{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9768899","patent":{"patent_number":"US-9768899","title":"Optical add/drop multiplexer branching unit","assignee":null,"inventors":[],"filing_date":"2016-06-24T00:00:00.000Z","publication_date":"2017-09-19T00:00:00.000Z","cpc_codes":["H04J","H04B","H04B","H04J","H04J","H04Q","H04J","H04J","H04Q","H04Q"],"num_claims":10,"abstract":"An optical add/drop multiplexer branching apparatus is provided in the embodiments of the present invention, where the optical add/drop multiplexer branching unit includes: a trunk input end, a branch input end, a trunk output end, a branch output end, an optical add/drop multiplexer, a first coupler, a first detection circuit, and a control circuit, where the optical add/drop multiplexer includes an optical switch. A detection circuit detects whether a fault occurs in a trunk, and in a case in which a fault occurs in the trunk, a working mode is switched from a first working mode to a second working mode, to implement automatic redundancy on the trunk and ensure normal communication on a branch."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical add/drop multiplexer branching unit","description":"An optical add/drop multiplexer branching apparatus is provided in the embodiments of the present invention, where the optical add/drop multiplexer branching unit includes: a trunk input end, a branch","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9768899","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-9768899","citation_suggestion":"Patentable. \"Optical add/drop multiplexer branching unit\" (US-9768899). https://patentable.app/patents/US-9768899","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9768899","json":"https://patentable.app/api/llm-context/US-9768899","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:54:54.811Z"}