Recall this from Rainers Blog back in early June 2016,
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Anyone who wants to photonically detect something, therefore need appropriate illumination, depending on the particular application. With the DenseLight products, POET is offering various types of special light sources based on the semiconductor material indium phosphide (InP), in Particularsuper luminescent diodes and various types of lasers. In my opinion combining these light sources with the POET photodetector could be exciting. POET wants to bring the market to the end of the year. Its responsiveness is about 2,000 percent higher than other commercially available products.'
