CN216285821U - Multichannel polarization-maintaining compact type wavelength division multiplexer module - Google Patents
Multichannel polarization-maintaining compact type wavelength division multiplexer module Download PDFInfo
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- CN216285821U CN216285821U CN202122891898.4U CN202122891898U CN216285821U CN 216285821 U CN216285821 U CN 216285821U CN 202122891898 U CN202122891898 U CN 202122891898U CN 216285821 U CN216285821 U CN 216285821U
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Abstract
A multi-channel polarization-maintaining compact type wavelength division multiplexer module comprises a box body, base plates, an incoming single optical fiber collimator, an outgoing array optical fiber collimator, filter plates, carrier plates, optical wedge angle plates and a trapezoidal prism, wherein the filter plates are connected with the carrier plates and then fixed on the base plates, the outgoing array optical fiber collimator is fixed on the corresponding base plates, the incoming single optical fiber collimator is fixed on one of the base plates, the base plates are symmetrically arranged in the box body, the filter plates are arranged at the light incoming end of the outgoing array optical fiber collimator, the optical wedge angle plates are arranged at the light outgoing end of the incoming single optical fiber collimator, the trapezoidal prism is arranged at the end part of the base plates and located between the base plates, and light beams projected by the incoming single optical fiber collimator are reflected to the outgoing array optical fiber collimator by the trapezoidal prism. The wavelength division multiplexer module has small volume and small insertion loss, and can be widely applied to the field of optical fiber communication.
Description
Technical Field
The utility model relates to the technical field of optical fiber communication, in particular to a multichannel polarization-maintaining compact dense wavelength division multiplexer module.
Background
Referring to fig. 13 and 14, the conventional multi-channel WDM wavelength division multiplexer (as shown in fig. 14) is composed of a plurality of single-channel devices (composed of a double-tail optical fiber 21, a self-focusing LENS (G-LENS)22, a FILTER (FILTER)23, a large glass tube 24, a micro-LENS (C-LENS)25, a single-tail optical fiber 26, a small glass tube 27, etc. (for example, the conventional 1X8 multi-channel wavelength division multiplexer is formed by connecting 8 single-channel devices in an aggregate manner), as shown in fig. 13), and is installed in a box with a length of 100 × 80 × 10mm, and the multi-channel WDM polarization-maintaining DWDM wavelength division multiplexer is integrated by a serial connection scheme, and has a product with polarization-maintaining optical fiber, needs to be fused, has fusion loss and extinction ratio loss, and needs to be externally fixed and easily broken; in addition, the labor hour is high and the price is high due to the welding; and the volume is great, if to the demand of little space product, can't install.
Therefore, further improvements are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multichannel polarization-maintaining compact dense wavelength division multiplexer module which is simple in structure, small in size, small in insertion loss, low in cost and strong in practicability, so as to overcome the defects in the prior art.
The multichannel polarization-maintaining compact dense wavelength division multiplexer module designed according to the purpose is characterized in that: the optical fiber collimator comprises a box body, a substrate, an incoming single optical fiber collimator, an outgoing single optical fiber array collimator, a filter plate, a carrier plate, an optical wedge angle plate and a trapezoidal prism, wherein the filter plate is connected with the carrier plate and fixed on the substrate after being connected with the carrier plate, the outgoing single optical fiber array collimator is fixed on the corresponding substrate, the incoming single optical fiber collimator is fixed on one substrate, the substrates are symmetrically arranged in the box body, the filter plate is arranged at the light incoming end of the outgoing single optical fiber array collimator, the optical wedge angle plate is arranged at the light outgoing end of the incoming single optical fiber collimator, the trapezoidal prism is arranged at the end part of the substrate and located between the substrates, and light beams projected by the incoming single optical fiber collimator are reflected to the outgoing single optical fiber array collimator by the trapezoidal prism.
The light-incoming single optical fiber collimator comprises an optical fiber pigtail, a lens and a capillary tube, wherein the optical fiber pigtail is fixed in the capillary tube through glue, the lens is sleeved in the capillary tube, the optical fiber pigtail and the lens are respectively positioned at two ends of the capillary tube, and the optical fiber pigtail is obliquely arranged and has an inclination angle of 7-9 degrees.
The light-emitting array optical fiber collimator comprises a plurality of optical fiber pigtails, lenses and capillaries which are arranged in an array manner, the optical fiber pigtails are fixed in the corresponding capillaries through glue, the lenses are sleeved in the corresponding capillaries, the optical fiber pigtails and the lenses are respectively positioned at two ends of the capillaries, and the optical fiber pigtails are obliquely arranged and have an inclination angle of 7-9 degrees; four V-shaped grooves with fixed intervals are arranged on the light-emitting array optical fiber collimator, and the V-shaped grooves correspond to the optical fiber pigtails one by one.
The optical wedge angle sheet corresponds to the fiber pigtail of the light-in single fiber collimator, and the filter sheet corresponds to the fiber pigtail of the light-out array fiber collimator one by one.
The slide comprises an S1 surface, an S2 surface, an S3 surface and an S4 surface, antireflection films are plated on the S1 surface and the S3 surface, a high return film is plated on the S2 surface, a fixed incident angle is arranged on the S3 surface, and the slide is made of glass materials.
The filter is made of glass materials, a reflecting film layer is plated on one surface of the filter, the filter is pasted on the carrier through glue, and the filter and the carrier are connected and then fixed on the substrate through the glue.
The ladder-shaped prism is a light source filter device and is made of glass materials, and one surface of the ladder-shaped prism is plated with a reflecting film layer and is provided with a fixed incident angle.
The substrate is made of alloy materials.
And the optical fibers of the light inlet single optical fiber collimator and the light outlet array optical fiber collimator are fixed at the side part of the box body.
The number of the light inlet single optical fiber collimators is 1, the number of the light outlet array optical fiber collimators is 2, and the light inlet single optical fiber collimators and the light outlet array optical fiber collimators are fixed on the substrate through glue.
The wavelength division multiplexer module of the utility model has the following advantages:
1. the optical fiber collimator is formed by assembling a mini light-incoming single optical fiber collimator and two 4-fiber light-outgoing array optical fiber collimators, so that the volume of a finished product in a use environment is greatly reduced, and the volume of the finished product is 1/10 of the size of the traditional wavelength division multiplexer;
2. the optical wedge angle sheet and the trapezoidal prism are used for light path refraction with a fixed angle, so that the use of optical fibers is directly reduced, manual fusion of the optical fibers is reduced, and extinction ratio loss is reduced;
3. the filter plate is bonded with the carrier plate by glue according to requirements, so that four plates and four lenses of the existing product are replaced for bonding, and the raw material cost is reduced;
4. the incident angle of the light-incoming single optical fiber collimator is adjusted to enable light spots of the 4 channels to be emitted out from the middle of the filter, so that the light path debugging difficulty is reduced;
5. the optical path of the used filter plate adopts the optical path with glue, thereby reducing the loss of the optical signal in transmission and improving the stability of the optical path, and the defect is that high power cannot be used;
6. the plane is used for bonding, so that the stress area is large, and the stability of the light path is improved;
7. the spot space of the 4 emergent channels is equal to that of the array optical fiber collimator, so that the optical fiber collimator has wide application prospect and can be widely applied to the field of optical fiber communication.
8. And space light is used, so that the quantity and cost of raw materials are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a wavelength division multiplexer module according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an incoming single fiber collimator according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an optical fiber collimator of an outgoing light array according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another direction of the light-emitting array fiber collimator according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a filter according to an embodiment of the utility model.
Fig. 6 is a schematic structural diagram of another orientation of a filter in an embodiment of the utility model.
Fig. 7 is a schematic structural diagram of a slide according to an embodiment of the utility model.
Fig. 8 is a top view of a portion of a wavelength division multiplexer module according to an embodiment of the present invention.
Fig. 9 is a front view of a partial structure of a wavelength division multiplexer module according to an embodiment of the present invention.
Fig. 10 is a bottom view of a portion of a wavelength division multiplexer module according to an embodiment of the present invention.
Fig. 11 is a rear view of a partial structure of a wavelength division multiplexer module according to an embodiment of the present invention.
FIG. 12 is a cross-sectional view of the internal structure of an incoming single fiber collimator or an outgoing arrayed fiber collimator according to an embodiment of the present invention.
Fig. 13 is a schematic diagram of a prior art multichannel wavelength division multiplexer.
Fig. 14 is a sectional view showing a structure of a prior art single channel wavelength division multiplexer.
Detailed Description
The utility model is further described with reference to the following figures and examples.
Referring to fig. 1-12, the multi-channel polarization-maintaining compact dense wavelength division multiplexer module comprises a box body, a substrate 1, a polarization-maintaining light-entering single fiber collimator 2, a polarization-maintaining light-emitting array fiber collimator 3 and a filter 4, carrier 5, optical wedge angle piece 6 and trapezoidal prism 7, filter 4 and carrier 5 are connected, both are connected and then fixed on base plate 1, light-out array optical collimator 3 is fixed on the corresponding base plate 1, light-in single optical collimator 2 is fixed on one of base plates 1, base plates 1 are symmetrically arranged in the box body, filter 4 is arranged at the light-in end of light-out array optical collimator 3, optical wedge angle piece 6 is arranged at the light-out end of light-in single optical collimator 2, trapezoidal prism 7 is arranged at the end of base plate 1 and located between base plates 1, and trapezoidal prism 7 reflects the light beam projected by light-in single optical collimator 2 to light-out array optical collimator 3. When the wavelength division multiplexer module is installed, firstly, the filter plate 4 is bonded with the carrier plate 5 by glue according to requirements, then the bonded filter plate component is fixed on the substrate 1 by glue, then the incident angle of the light-in single optical fiber collimator 2 is adjusted to enable light spots of 4 channels to be emitted out in the middle of the filter plate 4, then the emitted light with 4 wavelengths is received by the light-out array optical fiber collimator 3, then the light-in single optical fiber collimator 2 and the light-out array optical fiber collimator 3 are fixed on the substrate 1 by glue, and finally the assembled semi-finished product is packaged in the box body; this wavelength division multiplexer module has 8 passageways, adopts free space type structure to assemble, reduces artifical butt fusion optic fibre, reduces extinction ratio loss, and insertion loss is little, reduces artifical butt fusion man-hour, and the volume only has original 1/10, can adorn in little space, but wide application in optical communication fields such as optical network system, multichannel light signal control, optical switching connected system, optic fibre debugging and measurement system, wavelength division multiplexing system.
The light-incoming single optical fiber collimator 2 comprises an optical fiber pigtail 8, a lens 9 and a capillary tube 10, wherein the optical fiber pigtail 8 is fixed in the capillary tube 10 through glue, the lens 9 is sleeved in the capillary tube 10, the optical fiber pigtail 8 and the lens 9 are respectively positioned at two ends of the capillary tube 10, and the optical fiber pigtail 8 is obliquely arranged with an inclination angle of 8 degrees; the lens 9 is a C lens or an aspheric lens having a fixed curvature.
The light-emitting array optical fiber collimator 3 comprises four optical fiber pigtails 8 arranged in an array, four lenses 9 arranged in an array and capillaries 10, wherein the optical fiber pigtails 8 are fixed in the corresponding capillaries 10 through glue, the lenses 9 are sleeved in the corresponding capillaries 10, the optical fiber pigtails 8 and the lenses 9 are respectively positioned at two ends of the capillaries 10, and the optical fiber pigtails 8 are obliquely arranged and have an inclination angle of 8 degrees; four V-shaped grooves with fixed intervals are arranged on the light-emitting array optical fiber collimator 3, and the V-shaped grooves correspond to the optical fiber pigtails 8 one by one; the optical fiber pigtail 8 is in a strip shape, the lens 9 is a C lens or an aspheric lens with fixed curvature, and the light-emitting array optical fiber collimator 3 is internally arranged in a straight line shape at a fixed interval.
The optical wedge angle sheet 6 corresponds to the optical fiber pigtail 8 of the light-in single optical fiber collimator 2, and the filter sheet 4 corresponds to the optical fiber pigtail 8 of the light-out array optical fiber collimator 3 one by one.
The slide 5 comprises an S1 surface, an S2 surface, an S3 surface and an S4 surface, antireflection films are plated on the S1 surface and the S3 surface, a high return film is plated on the S2 surface, a fixed incident angle is arranged on the S3 surface, and the slide 5 is made of a glass material.
The filter 4 is made of glass material, a reflecting film layer is plated on one surface of the filter 4, the filter 4 is adhered to the carrier 5 regularly through glue, and the filter 4 and the carrier are fixed on the substrate 1 through glue after being connected. When a broadband optical signal is input into the optical single fiber collimator 2, the filter 4 can pass through only 8 filtered wavelengths to realize wave splitting; when 8 single-point optical signals are input into the two light-emitting array optical fiber collimators 3, the filter 4 combines the light into the light-entering single optical fiber collimator 2 to realize wave combination; the above two optical paths are combined and split by the filter 4.
The trapezoidal prism 7 is a light source filter device and is made of a glass material, one surface of the trapezoidal prism 7 is plated with a reflecting film layer, and a fixed incident angle is arranged; the trapezoidal prism 7 can filter out inherent wavelengths.
The substrate 1 is made of an alloy material and is insensitive to temperature, so that the optical assembly is not affected by temperature.
The optical fibers of the light inlet single optical fiber collimator 2 and the light outlet array optical fiber collimator 3 are fixed on the side part of the box body, 1 light inlet single optical fiber collimator 2 is arranged, 2 light outlet array optical fiber collimators 3 are arranged, and the light inlet single optical fiber collimator 2 and the light outlet array optical fiber collimator 3 are fixed on the substrate 1 through glue; every light-emitting array fiber collimator 3 has 8 light-emitting fiber collimator 3.1, and wherein 4 light-emitting fiber collimator 3.1 are located the upside of base plate 1, are the array and arrange, and 4 are located the downside of base plate 1 in addition, are the array and arrange, and filter 4 and light-emitting fiber collimator 3.1 one-to-one, therefore wavelength division multiplexer module has 8 passageways.
And (3) designing an optical path of the wavelength division multiplexer module:
1. placing an incoming single optical fiber collimator 2 on a substrate 1, enabling linear polarization light to enter from the incoming single optical fiber collimator 2, collimating a light path through a lens 9, enabling the light to be refracted by a certain angle through an optical wedge angle sheet 6, enabling the light to pass through a trapezoid prism 7 with a fixed incident angle, enabling the light to be refracted to the lower surface of the substrate 1, and fixing the incoming single optical fiber collimator 2 and the substrate 1 through glue;
2. when the folded light passes through the filter 4 with a fixed angle (the filter 4 on the lower side of the substrate 1) in parallel, the light with ITU standard wavelength can transmit, is received by the corresponding light-emitting optical fiber collimator 3.1 (the light-emitting optical fiber collimator 3.1 on the lower side of the substrate 1), and is aligned with the light-entering single optical fiber collimator 2 to form a light axis, and other wavelengths of light can be reflected to enter the trapezoidal prism 7; the filter 4 and the emergent optical fiber collimator 3.1 are fixed with the substrate 1;
3. when the folded light passes through the filter 4 with a fixed angle (the filter 4 on the upper side of the substrate 1) in parallel, the light with ITU standard wavelength can penetrate through, is received by the corresponding light-emitting optical fiber collimator 3.1 (the light-emitting optical fiber collimator 3.1 on the upper side of the substrate 1), and is aligned with the light-entering single optical fiber collimator 2 to form a light axis, and other wavelengths of light can be reflected to enter the trapezoidal prism 7; the filter 4 and the emergent optical fiber collimator 3.1 are fixed with the substrate 1;
4. after the light path is fixed, the box body is used for sealing.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and the utility model is intended to be protected by the following claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a compact intensive wavelength division multiplexer module of multichannel polarization-maintaining which characterized in that: comprises a box body, a base plate (1), a light-in single optical fiber collimator (2), a light-out array optical fiber collimator (3), a filter plate (4), a carrier plate (5), an optical wedge angle plate (6) and a trapezoidal prism (7), the filter (4) is connected with the carrier (5), the filter and the carrier are connected and then fixed on the substrate (1), the light-emitting array optical fiber collimator (3) is fixed on the corresponding substrate (1), the light-entering single optical fiber collimator (2) is fixed on one of the substrates (1), the substrates (1) are symmetrically arranged in the box body, the filter (4) is arranged at the light-entering end of the light-emitting array optical fiber collimator (3), the optical wedge angle sheet (6) is arranged at the light-exiting end of the light-entering single optical fiber collimator (2), the trapezoidal prism (7) is arranged at the end part of the substrate (1) and positioned between the substrates (1), and the light beams projected by the light-entering single optical fiber collimator (2) are reflected to the light-emitting array optical fiber collimator (3) by the trapezoidal prism (7).
2. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 1, wherein: the light-incoming single optical fiber collimator (2) comprises an optical fiber pigtail (8), a lens (9) and a capillary tube (10), the optical fiber pigtail (8) is fixed in the capillary tube (10) through glue, the lens (9) is sleeved in the capillary tube (10), the optical fiber pigtail (8) and the lens (9) are respectively located at two ends of the capillary tube (10), and the optical fiber pigtail (8) is obliquely arranged, and the inclination angle of the optical fiber pigtail is 7-9 degrees.
3. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 2, wherein: the light-emitting array optical fiber collimator (3) comprises a plurality of optical fiber pigtails (8), lenses (9) and capillaries (10) which are arranged in an array, the optical fiber pigtails (8) are fixed in the corresponding capillaries (10) through glue, the lenses (9) are sleeved in the corresponding capillaries (10), the optical fiber pigtails (8) and the lenses (9) are respectively positioned at two ends of the capillaries (10), the optical fiber pigtails (8) are obliquely arranged, and the inclination angle of the optical fiber pigtails (8) is 7-9 degrees; the light-emitting array optical fiber collimator (3) is provided with a plurality of V-shaped grooves with fixed intervals, and the V-shaped grooves correspond to the optical fiber pigtails (8) one by one.
4. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 3, wherein: the optical wedge angle sheet (6) corresponds to the optical fiber pigtail (8) of the light-in single optical fiber collimator (2), and the filter sheets (4) correspond to the optical fiber pigtail (8) of the light-out array optical fiber collimator (3) one by one.
5. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 4, wherein: the slide (5) comprises an S1 surface, an S2 surface, an S3 surface and an S4 surface, antireflection films are plated on the S1 surface and the S3 surface, a super-reflecting film is plated on the S2 surface, a fixed incident angle is arranged on the S3 surface, and the slide (5) is made of a glass material.
6. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 1, wherein: the filter (4) is made of glass material, a reflecting film layer is plated on one surface of the filter, the filter (4) is pasted on the carrier (5) through glue, and the filter and the carrier are fixed on the substrate (1) through the glue after being connected.
7. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 1, wherein: the trapezoidal prism (7) is a light source filter device and is made of glass materials, and one surface of the trapezoidal prism (7) is plated with a reflecting film layer and is provided with a fixed incident angle.
8. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 1, wherein: the substrate (1) is made of alloy materials.
9. The multi-channel polarization maintaining compact dense wavelength division multiplexer module of claim 1, wherein: and the optical fibers of the light inlet single optical fiber collimator (2) and the light outlet array optical fiber collimator (3) are fixed at the side part of the box body.
10. A multi-channel polarization maintaining compact wavelength division multiplexer module according to any one of claims 1-9, wherein: the number of the light-in single optical fiber collimators (2) is 1, the number of the light-out array optical fiber collimators (3) is 2, and the light-in single optical fiber collimators (2) and the light-out array optical fiber collimators (3) are fixed on the substrate (1) through glue.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859475A (en) * | 2022-05-25 | 2022-08-05 | 珠海光焱科技有限公司 | High-power bandwidth filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859475A (en) * | 2022-05-25 | 2022-08-05 | 珠海光焱科技有限公司 | High-power bandwidth filter |
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