Patent ID: 9143234
Filing Date: 2015-09-22
Classification: H04B,H04J,H04L

Abstract:
1. A communication system, comprising: multiple optical fibers; a communication hub comprising a laser that is optically coupled to a first end of the optical fibers and is operable to transmit unmodulated light, and further comprising a laser that is optically coupled to the first end of the optical fibers and is operable to transmit optical communications for downstream nodes, wherein the unmodulated light and the optical communications are transmitted across different optical fibers; and a communication node comprising an optical modulator optically coupled to a second end of the optical fibers, wherein the optical modulator is operable to receive a signal, to modulate the unmodulated light with the signal, and to propagate the modulated light, the optical communications, and the unmodulated light to another communication node, wherein each of the modulated light, the optical communications, and the unmodulated light are propagated to the other communication node via a different optical fiber, wherein the communication hub, the communication node, and the other communication node are arranged in a fiber loop, and wherein the modulated light comprises communications directed to the communication hub.