Patent ID: 8190027
Filing Date: 2012-05-29
Classification: H04J,H04Q

Abstract:
1. An optical node of a network comprising: a ROADM core, which is a reconfigurable optical add drop multiplexer core device including a bidirectional network node interface configured to receive an optical signal of multiple wavelengths from the network and to transmit an optical signal of multiple wavelengths to the network; and two different types of add-on devices, each connected to the ROADM core and each configured to a) receive an optical signal from the ROADM core that contains all of the multiple wavelengths and separate the multiple wavelengths therein into single-wavelength optical signals, and b) receive other single-wavelength optical signals, and combine these other single-wavelength optical signals into an optical signal of multiple wavelengths, which is then outputted to the ROADM core.