Integrated optical circuit and methods for its manufacturing and reconfiguring
The present invention is related to an integrated optical circuit, in particular, to an optical-field writable array, as well as to methods for its manufacturing and reconfiguring. The integrated optical circuit comprises at least one nanophotonic device and at least one photonic wire, wherein the nanophotonic device comprises a substrate equipped with at least one reception for at least one external connector, wherein the reception is coupled to at least one connector waveguide, and at least one set of nano-optic components, wherein the nano-optic component is one of a nanophotonic waveguide or a nanophotonic component, wherein the nano-photonic component is nano-optically coupled to at least one nanophotonic waveguide, wherein at least one of the nanophotonic waveguides is selectively coupleable to at least one of the connector waveguides, wherein the photonic wire connects at least one of the nanophotonic waveguides to at least one of the connector waveguides.
1. A method for manufacturing and reconfiguring an integrated optical circuit, comprising the following steps:
(a) providing a substrate, wherein the substrate is equipped with at least one reception for at least one external connector, wherein the reception is coupled to at least one connector waveguide;
(b) placing a layer of a material onto the substrate;
(c) creating within the layer of the material placed onto the substrate at least one set of nano-optic components, wherein the set of nano-optical components includes at least one nanophotonic waveguide and at least one nanophotonic component, nano-optically coupled to at least one nanophotonic waveguide, wherein at least one of the nanophotonic waveguides is selectively coupleable to at least one of the connector waveguides; and
(d) providing at least one photonic wire, wherein the photonic wire connects at least one of the connector waveguides to at least one of the nanophotonic waveguides;
wherein, after step (d), at least one of the photonic wires comprised in the integrated optical circuit is removed, and wherein at least one further photonic wire is provided in the integrated optical circuit.
2. The method according to claim 1 , wherein a nano-optical coupling of the nanophotonic component to the at least one nanophotonic waveguide is obtained by one of attaching the nanophotonic component to the at least one nanophotonic waveguide or locating the nanophotonic component in the vicinity of the at least one nanophotonic waveguide.
3. The method according to claim 1 , wherein the nanophotonic component is selected from a group comprising a ring resonator, a directional coupler, and a phase-sensitive element.
4. The method according to claim 1 , wherein at least two of the nano-optic components within the set differ with respect to at least one property, is created as the set of nano-optic components.
5. The method according to claim 1 , wherein a chain of connections from at least one input port to at least one output port is provided by using at least two photonic wires, wherein one of the photonic wires connects the connector waveguide being coupled to the input port to one of the nanophotonic waveguides, and wherein one other of the photonic wires connects the nanophotonic waveguide or a further nanophotonic waveguide being nano-optically coupled to the same nanophotonic component to the connector waveguide coupled to the output port.
6. The method according to claim 1 , wherein the photonic wire is provided by photonic wire bonding using direct-laser writing within a polymer material.
7. The method according to claim 1 , wherein the photonic wire comprises a polymer waveguide located above the substrate.
8. The method according to claim 1 , further comprising the following step:
(e) partially covering the substrate with a protection layer in a manner that the protection layer extends outside an area of the substrate where the at least two photonic wires are located.
9. The method according to claim 8 , wherein, after step (e), at least one of the photonic wires comprised in the integrated optical circuit is removed, and wherein at least one further photonic wire is provided in the integrated optical circuit.
10. The method according to claim 1 , wherein the at least one photonic wire comprises a polymer waveguide which is removed by a plasma oxidation.