third collimator (23) and a fifth collimator (25);
the first filter disc group at one end of the second horizontal base plate (12) comprises a skip disc (41), a second filter disc (52), a fourth filter disc (54) and a sixth filter disc (56); the second filter disc group at the other end of the second horizontal base plate (12) comprises a first filter disc (51), a third filter disc (53) and a fifth filter disc (55);
the second collimator (22), the second filter (52), the first filter (51) and the first collimator (21) correspond to each other;
the fourth collimator (24), the fourth filter (54), the third filter (53) and the third collimator (23) correspond to each other;
the sixth collimator (26), the sixth filter (56), the fifth filter (55) and the fifth collimator (25) correspond to each other;
the jumper sheet (41) can transmit light waves with the wavelength which can be transmitted by all the first filter sheet (51), the third filter sheet (53), the fifth filter sheet (55), the second filter sheet (52), the fourth filter sheet (54) and the sixth filter sheet (56) and reflect light waves with other wavelengths;
the first collimator group of the wavelength division multiplexing assembly on the bottom plate (14) comprises an eighth collimator (28), a tenth collimator (30) and a twelfth collimator (32); the second collimator group comprises a seventh collimator (27), a ninth collimator (29) and an eleventh collimator (31); the first filter set comprises a reflection sheet (42), an eighth filter (58), a tenth filter (60) and a twelfth filter (62); the second filter disc group comprises a seventh filter disc (57), a ninth filter disc (59) and an eleventh filter disc (61);
the eighth collimator (28), the eighth filter (58), the seventh filter (57) and the seventh collimator (27) correspond to each other;
the tenth collimator (30), the tenth filter (60), the ninth filter (59) and the ninth collimator (29) correspond to each other;
the twelfth collimator (32), the twelfth filter (62), the eleventh filter (61) and the eleventh collimator (31) correspond to each other.
3. The compact WDM wavelength division multiplexer according to claim 2, wherein: a film coating layer is arranged on the jumper (41); allowing the jumper (41) to transmit 1260-1380 nm of light; reflecting light of other wavelength ranges.
4. The compact WDM wavelength division multiplexer according to claim 3, wherein: the base plate assembly is provided with a filter disc and a functional sheet placing groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022087785.4U CN212569201U (en) | 2020-09-21 | 2020-09-21 | Compact WDM wavelength division multiplexer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022087785.4U CN212569201U (en) | 2020-09-21 | 2020-09-21 | Compact WDM wavelength division multiplexer |
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| CN212569201U true CN212569201U (en) | 2021-02-19 |
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