# US 12,015,448 B1 · Fast frequency multiplexed optical network channel identification > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,448 B1 - Document ID: US12015448B1 - Status: Granted - Kind: B1 - Application number: 17/211,558 - Filed: 2021-03-24 - Granted: 2024-06-18 - Earliest claimed: 2021-01-13 - Assignees: VeEX Inc. - Applicants: VeEX Inc. - Inventors: Paul Chang - Web page: https://patentgrep.com/patent/US12015448B1 ## CPC - H04B 10/572: Wavelength control - H04B 10/07955: {Monitoring or measuring power} - H04B 10/6166: {Polarisation demultiplexing, tracking or alignment of orthogonal polarisation components} - H04J 14/02: Wavelength-division multiplex systems - H04J 14/0221: {Power control, e.g. to keep the total optical power constant} - H04J 14/0227: {Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation} - H04B: TRANSMISSION - 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 A system comprising a generator and a receiver. The generator can be coupled to an optical network. The generator can be configured to generate a plurality of wavelengths of light. The plurality of wavelengths of light can be continuously cycled. The plurality of wavelengths of light can be modulated to encode information onto the plurality of wavelengths of light. The plurality of wavelengths of light can be multiplexed into a multiplexed light signal. The multiplexed light signal can be provided to a first wavelength division multiplexer of the optical network. The receiver can be coupled to the generator and the optical network. The receiver can be configured to receive a demultiplexed wavelength of light from a second wavelength division multiplexer of the optical network. The demultiplexed wavelength of light can be demodulated to decode information encoded onto the demultiplexed wavelength of light. Optical power of the demultiplexed wavelength of light can be measured. The decoded information and the optical power can be provided for display through an interface. ## Claims ### Claim 1 A computer-implemented method comprising: generating, by a device, a plurality of wavelengths of light; modulating, by the device, the plurality of wavelengths of light to encode information onto the plurality of wavelengths of light, wherein the information includes identification information associated with the device and optical power information associated with the plurality of wavelengths of light and the information including the identification information and the optical power information can be decoded by demodulation of the plurality of wavelengths of light; multiplexing, by the device, the plurality of wavelengths of light into a multiplexed light signal; and providing, by the device, the multiplexed light signal to a wavelength division multiplexer of an optical network. ### Claim 2 (depends on 1) The computer-implemented method of claim 1, wherein the plurality of wavelengths of light correspond to center frequencies of channels of the wavelength division multiplexer. ### Claim 3 (depends on 1) The computer-implemented method of claim 1, wherein the multiplexed light signal is provided to an express port of the wavelength division multiplexer. ### Claim 4 (depends on 1) The computer-implemented method of claim 1, wherein the information further includes frequency information associated with the plurality of wavelengths of light. ### Claim 5 (depends on 1) The computer-implemented method of claim 1, wherein the identification information associated with the device identifies the device. ### Claim 6 (depends on 1) The computer-implemented method of claim 1, wherein the information is encoded onto the multiplexed light signal based at least on one of a non-return-to-zero, pulse-amplitude modulation, phase-shift keying, or frequency-shift keying technique. ### Claim 7 (depends on 1) The computer-implemented method of claim 1, further comprising: extracting, by the device, a portion of the plurality wavelengths of light prior to the multiplexing; measuring, by the device, optical power of the portion of the plurality of wavelengths of light; and adjusting, by the device, optical power of the plurality of wavelengths of light based on the optical power of the portion of the plurality wavelengths of light. ### Claim 8 (depends on 1) The computer-implemented method of claim 1, further comprising: adjusting, by the device, the plurality of wavelengths of light to a selected optical power level prior to the multiplexing. ### Claim 9 (depends on 8) The computer-implemented method of claim 8, further comprising: extracting, by the device, a portion of the plurality wavelengths of light prior to the multiplexing; measuring, by the device, optical power of the portion of the plurality wavelengths of light; and adjusting, by the device, an optical power attenuation level of the plurality wavelengths of light based on the optical power of the portion of the plurality wavelengths of light. ### Claim 10 (depends on 1) The computer-implemented method of claim 1, wherein the information encoded onto the plurality wavelengths of light is decoded, and a determination of insertion loss associated with the optical network is made based on the information. ### Claim 11 (depends on 1) The computer-implemented method of claim 1, wherein the plurality of wavelengths of light are a portion of the wavelengths of light that are capable of being generated by the device. ### Claim 12 (depends on 1) The computer-implemented method of claim 1, wherein the plurality of wavelengths of light include at least two types of wavelengths of light that have a different wavelength, wherein a first type of wavelengths of light has a wider channel width than a second type of wavelengths of light. ### Claim 13 (depends on 12) The computer-implemented method of claim 12, wherein the plurality of wavelengths of light that are of the first type correspond to center frequencies of channels of at least one coarse wavelength division multiplexer and the plurality of wavelengths of light that are of the second type correspond to center frequencies of channels of at least one dense wavelength division multiplexer. ### Claim 14 (depends on 1) The computer-implemented method of claim 1, wherein the plurality of wavelengths of light are generated by one or more light sources. ### Claim 15 (depends on 14) The computer-implemented method of claim 14, further comprising: simultaneously generating, by the device, at least one wavelength of light of a first type and at least one wavelength of light of a second type. ### Claim 16 A computer-implemented method comprising: receiving, by a device, a demultiplexed wavelength of light from a wavelength division multiplexer of an optical network; demodulating, by the device, the demultiplexed wavelength of light to decode information encoded onto the demultiplexed wavelength of light, wherein the information includes identification information associated with the device and optical power information associated with the demultiplexed wavelength of light; measuring, by the device, optical power of the demultiplexed wavelength of light; and providing, by the device, the information and the optical power for display through an interface. ### Claim 17 (depends on 16) The computer-implemented method of claim 16, wherein the information includes at least one of frequency information associated with the demultiplexed wavelength of light, optical power information associated with the demultiplexed wavelength of light measured at a transmitting end of the optical network, or identification information associated with a generator from which the demultiplexed wavelength of light was generated. ### Claim 18 (depends on 16) The computer-implemented method of claim 16, further comprising: determining, by the device, insertion loss associated with the optical network based on the information and the optical power; and providing, by the device, the insertion loss for display through the interface. ### Claim 19 (depends on 16) The computer-implemented method of claim 16, wherein the demultiplexed wavelength of light is demultiplexed from a multiplexed light signal generated by a generator at a transmitting end of the optical network through the wavelength division multiplexer. ### Claim 20 A system comprising: a generator, coupled to an optical network, comprising: a light source configured to generate a plurality of wavelengths of light; an optical signal modulator, coupled to the light source, configured to modulate the plurality of wavelengths of light to encode information onto the plurality of wavelengths of light, wherein the information includes identification information associated with the generator and optical power information associated with the plurality of wavelengths of light; an optical multiplexer, coupled to the optical signal modulator, configured to multiplex the plurality of wavelengths of light into a multiplexed light signal; a power supply, coupled to the light source, configured to provide power to the light source; and one or more first processors, coupled to the power supply and the optical signal modulator, configured to control the power supply and the optical signal modulator; and a receiver, coupled to the generator and the optical network, comprising: an optical signal demodulator configured to receive a demultiplexed wavelength of light through the optical network and decode information encoded onto the demultiplexed wavelength of light based on demodulation of the demultiplexed wavelength of light, wherein the demultiplexed wavelength of light is associated with the multiplexed light signal; an optical power meter, coupled to the optical signal demodulator, configured to measure optical power of the demultiplexed wavelength of light; and one or more second processors, coupled to the optical signal demodulator and the optical power meter, configured to provide the decoded information and the optical power for display through an interface.