{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9749077","patent":{"patent_number":"US-9749077","title":"Controlling optical signal power levelling in an optical communication network","assignee":null,"inventors":[],"filing_date":"2013-03-12T00:00:00.000Z","publication_date":"2017-08-29T00:00:00.000Z","cpc_codes":["H04B","H04J","H04J","H04J","H04J","H04J","H04J"],"num_claims":20,"abstract":"A method (10) of controlling optical signal power levelling in an optical communication network node configured to apply an optical attenuation, α, to a pass-through optical signal. The method comprises: a. performing the following steps i. to iii. until an attenuation variation value, Δα, is greater than a preselected attenuation variation threshold value (18), ΔαTH: i. measuring (12) an optical signal power of an optical signal; ii. calculating (14) a difference, ΔP, between the measured optical signal power and a target optical signal power; iii. calculating (16) a value for the attenuation variation, Δα, to be applied to the optical attenuation taking account of ΔP; b. obtaining (20) a current value of the optical attenuation, αn, and obtaining (22) a new optical attenuation value, αn+1, in dependence on the current value of the optical attenuation, a current value of the attenuation variation, Δαn, and at least an earlier value of the attenuation variation, Δαn−1; and c. generating (24) a control signal arranged to configure the node to apply the new optical attenuation value, αn+1."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Controlling optical signal power levelling in an optical communication network","description":"A method (10) of controlling optical signal power levelling in an optical communication network node configured to apply an optical attenuation, α, to a pass-through optical signal. The method compris","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9749077","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9749077","citation_suggestion":"Patentable. \"Controlling optical signal power levelling in an optical communication network\" (US-9749077). https://patentable.app/patents/US-9749077","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9749077","json":"https://patentable.app/api/llm-context/US-9749077","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:24:28.054Z"}