Optical Ethernet is a network that operates over optical fiber to provide Ethernet local area network(LAN) data packet access services
its bottom layer connection can be realized at any standard Ethernet rate including 10 Mbit/s
100 Mbit/s
1 Gbit/s or 10 Gbit/s. The optical Ethernet extends Ethernet technologies from LAN to metropolitan area network(MAN).It also extends the advantages of Ethernet to MAN
thus greatly reducing the network construction cost of carriers.