CN209805830U

CN209805830U - Full-function optical monitoring system

Info

Publication number: CN209805830U
Application number: CN201920421442.1U
Authority: CN
Inventors: 洪亮; 沈乾; 曹迎春; 李绍研
Original assignee: SHANGHAI CHINA SCIENCES Co Ltd; ZHONGKE OPTICAL FIBER COMMUNICATION DEVICE CO Ltd SHANGHAI; SHANGHAI ZHONGKE CHUANGXIN COMMUNICATION EQUIPMENT Co Ltd
Current assignee: SHANGHAI CHINA SCIENCES Co Ltd; ZHONGKE OPTICAL FIBER COMMUNICATION DEVICE CO Ltd SHANGHAI; SHANGHAI ZHONGKE CHUANGXIN COMMUNICATION EQUIPMENT Co Ltd
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2019-12-17
Anticipated expiration: 2029-03-30

Abstract

The utility model relates to an optical communication device makes the field, specifically is full-function optical monitoring system. The device is characterized by comprising a light source module, an optical switch module and an optical detection module; the light source module comprises a wavelength division multiplexing module and a light splitter; the optical switch module comprises a pair of optical switches. The optical detection module comprises a wavelength division demultiplexing module, a series of optical detectors, a relay network and a calculation control circuit; the optical switch module and the light source module adopt a matrix type connection mode. The monitoring system adopts the structure, and has the characteristics of low manufacturing cost, high production speed and efficiency and stable quality.

Description

Full-function optical monitoring system

Technical Field

The utility model relates to an optical communication device makes the field, specifically is full-function optical monitoring system.

Background

Optical communication device manufacturers need to monitor the power and wavelength specifications of the devices on-line during their manufacture, and the monitoring emphasis is different for different types of devices, e.g., for coarse wavelength division multiplexing devices, it is often necessary to monitor the power corresponding to wavelengths of 1270nm and 1610nm, and for dense wavelength division multiplexing devices, it is often necessary to monitor wavelengths and power in the range of 1520 ~ 1570 nm.

Traditionally, the system for monitoring power is a fixed light source + a power meter, and the system for monitoring wavelength is a broadband light source + a spectrum analyzer. The latter cannot be used for on-line monitoring due to speed limitations. The two systems are also incompatible because the wavelength ranges are different and the data acquisition modes are different.

When a device manufacturer produces and manufactures, due to the limitation of the monitoring system, the monitoring mode must be switched on line according to different device types, so that the manufacturing process is differentiated, great management cost is generated, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a full function optical monitoring system, this kind of system can compatible test different types of device for the processing procedure is standardized. Meanwhile, the speed is high, automatic production can be supported, and the manufacturing cost is reduced.

In order to achieve the above object, the present invention is realized as follows:

The full-function optical monitoring system comprises a light source module, an optical switch module and an optical detection module.

The light source module comprises a wavelength division multiplexing module and a light splitter, and the light source module is used for configuring light signals in a mode of firstly combining wavelengths and then dividing power.

The optical switch module comprises a pair of optical switches, and the information of the device to be tested is collected in a mirror image layout mode.

The optical switch module and the light source module adopt a matrix type connection mode.

The optical detection module comprises a wavelength division demultiplexing module, a series of optical detectors, a relay network and a calculation control circuit.

The monitoring system adopts the structure, and has the characteristics of low manufacturing cost, high production speed and efficiency and stable quality.

drawings

FIG. 1 is a frame diagram of a light source module.

Fig. 2 is a frame diagram of an optical switch module.

FIG. 3 is a diagram of a matrix relationship between the optical switch module and the light source module.

Fig. 4 is a frame diagram of the optical detection module.

Detailed Description

As shown in fig. 1, the light source module includes a series of light sources 11, a wavelength division multiplexing module 12, and an optical splitter 13.

The light source wavelength type can be single wavelength, multi-wavelength or for a scanning type light source, and in order to ensure the synchronization with the calculation control circuit in the wavelength scanning process, a clock signal of the scanning light source needs to be connected to the calculation control circuit.

The light source module is wavelength-tunable relative to the light source type. The light source output mode may be a fixed wavelength output or a step or continuous sweep wavelength output.

For example, for a coarse wavelength division multiplexing device, 1270nm +1610nm fixed light sources are used as a light source module, and for a dense wavelength division multiplexing device, 1520 ~ 1570nm tunable light sources +1510nm +1590nm fixed light sources are used as a light source module.

The wavelength division multiplexing module 12 has input ports with operating wavelengths corresponding to the wavelengths of the light sources, respectively, and functions to combine the input wavelengths into one output port. This output port contains a number of wavelength channels substantially equal to the number of light sources to which its input ports are connected.

The output end of the wavelength division multiplexing module 12 is connected with the input end of the optical splitter 13. The optical splitter distributes the multi-wavelength optical signal to the output ports by means of power distribution. The output ports of the optical splitter 13 are the output ports of the light source modules, and the number n of the output ports of the light source modules is substantially equal to the number n of the optical switch modules.

As shown in fig. 2, the optical switch module includes a pair of optical switches. Both of which are controlled by the calculation control circuit 34. The number of channels of the optical switch can be expanded according to requirements, and generally takes the nth power of 2. The utility model discloses preferred passageway number 4. The optical switch modules are relative to the working positions, namely one working position corresponds to one optical switch module.

The optical switch 21 is used for selectively switching output signals of different light source modules and sending a required optical signal to an input end of the device under test 22. The number m of channels of the optical switch 21 is substantially equal to the number m of light source modules.

The optical switch 23 is used for receiving the optical signal at the output end of the device under test 22 and sending the signal to the optical detection module designated by the calculation control circuit 34.

As shown in fig. 3, the optical switch module and the light source module are in a matrix relationship. In combination with the foregoing description, specifically, each output port of the same light source module corresponds to a different optical switch module, whereas each input port of the same optical switch module corresponds to a different light source module.

For example, assuming that there are 4 light source types, the number of light source modules m = 4. Assuming that 10 operating positions need to be supported, the number of optical switch modules n = 10. Thus, the number of network nodes of the entire monitoring system is 4 × 10= 40.

As shown in fig. 4, the optical detection module includes a wavelength division demultiplexing module 31, a series of optical detectors 32, a relay network 33, and a calculation control circuit 34.

The optical signal at the output of the device under test typically contains multiple wavelengths. The wavelength division demultiplexing module 31 is configured to split an optical signal containing multiple wavelengths into corresponding ports, and then transmit the optical signal to a series of optical detectors 32, so as to convert the optical signal into an electrical signal.

The electrical output port of the photodetector 32 is electrically connected to the input port of the relay network 33. The relay network 33 is composed of a series of electronic switches, and under the control of the calculation control circuit 34, the electric signals to be processed are sent to the calculation control circuit.

The calculation control circuit analyzes and processes the electrical signals, calculates necessary optical parameters, and outputs the optical parameters to the test platform 35 or the adjustment platform 36 as the optical test result.

Claims

1. A full-function optical monitoring system comprises a light source module, an optical switch module and an optical detection module; the light source module comprises a wavelength division multiplexing module and a light splitter, and optical signals are configured in a mode of firstly combining wavelengths and then dividing power; the optical switch module comprises a pair of optical switches and adopts a mirror image layout mode to collect the information of the device to be tested; the optical switch module and the light source module adopt a matrix connection mode; the optical detection module comprises a wavelength division demultiplexing module, a series of optical detectors, a relay network and a calculation control circuit.