CN214851243U

CN214851243U - Wavelength division multiplexing receiving and transmitting assembly for mixed transmission of RFoG and PON

Info

Publication number: CN214851243U
Application number: CN202121354726.7U
Authority: CN
Inventors: 李鸿邑
Original assignee: Sichuan Yuyi Photoelectric Technology Co ltd
Current assignee: Sichuan Yuyi Photoelectric Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-11-23
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a multiplexing receiving and dispatching subassembly of wavelength division that RFoG and PON optical network thoughtlessly passed mainly solves the problem of current RFoG and PON system light signal mutual interference in same root optic fibre. The receiving and transmitting assembly comprises a protection box, a first PWDM filter and a second PWDM filter which are arranged in the protection box, a first optical fiber and an input optical fiber which are connected to two ends of the first PWDM filter, a second optical fiber and an output optical fiber which are connected to two ends of the second PWDM filter, optical fiber supports which are arranged at two ends of the protection box and used for fixing the optical fibers, a receiving terminal connected to the other end of the input optical fiber and a transmitting terminal connected to the other end of the output optical fiber; wherein the first optical fiber and the second optical fiber are connected by a connector. Through the design, the utility model provides a RFoG and PON system light signal mutual interference's problem in same root optic fibre. The combination mode has the characteristics of high signal channel isolation, low mutual interference and stable performance. Therefore, the method is suitable for popularization and application.

Description

Wavelength division multiplexing receiving and transmitting assembly for mixed transmission of RFoG and PON

Technical Field

The utility model belongs to the technical field of communication equipment, specifically speaking relates to a wavelength division multiplexing receiving and dispatching subassembly that RFoG and PON optical network thoughtlessly passed.

Background

The communication technology of the present society is closely related to the life of human beings, and the integration of telecommunication networks, computer networks, cable television networks and related multi-layer services thereof cannot be separated. One of the key technologies for the bearer network is a Wavelength Division Multiplexing (WDM) technology that is a function compatible combination of an RFoG (radio frequency optical fiber transmission) optical network and a PON (passive optical network) system optical network. Because the working wavelength (1550/1610nm) of the RFoG optical signal and the working wavelength of the PON system optical signal (1270/1310/1490/1577nm, 1G/10G PON) are crossed with each other, and the reflected signal of the current single optical filter cannot reach an effective isolation degree of 30dB, the RFoG optical signal and the PON optical signal cannot be transmitted in the same optical fiber all the time, otherwise the RFoG optical signal and the PON optical signal cause mutual interference.

With the increase of wiring density of the current communication base station machine room, in order to reduce construction difficulty and save materials and space resources of optical fiber wiring, common transmission of more services needs to be realized in the same optical fiber, that is, RFoG optical signals and PON optical signals are stably transmitted in the same optical fiber. How to ensure the effective isolation between signals at this time becomes the key of the joint transmission of the RFoG optical signal and the PON optical signal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wavelength division multiplexing receiving and dispatching subassembly that RFoG and PON optical network thoughtlessly passed mainly solves the problem that current RFoG and PON system optical signal mutually interfered in same root optic fibre.

In order to achieve the above object, the utility model adopts the following technical scheme:

a wavelength division multiplexing receiving and transmitting assembly for RFoG and PON optical networks in mixed transmission comprises a protection box, a first PWDM filter and an output PON system optical signal, wherein the first PWDM filter is arranged in the protection box and used for filtering and separating 1550nm signals to analyze television signal services, reflecting the PON optical signals to the next stage, transmitting 1610nm signals to the system and used for transmitting user side instructions, a first optical fiber and an input optical fiber which are connected to two ends of the first PWDM filter, a second optical fiber and an output optical fiber which are connected to two ends of the second PWDM filter, optical fiber supports which are arranged at two ends of the protection box and used for fixing the optical fibers, a receiving terminal connected to the other end of the input optical fiber and a transmitting terminal connected to the other end of the output optical fiber; wherein the first optical fiber and the second optical fiber are connected by a connector.

Further, the first PWDM filter is a 1550nm 1 by 4PWDM filter; the second PWDM filter is a 1610nm 1 by 4PWDM filter.

Further, the first optical fiber and the second optical fiber are 4.

Further, the optical fiber support adopts a rubber plug, and a through hole for the optical fiber to pass through is formed in the rubber plug.

Further, the connector adopts an optical fiber fusion pipe.

Further, the protection box is made of stainless steel.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model provides a can convey the multiplexing light of light signal receiving and dispatching subassembly of 6 and above wavelengths simultaneously, solve RFoG and PON system light signal mutual interference's in same root optic fibre problem. The 1270/1310/3490/1550/1577/1610nm 6-wavelength division multiplexing communication system is realized, and meanwhile, the combination mode has the characteristics of high signal channel isolation, low mutual interference and stable performance.

(2) The utility model discloses well mixed signal all carries out 2 times in 2 wave filters and filters, and signal isolation is up to 32-33dB and above, and different business mutual noninterference, signal quality stability is good.

(3) The utility model discloses well filter adopts the PWDM structure, makes systems such as RFoG signal, 1G PON, 10GPON multiplex and divide the ripples to demultiplex, realizes the sharing of fiber resource, saves space resource, and very big range has reduced the network deployment cost.

(4) The utility model discloses a core part uses the encapsulation of stainless steel casing, sound construction, and stable safe and reliable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of the structure of the protective case of fig. 1.

Wherein, the names corresponding to the reference numbers are:

1-protection box, 2-first PWDM filter, 3-second PWDM filter, 4-first optical fiber, 5-input optical fiber, 6-second optical fiber, 7-output optical fiber, 8-optical fiber support, 9-receiving terminal, 10-transmitting terminal, 11-connector and 12-through hole.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Examples

As shown in fig. 1 and 2, the utility model discloses a wavelength division multiplexing transceiver module that RFoG and PON optical network mix and transmit, including protection box 1 that the stainless steel was made, set up and be used for filtering separation 1550nm signal analysis television signal service and reflect PON photosignal to the first PWDM filter 2 and output PON system photosignal of next stage in protection box 1, with 1610nm signal transfer to the system in be used for transmitting user side instruction second PWDM filter 3, first PWDM filter 2 is 1550nm 1 x 4PWDM filter; the second PWDM filter 3 is a 1610nm 1 by 4PWDM filter. The two filters are fixed in the protection box, the two ends of the first PWDM filter 2 are respectively connected with the first optical fiber 4 and the input optical fiber 5, and the two ends of the second PWDM filter 3 are respectively connected with the second optical fiber 6 and the output optical fiber 7. The optical fiber support 8 for fixing the optical fiber is arranged at two ends of the protection box 1, in the embodiment, the optical fiber support 8 is a rubber plug, and a through hole 12 for the optical fiber to pass through is formed in the rubber plug. The first optical fiber 4, the input optical fiber 5, the second optical fiber 6 and the output optical fiber 7 all penetrate out of the protection box through the through hole 12. And the first optical fiber 4 and the second optical fiber 6 are 4, and the first optical fiber 4 and the second optical fiber 6 are connected together through an optical fiber fusion pipe.

The other end of the input optical fiber 5 is connected to a receiving terminal 9 outside the protective box, and is used for receiving an RFoG downlink 1550nm optical signal. The other end of the output fiber 7 is connected to a transmitting terminal 10 for receiving a 1610nm upstream optical signal.

Through the design, the utility model provides a can convey the multiplexing light of light signal receiving and dispatching subassembly of 6 and above wavelengths simultaneously, solve RFoG and PON system light signal mutual interference's in same root optic fibre problem. The 1270/1310/3490/1550/1577/1610nm 6-wavelength division multiplexing communication system is realized, and meanwhile, the combination mode has the characteristics of high signal channel isolation, low mutual interference and stable performance. Therefore, compared with the prior art, the utility model has the substantive characteristics and progress.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims

1. A wavelength division multiplexing transceiving component for RFoG and PON optical networks to mix transmission is characterized by comprising a protection box (1), a first PWDM filter (2) and a second PWDM filter (3) which are arranged in the protection box (1) and used for filtering and separating 1550nm signals, analyzing television signal services, reflecting PON optical signals to the next stage, outputting PON system optical signals, transmitting 1610nm signals to a system and used for transmitting user side instructions, a first optical fiber (4) and an input optical fiber (5) which are connected with two ends of the first PWDM filter (2), a second optical fiber (6) and an output optical fiber (7) which are connected with two ends of the second PWDM filter (3), an optical fiber support (8) which is arranged at two ends of the protection box (1) and used for fixing optical fibers, and a receiving terminal (9) which is connected with the other end of the input optical fiber (5), and a transmission terminal (10) connected to the other end of the output optical fiber (7); wherein the first optical fiber (4) and the second optical fiber (6) are connected by a connector (11).

2. An RFoG and PON optical network hybrid wavelength division multiplexing transmit receive assembly according to claim 1, wherein the first PWDM filter (2) is a 1550nm 1 x 4PWDM filter; the second PWDM filter (3) is a 1610nm 1 x 4PWDM filter.

3. The wavelength division multiplexing transmit receive assembly according to claim 2, wherein the first optical fiber (4) and the second optical fiber (6) are 4 optical fibers.

4. The wavelength division multiplexing transmit-receive assembly for mixed transmission of an RFoG and a PON optical network according to claim 3, wherein the optical fiber support (8) is made of a rubber plug, and the rubber plug is provided with a through hole (12) for passing an optical fiber.

5. An RFoG and PON optical network hybrid wavelength division multiplexing transceiver module according to claim 4, wherein the connector (11) is a fused fiber pipe.

6. The wavelength division multiplexing transmit-receive assembly for hybrid transmission of RFoG and PON optical networks according to claim 1, wherein the protection box (1) is a stainless steel protection box.