JPS62265826A - Optical signal converter with high pass function - Google Patents

Abstract

PURPOSE:To prevent communication line disconnection at the time of a fault of communication equpment or power failure by providing a bypass function section of an optical signal and a function section selecting a path of the optical signal. CONSTITUTION:In applying a voltage to an optical signal path selection signal input line (22), a coil (1) is excited to attract a metallic plateand an output optical signal connector (16) is connected to a point Dand an input optical signal connector (17) is connected to a point B. Aninput optical signal (1) is supplied photoelectric signal conversion section (6),where the signal is converted into an electric signal and outputted as an output electric signal (2), and an input electric signal (3) entersan electrooptic conversion section (7), where the signal is converted into an optical signal and outputted as an output optical signal (4). Whenno voltage is applied to an optical signal path selection signal input line(22), the moving part (9) is attracted by a spring (12), the input optical signal(1) enters an optical signal bypass (8) through a point A and is outputted as an output optical signal (4) through a point C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical signal converter having an optical signal bypass function to prevent communication line disconnection when a communication device fails or disconnects. The present invention relates to an optical signal conversion device with a bypass function suitable for an optical communication form in which a directional communication path is in the form of a loop.

[Conventional technology]

Examples of conventional devices include an optical signal conversion device as shown in FIG. 3 and an electrical signal switching device.

In this case, the signal path with 1 communication device is: when receiving the communication device, optical signal → signal converter → electrical signal switching device → communication device receiving end, and when transmitting, 8 communication device transmitting end → electrical signal switching The sequence is device→signal converter→optical switch, and in the event of a failure or other bypass, the order becomes optical signal→signal converter→electrical signal switching device→signal converter→optical signal as shown in FIG.

Another example is the above-mentioned method using a signal converter and an optical switch as shown in FIG. Optical switch → Optical signal converter → Communication device receiving end, 1 when transmitting
Communication device transmitting end→optical signal converter→optical switch→optical signal, and when bypassed in case of failure, etc., as shown in Figure 6,
Optical signal → optical switch → optical signal.

In addition, Figure 3.93 is publicly known as an introduction to optical device technology for optical communication systems as an optical switch, co-authored by Nagashi Uchida, Norio Kurochi, and Kazuo Okuno, Gijutsu Hyoronsha.

[Problem that the invention seeks to solve]

However, among the above-mentioned conventional techniques, according to the method based on the combination K of the optical signal converter and the electrical signal converter mentioned above, even when bypassing due to failure etc., the optical signal converter part does not
Power must be supplied separately in some way, and if this separate power supply fails, the loop will be disconnected even if one communication device is operating normally, resulting in an abnormal loop as a whole. Teshi, mau.

In addition, in the method using an optical switch described later, the above-mentioned drawback is satisfied because the light is bypassed without converting the optical signal into an electrical signal.
Optical signal cables must be installed between the optical transmitter/receiver end and the optical signal converter, which increases the mounting space and increases optical loss at each junction point. No consideration was given to the possibility that the overall loop length might become small.

An object of the present invention is to solve the above problems.

[Means for solving problems]

Is the above purpose an optical signal? An optical signal converter includes a converting section that converts into an electrical signal, and a converting section that converts the electrical signal into an optical signal.

This is achieved by providing a functional unit that selects the path of the optical signal.

[Effect]

By the operation of the functional section that selects the path of the optical signal.

In the case where the input optical signal is output as an optical signal (bypass), the input optical signal is converted to an electrical signal and output as an electrical signal, and the input electrical signal is converted into an optical signal. Either one of the two cases where the signal is output as an optical signal is selected and operated. The selection of two cases for the functional section is 0: when the communication device fails or is disconnected, etc., and 11: during normal operation, the signals that act on the machine-phase section are in an exclusive relationship, resulting in malfunction. Never.

Also, by using this method, even if there is an abnormality in one communication device or the power supply for driving the signal switching mechanism, a loop configuration is automatically formed.

There is no longer a need for constant monitoring.

〔Example〕

The following is a fruit of this invention! An example is shown in FIG. 1 and will be described as an example useful for installing in each communication device.

0 When voltage is applied to the optical signal path selection signal input lFM (22).

At this time, the coil (10) is excited and the metal plate (11
) (, Therefore, the movable part (9) is moved by the movable part guide (1
3°14), resulting in the state shown in Figure 1. That is, the output optical signal connector joint part (16) is D.

The input optical signal connector joint (17) is connected to B.

Then, the input optical signal (1) is converted from optical signal to electrical signal converter (
6), where it is converted into an electrical signal, and the contact input electrical signal (3) passes through the contact to the electrical signal → optical signal converter (
7), where it is converted into an optical signal, and the output optical signal (4
) is output as

0 When no voltage is applied to the optical signal path selection signal input line (22), or when the power for the optical signal selection drive mechanism section is turned off.

At this time, since the coil (10) is not excited, the movable part (
9) is a movable part guide (13° 14
) is overflowing and pulled away. That is, the output optical signal connector joint part (16) is connected to C and the input optical signal connector joint part (
17) is connected to A. Then, the input optical signal (11 is
It passes through B and enters the optical signal bypass section (8), and passes through C and is output as an output optical signal (4).

Therefore, according to this embodiment, the point that one communication line is disconnected when the power of the communication device is cut off, which was not taken into account in the prior art,
Or, an optical signal conversion device is always required, or
This has the effect of solving the problems of increased mounting space and increased optical loss.

The basic structure and operation of Fig. 2 are the same as Fig. 1, but
Within the optical signal bypass function, the optical signal → electrical signal → optical signal. The difference from FIG. 1 is that a signal shaping function section (18) is included.

This function allows signal shaping to be performed even when no voltage is applied to the optical signal path selection function section (5).

It becomes possible to lengthen the communication line. Therefore.

When a building is constructed, it is possible to install a communication device on one communication line in advance at a location where it is considered necessary, making it possible to connect the signal line of one communication device as easily as inserting a power plug into a socket. You can use the line. Furthermore, since signals are transmitted and received using electrical signals on the one communication device side, the reliability of the signal connection can be improved, in addition to the effect shown in FIG.

In addition, as shown in Fig. 2, when the present invention is used as a connector, optical communication lines can be used anywhere there is a connector, so optical communication lines can be used easily. Since the signal connection section with the communication device side is an electric signal, there is also the effect that the reliability of the signal connection section can be improved.

The method shown in Figure 2 basically has the same means as the one shown in Figure 5, but by having the optical signal converter inside, which was originally located outside, it can be made smaller and the optical loss can be amplified. Therefore, one communication path is not damaged.

〔Effect of the invention〕

The advantage of the present invention is that there are fewer connections between cables and equipment such as optical switches between one communication device compared to conventional methods.
It is possible to reduce the number of optical connectors in optical communication cables,
Low cost and small space. Furthermore, since optical loss between one communication device is reduced, the signal transmission distance between both communication devices can be increased. This effectively prevents the communication line from being disconnected when one communication device malfunctions or when the power is cut off.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of an embodiment of the present invention which is advantageous when installed in each communication device, and FIG. 2 is a structural diagram of an embodiment of the present invention which is advantageous for signal lines. FIGS. 3 and 4 show a conventional example of a combination K of an optical signal converter and an electrical signal selection device (FIG. 5 shows a bypass state). This is a conventional example using a combination of a signal converter and an optical switch. 1 is an input optical signal, 2 is an output electrical signal, 3 is an input electrical signal, 4 is an output optical signal, 5 is an optical signal path selection function section, 6 is an optical signal → electrical signal conversion section, 7 is an electrical signal → optical signal Signal conversion unit, 8 optical signal bypass unit, 9 is a movable part, 10 is a coil,
11 is Kinsuzaka, 12 is a spring, 13 is a movable part guide, 1
4 is a movable part guide, 15 is a case. 16 is an output optical signal connector joint part, 17 is an input optical signal connector joint part, 18 is a power supply part for the optical signal selection drive mechanism part, 19 is a signal shaping function part (operates only when the optical signal is bypassed), and 20 is a Signal shaping function unit operating power supply (always energized when optical signal is bypassed), 21 is power supply for optical signal converter, 2
2 is a signal input line for optical signal route selection 23 is a driver, 28
is an optical cable, and 24 is a receiver. 25 is a relay optical fiber, 26 is an optical switch body, 27
is an electrical signal selection device. (. Den

Claims (1)

[Claims] An optical signal conversion device comprising a conversion section that converts an optical signal into an electrical signal, and a conversion section that converts the electrical signal into an optical signal,
By providing an optical signal conversion device consisting of an optical signal bypass function unit and a function unit that selects an optical signal path, the operation of the optical signal path selection function allows (1) input optical signals to be is output as an optical signal (bypass); and (2) the input optical signal is converted to an electrical signal and output as an electrical signal, and the input electrical signal is converted to an optical signal and output as an optical signal. If it is output as . An optical signal conversion device with a bypass function, characterized in that one of the above two cases is automatically selected and operated.