{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8538279","patent":{"patent_number":"US-8538279","title":"Method and apparatus for carrier phase estimation and correction in a coherent optical system","assignee":null,"inventors":[],"filing_date":"2011-07-08T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B","H04J","H04J","H04L"],"num_claims":31,"abstract":"An apparatus comprising a nonlinear lookup unit (NL-LUU) configured to add a phase shift to a signal sample to compensate for pattern dependent phase distortion, and one or more first phase adjustment units coupled to NL-LUU and configured to remove from the signal sample a nonlinear phase error from the NL-LUU, wherein the signal sample corresponds to a received signal polarization component of a polarization multiplexed (PM) coherent signal in a PM coherent optical system."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for carrier phase estimation and correction in a coherent optical system","description":"An apparatus comprising a nonlinear lookup unit (NL-LUU) configured to add a phase shift to a signal sample to compensate for pattern dependent phase distortion, and one or more first phase adjustment","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8538279","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-8538279","citation_suggestion":"Patentable. \"Method and apparatus for carrier phase estimation and correction in a coherent optical system\" (US-8538279). https://patentable.app/patents/US-8538279","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8538279","json":"https://patentable.app/api/llm-context/US-8538279","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:58:49.446Z"}