ʻO ka mea hana he silicon avalanche photodiode module me nā ʻāpana like ʻehā, me kahi kaapuni preamplifier i kūkulu ʻia, hiki ke hoʻonui i ka hōʻailona nāwaliwali o kēia manawa a hoʻololi iā ia i kahi puka hōʻailona uila, e ʻike ana i ke kaʻina hoʻololi "optical-electrical-signal amplification".