@incollection{TUW-175710, author = {Leeb, Walter and Winzer, Peter}, title = {Photodetectors and Receivers}, booktitle = {Near-Earth Laser Communications}, year = {2009}, editor = {Hemmati, Hamid}, pages = {189--236}, publisher = {Taylor and Francis/CRC Press}, address = {Boca Raton}, isbn = {978-0-8247-5381-8}, keywords = {optical communications, laser communications, optical receivers, light detection, photo detection, detection noise, optical heterodyning, optical filters, optical preamplifiers, direct detection, modulation formats, background radiation,}, note = {invited} }