JPS6010210A - Optical multiplexing and demultiplexing device - Google Patents

Abstract

PURPOSE:To enable multiple transmission of optical wavelength and to decrease coupling points and the coupling loss of light with simple constitution by using a plug type for a connector used t couple a light emitting part and a photodetecting part and a receptacle type at the incident and exit ends of the light subjected to wavelength multiplexing. CONSTITUTION:The plugs 12-2, 12-3 provided at an optical multiplexer 11-1 are directly coupled to receptacles 14-2, 14-3 which are the exit ends of different wavelengths provided in a light emitting part 14. On the other hand, a receptacle 13 which is the exit end of the light multiplexed with different wavelengths by the multiplexer 11-1 is directly coupled to the plug 16-1 of a fiber cable 16. The 16-1 and the receptacle 13 are similarly directly coupled at the incident end of the demultiplexer 11-2 on the receiving side and the 12-2, 12-3 which propagate the different wavelengths demultiplexed by the optical demultiplexer are coupled to the receptacles 15-2, 15-3 in a photodetecting part 15. The transmission system for optical wavelength multiplexing having a decreased coupling loss of light is thus obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical multiplexing/demultiplexing device that performs wavelength multiplexing transmission using optical fibers. .

Configuration of conventional example and its problems Conventionally, this type of optical multiplexing/demultiplexing device is shown in Fig. 1 (a) and (a).
As shown in (b), a boob-type connector (hereinafter referred to as "optical multiplexer/demultiplexer") is connected to the optical input/output end of the optical multiplexer/demultiplexer 1 (hereinafter, the optical multiplexer is referred to as 1-1 and the optical demultiplexer is referred to as 1-2). (called a plug) 2-1~
2-3, or seven socket type conerters (hereinafter referred to as receptacles) 3-1 to 3-3.

Therefore, if all the structures shown in Figure 1 (A) are used for coupling the transmitting and receiving system, the configuration shown in Figure 1 (C) will be obtained, and the structure shown in Figure 1 (C) will be obtained.
When the one shown in Figure (B) is used, the configuration is shown in Figure 1).

First, the configuration shown in FIG. 1(c) will be explained. Light emitting part 4
receptacle 4-2, which is an emitting end for a plurality of different wavelengths;
．． 4-3 and the plugs 2-2 and 2-3 of the optical multiplexer 1-1. A jack 7 is used to connect the plug 2-1 on the output side of the optical demultiplexer 1-1 and the plug 6-1 of the optical transmission fiber cable 6. In the same way, the optical branch 1. The plugs 6-2 and 2 to 1 are connected using the receptacle 7, and the plug 2-2.2-3 is connected to the receptacle 5-2.5-3, which is the input end of each wavelength of the light receiving section 6. .

On the other hand, in the configuration shown in FIG. Combine using 8. The transmission and reception are similar to the configuration shown in Figure 1 (c) above.
The fiber cable 6 provided at both ends of the plug 6-1 is directly connected to the optical multiplexing phase 1-1 with the receptacle 3-1 and the optical wave wave 1-2.
Combine with glue septacle 3-1.

In the conventional example of the configuration shown in FIG. 1(c), two jacks 7 are required. In addition, in the configuration shown in Fig. 1), all 8 fiber cables are required, and there are more coupling points than in the configuration shown in Fig. 1 (c).
In the configuration (c), there are 4 locations, and in the configuration shown in FIG. 1, there are 6 locations), so the insertion loss due to optical coupling becomes large.

OBJECTS OF THE INVENTION The purpose of the present invention is to eliminate all of the above-mentioned conventional drawbacks, and to provide an optical multiplexing/demultiplexing device that can perform optical wavelength multiplexing transmission with a simple configuration.

Structure of the Invention In order to achieve the above object, the present invention provides a plug at the tip that connects the light emitting section and the light receiving section, and a beam septacle at the tip that connects the transmitting side and the receiving side.

Description of examples An embodiment of the present invention will be described below based on FIG. 2.

11 shown in Figure 2 (a) is an optical multiplexer/demultiplexer (in the following explanation, the optical multiplexer will be referred to as 11-1, and the optical 9J device will be referred to as 11-2).
The light input/output end is composed of plugs 12-2, 12-3 and a cenotacle 13. Fig. 2 (0) is an example in which the beam safetacle 13 is provided on the opposite side of the entire plug 12-2 and 12-3.

The entire configuration of the transmitting and receiving system is shown in FIG. 2 (c). Optical multiplexer kR11
The plugs 12-2 and 12-3 provided at -1 are directly coupled to receptacles 14-2 and 14-3 provided in the light emitting section 14, which are emission ends for different wavelengths. On the other hand, the plug 16-1 of the fiber cable 16 is directly coupled to the receptacle 13, which is the output end of the light multiplexed with different wavelengths by the optical multiplexer 11-1. Similarly, at the input end of the optical splitter 11-2 on the receiving side, the plug 16-1 and the receptacle 13 are directly coupled, and the plugs 12-2 and 12-3 that transmit the different wavelengths split by the optical splitter are connected. Light receiving part 1
6 receptacles 16-2 and 15-3.

In this way, an optical wavelength multiplexing transmission system can be constructed.

Effects of the Invention The present invention has the above-mentioned configuration, and employs a plug type connector for connecting to the light emitting part and the light receiving part, and a receptacle type for the input/output ends of wavelength-multiplexed light, so that it is easy to use. Optical wavelength multiplexing transmission is possible with this configuration, and the number of coupling points is reduced from six to four (in a single wavelength system), reducing optical coupling loss.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are structural diagrams of conventional optical multiplexing and demultiplexing equipment, and Figures 1 (c) and (b) are structural diagrams of conventional optical multiplexing and demultiplexing equipment. Figures 2 (A) and (B) are structural diagrams of an optical multiplexer/demultiplexer used in an embodiment of the present invention, and Figure 2 (C) is a configuration diagram of an optical multiplexer/demultiplexer in an embodiment of the present invention. It is a diagram. 11...Optical multiplexer/demultiplexer, 12-2, 12-3゜16-1...Plug, 13.14-2.14-
3゜15-2, 16-3...Receptacle, 1
4-・River・Light-emitting part, 16... Light-receiving part, 16...
・Fiber cable.

Claims (1)

[Claims] A light-emitting part that emits a plurality of lights of different wavelengths and has a plug-type connector corresponding to the number of lights, and a fiber that has a plug-type connector at its tip to be coupled to the receptacle-type connector is led out, and a receptacle is connected to the output end. an optical multiplexer having a type connector, an optical demultiplexer having a receptacle type connector at the input end and leading out a plurality of fibers having a plug type connector at the tip, and coupling with the plug type connector of the optical multiplexer. an optical multiplexer/demultiplexer comprising a light receiving section having a 15-septacle connector, and the optical multiplexer glue septacle-type connector and the optical demultiplexer glue septacle-type connector are coupled by a fiber cable having plug-type connectors at both ends. Device.