JPS58134596A - Switching device of optical multiplex signal - Google Patents

Abstract

PURPOSE:To switch easily plural optical multiplex signal, by switching to a switching matrix to convert and output light branched into each wavelength zone again after the light is once converted into electric signals. CONSTITUTION:Optical multiplex signals O1-On are inputted to spectroscopes S1-Sn respectively. The S1 separates the input signal into an otical signal of each wavelength zone and inputs the signals to photoelectric converters O/E1- O/E. This is the same for the S2-Sn. This output is connected a switching matrix M arbitrarily to either one of m-set of electronoptic converters E/O1- E/Om. The matrix M is a matrix of ln to m output consisted of m-set of switch circuits having ln input to one output consisted of ln-set of AND circuits. The outputs is arbitrarily combined with a signal impressed to the control input of the AND circuits. The output of the matrix M is converted into optical signals at the converters E/O1-E/Om to be synthesized, multiplexed and to transmitted to a remote terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION Misfire #4 relates to an optical signal switching device in optical wavelength division multiplexing signal transmission.

The development of optical communication technology in recent years has been remarkable, and it is possible to dramatically increase the amount of information transmitted through optical communication.
This is combined with the fact that signals can be transmitted at high speed using light of one wavelength, and that light of multiple wavelengths can be transmitted using one optical transmission path. In addition, it is possible to lay multiple optical fibers with a single cable in the transmission section of l-), and the amount of information in the transmission section achieved by thin cables is enormous. Since it is not necessary to transmit a huge amount of information such as tl between terminals that support -l to l, it is desirable to be able to arbitrarily switch and connect one wavelength of light as a unit. Conventionally, multiple light beams of different wavelengths are combined using an optical coupler and ejected into a single optical fiber, and on the receiving side, the light beams are separated into each wavelength beam using a spectrometer and then fixedly connected to each other's terminal. It is. However, in order to switch and connect to an arbitrary terminal, it is necessary to switch and connect the optical fiber for connecting the output of the spectrometer to the optical transmission path to the target terminal. That is, it is necessary to move the optical fiber mechanically, and it is not easy to arbitrarily switch to a plurality of partner terminals.

In view of the above-mentioned circumstances, an object of the present invention is to provide an optical multiplex signal switching device that can easily switch and connect optical multiplex signals.

The switching device of the present invention includes a spectrometer that inputs an optical wavelength division multiplexed signal and separates and outputs each wavelength of light, a plurality of optical/electrical converters that convert the output light of the spectrometer into electrical signals, and the plurality of A switching matrix that inputs the output signal of the optical/electrical converter and can be arbitrarily switched and connected between a plurality of human power converters and a plurality of output terminals, and a plurality of switches that convert the output signals of the switching matrix into optical signals respectively. It is characterized by being equipped with an electric/optical converter.

Next, the present invention will be explained in detail with reference to the drawings.

The figure is a block diagram showing one embodiment of the present invention. That is, optical multiplex No. 41 0. ~
0. are manually input to the spectrometers 88 to S7, respectively. The spectrometer S1 separates the optical multiplexed signal into optical signals of each wavelength band and inputs them to optical/electronic converters 0/El to 0/Et, respectively. The outputs of the 0 photo/electrical converters O/E1 to 0βL (there are AX 1), which are the same for the spectrometers S and -Sn, are arbitrarily switched and connected by the switching matrix 2, and each output is converted to one photoelectric converter as necessary. /Light condenser B10t~E10n
It is connected to one of the eaves of h. switching matrix M#i,
For example, Zs AND1gl paths (also FiNAND[gl
This is a switching matrix of An inputs and m outputs, which is constructed by a combination of 7 m human power and 1 output switch circuits t-vm. ” - AND circuit of the numeric elements! By the signal applied to the 11# input,
It is possible to output in any combination. The output of the switching matrix M is the electrical/optical transducer E101 to E10I.
Each signal is converted into an optical signal at 11, and then transmitted directly or after being excessively combined and multiplexed to the other party's terminal. In this embodiment, since signal switching is performed in the electrical signal portion, there is no need to move the optical fiber for switching connection, and it is possible to easily perform i-switching connection.

As described above, =ll11 In the present invention #'i, the light obtained by optically demultiplexing the optical multiplexed signal in each wavelength band is converted into an electrical signal,
11 Since the electrical signal part is configured to switch at any scale by switching and convert each output to light again, multiple optical multiplexed signals can be easily switched and transmitted to each destination terminal. Is possible.

This has the effect of increasing the flexibility of the optical communication network and allowing efficient use of transmission lines.

[Brief explanation of the drawing]

The figure is a boot diagram showing one embodiment of the present invention. In the figure, OI ~ OS... light, IP serious injury signal β, ~
S. ...Demultiplexer, OAJ, 1-0/E Z-, ...Optical/electrical converter, M...Switching matrix, E101-E10
Fm -...Convert to electricity/light. Agent Patent Attorney Sumi 1) Toshi So, -

Claims (1)

[Claims] A spectrometer that inputs an optical wavelength division multiplexed signal and separates and outputs light of each wavelength, a plurality of optical/electrical converters that convert the output light of the spectroscope into electrical signals, and a plurality of optical/electrical converters. a switching matrix that can arbitrarily switch and connect the output signals of the switching matrix between a plurality of input terminals and a plurality of output terminals; and a plurality of electrical/optical converters that convert and output the output signals of the switching matrix into optical signals. Optical multiplex signal switching ti, t0 characterized by comprising: