CN216118104U

CN216118104U - Novel double-emitting double-receiving single-fiber four-way optical device

Info

Publication number: CN216118104U
Application number: CN202122620325.8U
Authority: CN
Inventors: 李永强; 陈君林; 谭卫东
Original assignee: Sunstar Communication Technology Co ltd
Current assignee: Sunstar Communication Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-22
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a novel double-transmitting double-receiving single-fiber four-way optical device which comprises a GPON ONU active optical device component and an XGS PON ONU active optical device component. Compared with the prior art, the utility model has the following positive effects: the optical fiber integrated optical network unit integrates the functions of a GPON ONU device and an XGS PON ONU device, integrates 4-wave signals into one optical fiber by utilizing the wavelength division multiplexing function, and simultaneously supports the functions of the GPON ONU and the XGS PON ONU. The existing terminal network equipment can be used, the existing network resources are not required to be changed, the user requirements are changed according to the service package upgrading requirements, and the high-bandwidth service is rapidly and smoothly upgraded.

Description

Novel double-emitting double-receiving single-fiber four-way optical device

Technical Field

The utility model relates to a novel double-transmitting double-receiving single-fiber four-way optical device.

Background

In recent years, with the development of high-bandwidth services such as 4K video, 3D games, virtual reality, and the like, and the driving of the national broadband acceleration policy, the broadband access industry is entering the giga era, and the 10G PON is becoming a mainstream technology. The existing GPON network can not realize hundreds of megas or even gigas of home-in bandwidth under the condition of ensuring enough splitting ratio, needs to be upgraded to a 10G PON network, and can still adopt GPON access for users with low bandwidth requirements. At present, the GPON is upgraded to the 10G PON usually by adopting an external wave combiner scheme, the scheme needs to add additional 10G PON line cards, external wave combiners, optical fiber jumpers, optical fiber distribution frames and other supporting equipment, the construction cost is high, the machine room space occupies a large space, the construction and wiring are complex, and the management and maintenance are difficult. In addition, the optical power loss introduced by the external combiner also affects the optical power budget of the ONU in the existing network, and there is a risk of affecting the user service.

In the current access network technology, a GPON ONU and an XGS PON are different optical network units ONU, and when a user has different requirements, different optical network units ONU are configured according to the requirements of the user, which is often the case especially in old cells and rural areas.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a novel double-transmitting double-receiving single-fiber four-way optical device, aiming at the problem of integrating the functions of a GPON ONU and an XGS PON ONU.

The technical scheme adopted by the utility model is as follows: the utility model provides a novel two send out two receipts single fiber quadriversal optical devices, includes GPON ONU active optical device subassembly and XGS PON ONU active optical device subassembly, wherein:

the GPON ONU active optical device component comprises a first metal shell, and a 1.25G laser TO-CAN, a first 45-degree filter, a first 0-degree filter and a 2.5G detector TO-CAN which are arranged in the first metal shell, wherein the first metal shell is coupled with a metal sleeve end of a first wavelength division multiplexer component;

the XGS PON ONU active optical device component comprises a second metal shell, and a 10G laser TO-CAN, an LD mirror frame, an isolator, a transmitting end LENS, a second 45-degree filter, a receiving end LENS, a second 0-degree filter, a receiving end mirror frame and a 10G detector TO-CAN which are arranged in the second metal shell, wherein the second metal shell is coupled with a metal sleeve end of a second wavelength division multiplexer component;

and the first wavelength division multiplexer assembly and the second wavelength division multiplexer assembly share one tail fiber.

Compared with the prior art, the utility model has the following positive effects:

the utility model integrates the functions of a GPON ONU device and an XGS PON ONU device into a whole, wherein: the XGS PON ONU optical device component comprises a 10G laser TO-CAN, a 10G detector TO-CAN, a 45-degree filter, a 0-degree filter, a receiving end mirror frame, a receiving end lens, a sending end lens, an isolator, a transition sleeve, a transition ring, an LD tube seat and a wavelength division multiplexer component. The novel double-transmitting double-receiving single-fiber optical device integrates 4-wave signals into one optical fiber by utilizing the wavelength division multiplexing function and simultaneously supports the functions of a GPON ONU and an XGS PON ONU. The existing terminal network equipment can be used, the existing network resources are not required to be changed, the user requirements are changed according to the service package upgrading requirements, and the high-bandwidth service is rapidly and smoothly upgraded. The method has the following specific advantages:

1. in the prior art, two optical devices, one XGS PON ONU and one GPON ONU are needed to realize four-wavelength transmission, an external combiner scheme is adopted, and the scheme needs to be additionally provided with 10G EPON line cards, external combiners, optical fiber jumpers, optical fiber distribution frames and other supporting equipment; the utility model can realize four-wavelength transmission by only one optical device, simultaneously supports the functions of GPON ONU and 10G EPON ONU, can use the existing network equipment, does not need to change the existing network resources and does not occupy the extra machine room space.

2. In the prior art, the conventional SBOSA design is adopted, 2 tail fiber structures are required to be adopted and connected by flanges, so that the cost of raw materials is increased, and the power loss of an optical device is greatly increased.

3. The utility model adopts the wavelength division multiplexing function, integrates the functions of the GPON ONU and the 10G EPON ONU, improves the product yield and saves the cost.

Drawings

The utility model will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the working principle of the first wavelength division multiplexer assembly 6 and the second wavelength division multiplexer assembly 17.

Detailed Description

A novel dual-emitting dual-receiving single-fiber four-way optical device, as shown in fig. 1, comprising: the laser comprises a 1.25G laser TO-CAN 1, a first metal shell 2, a first 45-degree filter 3, a first 0-degree filter 4, a 2.5G detector TO-CAN 5, a first wavelength division multiplexer assembly 6, a 10G laser TO-CAN 7, an LD energy storage welding tube seat 8, an LD transition ring 9, an LD mirror frame 10, an isolator 11, a transmitting end LENS 12, a second metal shell 13, a second 45-degree filter 14, a metal protective sleeve 15, a transition sleeve 16, a second wavelength division multiplexer assembly 17, a receiving end LENS 18, a second 0-degree filter 19, a receiving end mirror frame 20, a 10G detector TO-CAN 21 and the like. Wherein:

the structure of (one) first wavelength division multiplexer subassembly 6 and second wavelength division multiplexer subassembly 17 all includes metal sleeve and tail optical fiber and glass pipe, TFF filter in setting up, TFF filter and glass pipe tight fit, glass pipe and tail optical fiber tight fit are fixed with metal sleeve. The first wavelength division multiplexer component 6 is an optical fiber coupling P end, the second wavelength division multiplexer component 17 is a WDM wavelength division multiplexer component, and has a light splitting function, wavelengths of 1270nm and 1577nm pass through, and wavelengths of 1310nm and 1490nm return, wherein the wavelengths of 1310nm and 1490nm are transmitted to the first wavelength division multiplexer component 6, so that the GPON ONU can normally operate, and the working principles of the two components are shown in fig. 2.

(II) 10G laser TO-CAN 7, LD energy storage tube socket 8, LD transition ring 9, LD mirror holder 10, isolator 11, originated LENS 12, second metal casing 13, second 45 filter 14, metal protective sheath 15, transition cover 16, second wavelength division multiplexer subassembly 17, received LENS 18, second 0 filter 19, received mirror holder 20, 10G detector TO-CAN 21 constitute XGS PON ONU active optical device subassembly, wherein:

(1) the second 45-degree filter plate 14 is bonded on the second metal shell 13 by adopting a glue baking process;

(2) the isolator 11 is bonded on the LD mirror bracket 10 by adopting a glue baking process, and then the originating LENS 12 is bonded on the LD mirror bracket 10 by adopting a glue baking process;

(3) the receiving end lens 18 is bonded on the receiving end lens frame 20 through a glue baking process, and then the second 0-degree filter plate 19 is bonded on the receiving end lens frame 20 through the glue baking process;

(4) the closing end mirror bracket 20 is bonded on the second metal shell 13 by a glue baking process;

(5) the metal sleeve end of the second wavelength division multiplexer assembly 17 is in laser welding fit with the second metal housing 13; the transition sleeve 16 is used for penetration welding transition fit, and butt welding is used for fixing fit;

(6) the TO-CAN 21 of the 10G detector is bonded on the second metal shell 13 by a baking glue process;

(7) the second metal shell 13 is coupled with the metal sleeve end of the second wavelength division multiplexer assembly 17, and the transition sleeve 16 is used as an adjusting ring and welded with the metal sleeve of the second wavelength division multiplexer assembly 17 into a whole by adopting a laser welding process; then the metal protective sleeve 15 is matched with the second metal shell 13 by laser welding;

(8) the 10G laser TO-CAN 7 and the LD energy storage welding tube seat 8 adopt resistance welding, discharge and fusion TO be integrated, and then the whole laser TO-CAN 7 and the LD frame 10 are welded into a whole as an adjusting ring through a laser transition ring 9: the 10G laser TO-CAN 7 is coupled with the LD frame 10, and the transition ring 9 is used as an adjusting ring and welded into a whole by adopting a laser welding process;

(9) the TO-CAN 21 of the 10G detector is coupled with the second metal shell 13, ultraviolet glue is pre-cured, epoxy resin glue is used for high-temperature curing, the temperature is controlled TO be 85 +/-10 ℃, and the time is 80-100 minutes.

(10) In order to eliminate welding stress and enable a product to reach a stable state, the assembled XGS PON ONU active optical device component is subjected to temperature cycling at-40 ℃ to 85 ℃, wherein the constant temperature holding time of-40 ℃ and 85 ℃ is at least 30 minutes and is a cycle period, and each cycle is not less than 40 cycles.

(III) 1.25G laser TO-CAN 1, first metal casing 2, first 45 filter 3, first 0 filter 4, 2.5G detector TO-CAN 5, first wavelength division multiplexer subassembly 6 constitute GPON ONU active optical device subassembly, wherein:

(1) the first 45-degree filter plate 3 is bonded on the first metal shell 2 by adopting a glue baking process;

(2) the first 0-degree filter 4 is bonded on the first metal shell 2 by adopting a glue baking process;

(3) the 1.25G laser TO-CAN 1 is matched with the first metal shell 2 in a press-fitting mode;

(4) the SC-APC end of the blue tail fiber of the first wavelength division multiplexer component 6 is coupled with the GPON ONU and then welded into a whole by adopting a laser welding process; the function of this step is to transmit 1310nm and 1490nm wavelengths to the GPON ONU;

(5) the 2.5G detector TO-CAN 5 is bonded on the first metal shell 2 by a baking glue process.

The XGS PON ONU and the GPON ONU are coupled and welded into a whole by adopting a laser welding process; the 4-wave signals are integrated into one optical fiber by using a wavelength division multiplexing function, and simultaneously, the functions of a GPON ONU and an XGS PON ONU are supported.

Claims

1. A novel double-emitting double-receiving single-fiber four-way optical device is characterized in that: including GPON ONU active optical device subassembly and XGS PON ONU active optical device subassembly, wherein:

2. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the structure of first wavelength division multiplexer subassembly and second wavelength division multiplexer subassembly all includes glass pipe, the TFF filter that metal sleeve and tail optical fiber and metal sleeve set up, TFF filter and glass pipe tight fit, glass pipe and tail optical fiber tight fit.

3. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the second wavelength division multiplexer component is a WDM wavelength division multiplexer component and has a light splitting function, wavelengths of 1270nm and 1577nm pass through, wavelengths of 1310nm and 1490nm return, and the wavelengths of 1310nm and 1490nm are transmitted to the first wavelength division multiplexer component.

4. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the second 45-degree filter plate 14 is bonded on the second metal shell; the isolator and the transmitting LENS are bonded on the LD LENS frame; the TO-CAN laser and the LD energy storage welding tube seat of the 10G laser are welded into a whole by adopting resistance welding, discharging and welding, and then the whole laser and the LD mirror frame are welded into a whole by taking a laser transition ring as an adjusting ring.

5. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the receiving end lens and the second 0-degree filter are bonded on the receiving end lens frame; the end mirror bracket is bonded on the second metal shell.

6. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the metal sleeve end of the second wavelength division multiplexer component is in laser welding fit with the second metal shell; using a transition sleeve to penetrate, weld and transition fit; the TO-CAN of the 10G detector is bonded on the second metal shell; the metal protective sleeve and the second metal shell are matched by laser welding.

7. The novel double-emitting double-receiving single-fiber four-way optical device as claimed in claim 1, wherein: the first 45-degree filter and the first 0-degree filter are bonded on the first metal shell; the 1.25G laser TO-CAN is matched with the first metal shell in a press-fitting mode; the SC-APC end of the blue tail fiber of the first wavelength division multiplexer component is coupled with the TO-CAN of the 1.25G laser and then is welded with the first metal shell into a whole by adopting a laser welding process; the 2.5G probe TO-CAN 5 is bonded TO the first metal housing.