{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8463121","patent":{"patent_number":"US-8463121","title":"Ultra wide-range frequency offset estimation for digital coherent optical receivers","assignee":null,"inventors":[],"filing_date":"2010-10-12T00:00:00.000Z","publication_date":"2013-06-11T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B"],"num_claims":20,"abstract":"Methods and systems for receiving an optical signal using cascaded frequency offset estimation. Coherently detecting an optical signal includes compensating for a coarse laser frequency offset between a transmitting laser and a local oscillator laser by determining a maximum phase error (MPE) in the optical signal, compensating for a residual laser frequency offset between the transmitting laser and the local oscillator laser, and decoding data stored in the optical signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Ultra wide-range frequency offset estimation for digital coherent optical receivers","description":"Methods and systems for receiving an optical signal using cascaded frequency offset estimation. Coherently detecting an optical signal includes compensating for a coarse laser frequency offset between","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8463121","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-8463121","citation_suggestion":"Patentable. \"Ultra wide-range frequency offset estimation for digital coherent optical receivers\" (US-8463121). https://patentable.app/patents/US-8463121","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8463121","json":"https://patentable.app/api/llm-context/US-8463121","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:47:40.572Z"}