Delay-sensitive slot allocation method minimizing switching idle time in PLZT optical switch for active optical access network

Active Optical Network (ActiON) using a conventional slot allocation method in Plumbum Lanthanum Zirconate Titanate (PLZT) optical switches was proposed. The conventional slot allocation method shortens the switching idle time, which is a product of the switching guard time and the number of switching times. However, the transmission waiting time could exceed a user's allowable delay. This paper proposes a delay-sensitive slot allocation method, which minimizes the switching idle time while considering the user's allowable delay. Numerical results show that the proposed method reduces the number of switching times by up to 88 percent when compared to the conventional method.