{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9608736","patent":{"patent_number":"US-9608736","title":"Planar lightwave circuit and optical receiver","assignee":null,"inventors":[],"filing_date":"2012-09-13T00:00:00.000Z","publication_date":"2017-03-28T00:00:00.000Z","cpc_codes":["H04B","H04B","H04J"],"num_claims":10,"abstract":"A planar lightwave circuit and an optical receiver which reduce degradation in signal quality is provided.A planar lightwave circuit includes: a substrate with a straight groove formed therein; a signal light input port which is formed in the substrate and receives signal light; a first planar filter part which is fitted into the groove and separates the signal light into a signal light component including a first polarization state and that including a second polarization state; a second planar filter part which is fitted into the groove and separates the local oscillator light into a local oscillator light component including the first polarization state and that including the second polarization state; a first interference part formed in the substrate; a second interference part which is formed on a side of the substrate opposite to the side of the first interference part across the groove; a first waveguide which is connected to the signal light input port and also to a reflection surface of the first planar filter part; a second and a third waveguide; a fourth waveguide which is connected to the local oscillator light input port and also to a reflection surface of the second planar filter part; and a fifth and a sixth waveguide."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Planar lightwave circuit and optical receiver","description":"A planar lightwave circuit and an optical receiver which reduce degradation in signal quality is provided.A planar lightwave circuit includes: a substrate with a straight groove formed therein; a sign","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9608736","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-9608736","citation_suggestion":"Patentable. \"Planar lightwave circuit and optical receiver\" (US-9608736). https://patentable.app/patents/US-9608736","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9608736","json":"https://patentable.app/api/llm-context/US-9608736","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:46:19.587Z"}