{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9729232","patent":{"patent_number":"US-9729232","title":"Method and device for estimation of chromatic dispersion in optical coherent communication","assignee":null,"inventors":[],"filing_date":"2014-05-23T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B","H04B"],"num_claims":17,"abstract":"Disclosed are a chromatic dispersion estimation method and device in optical coherent communication, wherein, the method includes: performing a fast Fourier transform on IQ-imbalance compensated data to obtain frequency-domain data in two polarization directions; calculating autocorrelation sequences of the frequency-domain data and performing an inverse fast Fourier transform on the values of the autocorrelation sequences; calculating modulus squares of the results of the inverse fast Fourier transform, and adding the results in the two polarization directions to obtain; determining a mean value of s of a plurality of data sets; calculating an index of the maximum value of, and estimating a dispersion value of the optical fiber link according to the index of the maximum value of. The abovementioned technical solution allows a significantly accurate and rapid estimation of dispersion values."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for estimation of chromatic dispersion in optical coherent communication","description":"Disclosed are a chromatic dispersion estimation method and device in optical coherent communication, wherein, the method includes: performing a fast Fourier transform on IQ-imbalance compensated data ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9729232","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-9729232","citation_suggestion":"Patentable. \"Method and device for estimation of chromatic dispersion in optical coherent communication\" (US-9729232). https://patentable.app/patents/US-9729232","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9729232","json":"https://patentable.app/api/llm-context/US-9729232","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:45:09.418Z"}