Multi-band reconfigurable optical add-drop multiplexer (ROADM) system

摘要

A device includes a first band coupler, a first reconfigurable optical add-drop multiplexer (ROADM), a second ROADM, and a second band coupler. The first band coupler is configured to decouple a regular band and an extended band. The first ROADM is configured to add or drop one or more frequencies in the decoupled regular band to produce a first output in the regular band. The second ROADM is configured to add or drop one or more frequencies in the decoupled extended band to produce a second output in the extended band. The second band coupler is configured to couple the first output and the second output to produce a third output occupying the regular band and the extended band.

主权项

1. A system comprising:
a first band coupler to:
decouple a regular band and an extended band, a first reconfigurable optical add-drop multiplexer (ROADM) to:
add or drop one or more frequencies in the decoupled regular band to produce a first output in the regular band; a second ROADM to:
add or drop one or more frequencies in the decoupled extended band to produce a second output in the extended band; and a second band coupler to:
couple the first output and the second output, without optically amplifying or pumping the first output or the second output, to produce a third output occupying the regular band and the extended band.