CN113917628B - Combo Plus OLT optical device - Google Patents
Combo Plus OLT optical device Download PDFInfo
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- CN113917628B CN113917628B CN202111081698.0A CN202111081698A CN113917628B CN 113917628 B CN113917628 B CN 113917628B CN 202111081698 A CN202111081698 A CN 202111081698A CN 113917628 B CN113917628 B CN 113917628B
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4287—Optical modules with tapping or launching means through the surface of the waveguide
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4295—Coupling light guides with opto-electronic elements coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors
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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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a comboPlusOLT optical device, which belongs to the technical field of optical communication and comprises a passive optical network receiving assembly, a forward receiving assembly, a first optical transmitting assembly, a second optical transmitting assembly and a third optical transmitting assembly, wherein the passive optical network receiving assembly is configured to respectively receive an optical signal with the wavelength of 1270nm and an optical signal with the wavelength of 1310 nm; the forward receiving component is configured to receive an optical signal having a wavelength of 1370 nm; the first light emitting assembly is configured to emit an optical signal having a wavelength of 1577 nm; the second light emitting component is configured to emit an optical signal having a wavelength of 1490 nm; the third light emitting assembly is configured to emit an optical signal having a wavelength of 1430 nm. The invention achieves the technical effects of utilizing the existing FTTx infrastructure resources, enabling the fixed and mobile networks to share the infrastructure resources, and simultaneously effectively reducing the 5G deployment cost.
Description
Technical Field
The invention belongs to the technical field of optical communication, and particularly relates to a Combo Plus OLT optical device.
Background
The fifth generation mobile communication technology (5G for short) is a new generation broadband mobile communication technology with the characteristics of high speed, low time delay and large connection, and is a network infrastructure for realizing man-machine object interconnection. With the acceleration of 5G deployment, the infrastructure of the shared FTTx network is a consensus for realizing economic and efficient construction.
Currently, in the existing optical communication technology, it is generally difficult to fully utilize the infrastructure resources of the existing FTTx, allow the fixed and mobile networks to share the infrastructure resources, and finally provide stable FTTx and 5G gigabit access for users, which also cannot effectively reduce the 5G deployment cost and shorten the time to market.
In summary, in the existing optical communication technology, there is a technical problem that it is difficult to use the existing FTTx infrastructure resources, so that the fixed and mobile networks share the infrastructure resources, and it is difficult to effectively reduce the 5G deployment cost.
Disclosure of Invention
The invention aims to solve the technical problems that the existing FTTx infrastructure resources are difficult to utilize, the fixed and mobile networks share the infrastructure resources, and the 5G deployment cost is difficult to effectively reduce.
In order to solve the technical problems, the invention provides a Combo Plus OLT optical device, which is characterized in that the Combo Plus OLT optical device comprises: a passive optical network receiving component configured to receive an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively; a forward-receiving component configured to receive an optical signal having a wavelength of 1370 nm; a first light emitting assembly configured to emit an optical signal having a wavelength of 1577 nm; a second light emitting assembly configured to emit an optical signal having a wavelength of 1490 nm; and a third light emitting assembly configured to emit an optical signal having a wavelength of 1430 nm.
Further, the passive optical network receiving component includes: a second avalanche photodiode transistor element for receiving an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively; a fourth 0 ° filter configured to receive the optical signal having the wavelength of 1270 nm; a fifth 0 ° filter configured to receive the optical signal having the wavelength of 1310 nm.
Further, the passive optical network receiving component further includes: an array Si-clens model lens and a 45 ° splitting prism, the array Si-clens model lens configured to receive the optical signal at 1270nm wavelength and the optical signal at 1310nm wavelength from the 45 ° splitting prism; the 45 ° spectroscopic prism is configured to split an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm of the array Si-clens type lens, and transmit the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1577 nm.
Further, the forwarding receiving component includes: a first avalanche photodiode transistor element for receiving an optical signal having a wavelength of 1370 nm; a sixth 0 ° filter configured to transmit the optical signal having the wavelength of 1370 nm; a first 45 ° filter configured to transmit the optical signal having a wavelength of 1577nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1430nm, and to reflect the optical signal having a wavelength of 1370 nm; wherein the 45 ° beam splitting prism reflects the optical signal having a wavelength of 1270nm and the optical signal having a wavelength of 1310nm, and transmits the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1577 nm.
Further, the first light emitting assembly includes: an electroabsorption modulated laser transistor element for emitting an optical signal having a wavelength of 1577 nm; a third 45 ° filter configured to transmit an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element; a second 45 ° filter configured to transmit an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element; an isolator that transmits an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element and that does not reflect the optical signal having a wavelength of 1577nm back to the light source; a collimating ball lens configured to collimate an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element; wherein an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element is transmitted through the first 45 ° filter; the optical signal with the wavelength of 1577nm from the electroabsorption modulated laser transistor element is transmitted through the 45 ° splitting prism.
Further, the second light emitting assembly includes: a first distributed feedback laser transistor element for emitting an optical signal having a wavelength of 1490 nm; wherein the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element is split by the third 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the second 45 ° filter; transmitting a 1490nm wavelength optical signal from the first distributed feedback laser transistor element through the isolator and causing the 1490nm wavelength optical signal not to be reflected back to the light source; collimating light spots on the optical signals with the wavelength of 1490nm from the first distributed feedback laser transistor element through the collimating ball lens; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the first 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the 45 ° splitting prism.
Further, the third light emitting assembly includes: a second distributed feedback laser transistor element for emitting an optical signal having a wavelength of 1430 nm; wherein an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element is reflected by the second 45 ° filter; collimating an optical signal with the wavelength of 1490nm from the electroabsorption modulated laser transistor element by the collimating ball lens; transmitting a 1430nm wavelength optical signal from the second distributed feedback laser transistor element through the isolator and preventing the 1430nm wavelength optical signal from being reflected back to the light source; transmitting an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element through the first 45 ° filter; the optical signal with the wavelength of 1430nm from the second distributed feedback laser transistor element is transmitted through the 45 ° splitting prism.
Further, the Combo Plus OLT optical device further includes: and the optical fiber collimator is used for converging the collimated optical signals to the optical fibers.
The beneficial effects are that:
the invention provides a Combo Plus OLT optical device, which is configured to receive 1270nm wavelength optical signals and 1310nm wavelength optical signals respectively through a passive optical network receiving component, a front transmission receiving component is configured to receive 1370nm wavelength optical signals, a first optical transmitting component is configured to transmit 1577nm wavelength optical signals, a second optical transmitting component is configured to transmit 1490nm wavelength optical signals, and a third optical transmitting component is configured to transmit 1430nm wavelength optical signals. Thus, the structured optical signal can realize that the existing FTTx infrastructure resource is utilized, so that the fixed network and the mobile network share the infrastructure resource, and simultaneously realize that the FTTx and 5G forward transmission are supported on the same optical fiber, thereby effectively reducing the 5G deployment cost and shortening the time to market. Therefore, the technical effect that the existing FTTx infrastructure resources can be utilized, the fixed network and the mobile network can share the infrastructure resources, and the 5G deployment cost can be effectively reduced is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an optical path of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a second optical path of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 4 is a schematic diagram III of an optical path of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an optical path of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an optical path of a Combo Plus OLT optical device according to an embodiment of the present invention.
Detailed Description
The invention discloses a Combo Plus OLT optical device, which is configured to receive an optical signal with 1270nm wavelength and an optical signal with 1310nm wavelength respectively through a passive optical network receiving component, a front transmission receiving component is configured to receive an optical signal with 1370nm wavelength, a first optical transmitting component is configured to transmit an optical signal with 1577nm wavelength, a second optical transmitting component is configured to transmit an optical signal with 1490nm wavelength, and a third optical transmitting component is configured to transmit an optical signal with 1430nm wavelength. Thus, the structured optical signal can realize that the existing FTTx infrastructure resource is utilized, so that the fixed network and the mobile network share the infrastructure resource, and simultaneously realize that the FTTx and 5G forward transmission are supported on the same optical fiber, thereby effectively reducing the 5G deployment cost and shortening the time to market. Therefore, the technical effect that the existing FTTx infrastructure resources can be utilized, the fixed network and the mobile network can share the infrastructure resources, and the 5G deployment cost can be effectively reduced is achieved.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention are within the scope of the present invention; wherein reference to "and/or" in this embodiment indicates and/or two cases, in other words, reference to a and/or B in the embodiments of the present invention indicates two cases of a and B, A or B, and describes three states in which a and B exist, such as a and/or B, and indicates: only A and not B; only B and not A; includes A and B.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. Spatially relative terms, such as "below," "above," and the like, may be used herein to facilitate a description of one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" would then be oriented "on" other elements or features. Thus, the exemplary term "below" may include both above and below orientations. The device may be oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Also, in embodiments of the present invention, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and the like are used in the embodiments of the present invention for illustrative purposes only and are not intended to limit the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, fig. 1 is a schematic diagram of a Combo Plus OLT optical device provided by an embodiment of the present invention, fig. 2 is a schematic diagram of a first optical path of a Combo Plus OLT optical device provided by an embodiment of the present invention, fig. 3 is a schematic diagram of a second optical path of a Combo Plus OLT optical device provided by an embodiment of the present invention, fig. 4 is a schematic diagram of a third optical path of a Combo Plus OLT optical device provided by an embodiment of the present invention, fig. 5 is a schematic diagram of a fourth optical path of a Combo Plus OLT optical device provided by an embodiment of the present invention, and fig. 6 is a schematic diagram of a fifth optical path of a Combo Plus OLT optical device provided by an embodiment of the present invention. The embodiment of the invention provides a Combo Plus OLT optical device, which comprises a passive optical network receiving assembly, a forward transmission receiving assembly, a first optical transmitting assembly, a second optical transmitting assembly and a third optical transmitting assembly, wherein the passive optical network receiving assembly, the forward transmission receiving assembly, the first optical transmitting assembly, the second optical transmitting assembly and the third optical transmitting assembly are respectively described in detail:
for passive optical network receiving components:
the passive optical network receiving component is configured to receive an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively. The passive optical network receiving component may include: a second avalanche photodiode transistor element 5, a fourth 0 ° filter 12, a fifth 0 ° filter 13, an array Si-clens model lens 6 and a 45 ° dichroic prism 8, the second avalanche photodiode transistor element 5 being configured to receive an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively, the fourth 0 ° filter 12 being configured to receive the optical signal having a wavelength of 1270nm, the fifth 0 ° filter 13 being configured to receive the optical signal having a wavelength of 1310nm, the array Si-clens model lens 6 being configured to receive the optical signal having a wavelength of 1270nm from the 45 ° dichroic prism 8, and the optical signal having a wavelength of 1310 nm; the 45 ° spectroscopic prism 8 is arranged to the lens 6 of the array Si-clens type to split an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, and transmit the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1577 nm.
Specifically, the passive optical network receiving component may refer to a PON ROSA, which is configured to receive an optical signal at 1270nm wavelength and an optical signal at 1310nm wavelength, respectively. The second avalanche photodiode element 5 (i.e., the avalanche photodiode element profile) may be referred TO as a dual-core APD TO-KAN, the second avalanche photodiode element 5 being configured TO receive 1270nm wavelength optical signal and 1310nm wavelength optical signal, respectively. The fourth 0 filter 12 is configured to receive optical signals at 1270nm wavelength and the remaining optical signals are isolated by the fourth 0 filter 12. The fifth 0 deg. filter 13 is configured to receive an optical signal of 1310nm wavelength, and the remaining optical signals are isolated by the fifth 0 deg. filter 13. The array Si-clens model lens 6 is configured to receive 1270nm wavelength optical signals from the 45 ° dichroic prism 8 and 1310nm wavelength optical signals. The 45 ° spectroscopic prism 8 is configured to split 1270nm wavelength optical signals and 1310nm wavelength optical signals to the array Si-clens type lens 6, while transmitting the optical signals having 1370nm, 1430nm, 1490nm and 1577nm wavelengths through the 45 ° spectroscopic prism 8.
For a forward receiving component:
the forward receiving assembly is configured to receive an optical signal having a wavelength of 1370 nm. The forward receiving assembly may comprise a first avalanche photodiode transistor element 4, a sixth 0 ° filter 14 and a first 45 ° filter 9, the first avalanche photodiode element 4 being configured to receive an optical signal having a wavelength of 1370nm, the sixth 0 ° filter 14 being configured to transmit the optical signal having a wavelength of 1370nm, the first 45 ° filter 9 being configured to transmit the optical signal having a wavelength of 1577nm, the optical signal having a wavelength of 1490nm and the optical signal having a wavelength of 1430nm, and to reflect the optical signal having a wavelength of 1370nm, wherein the optical signal having a wavelength of 1370nm and the optical signal having a wavelength of 1310nm are reflected by the 45 ° splitting prism 8, and the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm and the optical signal having a wavelength of 1577nm are transmitted.
Specifically, the forwarding and receiving component may refer to a forwarding ROSA, and the forwarding and receiving component is configured to receive an optical signal having a wavelength of 1370 nm. The first avalanche photodiode transistor element 4 (i.e. the avalanche photodiode element profile) is for receiving an optical signal at 1370nm wavelength. The sixth 0 ° filter 14 is configured to transmit an optical signal of 1370nm wavelength, and the remaining optical signals are isolated by the sixth 0 ° filter 14. The first 45 deg. filter 9 is configured to transmit optical signals having wavelengths of 1577nm, 1490nm and 1430nm and to cause 1370nm optical signal to be reflected. The 45 ° dichroic prism 8 may be configured to reflect optical signals of 1270nm and 1310nm wavelengths and transmit optical signals of 1370nm, 1430nm, 1490nm and 1577nm wavelengths. The optical signals of the different signals can be collimated by means of a fiber collimator 7 of the type of collimating accept. Therefore, two groups of ROSA are adopted, one group of PON ROSA corresponds to two groups of optical signals with different wavelengths, an external wave division scheme is adopted, and the silicon lens is added, so that the coupling tolerance is larger, the coupling efficiency is higher, and the product requirement can be met even though the silicon lens belongs to temperature sensitivity. Because 1370nm wavelength optical signal dispersion and loss are relatively large, the optical signal dispersion and loss are required to be transmitted for a longer distance, and in addition, a group of front-pass ROSAs adopts a 25g 1370nm APD scheme, and the external arrangement of the 0-degree filter can better filter electric crosstalk.
For the first light emitting component:
the first light emitting assembly is configured to emit an optical signal having a wavelength of 1577 nm. The first light emitting assembly comprises an electro-absorption modulated laser transistor element 1, a third 45 ° filter 11, a second 45 ° filter 10, an isolator 15 and a collimator lens 16, the electro-absorption modulated laser transistor element 1 being configured to emit an optical signal having a wavelength of 1577nm, the third 45 ° filter 11 being configured to transmit the optical signal having a wavelength of 1577nm from the electro-absorption modulated laser transistor element 1, the second 45 ° filter 10 being configured to transmit the optical signal having a wavelength of 1577nm from the electro-absorption modulated laser transistor element 1, the isolator 15 being configured to transmit the optical signal having a wavelength of 1577nm from the electro-absorption modulated laser transistor element 1 and to not reflect the optical signal having a wavelength of 1577nm back to the light source; the collimating ball lens 16 is configured to collimate the light signal with a wavelength of 1577nm from the electro-absorption modulating laser transistor element 1, wherein the light signal with a wavelength of 1577nm from the electro-absorption modulating laser transistor element 1 is transmitted through the first 45 ° filter 9; the optical signal with the wavelength of 1577nm from the electroabsorption modulated laser transistor element 1 is transmitted through the 45 ° dichroic prism 8.
In particular, the first light emitting assembly may refer to a first set of TOSAs configured to emit an optical signal at a wavelength of 1577 nm. The electro-absorption modulated laser transistor element 1 (i.e. electro-absorption modulated laser transistor profile) may be referred to as 10g 1577emlto-KAN, by which the optical signal of 1577nm wavelength is emitted by the electro-absorption modulated laser transistor element 1, and the third 45 ° filter 11 may be configured to transmit the 1577nm optical signal from the 10g 1577 emlto-KAN. The second 45 deg. filter 10 may be configured to transmit 1577nm optical signals from 10g 1577 emlto-KAN. Isolator 15 may transmit 1577nm optical signals from 10g 1577eml TO-KAN without allowing light TO reflect back TO the light source. The collimator ball lens 16 may be configured to collimate the light spot of the 1577nm wavelength light signal from the 10G 1577 EMLTO-KAN. The first 45 deg. filter 9 may be configured to transmit 1577nm optical signals from 10g 1577 emlto-KAN. The 45 ° splitting prism 8 may be configured to transmit 1577nm optical signals from 10g 1577 emlto-KAN. The collimated optical signal may be converged into an optical fiber by a fiber collimator 7 of the type collimated accept.
For the second light emitting assembly:
the second light emitting assembly is configured to emit an optical signal having a wavelength of 1490 nm. The second light emitting component comprises a first distributed feedback laser transistor element 2, wherein the first distributed feedback laser transistor element 2 is used for emitting an optical signal with the wavelength of 1490nm, and the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element 2 is split by the third 45 DEG filter 11; transmitting an optical signal of 1490nm wavelength from the first distributed feedback laser transistor element 2 through the second 45 ° filter 10; transmitting the 1490nm wavelength optical signal from the first distributed feedback laser transistor element 2 through the isolator 15 and preventing the 1490nm wavelength optical signal from being reflected back to the light source; collimating the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element 2 by the collimating ball lens 16; transmitting an optical signal of 1490nm wavelength from the first distributed feedback laser transistor element 2 through the first 45 ° filter 9; the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element 2 is transmitted through the 45 deg. splitting prism 8.
In particular, the second light emitting assembly may refer to a second set of TOSAs configured to emit light signals at a 1490nm wavelength. The first distributed feedback laser transistor element 2 (i.e. the distributed feedback laser transistor profile) may refer TO 2.5g 1490dbf TO-KAN, the first distributed feedback laser transistor element 2 may be configured TO emit an optical signal of 1490nm wavelength, and the third 45 ° filter 11 is configured TO reflect an optical signal of 1490nm wavelength from 2.5g 1490dbf TO-KAN. The second 45 deg. filter 10 may be configured TO transmit 1490nm optical signals from 2.5g 1490dbf TO-KAN. Isolator 15 can transmit the 1490nm optical signal from 2.5g 1490dbf TO-KAN without allowing light TO reflect back TO the light source. The collimator ball lens 16 may be configured TO collimate the 1490nm wavelength optical signal from the 2.5g 1490dbf TO-KAN. The first 45 deg. filter 9 may be configured TO transmit 1490nm optical signals from 2.5g 1490dbf TO-KAN. The 45 ° splitting prism 8 may be configured TO transmit 1490nm optical signals from 2.5g 1490DBF TO-KAN. In addition, a fiber collimator 7 of a collimating accept model can be used for converging the collimated optical signals to the optical fibers.
For the third light emitting assembly:
the third light emitting assembly is configured to emit an optical signal having a wavelength of 1430 nm. The third light emitting component comprises a second distributed feedback laser transistor element 3, the second distributed feedback laser transistor element 3 being configured to emit an optical signal having a wavelength of 1430 nm; wherein an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element 3 is reflected by the second 45 ° filter 10; collimating the optical signal with the wavelength of 1490nm from the electroabsorption modulation laser transistor element 1 by the collimating ball lens 16; transmitting a 1430nm wavelength optical signal from the second distributed feedback laser transistor element 3 through the isolator 15 and preventing the 1430nm wavelength optical signal from being reflected back to the light source; transmitting an optical signal of 1430nm wavelength from the second distributed feedback laser transistor element 3 through the first 45 ° filter 9; the optical signal with a wavelength of 1430nm from the second distributed feedback laser transistor element 3 is transmitted through the 45 ° dichroic prism 8. The Combo Plus OLT optical device further includes: and the optical fiber collimator 7 is used for collimating the optical signals and converging the collimated optical signals to the optical fibers.
In particular, the third light emitting assembly may refer to a third set of forward TOSAs, the third light emitting assembly configured to emit light signals at a wavelength of 1430 nm. The second distributed feedback laser transistor element 3 (i.e. the distributed feedback laser crystal profile) may refer TO 25g 1430dbf TO-KAN, the second distributed feedback laser transistor element 3 being configured TO emit an optical signal of 1430nm wavelength, and the second 45 ° filter 10 may be configured TO reflect an optical signal of 1430nm wavelength from the 25g 1430dbf TO-KAN. The collimating ball lens 16 may be configured TO collimate 1430nm wavelength optical signals from the 25G 1430DFB TO-KAN. Isolator 15 can transmit 1430nm light signals from 25g 1430dfb TO-KAN and not allow light TO be reflected back TO the light source. The first 45 filter 9 may be configured TO transmit 1430nm optical signals from 25G 1430DFB TO-KAN. The 45 ° dichroic prism 8 may be configured TO transmit 1430nm optical signals from 25g 1430dfb TO-KAN. In addition, the collimated optical signal can be converged to an optical fiber by a fiber collimator 7 of a type of collimated acceptance. Thus, in the first light emitting assembly, the second light emitting assembly and the third light emitting assembly described above, two groups are an optical signal of 1577nm wavelength and an optical signal of 1490nm wavelength of the combo device, and the 5G front pass employs an optical signal of 25G 1430nm wavelength. Therefore, the PON ROSA can use a built-in combined wave-splitting scheme, the overall size can be shortened by 2mm, and the SFP+ structure is compatible, so that three groups of transceiving functions of GPON, XGSPON and 25G BIDI are realized.
In actual operation, 2 photodetectors (1270 nm wavelength optical signal and 1310nm wavelength optical signal) for receiving different optical signals can be arranged in one passive optical network receiving component, and can realize light splitting in T0, and the whole optical path of optical signal transmission in the optical transceiver component is shortened through the built-in lens, so that the structure is more miniaturized, or light splitting is carried out in BSAE by using a 45-degree light splitting prism 8, and the silicon lens is fixed in an inner cavity of the BSAE, so that coupling tolerance is large, and structure packaging is facilitated. The whole optical link uses parallel light, so that the optical path loss can be reduced, the coupling efficiency is increased, the lens module is an array Si-clens+Receptacle with Clens convergent structure, both structures can adopt flat window packaging, and the optical link can be different only by splitting light in TO, and can be determined according TO actual effects. The 25G BIDI can be a DFB of TO38 with 1430nm of E wave band, and is composed of external non-spherical caps, the light path structure is converged and parallel TO greatly increase coupling tolerance, reduce welding variation rate and facilitate structure packaging, and the light path structure adopts a lens group containing converging Alens+collimation Clens+Receptacle belt Clens converging module structure. The detector can adopt an APD with 25G rate, and because of the optical signal of 1370 belonging to E wave band, the dispersion coefficient is large, the loss is large, the distance for transmission can be further increased by adopting ADP, meanwhile, the pipe cap of the water drop ball is adopted, and the middle light path is parallel, so that the height of the product can be greatly reduced, and the cost is reduced. It is worth noting that the 0-degree filter is externally arranged but not internally arranged, so that the bandwidth of the 25G TIA is limited, the electric noise is filtered to be limited, the degradation SEN is caused, the filter is externally arranged, the cavity metal has the effect of filtering electromagnetic waves, the optical path lens is converged by adopting a water drop ball lens+a receptile belt Clens, and due to the fact that the aberration of the water drop ball is larger, less light can return to an original path, and the final return loss can be better. The optical signals with 1490nm wavelength and 1577nm wavelength can respectively adopt downlink, the downlink is adopted to be the DFB with 2.5G bit rate and the 10G bit rate EML, the EML can use SOA according to different power consumption, the optical path lens of the optical signals with 1490nm wavelength adopts a converging large sphere+collimating sphere lens 16+receiving pitch band Clens converging module structure, the manufacturing cost can be greatly reduced, and the optical signals with 1577nm wavelength adopt a converging Alens+collimating sphere lens 16+receiving pitch band Clens converging module structure. Thus, the light signal with 1430nm wavelength, the light signal with 1490nm wavelength and the light signal with 1577nm wavelength are emitted to share the isolator 15 and the collimating ball lens 16, so that the product cost can be greatly reduced, and the structure of focusing Alens+collimating ball lens 16+focusing Clens can be adopted to increase the product coupling tolerance and reduce the product sensitivity, so that the precision required by the welding process equipment is lower than that of a full parallel light mode. The method can fully utilize the existing FTTx infrastructure resources, allow the fixed network and the mobile network to share the infrastructure resources, provide stable and reliable FTTx and 5G dual-gigabit access for end users, support the forward of the FTTx and the 5G on the same optical fiber, effectively reduce the 5G deployment cost and shorten the time to market.
The invention provides a Combo Plus OLT optical device, which is configured to receive 1270nm wavelength optical signals and 1310nm wavelength optical signals respectively through a passive optical network receiving component, a front transmission receiving component is configured to receive 1370nm wavelength optical signals, a first optical transmitting component is configured to transmit 1577nm wavelength optical signals, a second optical transmitting component is configured to transmit 1490nm wavelength optical signals, and a third optical transmitting component is configured to transmit 1430nm wavelength optical signals. Thus, the structured optical signal can realize that the existing FTTx infrastructure resource is utilized, so that the fixed network and the mobile network share the infrastructure resource, and simultaneously realize that the FTTx and 5G forward transmission are supported on the same optical fiber, thereby effectively reducing the 5G deployment cost and shortening the time to market. Therefore, the technical effect that the existing FTTx infrastructure resources can be utilized, the fixed network and the mobile network can share the infrastructure resources, and the 5G deployment cost can be effectively reduced is achieved.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (5)
1. A Combo Plus OLT optic, the Combo Plus OLT optic comprising:
a passive optical network receiving component configured to receive an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively;
a forward-receiving component configured to receive an optical signal having a wavelength of 1370 nm;
a first light emitting assembly configured to emit an optical signal having a wavelength of 1577 nm;
a second light emitting assembly configured to emit an optical signal having a wavelength of 1490 nm;
a third light emitting assembly configured to emit an optical signal having a wavelength of 1430 nm;
the passive optical network receiving component comprises:
a second avalanche photodiode transistor element for receiving an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, respectively;
a fourth 0 ° filter configured to receive the optical signal having the wavelength of 1270 nm;
a fifth 0 ° filter configured to receive the optical signal having the wavelength of 1310 nm;
the passive optical network receiving component further comprises:
an array Si-clens model lens and a 45 ° splitting prism, the array Si-clens model lens configured to receive the optical signal at 1270nm wavelength and the optical signal at 1310nm wavelength from the 45 ° splitting prism; the 45 DEG splitting prism is configured to split an optical signal having a wavelength of 1270nm and an optical signal having a wavelength of 1310nm, which are arranged to the array Si-clens type lens, and transmit the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1577 nm;
the forward receiving component comprises:
a first avalanche photodiode transistor element for receiving an optical signal having a wavelength of 1370 nm;
a sixth 0 ° filter configured to transmit the optical signal having the wavelength of 1370 nm;
a first 45 ° filter configured to transmit the optical signal having a wavelength of 1577nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1430nm, and to reflect the optical signal having a wavelength of 1370 nm; wherein the 45 ° beam splitting prism reflects the optical signal having a wavelength of 1270nm and the optical signal having a wavelength of 1310nm, and transmits the optical signal having a wavelength of 1370nm, the optical signal having a wavelength of 1430nm, the optical signal having a wavelength of 1490nm, and the optical signal having a wavelength of 1577 nm.
2. The Combo Plus OLT optical device of claim 1, wherein the first optical emission component comprises:
an electroabsorption modulated laser transistor element for emitting an optical signal having a wavelength of 1577 nm;
a third 45 ° filter configured to transmit an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element;
a second 45 ° filter configured to transmit an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element;
an isolator that transmits an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element and that does not reflect the optical signal having a wavelength of 1577nm back to the light source;
a collimating ball lens configured to collimate an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element; wherein an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element is transmitted through the first 45 ° filter; the optical signal with the wavelength of 1577nm from the electroabsorption modulated laser transistor element is transmitted through the 45 ° splitting prism.
3. The Combo Plus OLT optical device of claim 2, wherein the second optical emission component comprises:
a first distributed feedback laser transistor element for emitting an optical signal having a wavelength of 1490 nm; wherein the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element is split by the third 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the second 45 ° filter; transmitting a 1490nm wavelength optical signal from the first distributed feedback laser transistor element through the isolator and causing the 1490nm wavelength optical signal not to be reflected back to the light source; collimating light spots on the optical signals with the wavelength of 1490nm from the first distributed feedback laser transistor element through the collimating ball lens; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the first 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the 45 ° splitting prism.
4. A Combo Plus OLT optical device according to claim 3, wherein the third optical emission component comprises:
a second distributed feedback laser transistor element for emitting an optical signal having a wavelength of 1430 nm; wherein an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element is reflected by the second 45 ° filter; collimating an optical signal with the wavelength of 1490nm from the electroabsorption modulated laser transistor element by the collimating ball lens; transmitting a 1430nm wavelength optical signal from the second distributed feedback laser transistor element through the isolator and preventing the 1430nm wavelength optical signal from being reflected back to the light source; transmitting an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element through the first 45 ° filter; the optical signal with the wavelength of 1430nm from the second distributed feedback laser transistor element is transmitted through the 45 ° splitting prism.
5. The Combo Plus OLT optic of claim 4, further comprising:
and the optical fiber collimator is used for converging the collimated optical signals to the optical fibers.
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| CN117631153B (en) * | 2024-01-26 | 2024-04-09 | 四川九州光电子技术有限公司 | CPON device and CPON device assembly method |
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| CN209296990U (en) * | 2018-12-21 | 2019-08-23 | 绍兴中科通信设备有限公司 | A kind of three light receiving device parts of hair of single fiber three |
| WO2021004387A1 (en) * | 2019-07-05 | 2021-01-14 | 华为技术有限公司 | Tosa, bosa, optical module, and optical network device |
| CN112285846A (en) * | 2019-07-22 | 2021-01-29 | 青岛海信宽带多媒体技术有限公司 | Optical transceiving submodule and optical module |
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| CN201812067U (en) * | 2010-08-26 | 2011-04-27 | 深圳新飞通光电子技术有限公司 | Single optical fiber bidirectional light receiving-transmitting assembly for OLT (optical line terminal) |
| CN201854283U (en) * | 2010-11-23 | 2011-06-01 | 深圳新飞通光电子技术有限公司 | Optical line terminal (OLT) single-fiber two-way transmission optical transceiver module |
| CN104518831A (en) * | 2013-09-30 | 2015-04-15 | 中兴通讯股份有限公司 | Optical component and method supporting coexistence of two passive optical networks |
| CN108254839A (en) * | 2018-03-16 | 2018-07-06 | 青岛海信宽带多媒体技术有限公司 | Optical assembly |
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| CN209296990U (en) * | 2018-12-21 | 2019-08-23 | 绍兴中科通信设备有限公司 | A kind of three light receiving device parts of hair of single fiber three |
| WO2021004387A1 (en) * | 2019-07-05 | 2021-01-14 | 华为技术有限公司 | Tosa, bosa, optical module, and optical network device |
| CN112285846A (en) * | 2019-07-22 | 2021-01-29 | 青岛海信宽带多媒体技术有限公司 | Optical transceiving submodule and optical module |
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