Patent ID: 8670670
Filing Date: 2014-03-11
Classification: H04J

Abstract:
1. An optical ring network, comprising: a number of multi-add/drop filters, each multi-add/drop filter being coupled to two other multi-add/drop filters to form a ring; and a number of terminal stations, each terminal station being associated with a different one of the multi-add/drop filters, wherein each terminal station receives information from its associated multi-add/drop filter through a single transmission medium, wherein a first one of the terminal stations associated with a first multi-add/drop filter receives information from a second different one of the terminal stations via a first direct connection in a first direction to a second multi-add/drop filter associated with the second different one of the terminal stations and sends information to a third different one of the terminal stations via a second direct connection in a second direction to a third multi-add/drop filter associated with the third different one of the terminal stations, wherein the first direction and second direction are different directions; wherein each terminal station is capable of communicating with each other terminal station simultaneously using wavelength division multiplexing and N-1wavelengths, where N is an integer greater than 1.