{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10491293","patent":{"patent_number":"US-10491293","title":"Protection apparatus for a bidirection optical link","assignee":null,"inventors":[],"filing_date":"2016-02-01T00:00:00.000Z","publication_date":"2019-11-26T00:00:00.000Z","cpc_codes":["H04B","H04J","H04J","H04Q","H04Q","H04Q"],"num_claims":16,"abstract":"According to embodiments of the present disclosure, apparatus is provided for protecting an optical link arranged to carry upstream optical signals and downstream optical signals. The apparatus comprises a first detector arranged to selectively detect a downstream optical signal received at a second port having a first wavelength and a second detector arranged to selectively detect a downstream optical signal received at the second port having a second wavelength different from the first wavelength. The apparatus further comprises control circuitry arranged to cause a protection switch to selectively couple a third port to the second port instead of to the first port based on the detecting by the first detector and the second detector. Also provided is a second apparatus for protecting the optical link. The second apparatus comprises a bypass element arranged to selectively direct at least a portion of an upstream optical signal at the first wavelength, received at a fourth port, such that a downstream optical signal at the first wavelength is transmitted from a fifth port."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Protection apparatus for a bidirection optical link","description":"According to embodiments of the present disclosure, apparatus is provided for protecting an optical link arranged to carry upstream optical signals and downstream optical signals. The apparatus compri","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10491293","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-10491293","citation_suggestion":"Patentable. \"Protection apparatus for a bidirection optical link\" (US-10491293). https://patentable.app/patents/US-10491293","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10491293","json":"https://patentable.app/api/llm-context/US-10491293","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:03:18.022Z"}