Novel 50GCombPON three-transmitting and three-receiving single-fiber six-direction optical device

Abstract

The utility model discloses a novel 50G Combo PON three-transmitting and three-receiving single-fiber six-direction optical device, which comprises a 50G PON optical assembly transmitting TO-CAN, a 50G PON optical assembly receiving TO-CAN, an XGSPON optical assembly transmitting TO-CAN, an XGSPON optical assembly receiving TO-CAN, a GPON optical assembly transmitting TO-CAN and a GPON optical assembly receiving TO-CAN which are packaged in a metal shell, and the metal shell and an insertion core assembly are welded together through laser. The beneficial effects of the utility model are that a Combo packaging technology is utilized, the light splitting filters are respectively adopted in the same metal square shell for independent coupling welding, a finished product supports the functions of a 50G PON, a GPON and an XGSPON at the same time, the module integration is high, the material types can be saved, the material cost can be reduced, and a positive effect is played on the upgrading of an access technology.

Description

Technical Field

[0001] The utility model relates to a novel 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device. Background Art

[0002] With the continuous development of high-bandwidth services such as 4K video, 3D games, and virtual reality, and driven by the national broadband speed-up policy, the broadband access industry is moving towards the 50G era. At the same time, GPON access and 10GXGSPON are retained for users with low bandwidth requirements, and higher speed, higher bandwidth, higher density, higher link budget, and multi-standard and multi-functional coexistence are achieved. Compared with existing technologies, the two technical routes of IEEE and ITU are developing in parallel. As the preferred technology for the next generation of access, 50GPON has begun to merge with GPON, XGSPON, and XGPON, and two or three generations of multi-access standards coexist. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model proposes a new type of 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device, which integrates three types of optical devices together and adopts splitter filter technology to achieve single-fiber six-wavelength transmission, aiming to solve the problem of integrating 50G PON, XGSPON and GPON functions.

[0004] The utility model solves the technical problem by adopting the following technical solution: a novel 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device, comprising a 50G PON optical component transmitting TO-CAN, a 50G PON optical component receiving TO-CAN, an XGSPON optical component transmitting TO-CAN, an XGSPON optical component receiving TO-CAN, a GPON optical component transmitting TO-CAN and a GPON optical component receiving TO-CAN encapsulated in a metal shell, wherein the metal shell and the ferrule assembly are laser welded together; the 50GPON optical component transmitting TO-CAN is 1342nm 50G EML, the XGSPON optical component transmitting TO-CAN is 1577nm 10GEML, and the GPON optical component transmitting TO-CAN is 1490nm 2.5G DFB, and the three are arranged in the left high-band area; the GPON optical component receiving TO-CAN is 1310nm 2.5G APD, and the 50G PON optical component receiving TO-CAN is 1286nm 25GAPD, the XGSPON optical component receives TO-CAN as 1270nm 10G APD, and the three are set in the low-band area on the right.

[0005] Compared with the prior art, the positive effects of the utility model are:

[0006] The utility model integrates three single-fiber bidirectional devices, 50G PON, 10G XGS PON, and 2.5GPON, into a single-fiber six-way device. 50G PON 1342nm wavelength downstream, 25G 1342nm wavelength upstream, XGSPON 1577nm wavelength downstream, 1270nm wavelength upstream, GPON 1490nm wavelength downstream, 1310nm wavelength upstream, a total of three transmissions, three receptions, and six directions, integrating three types of PON into one, and integrating the functions of TOSA devices and ROSA devices into one. The utility model uses Combo packaging technology, and uses separate optical splitter filters in the same metal square shell for separate coupling and welding. The finished product supports 50GPON, GPON, and XGSPON functions at the same time. The module is highly integrated, which can save material types, reduce material costs, and play a positive role in the upgrading of access technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0008] Figure 1 The appearance and wavelength of the TO CAN used in this utility model are introduced;

[0009] Figure 2 This is a schematic diagram of the TO CAN arrangement of the utility model;

[0010] Figure 3 It is a schematic diagram of the structure of the utility model;

[0011] Figure 4 This is a schematic diagram of the appearance and dimensions of the utility model;

[0012] The reference numerals in the figure include: 50G PON optical component transmitting TO-CAN 1, XGSPON optical component transmitting TO-CAN 2, GPON optical component receiving TO-CAN 3, 50G PON optical component receiving TO-CAN 4, GPON optical component transmitting TO-CAN 5, XGSPON optical component receiving TO-CAN 6, metal shell 7, and core assembly 8. DETAILED DESCRIPTION

[0013] A new type of 50G Combo PON three-transmit three-receive single-fiber six-way optical device, such as Figure 1As shown in the figure, there are 6 TO CANs including 50G PON optical components, XGSPON optical components and GPON optical components, namely 50G PON optical component transmitting TO-CAN 1 (1342nm50G EML) and 50G PON optical component receiving TO-CAN 4 (1286nm 25G APD), XGSPON optical component transmitting TO-CAN 2 (1577nm 10G EML) and XGSPON optical component receiving TO-CAN 6 (1270nm 10G APD), GPON optical component transmitting TO-CAN 5 (1490nm 2.5G DFB) and GPON optical component receiving TO-CAN 3 (1310nm 2.5G APD), among which: EML TO is basically the same as the conventional product, DFB TO adopts the TO38 structure with mature technology, 1310 2.5G APD adopts TO33 structure, which can compress the length and width of the optical device to the maximum extent to meet the requirements of QSFP-DD and SFP-DD modules, with a total length of less than 33mm and a width of less than 11mm.

[0014] like Figure 2 As shown, in order to ensure the rationality of the layout and achieve the optimal wavelength splitting and coupling efficiency, the six TOCANs are set separately according to the low band 1270nm-1310nm and the high band 1342nm-1577nm.

[0015] like Figure 3 As shown, the specific packaging process of the utility model is:

[0016] (1) Assembling the ferrule assembly 8 into the housing 7 and performing laser 9 spot welding to form a common Base assembly, wherein the ferrule assembly 8 is a collimated light structure;

[0017] (2) Couple the 50G PON optical component transmitting TO-CAN 1 (1342nm 50G EML) with the ferrule component 8 and the housing 7 component. After the optical power is monitored to the maximum value through the optical fiber of the ferrule component, laser 9-point welding is used to ensure that the optical power reaches the maximum value;

[0018] (3) Couple the XGSPON optical component transmitting TO-CAN 2 (1577nm 10G EML) with the ferrule component 8 and the housing 7 component. After the optical power is monitored to the maximum value through the optical fiber of the ferrule component, laser 9-point welding is used to ensure that the optical power reaches the maximum value;

[0019] (4) Couple the GPON optical component receiving TO-CAN 3 (1310nm 2.5G APD) with the ferrule component 8 and the housing 7 component, inject light through the ferrule component optical fiber and monitor the TO-CAN 3 photocurrent to the maximum value, then use UV glue for pre-curing and then use black glue for high-temperature curing to ensure that the photocurrent reaches the maximum value;

[0020] (5) Couple the 50G PON optical component receiving TO-CAN 4 (1286nm 25G APD) with the ferrule component 8 and the housing 7 component. After the light is input through the ferrule component optical fiber and the TO-CAN 4 photocurrent is monitored to the maximum value, UV glue is used for pre-curing and then black glue is used for high-temperature curing to ensure that the photocurrent reaches the maximum value.

[0021] (6) Couple the GPON optical component transmitting TO-CAN 5 (1490nm 2.5G DFB) with the ferrule component 8 and the housing 7 component. After the optical power is monitored to the maximum value through the optical fiber of the ferrule component, laser 9-point welding is used to ensure that the optical power reaches the maximum value;

[0022] (7) The XGSPON optical component receiving TO-CAN 6 (1270nm 10G APD) is coupled with the ferrule component 8 and the shell 7 component. Light is input through the ferrule component optical fiber and the TO-CAN6 photocurrent is monitored to the maximum value. After that, UV glue is used for pre-curing and then black glue is used for high-temperature curing to ensure that the photocurrent reaches the maximum value.

[0023] The structural assembly of the overall three-in-one optical component is basically completed, and then the temperature cycle is carried out. The constant temperature of -40℃ and 85℃ is maintained for at least 30 minutes as a cycle, and each cycle is not less than 40 cycles. After the temperature cycle, the performance of each end is tested for electrical parameters, and the product is formed after it is confirmed to be qualified. Figure 4 As shown in the figure, the width of the molded product is 6.6mm, the height is 10.7mm, and the total length is less than 33mm, which can be applied to QSFP-DD and SFP-DD module assembly; and three transmitters and three receivers share one optical fiber, and signal transmission does not interfere with each other.

Claims

1. A new type of 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device, characterized by: It includes a 50G PON optical component transmitting TO-CAN, a 50G PON optical component receiving TO-CAN, an XGSPON optical component transmitting TO-CAN, an XGSPON optical component receiving TO-CAN, a GPON optical component transmitting TO-CAN and a GPON optical component receiving TO-CAN encapsulated in a metal shell, and the metal shell and the ferrule assembly are laser welded together; the 50G PON optical component transmitting TO-CAN is 1342nm 50G EML, the XGSPON optical component transmitting TO-CAN is 1577nm 10G EML, and the GPON optical component transmitting TO-CAN is 1490nm2.5G DFB, and the three are arranged in the left high-band area; the GPON optical component receiving TO-CAN is 1310nm 2.5G APD, the 50G PON optical component receiving TO-CAN is 1286nm 25G APD, and the XGSPON optical component receiving TO-CAN is 1270nm10G APD, and the three are arranged in the right low-band area.

2. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The 50G PON optical component transmitting TO-CAN, the XGSPON optical component transmitting TO-CAN and the GPON optical component transmitting TO-CAN are respectively coupled to the ferrule assembly and the metal shell until the optical power reaches the maximum value and then laser welding is performed.

3. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The GPON optical component receiving TO-CAN, the 50G PON optical component receiving TO-CAN and the XGSPON optical component receiving TO-CAN are respectively coupled to the ferrule component and the metal shell until the photocurrent reaches a maximum value, and then pre-cured with ultraviolet glue and then cured with black glue at high temperature.

4. The novel 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device according to claim 1 is characterized in that: The ferrule assembly is a collimated light structure.

5. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The GPON optical component transmitting TO-CAN adopts a TO38 structure.

6. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The GPON optical component receives the TO-CAN using a TO33 structure.

7. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The three-transmit three-receive single-fiber six-directional optical device has a width of 6.6 mm, a height of less than 11 mm, and a total length of less than 33 mm.

8. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: Three transmitting TO-CANs and three receiving TO-CANs share one optical fiber.

9. The novel 50G Combo PON three-transmit three-receive single-fiber six-way optical device according to claim 1 is characterized in that: The three transmitting TO-CANs and the three receiving TO-CANs are coupled and welded separately using a spectroscopic filter.

10. The novel 50G Combo PON three-transmitter and three-receiver single-fiber six-way optical device according to claim 1 is characterized in that: After the ferrule assembly is assembled into the metal housing, nine-point laser welding is used to form a common Base assembly.

Images