CN211878229U - Compact wavelength division device with low-loss upgrading port - Google Patents
Compact wavelength division device with low-loss upgrading port Download PDFInfo
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- CN211878229U CN211878229U CN202020640403.3U CN202020640403U CN211878229U CN 211878229 U CN211878229 U CN 211878229U CN 202020640403 U CN202020640403 U CN 202020640403U CN 211878229 U CN211878229 U CN 211878229U
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Abstract
The utility model discloses a take compact wavelength division device of low-loss upgrade port, include: a dual fiber collimator for receiving an incident optical signal; at least two optical fiber output collimators for outputting optical signals of different wave bands; the wavelength division module is used for distributing the optical signals output by the double optical fiber collimators to each optical fiber output collimator; wherein the wavelength division module comprises at least two wavelength division units, each of the fibre output collimators being arranged to receive an output optical signal from a respective one of the wavelength division units; and the output port of the double-optical-fiber collimator is provided with an optical filter, and the optical filter is used for performing wave splitting on the optical signal output from the double-optical-fiber collimator to obtain a preset wavelength optical signal to the wavelength division module and reflecting the residual optical signal to the double-optical-fiber collimator. According to the utility model discloses, it uses reflection optic fibre as the upgrading port, both can regard the reflection optic fibre of two fiber collimator as the upgrading port, can reach compact structure's purpose again.
Description
Technical Field
The utility model relates to an optical fiber communication field, in particular to take compact wavelength division device of low-loss upgrade port.
Background
In the field of optical fiber communication, it is known to use wavelength division devices of different structures to separate optical signals of different wavelengths. In the process of studying and implementing optical signal separation, the utility model discloses a discovery prior art wavelength division device often can be equipped with the upgrade port based on following reason: firstly, in order to reduce the initial network investment pressure, after the investment is recovered, the capacity is expanded according to the service condition; secondly, increasing the number of wavelength division channels for areas with more services, and correspondingly reducing the number of wavelength division channels for areas with less services; finally, the loss of the wavelength division module in the case of cascade can be reduced.
However, the utility model discloses a discovery in the process of research and realization with the wavelength division device of upgrading port has the following problem at least in the prior art with the wavelength division device of upgrading port:
firstly, the insertion loss of an upgrade port is overlarge; secondly, the overall device is too bulky to be reduced.
In view of the above, there is a need to develop a compact wavelength division device with a low-loss upgrade port to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the prior art, the utility model mainly aims at providing a take compact wave division device of low-loss upgrade port, its mode through setting up two fiber collimator and combining WDMfilter structure at light signal incident end to reflection optic fibre is as the upgrade port, both can regard as the upgrade port with the reflection optic fibre of two fiber collimator, can reach compact structure's purpose again.
Another object of the present invention is to provide a compact wavelength division device with a low loss upgrade port, wherein the light path of the upgrade port formed by the device is only reflected once, and unnecessary routes in the middle are reduced, thereby achieving the purpose of realizing the upgrade port with low loss.
In order to realize the above objects and other advantages in accordance with the present invention, there is provided a compact wavelength division device with a low loss upgrade port, comprising:
a dual fiber collimator for receiving an incident optical signal;
at least two optical fiber output collimators for outputting optical signals of different wave bands; and
distributing the optical signals output by the double optical fiber collimators to a wavelength division module of each optical fiber output collimator;
wherein the wavelength division module comprises at least two wavelength division units, each of the fibre output collimators being arranged to receive an output optical signal from a respective one of the wavelength division units; and the output port of the double-optical-fiber collimator is provided with an optical filter, and the optical filter is used for performing wave splitting on the optical signal output from the double-optical-fiber collimator to obtain a preset wavelength optical signal to the wavelength division module and reflecting the residual optical signal to the double-optical-fiber collimator.
Optionally, the dual optical fiber collimator is connected to:
a common end optical fiber for guiding an input of an incident optical signal; and
a reflective optical fiber for guiding the remaining optical signal reflected by the optical filter.
Optionally, the number of optical signals of the preset wavelength optical signal is consistent with the number of the optical fiber output collimators.
Optionally, the wavelength division unit includes:
an incident prism through which an optical signal passes; and
and the filter plate is used for performing wave splitting on the optical signal passing through the incidence prism to obtain a wavelength optical signal with a set wavelength, transmitting the wavelength optical signal to the corresponding optical fiber output collimator and reflecting the rest optical signals to the incidence prism.
Optionally, the number of optical signals of the preset wavelength optical signal is one.
Optionally, two optical fiber output collimators are arranged on two opposite sides of the wavelength division module.
Optionally, each wavelength division unit and the corresponding optical fiber output collimator are in the same straight line.
Optionally, every two optical fiber output collimators positioned at the same side of the wavelength division module are parallel to each other.
One of the above technical solutions has the following advantages or beneficial effects: because the double-optical-fiber collimator is arranged at the light signal incidence end and the WDMfilter structure is combined, the reflecting optical fiber is used as the upgrading port, the reflecting optical fiber of the double-optical-fiber collimator can be used as the upgrading port, and the purpose of compact structure can be achieved.
Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the light path of the formed upgrading port only passes through one-time reflection, unnecessary intermediate routes are reduced, and the purpose of upgrading the port with low loss is achieved.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention, wherein:
fig. 1 is a diagram illustrating an optical path structure of a compact wavelength division device with a low loss upgrade port according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.
Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
According to an embodiment of the present invention, with reference to the illustration of fig. 1, it can be seen that the compact wavelength division device 1 with a low loss upgrade port comprises:
a dual fiber collimator 11 for receiving an incident optical signal;
at least two optical fiber output collimators for outputting optical signals of different wave bands; and
the wavelength division module 12 is used for distributing the optical signals output by the dual optical fiber collimators 11 to each optical fiber output collimator;
wherein the wavelength division module 12 comprises at least two wavelength division units, each of the fiber output collimators being arranged to receive an output optical signal from a respective one of the wavelength division units; the output port of the dual optical fiber collimator 11 is provided with an optical filter 111, and the optical filter 111 is configured to perform wavelength division on an optical signal output from the dual optical fiber collimator 11 to obtain a preset wavelength optical signal, and to reflect a remaining optical signal back to the dual optical fiber collimator 11 to the wavelength division module 12.
In a specific implementation process, the dual optical fiber collimator 11, the wavelength division module 12, and the optical fiber output collimator are all fixedly mounted on the substrate.
Further, the compact wavelength division device 1 with a low-loss upgrade port further includes a housing for sealing the dual fiber collimator 11, the wavelength division module 12, the fiber output collimator, and the substrate.
Further, the dual-fiber collimator 11 is connected with:
a common port optical fiber 113 for guiding an input of an incident optical signal; and
a reflection optical fiber 114 for guiding the remaining optical signal reflected by the optical filter 111. The reflective optical fiber 114 may then be used as an upgrade port.
Further, the number of optical signals of the preset wavelength optical signal is consistent with the number of the optical fiber output collimators. In the embodiment shown in fig. 1, it can be seen that the fiber output collimator is provided with 4 collimators, namely, a first collimator 13, a second collimator 14, a third collimator 15 and a fourth collimator 16, and correspondingly, the wavelength division unit is also provided with 4 collimators, namely, a first wavelength division unit 121, a second wavelength division unit 122, a third wavelength division unit 123 and a fourth wavelength division unit 124, which means that the incident light signal is mixed with at least 5 light waves with different wavelengths, and in the embodiment shown in fig. 1, the incident light is mixed with 8 light waves with different wavelengths, which are respectively named as light waves λ according to different wavelengths1Light wave lambda2Light wave lambda3Light wave lambda4Light wave lambda5Light wave lambda6Light wave lambda7And light wave lambda8Wherein the filter 111 allows the light wave lambda1Light wave lambda2Light wave lambda3And light wave lambda4Passing through the four optical waves, i.e. the predetermined wavelength optical signal, and the optical wave λ5Light wave lambda6Light wave lambda7And light wave lambda8It will be reflected back to the dual fibre collimator 11.
Further, the wavelength division unit includes:
an incident prism through which an optical signal passes; and
and the filter plate is used for performing wave splitting on the optical signal passing through the incidence prism to obtain a wavelength optical signal with a set wavelength, transmitting the wavelength optical signal to the corresponding optical fiber output collimator and reflecting the rest optical signals to the incidence prism.
Further, the number of optical signals of the optical signal with the preset wavelength is one.
In the embodiment shown in fig. 1, the first wavelength division unit 121 allows an optical wave λ1Passes through to be received by the first collimator 13, and the light wave λ2Light wave lambda3Light wave lambda4Will be reflected, the light wave lambda1I.e. the wavelength light signal with the setting wavelength of the first wavelength division unit 121; the second wavelength division unit 122 allows the light wave λ2Passes through to be received by the second collimator 14, while the light wave λ3Light wave lambda4Will be reflected, the light wave lambda2I.e. the wavelength signal with the set wavelength of the second wavelength division unit 122; the third wavelength division unit 123 allows the light wave λ3Passes through to be received by the third collimator 15, while the light wave λ4Will be reflected, the light wave lambda3I.e. the wavelength optical signal with the set wavelength of the third wavelength division unit 123; the fourth wavelength division unit 124 allows the light wave λ4Passes through to be received by the fourth collimator 16, the light wave λ4I.e. the wavelength signal with the setting wavelength of the fourth wavelength division unit 124.
Referring again to fig. 1, two of the fiber output collimators are disposed about opposite sides of the wavelength division module 12. As shown in fig. 1, the first collimator 13 is disposed at the right side of the wavelength division module 12, the second collimator 14 is disposed at the left side of the wavelength division module 12, the third collimator 15 is disposed at the right side of the wavelength division module 12, and the fourth collimator 16 is disposed at the left side of the wavelength division module 12.
Further, each wavelength division unit is in the same straight line with the corresponding optical fiber output collimator.
Furthermore, every two optical fiber output collimators positioned at the same side of the wavelength division module 12 are parallel to each other. As shown in fig. 1, the first collimator 13 and the third collimator 15 are located at the right side of the wavelength division module 12, so that the first collimator 13 is parallel to the third collimator 15, and the second collimator 14 and the fourth collimator 16 are located at the left side of the wavelength division module 12, so that the second collimator 14 is parallel to the fourth collimator 16.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (8)
1. A compact wavelength division device with a low loss upgrade port, comprising:
a dual fibre collimator (11) for receiving an incident optical signal;
at least two optical fiber output collimators for outputting optical signals of different wave bands; and
the wavelength division module (12) is used for distributing the optical signals output by the double optical fiber collimators (11) to each optical fiber output collimator;
wherein the wavelength division module (12) comprises at least two wavelength division units, each of the fibre output collimators being arranged to receive an output optical signal from a respective one of the wavelength division units; the output port of the double-optical-fiber collimator (11) is provided with an optical filter (111), and the optical filter (111) is used for performing wave splitting on an optical signal output from the double-optical-fiber collimator (11) to obtain a preset wavelength optical signal to the wavelength division module (12) and reflecting the residual optical signal to the double-optical-fiber collimator (11).
2. The compact wavelength division device with low loss upgrade port according to claim 1, characterized in that the dual fiber collimator (11) has connected thereto:
a common port optical fiber (113) for guiding an input of an incident optical signal; and
a reflective optical fiber (114) for guiding the residual optical signal reflected by the optical filter (111).
3. The compact wavelength division device with a low loss upgrade port according to claim 1, wherein the number of optical signals of the preset wavelength optical signal corresponds to the number of the fiber output collimators.
4. The compact wavelength division device with a low loss upgrade port according to claim 1, wherein the wavelength division unit comprises:
an incident prism through which an optical signal passes; and
and the filter plate is used for performing wave splitting on the optical signal passing through the incidence prism to obtain a wavelength optical signal with a set wavelength, transmitting the wavelength optical signal to the corresponding optical fiber output collimator and reflecting the rest optical signals to the incidence prism.
5. The compact wavelength division device with a low loss upgrade port according to claim 4, wherein the optical signal number of the predetermined wavelength optical signal is one.
6. The compact wavelength division device with low loss upgrade port according to claim 1, wherein two of said fiber output collimators are disposed with respect to opposite sides of said wavelength division module (12).
7. The compact wavelength division device with a low loss upgrade port according to claim 6, wherein each of the wavelength division units is collinear with a corresponding fiber output collimator.
8. The device according to claim 6, wherein two of said fiber output collimators on the same side of said wavelength division module (12) are parallel to each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020640403.3U CN211878229U (en) | 2020-04-24 | 2020-04-24 | Compact wavelength division device with low-loss upgrading port |
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| CN202020640403.3U CN211878229U (en) | 2020-04-24 | 2020-04-24 | Compact wavelength division device with low-loss upgrading port |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381324A (en) * | 2020-04-24 | 2020-07-07 | 苏州伽蓝致远电子科技股份有限公司 | Compact wavelength division device with low-loss upgrading port |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381324A (en) * | 2020-04-24 | 2020-07-07 | 苏州伽蓝致远电子科技股份有限公司 | Compact wavelength division device with low-loss upgrading port |
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