CN117055179B - 50G PON Combo OLT three-mode compatible optical device - Google Patents
50G PON Combo OLT three-mode compatible optical device Download PDFInfo
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- CN117055179B CN117055179B CN202311318953.8A CN202311318953A CN117055179B CN 117055179 B CN117055179 B CN 117055179B CN 202311318953 A CN202311318953 A CN 202311318953A CN 117055179 B CN117055179 B CN 117055179B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 76
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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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
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention relates to a 50G PON Combo OLT three-mode compatible optical device, comprising: the light inlets of the Z-Block I and the Z-Block II which are arranged side by side face the light outlet of the Z-Block I, and the optical filters I at the three light inlets on the Z-Block I face the light outlets of the 50G EML, 2.5G DFB and 10G EML lasers respectively; the optical filter II is arranged at the light inlet of the Z-Block II, the optical filters III at the three reflected light outlets on the Z-Block II respectively face the light inlets of the 10G APD, the 25G APD and the 1.25G APD receivers, and the light outlet of the Z-Block II faces the ferrule. The beneficial effects are as follows: by adopting the special scheme, the optical path is concise, the integration level and the reliability are high, the number of parts is relatively less, the assembly difficulty is reduced, and in addition, the optical crosstalk and the electrical crosstalk are optimized.
Description
Technical Field
The invention relates to the field of optical devices, in particular to a 50G PON Combo OLT three-mode compatible optical device.
Background
With the popularization of the giga broadband scale, the 10G PON enters a large-scale deployment stage, meanwhile, the industry is also laying out the 50G PON, and is in preparation for advancing to the teraage, and compared with the 10G PON, the 50G PON standard can provide more than 5 times of access bandwidth and better service supporting capability (large bandwidth, low time delay and high reliability), and supports smooth evolution from GPON, 10G PON to 50G PON so as to be compatible with the existing ODN network as much as possible.
The three-mode compatible optical device (50G PON+XGS PON+GPON OLT) released by Sichuan optical constant accords with the ITU-T G.9804.3 (2021) protocol standard, the device has reliable product performance, the coaxial miniaturized size package can be suitable for QSFP and SFP modules, the optimized optical path design meets better coupling efficiency index, and the product has the following wavelength: 50G 1342nm EML, 10G 1577nm EML, 2.5G 1490nm DFB, upstream wavelength: 25G1286nm BM APD, 10G 1270nm BM APD and 1.25G 1310nm BM APD, but the device adopts a plurality of discrete optical filters, so the number of the whole parts is excessive, and the number of the optical filters is more than 7, and the assembly is complicated.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a 50G PON Combo OLT three-mode compatible optical device so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: a 50G PON Combo OLT tri-mode compatible optical device comprising: the light inlets of the Z-Block I and the Z-Block II which are arranged side by side face the light outlet of the Z-Block I, and the optical filters I at the three light inlets on the Z-Block I face the light outlets of the 50G EML laser, the 2.5G DFB laser and the 10G EML laser respectively; the optical filter II is arranged at the light inlet of the Z-Block II, the optical filters III at the three reflected light outlets of the Z-Block II respectively face the light inlets of the 10G APD receiver, the 25GAPD receiver and the 1.25G APD receiver, and the light outlet of the Z-Block II faces the ferrule.
The beneficial effects of the invention are as follows: the whole optical device only has 7 optical filters, and the optical filter II can transmit three groups of emitted light and reflect three groups of received light, so that the optical path is concise, the integration level and the reliability are high, the number of parts is relatively smaller, the assembly difficulty is reduced, and in addition, the optical crosstalk and the electric crosstalk are optimized because the light emission and the light reception are respectively positioned at the outer sides of the Z-Block I and the Z-Block II, and the whole optical device supports 2.5G, 10G and 50G GPON.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the wavelength of the 50G EML laser was 1342nm, the wavelength of the 2.5G DFB laser was 1490nm, and the wavelength of the 10G EML laser was 1577nm.
Still further, the wavelength of the 10G APD receiver is 1270nm, the wavelength of the 25G APD receiver is 1286nm, and the wavelength of the 1.25G APD receiver is 1310nm.
Further, lenses were arranged between the 50G EML laser and the filter i, between the 2.5G DFB laser and the filter i, and between the 10G EML laser and the filter i.
Further, an optical isolator is arranged between the lens and the optical filter I.
Further, a collimating lens is arranged between the light outlet of the transmitted light of the Z-Block II and the insert core.
Further, the optical filter I is adhered to the light inlet of the Z-Block I.
The adoption of the method has the further beneficial effects that: the optical filter I is fixed on the Z-Block I in an adhering mode, so that the reliability is high, and the space and the production cost are saved.
Further, the optical filter II is adhered to the light inlet of the Z-Block II.
The adoption of the method has the further beneficial effects that: the optical filter II is fixed on the Z-Block II in an adhering mode, so that the reliability is high, and the space and the production cost are saved.
Further, the optical filter III is adhered to the light outlet of the Z-Block II.
The adoption of the method has the further beneficial effects that: the optical filter III is fixed on the Z-Block II in an adhesive mode, so that the reliability is high, and the space and the production cost are saved.
Drawings
Fig. 1 is a structural diagram of a 50G PON Combo OLT three-mode compatible optical device according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. Z-Block I, 2, Z-Block II, 3, optical filter I, 4, 50G EML laser, 5, 2.5G DFB laser, 6, 10G EML laser, 7, optical filter II, 8, ferrule, 9, optical filter III, 10G APD receiver, 11, 25G APD receiver, 12, 1.25G APD receiver, 13, lens, 14, optical isolator, 15, collimating lens.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1, a 50G PON Combo OLT three-mode compatible optical device comprises:
Z-Block I1, Z-Block II 2, 50G EML laser 4, 2.5G DFB laser 5, 10G EML laser 6, ferrule 8, 10G APD receiver 10, 25G APD receiver 11 and 1.25G APD receiver 12, Z-Block II 2 being disposed on the light-emitting side of Z-Block I1;
the light inlet of the Z-Block II 2 is opposite to the light outlet of the Z-Block I1, three light inlets are formed in the light inlet side of the Z-Block I1, optical filters I3 are distributed at the three light inlets on the Z-Block I1, and the optical filters I3 at the three light inlets on the Z-Block I1 are opposite to the light outlets of the 50G EML laser 4, the 2.5G DFB laser 5 and the 10G EML laser 6 respectively; the light entrance side of the Z-Block II 2 is provided with a light entrance, the light entrance of the Z-Block II 2 is provided with a light filter II 7,Z-Block II 2, the light exit side of the Z-Block II 2 is provided with three reflected light exits, the light filter III 9,Z-Block II 2 is provided with three reflected light exits at the light exit side of the Z-Block II 2, the light filter III 9 at the three reflected light exits respectively face the light entrance of the 10G APD receiver 10, the 25G APD receiver 11 and the 1.25G APD receiver 12, the light exit of the Z-Block II 2 faces the insert 8, in the embodiment, the Z-Block integrated assembly filter is adopted, 7 light filters are integrated on 2Z-blocks, and 2 TFF components (the TFF components are composed of Z-Block+ light filters) are obtained.
The light beam emitted by the 50G EML laser 4 enters the Z-Block I1 from one light inlet of the Z-Block I1 after passing through the optical filter I3, then is transmitted to the light outlet of the Z-Block I1, enters the Z-Block II 2 from the light inlet of the Z-Block II 2 after passing through the optical filter II 7, then is transmitted to the light outlet of the Z-Block II 2, and finally enters the ferrule 8;
the light beam emitted by the 2.5G DFB laser 5 enters the Z-Block I1 from one light inlet of the Z-Block I1 after passing through the optical filter I3, then enters the light outlet of the Z-Block I1 after passing through the reflection of the Z-Block I1 and the reflection of other optical filters I3, enters the Z-Block II 2 from the light inlet of the Z-Block II 2 after passing through the optical filter II 7, then enters the light outlet of the Z-Block II 2, and finally enters the ferrule 8;
the light beam emitted by the 10G EML laser 6 enters the Z-Block I1 from one light inlet of the Z-Block I1 after passing through the optical filter I3, then enters the Z-Block II 2 from the light inlet of the Z-Block II 2 after passing through the reflection of the Z-Block I1 and the reflection of other optical filters I3, and finally enters the ferrule 8.
The light of the ferrule 8 can enter the Z-Block II 2 through the light outlet of the Z-Block II 2, and is reflected at the optical filter II 7, then is transmitted at the optical filter III 9 corresponding to the 10G APD receiver 10, and enters the 10G APD receiver 10 through the optical filter III 9, or is reflected by the optical filter III 9 corresponding to the 10G APD receiver 10 and is transmitted at the optical filter III 9 corresponding to the 25G APD receiver 11 after being reflected by the Z-Block II 2, and enters the 25G APD receiver 11 through the optical filter III 9, or is reflected by the optical filter III 9 corresponding to the 10G APD receiver 10 and the 25G APD receiver 11, and is transmitted at the optical filter III 9 corresponding to the 1.25G APD receiver 12 after being reflected by the Z-Block II 2 for multiple times, and enters the 1.25G APD receiver 12 through the optical filter III 9.
Example 2
As shown in fig. 1, this embodiment is a further improvement of embodiment 1, specifically as follows:
the wavelength of the 50G EML laser 4 was 1342nm, the wavelength of the 2.5G DFB laser 5 was 1490nm, and the wavelength of the 10G EML laser 6 was 1577nm.
Further: the wavelength of the 10G APD receiver 10 is 1270nm, the wavelength of the 25G APD receiver 11 is 1286nm, and the wavelength of the 1.25G APD receiver 12 is 1310nm.
Example 3
As shown in fig. 1, this embodiment is a further improvement of the embodiment 1 or 2, and is specifically as follows:
a lens 13 is arranged between the 50G EML laser 4 and the filter i 3, a lens 13 is arranged between the 2.5G DFB laser 5 and the filter i 3, and a lens 13 is arranged between the 10G EML laser 6 and the filter i 3.
Furthermore, an optical isolator 14 is arranged between the lens 13 and the filter i 3.
Example 4
As shown in fig. 1, this embodiment is a further improvement of the embodiment 1, 2 or 3, and is specifically as follows:
a collimating lens 15 is arranged between the light outlet of the transmitted light of the Z-Block II 2 and the ferrule 8.
Example 5
As shown in fig. 1, this embodiment is a further improvement of any of embodiments 1 to 4, and is specifically as follows:
the optical filter I3 is adhered to the light inlet of the Z-Block I1, the optical filter II 7 is adhered to the light inlet of the Z-Block II 2, the optical filter III 9 is adhered to the light outlet of the Z-Block II 2, and the optical filter is fixed on the Z-Block in an adhering mode, so that the reliability is high, and the space and the production cost are saved.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. A 50G PON Combo OLT three-mode compatible optical device, comprising: the optical filters I (3) at three light inlets on the Z-Block I (1) respectively face to light outlets of the 50G EML laser (4), the 2.5G DFB laser (5) and the 10G EML laser (6); a light filter II (7) is arranged at the light inlet of the Z-Block II (2), a light filter III (9) at three reflected light outlets on the Z-Block II (2) respectively faces to the light inlets of the 10G APD receiver (10), the 25G APD receiver (11) and the 1.25G APD receiver (12), and the light outlet of the Z-Block II (2) faces to the ferrule (8);
the wavelength of the 50G EML laser (4) is 1342nm, the wavelength of the 2.5G DFB laser (5) is 1490nm, and the wavelength of the 10G EML laser (6) is 1577nm;
the wavelength of the 10G APD receiver (10) is 1270nm, the wavelength of the 25G APD receiver (11) is 1286nm, and the wavelength of the 1.25G APD receiver (12) is 1310nm.
2. A 50G PON Combo OLT three-mode compatible optical device according to claim 1, wherein lenses (13) are arranged between the 50G EML laser (4) and filter i (3), between the 2.5G DFB laser (5) and filter i (3), and between the 10G EML laser (6) and filter i (3).
3. A 50G PON Combo OLT three-mode compatible optical device according to claim 2, wherein an optical isolator (14) is arranged between the lens (13) and the optical filter i (3).
4. A 50G PON Combo OLT three-mode compatible optical device according to claim 1, wherein a collimating lens (15) is arranged between the light-transmitting outlet of the Z-Block ii (2) and the ferrule (8).
5. The 50G PON Combo OLT three-mode compatible optical device according to claim 1, wherein the optical filter I (3) is adhered to the light inlet of the Z-Block I (1).
6. The 50G PON Combo OLT three-mode compatible optical device according to claim 1, wherein the optical filter ii (7) is adhered to the light entrance of the Z-Block ii (2).
7. The 50G PON Combo OLT three-mode compatible optical device according to claim 1, wherein the optical filter iii (9) is adhered to the light outlet of the Z-Block ii (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311318953.8A CN117055179B (en) | 2023-10-12 | 2023-10-12 | 50G PON Combo OLT three-mode compatible optical device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311318953.8A CN117055179B (en) | 2023-10-12 | 2023-10-12 | 50G PON Combo OLT three-mode compatible optical device |
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| Publication Number | Publication Date |
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| CN117055179A CN117055179A (en) | 2023-11-14 |
| CN117055179B true CN117055179B (en) | 2023-12-26 |
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| Publication number | Publication date |
|---|---|
| CN117055179A (en) | 2023-11-14 |
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