{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9787394","patent":{"patent_number":"US-9787394","title":"Method and apparatus for acoustic sensing using multiple optical pulses","assignee":null,"inventors":[],"filing_date":"2015-02-13T00:00:00.000Z","publication_date":"2017-10-10T00:00:00.000Z","cpc_codes":["H04B","G01D"],"num_claims":20,"abstract":"An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves in a pulse within a group differs from the frequency of the electromagnetic waves in another pulse within the group. The energy scattered by the medium is detected and, in one embodiment, the beat signal may be used to determine a characteristic of the environment of the medium. For example, if the medium is a buried optical fiber into which light pulses have been launched in accordance with the invention, the presence of acoustic waves within the region of the buried fiber can be detected."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for acoustic sensing using multiple optical pulses","description":"An improved technique for acoustic sensing involves, in one embodiment, launching into a medium, a plurality of groups of pulse-modulated electromagnetic-waves. The frequency of electromagnetic waves ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9787394","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-9787394","citation_suggestion":"Patentable. \"Method and apparatus for acoustic sensing using multiple optical pulses\" (US-9787394). https://patentable.app/patents/US-9787394","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9787394","json":"https://patentable.app/api/llm-context/US-9787394","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:33:12.123Z"}