| l Metal package................................................................................... Hamamatsu InGaAs PIN photodiodes are available in various active area size ^0.04 to '■• '* $5 mm). TE-cooled type is also provided. ^ l Metal package with ball lens.................................................................. This InGaAs PIN photodiode is encapsulated in a metal package with a ball lens that allows efficient coupling to an optical fiber. 1 i Surface mount type ................................................ I These InGaAs PIN photodiodes are assembled on a small ceramic base originally developed for laser diode monitoring. £ + */ '/ |