HIGH-PERFORMANCE OPTICAL MEASUREMENT EQUIPMENT AND SYSTEM SOLUTION

On the OPCB substrate, the signal is transmitted through the conversion of electric signal – optical signal – electric signal between light emitting device and light receiving device mounted on the substrate that forms optical waveguide. Therefore it is mandatory to test optical continuity on optical waveguide.

We have developed new technology to incident one-shot stable and uniform irradiation at wide measurement area so that perform highspeed and high-accuracy optical continuity test without optical fiber alignment technology.

Our new technology does not require sub-micron-order precise positioning like conventional optical fiber alignment so that it is possible to incident uniform light rapidly into multi-channel polymer optical waveguide. Captured light should be detected as image signal by high resolution and high dynamic range imaging detector. Only propagation optical intensity signal from optical waveguide shall be extracted and processed with proprietary software having special image processing algorithm. This technology makes it possible for high speed and high-accuracy continuity test on each channel of polymer optical waveguide for OPCB substrate.

This is the automatic mechanism for separate waveguide module to set the measurement station in line precisely from sample tray, and collect it from measurement station to sample trey after continuity test.

Normally, in case of testing separate waveguide module, inspector has to set samples in line precisely onto the measurement holder by hand. This preparation process requires extra time for mass production testing for polymer optical waveguide module. By making this process automatic by robot, testing process and time for separate waveguide module is improved efficiently.

Separate waveguide samples under test, set onto the sample tray, are adsorbed by robot arm. Samples are set in line precisely onto the measurement station by robot, through automatic image processing and high precision positioning and adjustment technology.

After testing, samples under test are collected from measurement station to sample tray. In this time, it is possible to collect NG (fail-judged) samples to the sample tray for NG (fail-judged) sample.

Toward waveguide samples set in line precisely onto the measurement station by automatic loading/unloading system, high speed continuity test and pass/fail judgement is executed.

In this way, in combination with high speed continuity testing by our optical continuity test system and automatic sample loading/unloading system, mass production testing of polymer waveguide modules for OPCB substrate will be realized.

About measurement items, the same test and measurement items as optical continuity tester, such as continuity test, defocusing test, core position and pitch measurement, can be built in.