DESIGN AND ANALYSIS OF OPTICAL SWITCH FOR DATA CENTER NETWORKS INCORPORATING ACO-OFDM WITH PAPR REDUCTION

Abstract

Currently optical data centers heavily rely on electronics for information transfer. In near future electronic switching will face problem in supporting higher data rates. Therefore, a slow migration from electronic to optical switching has been observed. In the notable switch designs, AWG is preferred due to its wavelength routed switching and cyclic nature. However, these devices require expensive TWCs for wavelengths conversions. In data centers, these optical switches can be used to connect racks. To avoid costly TWCs, we can employ OFDM along with AWG for the switching of information. This paper discusses an ACOOFDM and AWG based optical switch where information from any input can be routed to any output. The problem of PAPR is also discussed and it is suggested that using clipping in addition to µ-Law can reduced PAPR significantly.

Keywords

• ACO-OFDM
• AWG
• Optical switching
• PAPR
• TWC.