{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9684131","patent":{"patent_number":"US-9684131","title":"Apparatus and method for an optical switch having a 2×1 multi-mode interferometer and photodetector","assignee":null,"inventors":[],"filing_date":"2014-04-04T00:00:00.000Z","publication_date":"2017-06-20T00:00:00.000Z","cpc_codes":["G02F"],"num_claims":20,"abstract":"Embodiments are provided for an improved 2×1 switch cell design with integrated photodiode for off-state monitoring. In an embodiment, am optical switch comprises a 2×1 multi-mode interferometer (MMI) coupler including two input waveguides jointly coupled to an output waveguide, and a photodetector coupled to an edge of a first waveguide of the input waveguides, and positioned next to a side of the output waveguide. In another embodiment, an optical chip comprises two input waveguides parallel to each other, and an output waveguide coupled to the two input waveguides. The optical chip further includes a photodetector coupled to a first waveguide of the two input waveguides, and positioned next to the output waveguide, and a branch waveguide extending from the first waveguide into the photodetector."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for an optical switch having a 2×1 multi-mode interferometer and photodetector","description":"Embodiments are provided for an improved 2×1 switch cell design with integrated photodiode for off-state monitoring. In an embodiment, am optical switch comprises a 2×1 multi-mode interferometer (MMI)","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9684131","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-9684131","citation_suggestion":"Patentable. \"Apparatus and method for an optical switch having a 2×1 multi-mode interferometer and photodetector\" (US-9684131). https://patentable.app/patents/US-9684131","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9684131","json":"https://patentable.app/api/llm-context/US-9684131","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:17:01.211Z"}