Loss testing apparatus for multi-channel optical device

Abstract

The invention discloses a loss testing apparatus for a multi-channel optical device, which comprises an optical source module used for supplying laser of various wavelengths and stable power, an optical amplifying module used for amplifying an optical source for a return loss test and equally dividing the optical source into a plurality of channels, an optical power detecting module used for measuring the optical power and the return loss of an output end of the optical device to be measured, a polarization controller used for changing the polarization state of an input optical source, an optical source monitoring module used for detecting the stability of the optical source and testing the return loss of a public end of the device, an optical switch used for selecting one output in the laser of various wavelengths, a single chip computer and a communication module used for controlling a switching channel of the optical switch, wherein the polarization controller is used for changing the polarization state of the laser, receiving the data measured by the optical power detecting module and the optical source monitoring module and processing the data. By adopting the loss testing apparatus provided by the invention, the testing efficiency of various indexes for the multi-channel optical device can be increased to large extent.

Description

technical field [0001] The invention relates to a loss testing device of an optical device, in particular to a loss testing device of a multi-channel optical device. Background technique [0002] Wavelength division multiplexer / demultiplexer and optical power splitter are widely used optical devices in the optical communication market. The feature of this type of device is that the common end is one port, and the other end has N ports, N is greater than 2, generally more than 16 channels. Each manufacturer needs to test various indicators of the device during the production process. Among them, the insertion loss, polarization-dependent loss, and return loss of optical devices are several items that must be tested. [0003] The insertion loss test of the optical device is calculated by inputting the light source from one end of the optical device, passing through the optical path of the optical device, and detecting the drop value of the light intensity from the other end r...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the time-consuming and labor-intensive defects of the multi-channel optical device testing device in the prior art, which has a single function and measures device insertion loss, polarization loss, and return loss of each channel. , providing a loss testing device for a multi-channel optical device capable of simultaneously performing insertion loss testing, polarization-dependent loss testing, and return loss testing for each channel of the multi-channel optical device

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