Research Article

Universal Method for Constructing Fault-Tolerant Optical Routers Using RRW

Table 2

Design features of several fault-tolerant optical routers compared to RRW-based scheme.

RoutersDefault MRsAdditional MRsTotal MRsMax. No. ON-MRs (default)Max. No. ON-MRs (backup)

RO-Uni26144012
RO-Votex24143812
FTTDOR22103223
NRFT2082845
RRW-crossbar20103012
FT-crossbar20133313
RRW-ODOR12102212
FT-ODOR12102213
RRW-Crux12102212
FT-Crux12102213
RRW-Cygnus16102612
FT-Cygnus16102613