JPS63240305A - Emergency transmission equipment for removal of optical fiber composite overhead grounding line caused by failure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an emergency optical transmission device used for relocating a problem in an optical fiber composite overhead ground wire (OPGW).

[Prior Art] Conventionally, when relocating a 0PGW due to a problem, a method of using an emergency optical transmission cable has been common. That is, Figures 3 and 4
As shown in the figure, the 0PGW 2 installed between the steel towers 1.1 in the obstructive relocation section is cut, and the on-site connector 4, which can be installed in a short time at the work site, is attached to the optical fiber 3 in the cut section. This connector 4 is connected to one end of an emergency cable 6 with a multi-core connector having a required number of multi-core connectors 5 at both ends, and stored in a 0PGW connection box 7. Then, the multi-core adapter 8 successively connects the multi-core connectors to connect the fibers in the affected relocation section.

In this way, 8 scale parts are required to relocate the 0PGW, but since all of these parts are used outdoors, they are required to be weatherproof and waterproof, and from the perspective of cable installation. Greater mechanical strength and lighter weight are required for installation work.

This increases the number of parts, and the work required to relocate the problem requires the same effort and time as installing a new cable. Moreover, on the route of the laid cable, installation of poles 9 and hanging wires 10 for cable laying as necessary, support of the emergency cable 6 with cable hangers 11, and preparation work for cable protection may be carried out depending on the location. This meant that it was not suitable for emergency use.

[Problems to be Solved by the Invention] As described above, the conventional hindrance relocation using emergency cables has a large number of parts and is cumbersome to handle and operate, making it unsuitable for emergency use.

The present invention solves the drawbacks of the above-mentioned conventional technology by using optical space transmission 2 for transmission in the trouble relocation section without using emergency cables when relocating a 0PGW, and the number of parts is small and handling is easy. , 0PG with easy operation
An object of the present invention is to provide an emergency transmission device for relocating a problem in W.

[Means for Solving the Problems] In the 0PGW fault relocation emergency transmission device of the present invention, converters are installed facing each other at locations where the other towers can be seen from the towers located on both sides of the fault relocation section.

The converter mutually converts the optical signal transmitted to the own tower via the 0PGW optical fiber and the optical signal transmitted from the opposite tower through space.

[Function] The spatial optical signal obtained by converting the optical signal transmitted to the optical fiber by the converter on the own side is sent toward the converter on the other side attached to the steel tower on the other side, while the above-mentioned on the other side A spatial optical signal sent out from the converter is received by the local converter, converted into an optical signal transmitted through the optical fiber, and then transmitted to the optical fiber. Therefore, there is no need to install an emergency transmission cable τ in the affected relocation section.

[Example] An example of the present invention will be described below based on FIGS. 1 and 2.

FIG. 1 shows an example of an emergency transmission system for trouble relocation of 0PGW according to the present invention. Converters 12 and 12 for mutually converting optical fiber optical signals and spatial optical signals are attached to the steel towers 1, 1 located on both sides of the trouble relocation section S, in a place where the opposing steel tower 1 can be seen. It will be done. The O P GW optical fiber 3 drawn out from the 0 P GW junction box 7 is connected to each converter 12 , and the self-side iron i? Apply the optical signal transmitted to 51. For this reason, the cut 0PGW2 is guided to the 0PGW connection box 7. Furthermore, the converters 12, 12 are installed facing each other so that they can receive the optical signal 1 sent from the opposite steel tower 1 through the space.

The converter 12 has a multiplexing structure as shown in FIG. The electric converter 21 converts it into an electric signal. This electrical signal is amplified by an amplifier 22, guided to an electrical/optical converter 23, and converted into an optical signal again, after which an optical signal with a wavelength λ1 is outputted toward space from an emitting section 24. On the other hand, after receiving the spatial optical signal of wavelength λ2 at the receiving section 25, it is added to the optical-to-electrical converter 26 and converted into an electrical signal. This electrical signal is amplified by an amplifier 27 and guided to an electrical/optical converter 28, where it is again converted into an optical signal, and then guided to a demultiplexer 20 to output an optical signal of wavelength λ2 to the optical fiber 3.

Now, the operation of the above-mentioned configuration is as described above, but when relocating a hindrance with such a configuration, the converter 12, which also serves as both a transmitter and a receiver, is placed on both sides of the hindrance relocation section. All you have to do is attach them to the steel towers 1 and 1 located at . Therefore, the number of parts is extremely reduced, and there is no need to prepare poles, hanging wires, cable hangers, or cable protection for emergency cable installation, and the work involved in relocating a problem is drastically reduced.

[Effects of the Invention] To summarize, according to the present invention, optical space transmission is performed using a converter instead of transmission using an emergency cable, so that the apparatus can be simplified.

Therefore, it is easy to handle, easy to operate, and has an excellent effect of being suitable for emergency use.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the 0PGW failure relocation emergency transmission device of the present invention, FIG. 2 is a block diagram showing an example of the converter shown in FIG. 1, and FIG. FIG. 4 is a block diagram illustrating the failure relocation emergency transmission system, and FIG. 4 is an explanatory diagram of the main part of FIG. 3. In the figure, 7 is a steel tower, 2 is an optical fiber composite overhead ground wire, 3 is an optical fiber, 12 is a converter, S is a trouble relocation section, and j is a spatial optical signal.

Claims (1)

[Claims] Optical signals are transmitted to the own tower via the optical fiber of the optical fiber composite overhead ground wire, and transmitted from the other tower through space, at locations where the towers located on both sides of the affected relocation section can see the other tower. 1. An emergency transmission device for relocating a problem in an optical fiber composite overhead ground line, characterized in that converters for mutually converting the optical signal and the optical signal are installed facing each other.