{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9847831","patent":{"patent_number":"US-9847831","title":"Dual wavelenth optical time domain reflectometer systems and methods embedded in a WDM system","assignee":null,"inventors":[],"filing_date":"2016-04-08T00:00:00.000Z","publication_date":"2017-12-19T00:00:00.000Z","cpc_codes":["H04B","H04B","H04J","H04Q","H04Q"],"num_claims":17,"abstract":"A dual wavelength Optical Time Domain Reflectometer (OTDR) system, embedded in a network element, includes a first OTDR source for wavelength λ1; a second OTDR source for wavelength λ2; an OTDR measurement subsystem adapted to measure backscatter signals λ1_BACK, λ2_BACK associated with the wavelength λ1 and the wavelength λ2; and one or more ports connecting the first OTDR source, the second OTDR source, and the OTDR measurement subsystem to one or more fiber pairs; wherein wavelength λ1 and wavelength λ2 are each outside of one or more signal bands with traffic-bearing channels, thereby enabling operation in-service with the traffic-bearing channels."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Dual wavelenth optical time domain reflectometer systems and methods embedded in a WDM system","description":"A dual wavelength Optical Time Domain Reflectometer (OTDR) system, embedded in a network element, includes a first OTDR source for wavelength λ1; a second OTDR source for wavelength λ2; an OTDR measur","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9847831","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-9847831","citation_suggestion":"Patentable. \"Dual wavelenth optical time domain reflectometer systems and methods embedded in a WDM system\" (US-9847831). https://patentable.app/patents/US-9847831","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9847831","json":"https://patentable.app/api/llm-context/US-9847831","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:21:49.639Z"}