{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9671552","patent":{"patent_number":"US-9671552","title":"9 LP-mode fiber designs for mode-division multiplexing","assignee":null,"inventors":[],"filing_date":"2016-03-30T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H04J"],"num_claims":20,"abstract":"A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 LP modes for transmission of a spatially-multiplexed optical signal and has optimized maximum differential group delay (MDGD) through a wide range of wavelengths."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"9 LP-mode fiber designs for mode-division multiplexing","description":"A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9671552","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-9671552","citation_suggestion":"Patentable. \"9 LP-mode fiber designs for mode-division multiplexing\" (US-9671552). https://patentable.app/patents/US-9671552","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9671552","json":"https://patentable.app/api/llm-context/US-9671552","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:01:17.899Z"}