Systems and methods for a multi-layer network to achieve network resource isolation among clients using the same server network, such as a VPN in a multi-layered network and interaction within the node, may include interaction between a server layer (e.g. L0 Photonic network) and the client layer (e.g. L1 network) that help the client layer (L1) gather information about the server-layer (L0) connection affinities. For example, the use of server layer (L0) connection affinities to construct Virtual Network Topologies (VNT) and/or network abstractions for customer traffic isolations in client layer (L1), the use of VNT to offer physical and/or logical network resource isolation for L1 customers, and provide L1 VPN services in a multi-layer environment.

A network element (36) includes circuitry and at least one port (72). The at least one port is coupled to an optical fabric (32) including one or more optical switches (40) that provide optical paths between the at least one port and multiple destination nodes, at predefined time slots. The circuitry is configured to hold a schedule plan (84) that specifies which of the destination nodes are accessible via the optical fabric at which of the time slots, to queue packets that are destined to the destination nodes, and to transmit the queued packets via the at least one port in accordance with the schedule plan.

A high capacity node includes a plurality of receiver sections and a plurality of transmitter sections; and an electrical switching fabric between the plurality of receiver sections and the plurality of transmitter sections, wherein each of the plurality of receiver sections and the plurality of transmitter sections interface the electrical switching fabric at a full signal level and the electrical switching fabric is configured to perform flow switching on the full signal level between respective receiver sections and transmitter sections, and wherein the plurality of receiver sections, the plurality of transmitter sections, and one or more stages of the electrical switching fabric are implemented in one or more optoelectronic integrated circuits.

A transmission apparatus includes: a plurality of first devices; and a second device configured to output a data signal shared by the plurality of first devices and respective first clock signals to each of the plurality of first devices, and to control the plurality of first devices individually based on the respective first clock signals.

An optical network system includes a master node and a plurality of optical switch nodes, allowing the number of nodes without depending on the number of wavelengths. The master node is configured to: divide a wavelength path having an arbitrary wavelength into time slots each having a predetermined time period; and allocate the time slots to each of the optical switch nodes. Each of the optical switch nodes is configured to: synchronize the time slots based on information delivered from the master node; and thereby transmit or receive a data or performs route switching.

A high capacity node includes a plurality of transceivers each with a transmitter configured to support a wavelength within a full transparent window of one or more optical fibers; and one or more optical amplifiers covering the full transparent window, wherein the one or more optical amplifiers comprise one of (i) a single ultra-wideband amplifier covering the full transparent window and (ii) a plurality of amplifiers each supporting a different band of the full transparent window.

A system includes multiple processors to communicate with one another at predefined time slots. A given processor among the processors is to (i) hold a predetermined schedule plan that specifies which of the other processors in the system are accessible to the given processor at which of the time slots, the predetermined schedule plan having been determined before receiving data for transmission from the given processors to the other processors, (ii) queue data that is destined to one or more of the other processors, and (iii) transmit the queued data in accordance with the predetermined schedule plan.

A switch module and optoelectronic switch incorporating the same. The optoelectronic switch includes an N-dimensional array of switch modules arranged in a topology in which each switch module is a member of N sub-arrays, the sub-arrays defined with reference to the coordinates of the constituent switch modules, and wherein all of the members of each sub-array are connected by an active switch, which in some embodiments may be an optical active switch or an electronic active switch.

A spectral-temporal connector interconnects a large number of nodes in a full-mesh structure. Each node connects to the spectral-temporal connector through a dual link. Signals occupying multiple spectral bands carried by a link from a node are de-multiplexed into separate spectral bands individually directed to different connector modules. Each connector module has a set temporal rotators and a set of spectral multiplexers. A temporal rotator cyclically distributes segments of each signal at each inlet of the rotator to each outlet of the rotator. Each spectral multiplexer combines signals occupying different spectral bands at outlets of the set of temporal rotators onto a respective output link. Several arrangements for time-aligning all the nodes to the connector modules are disclosed.

Systems and methods for a multi-layer network to achieve network resource isolation among clients using the same server network, such as a VPN in a multi-layered network and interaction within the node, may include interaction between a server layer (e.g. L0 Photonic network) and the client layer (e.g. L1 network) that help the client layer (L1) gather information about the server-layer (L0) connection affinities. For example, the use of server layer (L0) connection affinities to construct Virtual Network Topologies (VNT) and/or network abstractions for customer traffic isolations in client layer (L1), the use of VNT to offer physical and/or logical network resource isolation for L1 customers, and provide L1 VPN services in a multi-layer environment.