In this paper a new sensitivity record for uncoded transmission with 2.6 photons per bit (4.15 dB) is presented. This is achieved using four dimensional (4-D) stacked orthogonal modulation formats i.e. PS-QPSK-64PPM.
© 2013 Optical Society of America
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
Login to access OSA Member Subscription