Detection device and method for detecting isolation degree and input optical loss indexes of filter plate

Abstract

The present invention relates to the field of optical communication, and provides a detection device and a method for detecting the isolation degree and input optical loss indexes of a filter plate. The device comprises a base, a vertical plate perpendicular to the base and installed on the base, a Z-axis displacement platform installed on the vertical plate, a photoelectric detector installed on the Z-axis displacement platform, a filter plate placement platform installed on the vertical plate and located below the Z-axis displacement platform, an XY-axis displacement platform installed on the base, a support column installed on the XY-axis displacement platform and used for fixing a collimator, a light source in optical fiber connection with the collimator, a current measuring module electrically connected with the photoelectric detector, the collimator arranged below the filter plate placement platform, and a controller. According to the technical scheme of the invention, the test on the isolation degree and input optical loss indexes of the filter plate can be realized. Compared with the prior art, the test time is significantly reduced, and the investment cost is reduced. Meanwhile, the batch test is easily realized.

Description

technical field [0001] The invention belongs to the field of optical communication, and in particular relates to a detection device and method for an isolation degree of a filter plate and an input light loss index. Background technique [0002] With the development of optical communication technology, the application of multi-band technology is becoming more and more common. Multi-band technology needs to divide more bands within a limited wavelength range to transmit information. The performance requirements of the filter are higher. As there are more and more types of filters in the cavity, the isolation between bands and the input optical loss index are becoming more and more important. Because the higher the isolation, the smaller the input optical loss, so the BOSA The better the indicator, so the isolation and input optical loss of the filter are common test indicators of BOSA. [0003] At present, the industry generally uses spectrum analyzers to perform band scanni...

AI Technical Summary

Problems solved by technology

[0004] The above test method has the following disadvantages: First, the isolation degree and input optical loss index of the filter can only be tested for a large piece, and every small piece cannot be tested, and the overall quality of the filter cannot be guaranteed.

Second, the test time per piece is long, the efficiency is low, and the labor cost per piece is high

Third, the cost of the required equipment is very high, and it is not easy to achieve batch testing

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