{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9851505","patent":{"patent_number":"US-9851505","title":"Substrate-type optical waveguide element","assignee":null,"inventors":[],"filing_date":"2017-03-02T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["G02F","H04J","G02F"],"num_claims":19,"abstract":"Provided is a substrate-type optical waveguide element in which when (i) effective refractive indexes of a TE polarized wave and a TM polarized wave in the first core are NTE@WG1 and NTM@WG1, respectively, and (ii) effective refractive indexes of a TE polarized wave and a TM polarized wave in the second core are NTE@WG2 and NTM@WG2, respectively, a magnitude relation of the effective refractive indexes NTM@WG1 and NTM@WG2 at a start position of a parallel-core section is opposite to a magnitude relation of the effective refractive indexes NTM@WG1 and NTM@WG2 at an end position of the parallel-core section, and at least one of the cores includes (a) a main part having a quadrilateral cross section and (b) a protruding part protruding from one of side surfaces of the main part in a direction parallel to a boundary surface between a lower cladding and a upper cladding."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Substrate-type optical waveguide element","description":"Provided is a substrate-type optical waveguide element in which when (i) effective refractive indexes of a TE polarized wave and a TM polarized wave in the first core are NTE@WG1 and NTM@WG1, respecti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9851505","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-9851505","citation_suggestion":"Patentable. \"Substrate-type optical waveguide element\" (US-9851505). https://patentable.app/patents/US-9851505","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9851505","json":"https://patentable.app/api/llm-context/US-9851505","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:35:19.134Z"}