{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9764352","patent":{"patent_number":"US-9764352","title":"Stress-tuned planar lightwave circuit and method therefor","assignee":null,"inventors":[],"filing_date":"2015-12-23T00:00:00.000Z","publication_date":"2017-09-19T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","G02F"],"num_claims":17,"abstract":"A planar lightwave circuit that can be optically coupled with an external device with low optical loss, while also providing low-power functional control over an optical signal propagating through the PLC is disclosed. The PLC includes a high-contrast waveguide region in a stress-inducing (SI) phase shifter is formed such that it can control the phase of the optical signal. The high-contrast-waveguide region is optically coupled to a low-contrast-waveguide region via a spotsize converter, thereby enabling optical coupling to off-chip devices with low optical loss. Formation of the SI phase shifter in a high-contrast-waveguide region enables improved responsivity and phase control, reduced voltage, and smaller required chip real estate. As a result, the present invention enables lower-cost and higher-performance PLC systems."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Stress-tuned planar lightwave circuit and method therefor","description":"A planar lightwave circuit that can be optically coupled with an external device with low optical loss, while also providing low-power functional control over an optical signal propagating through the","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9764352","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-9764352","citation_suggestion":"Patentable. \"Stress-tuned planar lightwave circuit and method therefor\" (US-9764352). https://patentable.app/patents/US-9764352","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9764352","json":"https://patentable.app/api/llm-context/US-9764352","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:27:56.088Z"}