CN113917628A - Combo Plus OLT optical device - Google Patents
Combo Plus OLT optical device Download PDFInfo
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- CN113917628A CN113917628A CN202111081698.0A CN202111081698A CN113917628A CN 113917628 A CN113917628 A CN 113917628A CN 202111081698 A CN202111081698 A CN 202111081698A CN 113917628 A CN113917628 A CN 113917628A
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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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- 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 component, a fronthaul receiving component, a first optical transmission component, a second optical transmission component and a third optical transmission component, wherein the passive optical network receiving component is configured to respectively receive an optical signal with the wavelength of 1270nm and an optical signal with the wavelength of 1310 nm; the fronthaul receive component is configured to receive an optical signal having a wavelength of 1370 nm; the first light emitting component is configured to emit an optical signal having a wavelength of 1577 nm; the second optical transmission component is configured to transmit an optical signal with 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 can utilize the existing FTTx infrastructure resources, so that the fixed and mobile networks can share the infrastructure resources, and the technical effect of effectively reducing the 5G deployment cost can be achieved.
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, sharing the infrastructure of FTTx networks is a consensus to achieve cost-effective 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 building resources, and finally provide stable FTTx and 5G gigabit access for users, and it is also impossible to effectively reduce the 5G deployment cost and shorten the time to market.
In summary, in the existing optical communication technology, it is difficult to utilize the existing FTTx infrastructure resources to enable the fixed and mobile networks to share the infrastructure resources, and it is difficult to effectively reduce the 5G deployment cost.
Disclosure of Invention
The technical problem to be solved by the present invention is that it is difficult to utilize the existing FTTx infrastructure resources to make the fixed and mobile networks share the infrastructure resources, and at the same time it is difficult to effectively reduce the 5G deployment cost.
In order to solve the above technical problem, the present invention provides a Combo Plus OLT optical device, including: a passive optical network receiving component configured to receive optical signals having a wavelength of 1270nm and 1310nm, respectively; a fronthaul receive component configured to receive an optical signal having a wavelength of 1370 nm; a first light emitting component configured to emit an optical signal having a wavelength of 1577 nm; a second light emitting component configured to emit an optical signal having a wavelength of 1490 nm; a third light emitting assembly configured to emit a light signal having a wavelength of 1430 nm.
Further, the passive optical network receiving component includes: a second avalanche photodiode transistor element for receiving optical signals having a wavelength of 1270nm and 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 ° beam splitter prism, the array Si-clens model lens configured to receive the 1270nm wavelength optical signal and the 1310nm wavelength optical signal from the 45 ° beam splitter prism; the 45-degree beam splitter prism is configured to split an optical signal with a wavelength of 1270nm and an optical signal with a wavelength of 1310nm of the array Si-clens type lens, and transmit the optical signal with the wavelength of 1370nm, the optical signal with the wavelength of 1430nm, the optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577 nm.
Further, the forwarding 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 a wavelength of 1370 nm; a first 45 ° filter configured to transmit the optical signal having the wavelength of 1577nm, the optical signal having the wavelength of 1490nm and the optical signal having the wavelength of 1430nm and to reflect the optical signal having the wavelength of 1370 nm; the 45-degree beam splitter prism is used for reflecting the optical signal with the wavelength of 1270nm and the optical signal with the wavelength of 1310nm, and transmitting the optical signal with the wavelength of 1370nm, the optical signal with the wavelength of 1430nm, the optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577 nm.
Further, the first light emitting assembly includes: an electro-absorption modulated laser transistor element for emitting an optical signal having a wavelength of 1577 nm; a third 45 ° filter configured to transmit optical signals from the electroabsorption modulated laser transistor element having a wavelength of 1577 nm; a second 45 ° filter configured to transmit optical signals from the electroabsorption modulated laser transistor element having a wavelength of 1577 nm; an isolator that transmits an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element and does not reflect the optical signal having the wavelength of 1577nm back to a light source; a collimating ball lens configured to collimate a light spot of 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; transmitting an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element through the 45 ° beam 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 an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element is split by the third 45 ° filter; transmitting an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element through the second 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the isolator and not reflecting the optical signal having the wavelength of 1490nm back to a light source; collimating the light spot of the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element through the collimating ball lens; transmitting a 1490nm optical signal from the first distributed feedback laser transistor element through the first 45 ° filter; and transmitting the optical signal with the wavelength of 1490nm from the transistor element of the first distributed feedback laser through the 45-degree beam splitter 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 a wavelength of 1490nm from the transistor element of the electro-absorption modulated laser by the collimating ball lens; transmitting a 1430nm wavelength optical signal from the second distributed feedback laser transistor element through the isolator and not reflecting the 1430nm wavelength optical signal back to a light source; transmitting an optical signal with a wavelength of 1430nm from the second distributed feedback laser transistor element through the first 45 ° filter pair; and transmitting the optical signal with the wavelength of 1430nm from the transistor element of the second distributed feedback laser through the 45-degree beam splitter prism.
Further, the Combo Plus OLT optical device further includes: the collimating Receptacle type optical fiber collimator is used for converging collimated light signals to an optical fiber.
Has the advantages that:
the invention provides a Combo Plus OLT optical device, which is configured to receive an optical signal with a wavelength of 1270nm and an optical signal with a wavelength of 1310nm through a passive optical network receiving component, a fronthaul receiving component is configured to receive an optical signal with a wavelength of 1370nm, a first optical transmitting component is configured to transmit an optical signal with a wavelength of 1577nm, a second optical transmitting component is configured to transmit an optical signal with a wavelength of 1490nm, and a third optical transmitting component is configured to transmit an optical signal with a wavelength of 1430 nm. Therefore, the optical signal with the structure can utilize the existing FTTx infrastructure resources, so that the fixed and mobile networks share the infrastructure resources, and simultaneously, FTTx and 5G forward transmission on the same optical fiber is supported, thereby effectively reducing the deployment cost of 5G and shortening the time to market. Therefore, the technical effects that the existing FTTx infrastructure resources can be utilized, the fixed and mobile networks can share the infrastructure resources, and meanwhile, the 5G deployment cost can be effectively reduced are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
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 first optical path schematic diagram of a Combo Plus OLT optical device according to an embodiment of the present invention;
FIG. 3 is a second optical path diagram of a Combo Plus OLT optical device according to an embodiment of the present invention;
FIG. 4 is a third schematic optical path diagram of a Combo Plus OLT optical device according to an embodiment of the present invention;
FIG. 5 is a fourth optical path schematic diagram of a Combo Plus OLT optical device according to an embodiment of the present invention;
fig. 6 is a fifth optical path schematic diagram 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 a wavelength of 1270nm and an optical signal with a wavelength of 1310nm through a passive optical network receiving component, a fronthaul receiving component is configured to receive the optical signal with the wavelength of 1370nm, a first optical transmitting component is configured to transmit the optical signal with the wavelength of 1577nm, a second optical transmitting component is configured to transmit the optical signal with the wavelength of 1490nm, and a third optical transmitting component is configured to transmit the optical signal with the wavelength of 1430 nm. Therefore, the optical signal with the structure can utilize the existing FTTx infrastructure resources, so that the fixed and mobile networks share the infrastructure resources, and simultaneously, FTTx and 5G forward transmission on the same optical fiber is supported, thereby effectively reducing the deployment cost of 5G and shortening the time to market. Therefore, the technical effects that the existing FTTx infrastructure resources can be utilized, the fixed and mobile networks can share the infrastructure resources, and meanwhile, the 5G deployment cost can be effectively reduced are achieved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, which represents: only A does not include B; only B does not include A; including 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 describing one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms are 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 "lower" would then be oriented "upper" other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Also, in embodiments of the invention where an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the embodiments of the present invention are 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 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 an optical path of a Combo Plus OLT optical device according to an embodiment of the present invention, fig. 4 is a schematic diagram 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, and 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. The Combo Plus OLT optical device provided by the embodiment of the present invention includes a passive optical network receiving component, a fronthaul receiving component, a first optical transmitting component, a second optical transmitting component and a third optical transmitting component, and now the passive optical network receiving component, the fronthaul receiving component, the first optical transmitting component, the second optical transmitting component and the third optical transmitting component are respectively explained in detail:
for a passive optical network receiving component:
the passive optical network receiving component is configured to receive optical signals having a wavelength of 1270nm and 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 ° beam splitter prism 8, said second avalanche photodiode transistor element 5 for receiving optical signals having a wavelength of 1270nm and optical signals having a wavelength of 1310nm, respectively, said fourth 0 ° filter 12 configured to receive said optical signals having a wavelength of 1270nm, said fifth 0 ° filter 13 configured to receive said optical signals having a wavelength of 1310nm, said array Si-clens model lens 6 configured to receive said optical signals having a wavelength of 1270nm from 45 ° beam splitter prism 8, and said optical signals having a wavelength of 1310 nm; the 45 ° beam splitter prism 8 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 6, 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.
In particular, the passive optical network receiving component may be referred to as a PON ROSA, and is configured to receive an optical signal at a 1270nm wavelength and an optical signal at a 1310nm wavelength, respectively. The second avalanche photodiode transistor element 5 (i.e., avalanche photodiode transistor element profile) may be referred TO as a two-chip APD TO-KAN, the second avalanche photodiode transistor element 5 being configured TO receive an optical signal at a wavelength of 1270nm and an optical signal at a wavelength of 1310nm, respectively. The fourth 0 ° filter 12 is configured to receive the optical signal of 1270nm wavelength and to isolate the remaining optical signals by the fourth 0 ° filter 12. The fifth 0 ° filter 13 is configured to receive an optical signal of 1310nm wavelength and isolate the remaining optical signal by the fifth 0 ° filter 13. The array Si-clens model lens 6 is configured to receive the 1270nm wavelength optical signal from the 45 ° beam splitter prism 8 and to receive the 1310nm wavelength optical signal. The 45 ° beam splitter prism 8 is configured to split an optical signal of 1270nm wavelength and an optical signal of 1310nm wavelength to the array Si-clens model lens 6, while transmitting the optical signals of 1370nm, 1430nm, 1490nm and 1577nm through the 45 ° beam splitter prism 8.
For the forward-to-receive component:
the fronthaul receive assembly is configured to receive an optical signal having a wavelength of 1370 nm. The fronthaul receiving assembly may include a first avalanche photodiode transistor element 4, a sixth 0 ° filter 14 and a first 45 ° filter 9, the first avalanche photodiode transistor element 4 is configured to receive an optical signal having a wavelength of 1370nm, the sixth 0 ° filter 14 is configured to transmit the optical signal having the wavelength of 1370nm, the first 45 ° filter 9 is configured to transmit the optical signal having the wavelength of 1577nm, the optical signal having the wavelength of 1490nm and the optical signal having the wavelength of 1430nm and to reflect the optical signal having the wavelength of 1370nm, wherein the optical signal having the wavelength of 1270nm and the optical signal having the wavelength of 1310nm are reflected by the 45 ° beam splitter prism 8 and the optical signal having the wavelength of 1370nm, the optical signal having the wavelength of 1430nm, and the first 45 ° filter 9, The optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577nm are transmitted.
In particular, the fronthaul receiver component may be referred to as a fronthaul ROSA, the fronthaul receiver component configured to receive optical signals at 1370nm wavelength. The first avalanche photodiode transistor element 4 (i.e. the avalanche photodiode transistor element profile) is arranged to receive an optical signal at a wavelength of 1370 nm. The sixth 0 ° filter 14 is configured to transmit an optical signal of a wavelength of 1370nm, and the remaining optical signals are isolated by the sixth 0 ° filter 14. The first 45 ° filter 9 is configured to transmit optical signals having wavelengths of 1577nm, 1490nm and 1430nm and to cause an optical signal of 1370nm to be reflected. The 45 ° beam splitter prism 8 may be configured to reflect optical signals at 1270nm and 1310nm and transmit optical signals at 1370nm, 1430nm, 1490nm and 1577 nm. The optical signals of different signals can be collimated by a fiber collimator 7 of a collimating Receptacle type. Thus, two sets of ROSA are adopted, one set of PON ROSA corresponds to two sets of optical signals with different wavelengths, an external wave division scheme is adopted, coupling tolerance is larger due to the addition of the silicon lens, coupling efficiency is higher, and product requirements can be met even though the silicon lens is of a temperature sensitive type. And because the dispersion and the loss of the optical signal with the wavelength of 1370nm are larger, the optical signal needs to be transmitted for a longer distance, the other group of front-end ROSAs adopts an APD scheme with the wavelength of 25G 1370nm, and the electric crosstalk can be better filtered due to the external arrangement of a 0-degree filter.
For the first light emitting assembly:
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 collimating ball lens 16, the electro-absorption modulated laser transistor element 1 is used for emitting optical signals with the wavelength of 1577nm, the third 45 ° filter 11 is configured to transmit optical signals with the wavelength of 1577nm from the electro-absorption modulated laser transistor element 1, the second 45 ° filter 10 is configured to transmit optical signals with the wavelength of 1577nm from the electro-absorption modulated laser transistor element 1, the isolator 15 transmits optical signals with the wavelength of 1577nm from the electro-absorption modulated laser transistor element 1 and prevents the optical signals with the wavelength of 1577nm from being reflected back to the light source; the collimating ball lens 16 is configured to collimate the optical signal with a wavelength of 1577nm from the electro-absorption modulated laser transistor element 1, wherein the optical signal with a wavelength of 1577nm from the electro-absorption modulated laser transistor element 1 is transmitted through the first 45 ° filter 9; an optical signal with a wavelength of 1577nm from the electroabsorption modulated laser transistor element 1 is transmitted through the 45 ° beam splitter prism 8.
In particular, the first light emitting assembly may refer to a first set of TOSAs, the first light emitting assembly configured to emit an optical signal at a wavelength of 1577 nm. The electro-absorption modulated laser transistor element 1, i.e. the electro-absorption modulated laser transistor profile, may be referred to as 10G 1577EMLTO-KAN, through which electro-absorption modulated laser transistor element 1 an optical signal of 1577nm wavelength is emitted, and the third 45 ° optical filter 11 may be configured to transmit the 1577nm optical signal from the 10G 1577 EMLTO-KAN. The second 45 filter 10 may be configured to transmit 1577nm optical signals from 10G 1577 EMLTO-KAN. Isolator 15 can transmit 1577nm optical signals from 10G 1577EML TO-KAN without allowing light TO reflect back TO the light source. The collimating ball lens 16 may be configured to collimate the light spot of an optical signal from 10G 1577EMLTO-KAN at a wavelength of 1577 nm. The first 45 ° filter 9 may be configured to transmit 1577nm optical signals from 10G 1577 EMLTO-KAN. The 45 ° beam splitter prism 8 may be configured to transmit 1577nm optical signals from 10G 1577 EMLTO-KAN. The collimated light signal can be converged to the optical fiber by a fiber collimator 7 of collimated Receptacle type.
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 element includes a first distributed feedback laser transistor element 2, the first distributed feedback laser transistor element 2 is configured to emit an optical signal with a wavelength of 1490nm, wherein the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element 2 is split by the third 45 ° optical filter 11; transmitting an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element 2 through the second 45 ° filter 10; transmitting an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element 2 through the isolator 15 and not reflecting the optical signal with the wavelength of 1490nm back to a light source; the collimation ball lens 16 is used for collimating the light spot of the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element 2; transmitting a 1490nm optical signal from the first distributed feedback laser transistor element 2 through the first 45 ° filter 9; the 45 ° beam splitter prism 8 transmits an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element 2.
In particular, the second light emitting package may refer to a second set of TOSAs, the second light emitting package configured to emit an optical signal of 1490nm wavelength. The first distributed feedback laser transistor element 2 (i.e. the distributed feedback laser transistor profile) may be referred TO as 2.5G 1490DBF TO-KAN, the first distributed feedback laser transistor element 2 may be for emitting an optical signal at 1490nm wavelength, and the third 45 ° filter 11 is configured TO reflect an optical signal at 1490nm wavelength from the 2.5G 1490DBF TO-KAN. The second 45 filter 10 may be configured TO transmit 1490nm optical signals from a 2.5G 1490DBF TO KAN. Isolator 15 can transmit 1490nm optical signals from 2.5G 1490DBF TO-KAN without allowing light TO reflect back TO the light source. The collimating ball lens 16 can be configured TO collimate the spot of 1490nm wavelength optical signals from a 2.5G 1490DBF TO-KAN. The first 45 ° filter 9 may be configured TO transmit 1490nm optical signals from a 2.5G 1490DBF TO KAN. The 45 ° beam splitter prism 8 may be configured TO transmit 1490nm optical signals from a 2.5G 1490DBF TO KAN. In addition, a fiber collimator 7 of a collimating Receptacle type can be used for converging the collimated light signal to the optical fiber.
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, and the second distributed feedback laser transistor element 3 is used for emitting an optical signal with the wavelength of 1430 nm; wherein, the optical signal with wavelength of 1430nm from the second distributed feedback laser transistor element 3 is reflected by the second 45 ° filter 10; collimating an optical signal of 1490nm wavelength from the electro-absorption modulated 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 not reflecting the 1430nm wavelength optical signal back to the light source; transmitting an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element 3 through the first 45 ° filter 9; the 45 ° beam splitter prism 8 transmits an optical signal having a wavelength of 1430nm from the second distributed feedback laser transistor element 3. The Combo Plus OLT optical device further comprises: a collimating Receptacle model fiber collimator 7, the collimating Receptacle model fiber collimator 7 being configured to converge a collimated light signal to an optical fiber.
In particular, the third light emitting assembly may be referred to as a third set of fronthaul TOSAs, the third light emitting assembly configured to emit an optical signal at a wavelength of 1430 nm. The second distributed feedback laser transistor element 3 (i.e. the distributed feedback laser crystal profile) may be referred TO as 25G 1430DBF TO-KAN, the second distributed feedback laser transistor element 3 being for emitting an optical signal at a wavelength of 1430nm, the second 45 ° filter 10 may be configured TO reflect an optical signal at a wavelength of 1430nm from the 25G 1430DBF TO-KAN. The collimating ball lens 16 can be configured TO collimate 1430nm wavelength optical signals from a 25G 1430DFB TO-KAN. Isolator 15 can transmit 1430nm optical signals from 25G 1430DFB TO-KAN and does not allow light TO reflect back TO the source. The first 45 ° filter 9 may be configured TO transmit 1430nm optical signals from a 25G 1430DFB TO-KAN. The 45 ° beam splitter prism 8 can be configured TO transmit 1430nm optical signals from a 25G 1430DFB TO-KAN. In addition, the collimated light signal can also be converged to the optical fiber by collimating a Receptacle model optical fiber collimator 7. Thus, in the first, second and third light emitting modules, two sets are 1577nm wavelength optical signals and 1490nm wavelength optical signals of combo devices, while 5G fronthaul uses 25G 1430nm wavelength optical signals. Therefore, the PON ROSA can use a scheme of built-in combination and division waves, the whole size can be shortened by 2mm, and the PON ROSA is compatible with an SFP + structure, so that three groups of transceiving functions of GPON, XGSPON and 25G BIDI are realized.
In actual operation, 2 optical detectors (an optical signal with a wavelength of 1270nm and an optical signal with a wavelength of 1310 nm) for receiving different optical signals can be arranged in one passive optical network receiving assembly, light splitting in T0 can be realized, the whole optical path of optical signal transmission in the optical transceiving assembly is shortened through a built-in lens, the structure is more miniaturized, or light splitting is carried out by using a 45-degree light splitting prism 8 in BSAE, a silicon lens is fixed in the inner cavity of the BSAE, the coupling tolerance can be large, and the structure packaging is convenient. 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 band Clens convergence structure, the two structures can be packaged by adopting a flat window, and the two structures are different only in TO or not and can be determined according TO actual effects. The 25G BIDI can be a DFB of a TO38 with a wavelength of 1430nm of an E wave band, an external non-spherical tube cap is adopted for forming the DFB, a light path structure adopts convergence and parallel TO greatly increase coupling tolerance, welding variability is reduced, structure encapsulation is facilitated, and the light path structure adopts a lens group containing an Alens + collimating Clens + Receptacle band Clens convergence module structure. The detector can adopt APD with the speed of 25G, because the selected 1370 belongs to the optical signal of E wave band, the dispersion coefficient is large, the loss is large, the farther distance of transmission can be realized by adopting ADP, and simultaneously, the height of the product can be greatly reduced and the cost can be greatly reduced by adopting a pipe cap of a water drop ball and parallel light of a middle light path. It is worth noting that the 0-degree filter is externally arranged but not internally arranged, so that the filter is limited in bandwidth due to 25G TIA and limited in electrical noise filtering, and degradation SEN is caused. The 1490nm optical signal and 1577nm optical signal can respectively adopt downlink, DFB and 10G bit rate EML with 2.5G bit rate are adopted, the EML can use SOA according to different power consumption, the light path lens of the 1490nm optical signal adopts a converging module structure comprising a converging large ball, a collimating ball lens 16 and a Receptacle band Clens, so that the manufacturing cost can be greatly reduced, and the 1577nm optical signal adopts a converging module structure comprising a converging Alens, a collimating ball lens 16 and a Receptacle band Clens. Therefore, the optical signal with the wavelength of 1430nm, the optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577nm are transmitted to share the isolator 15 and the collimating ball lens 16, so that the product cost can be greatly reduced, the product coupling tolerance can be increased by adopting the structure of focusing Alens, the collimating ball lens 16 and focusing Clens, the product sensitivity is reduced, and the precision required by welding process equipment is lower than that of a full parallel light mode. And then, the existing FTTx infrastructure resources can be fully utilized, the fixed and mobile networks are allowed to share the infrastructure resources, stable and reliable FTTx and 5G dual-gigabit access is provided for an end user, FTTx and 5G forwarding on the same optical fiber can be supported, the 5G deployment cost is effectively reduced, and the time to market is shortened.
The invention provides a Combo Plus OLT optical device, which is configured to receive an optical signal with a wavelength of 1270nm and an optical signal with a wavelength of 1310nm through a passive optical network receiving component, a fronthaul receiving component is configured to receive an optical signal with a wavelength of 1370nm, a first optical transmitting component is configured to transmit an optical signal with a wavelength of 1577nm, a second optical transmitting component is configured to transmit an optical signal with a wavelength of 1490nm, and a third optical transmitting component is configured to transmit an optical signal with a wavelength of 1430 nm. Therefore, the optical signal with the structure can utilize the existing FTTx infrastructure resources, so that the fixed and mobile networks share the infrastructure resources, and simultaneously, FTTx and 5G forward transmission on the same optical fiber is supported, thereby effectively reducing the deployment cost of 5G and shortening the time to market. Therefore, the technical effects that the existing FTTx infrastructure resources can be utilized, the fixed and mobile networks can share the infrastructure resources, and meanwhile, the 5G deployment cost can be effectively reduced are achieved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. A Combo Plus OLT optical device, comprising:
a passive optical network receiving component configured to receive optical signals having a wavelength of 1270nm and 1310nm, respectively;
a fronthaul receive component configured to receive an optical signal having a wavelength of 1370 nm;
a first light emitting component configured to emit an optical signal having a wavelength of 1577 nm;
a second light emitting component configured to emit an optical signal having a wavelength of 1490 nm;
a third light emitting assembly configured to emit a light signal having a wavelength of 1430 nm.
2. The Combo Plus OLT optical device of claim 1, wherein the passive optical network receiving component comprises:
a second avalanche photodiode transistor element for receiving optical signals having a wavelength of 1270nm and 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.
3. The Combo Plus OLT optical device of claim 2, wherein the passive optical network receiving component further comprises:
an array Si-clens model lens and a 45 ° beam splitter prism, the array Si-clens model lens configured to receive the 1270nm wavelength optical signal and the 1310nm wavelength optical signal from the 45 ° beam splitter prism; the 45-degree beam splitter prism is configured to split an optical signal with a wavelength of 1270nm and an optical signal with a wavelength of 1310nm of the array Si-clens type lens, and transmit the optical signal with the wavelength of 1370nm, the optical signal with the wavelength of 1430nm, the optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577 nm.
4. The Combo Plus OLT optical device of claim 3, wherein said fronthaul reception 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 a wavelength of 1370 nm;
a first 45 ° filter configured to transmit the optical signal having the wavelength of 1577nm, the optical signal having the wavelength of 1490nm and the optical signal having the wavelength of 1430nm and to reflect the optical signal having the wavelength of 1370 nm; the 45-degree beam splitter prism is used for reflecting the optical signal with the wavelength of 1270nm and the optical signal with the wavelength of 1310nm, and transmitting the optical signal with the wavelength of 1370nm, the optical signal with the wavelength of 1430nm, the optical signal with the wavelength of 1490nm and the optical signal with the wavelength of 1577 nm.
5. The Combo Plus OLT optical device of claim 4, wherein the first light emitting assembly comprises:
an electro-absorption modulated laser transistor element for emitting an optical signal having a wavelength of 1577 nm;
a third 45 ° filter configured to transmit optical signals from the electroabsorption modulated laser transistor element having a wavelength of 1577 nm;
a second 45 ° filter configured to transmit optical signals from the electroabsorption modulated laser transistor element having a wavelength of 1577 nm;
an isolator that transmits an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element and does not reflect the optical signal having the wavelength of 1577nm back to a light source;
a collimating ball lens configured to collimate a light spot of 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; transmitting an optical signal having a wavelength of 1577nm from the electroabsorption modulated laser transistor element through the 45 ° beam splitting prism.
6. The Combo Plus OLT optical device of claim 5, wherein the second light emitting assembly comprises:
a first distributed feedback laser transistor element for emitting an optical signal having a wavelength of 1490 nm; wherein an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element is split by the third 45 ° filter; transmitting an optical signal with a wavelength of 1490nm from the first distributed feedback laser transistor element through the second 45 ° filter; transmitting an optical signal having a wavelength of 1490nm from the first distributed feedback laser transistor element through the isolator and not reflecting the optical signal having the wavelength of 1490nm back to a light source; collimating the light spot of the optical signal with the wavelength of 1490nm from the first distributed feedback laser transistor element through the collimating ball lens; transmitting a 1490nm optical signal from the first distributed feedback laser transistor element through the first 45 ° filter; and transmitting the optical signal with the wavelength of 1490nm from the transistor element of the first distributed feedback laser through the 45-degree beam splitter prism.
7. The Combo Plus OLT optical device of claim 6, wherein the third light emitting assembly 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 a wavelength of 1490nm from the transistor element of the electro-absorption modulated laser by the collimating ball lens; transmitting a 1430nm wavelength optical signal from the second distributed feedback laser transistor element through the isolator and not reflecting the 1430nm wavelength optical signal back to a light source; transmitting an optical signal with a wavelength of 1430nm from the second distributed feedback laser transistor element through the first 45 ° filter pair; and transmitting the optical signal with the wavelength of 1430nm from the transistor element of the second distributed feedback laser through the 45-degree beam splitter prism.
8. The Combo Plus OLT optical device of claim 7, wherein said Combo Plus OLT optical device further comprises:
the collimating Receptacle type optical fiber collimator is used for converging collimated light signals to an optical fiber.
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