{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509613","patent":{"patent_number":"US-8509613","title":"Monitoring of optical transmission systems based on cross-correlation operation","assignee":null,"inventors":[],"filing_date":"2008-04-14T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["H04B"],"num_claims":13,"abstract":"In optical communication systems, an optical signal which is modulated with a data signal is transmitted from an optical transmitter, and is launched into a fiber-optic transmission link. The present invention provides a method and an apparatus for the measurement of the distribution of the reflectivity along an optical transmission line implemented by using the signal processing based on the cross-correlation function between the data signal with which the optical transmitter is modulated and the back-reflected signal returned to the optical transmitter to provide the in-service monitoring of the fiber-optic transmission link."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Monitoring of optical transmission systems based on cross-correlation operation","description":"In optical communication systems, an optical signal which is modulated with a data signal is transmitted from an optical transmitter, and is launched into a fiber-optic transmission link. The present ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509613","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-8509613","citation_suggestion":"Patentable. \"Monitoring of optical transmission systems based on cross-correlation operation\" (US-8509613). https://patentable.app/patents/US-8509613","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509613","json":"https://patentable.app/api/llm-context/US-8509613","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:58:46.888Z"}