Method and device for setting up and operating a modular, highly scalable, very simple, cost-efficient and enduring transparent optically routed network for network capacities of greater than 1 Petabit/s

A network system having a modular construction, comprising:

• a quasi passive Optical Transport Network (OTN) core network with N network nodes at the core network edge;
• and
• at least one transceiver in each network node at the core network edge comprising digital signal processors (DSPs) configured to compensate for disturbing influences with respect to glass fiber transmission;
• wherein the network system is scalable by changing or replacing components in the network nodes at the core network edge while the quasi passive OTN core network is substantially unchanged;
• wherein the quasi passive OTN core network comprises at least one of the following passive optical components:
• glass fibers, optical in-line amplifiers (OLAs), and at least one arrayed waveguide grating (AWG);
• wherein the quasi passive OTN core network is configured as a star network, and wherein the at least one AWG is installed in a star point of the star network.

A method for a modular optically routed transport network, the method comprising:

• providing a quasi passive Optical Transport Network (OTN) core network according to ITU-T G.709 with N network nodes at the core network edge;
• providing at least one active component in each network node at the core network edge for the transmission of data over the quasi passive OTN core network, wherein the at least one active component in each network node at the core network edge includes an optical transceiver comprising digital signal processors (DSPs) configured to compensate for disturbing influences with respect to glass fiber transmission;
• and
• changing at least one active component in at least one network node at the core network edge, for scaling the modular optically routed transport network while the quasi passive OTN core network remains substantially unchanged;
• wherein all optical paths between the network nodes at the core network edge are configured to be supervised independently of each other, monitored independently of each other, or supervised and monitored independently of each other.

A method for a modular optically routed transport network, the method comprising:

• providing a quasi passive Optical Transport Network (TN) core network according to ITU-T G.709 with N network nodes at the core network edge;
• providing at least one active component in each network node at the core network edge for the transmission of data over the quasi passive OTN core network, wherein the at least one active component in each network node at the core network edge includes an optical transceiver comprising digital signal processors (DSPs) configured to compensate for disturbing influences with respect to glass fiber transmission;
• and
• changing at least one active component in at least one network node at the core network edge, for scaling the modular optically routed transport network while the quasi passive OTN core network remains substantially unchanged;
• wherein the quasi passive OTN core network is extended by a second, redundant sub-core network.