# US 12,603,720 B2 · Systems and methods for coupling optical networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,720 B2 - Document ID: US12603720B2 - Status: Granted - Kind: B2 - Application number: 18/470,366 - Filed: 2023-09-19 - Published: 2024-03-28 - Granted: 2026-04-14 - Earliest claimed: 2022-09-23 - Assignees: IP Infusion, Inc. - Applicants: IP Infusion, Inc. - Inventors: Chao Xiang Shi; Mudit Wahal; Abhijeet Prabhune; Shaji Nathan; Vinayak Kamat - Web page: https://patentgrep.com/patent/US12603720B2 ## CPC - H04J 14/0221: {Power control, e.g. to keep the total optical power constant} - H04J 14/02216: {by gain equalization} - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract The various implementations described herein include methods, devices and systems for power modulation and optical network coupling. A device includes a plurality of optical input ports and a plurality of optical output ports. The device further includes an array of power modulation components, each power modulation component coupled between a respective input port of the plurality of input ports and a corresponding output port of the plurality of output ports. The device also includes control circuitry coupled to the array of power modulation components, the control circuitry configured to: obtain power level information for the plurality of input ports; and adjust power modulation for one or more of the array of power modulation components based on the power level information such that output power levels are substantially similar. ## Claims ### Claim 1 A device, comprising: a plurality of optical input ports; a plurality of optical output ports; an array of power modulation components, each power modulation component coupled between a respective optical input port of the plurality of optical input ports and a corresponding optical output port of the plurality of optical output ports, wherein the array of power modulation components comprises an array of Erbium-doped fiber amplifier (EDFA) components; and control circuitry coupled to the array of power modulation components, the control circuitry configured to: obtain power level information for the plurality of optical input ports, including obtaining information about a highest source power level; and adjust power modulation for one or more of the array of power modulation components based on the power level information such that output power levels are substantially similar, including adjusting a gain of one or more of the array of EDFA components based on the highest source power level. ### Claim 2 (depends on 1) The device of claim 1, wherein the plurality of optical output ports are configured to couple to dense wavelength-division multiplexing (DWDM) component. ### Claim 3 (depends on 1) The device of claim 1, further comprising a control port coupled to the control circuitry and configured to couple to one or more optical source components. ### Claim 4 (depends on 1) The device of claim 1, wherein the plurality of optical input ports are configured to couple to one or more optical source components. ### Claim 5 (depends on 1) The device of claim 1, wherein the device does not include a central processing unit or an x86 processor. ### Claim 6 (depends on 1) The device of claim 1, wherein the device is configured to modulate a plurality of optical signals having differing optical characteristics. ### Claim 7 (depends on 1) The device of claim 1, wherein the array of EDFA components comprises an array of EDFA boost components. ### Claim 8 (depends on 1) The device of claim 1, wherein the plurality of optical input ports are configured to couple to a plurality of optical source components. ### Claim 9 (depends on 1) The device of claim 1, wherein the plurality of optical input ports are configured to couple to optical source components operating at different wavelengths. ### Claim 10 (depends on 1) The device of claim 1, wherein the array of power modulation components are coupled to an optical source component via a control line. ### Claim 11 (depends on 1) The device of claim 1, wherein the control line comprises a power supply line. ### Claim 12 An optical system, comprising: a plurality of optical source components; a source DWDM component; and a device coupled between at least a subset of the plurality of optical source components and the source DWDM component, the device comprising: a plurality of optical input ports; a plurality of optical output ports; an array of power modulation components, each power modulation component coupled between a respective optical input port of the plurality of optical input ports and a corresponding optical output port of the plurality of optical output ports, wherein the array of power modulation components comprises an array of Erbium-doped fiber amplifier (EDFA) components; and control circuitry coupled to the array of power modulation components, the control circuitry configured to: obtain power level information for the plurality of optical input ports, including obtaining information about a highest source power level; and adjust power modulation for one or more of the array of power modulation components based on the power level information such that output power levels are substantially similar, including adjusting a gain of one or more of the array of EDFA components based on the highest source power level. ### Claim 13 (depends on 12) The optical system of claim 12, wherein the plurality of optical source components are configured to operate at different wavelengths. ### Claim 14 (depends on 12) The optical system of claim 12, wherein the device is coupled between two or more optical networks, the two or more optical networks having different optical signal characteristics. ### Claim 15 (depends on 12) The optical system of claim 12, wherein the plurality of optical source components are configured to operate at different rates. ### Claim 16 (depends on 12) The optical system of claim 12, further comprising: a destination DWDM component; a plurality of optical destination components; and a power modulation device coupled between at least a subset of the plurality of optical destination components and the destination DWDM component, the power modulation device configured to modulate outputs of the destination DWDM component. ### Claim 17 (depends on 12) The optical system of claim 12, wherein the array of EDFA components comprises an array of EDFA boost components. ### Claim 18 (depends on 12) The optical system of claim 12, wherein the array of power modulation components are coupled to the plurality of optical source components via one or more control lines. ### Claim 19 (depends on 12) The optical system of claim 12, wherein the one or more control lines comprise a power supply line. ### Claim 20 (depends on 12) The optical system of claim 12, wherein the source DWDM component comprises a multi-channel multiplexer.