{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9608722","patent":{"patent_number":"US-9608722","title":"Method and apparatus for measuring quality parameters of optical transmission channel","assignee":null,"inventors":[],"filing_date":"2013-10-28T00:00:00.000Z","publication_date":"2017-03-28T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B"],"num_claims":6,"abstract":"The present invention discloses a method and an apparatus for measuring quality parameters of optical transmission channels. The apparatus comprises: a tunable optical filter for receiving an optical signal, performing wavelength or optical carrier demultiplexing on the optical signal, and out-of-band ASE noise suppression; an optical coherent receiver connected to the tunable optical filter, for performing polarization- and phase-diversity detection on the filtered optical signal and converting it into multiple lane baseband electrical signals; analog-to-digital converters for sampling and quantizing the multiple lane baseband electrical signals so as to convert the them into multiple lane digital signals; a digital signal processing module for processing the multiple lane digital signals to obtain quality parameters; and an display module for displaying the quality parameters. By the device according to an embodiment of the invention, real-time measurement of various key performance parameters of the 40 Gbps, 100 Gbps and extra-100 Gbps (for example, 200 Gbps, 400 Gbps and 1 Tbps) coherent polarization-multiplexed system is achieved simultaneously, especially the issue of real-time measurement of the in-service in-band OSNR is solved. Therefore, the network operation and maintenance are facilitated and the cost of network operation and maintenance is saved."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for measuring quality parameters of optical transmission channel","description":"The present invention discloses a method and an apparatus for measuring quality parameters of optical transmission channels. The apparatus comprises: a tunable optical filter for receiving an optical ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9608722","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-9608722","citation_suggestion":"Patentable. \"Method and apparatus for measuring quality parameters of optical transmission channel\" (US-9608722). https://patentable.app/patents/US-9608722","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9608722","json":"https://patentable.app/api/llm-context/US-9608722","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:26:24.626Z"}