{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10488229","patent":{"patent_number":"US-10488229","title":"Double frequency conversion apparatus for sourcing radiations having an intrinsically stable wavelength-shift that is quickly tuneable within an extended range, in particular for use in Brillouin analysers","assignee":null,"inventors":[],"filing_date":"2016-04-19T00:00:00.000Z","publication_date":"2019-11-26T00:00:00.000Z","cpc_codes":["G01D"],"num_claims":8,"abstract":"Apparatus for producing and sourcing two lightwaves having a wavelength-shift known and controllable and suitable to be used as “pump” and “probe” in a stimulated Brillouin analyser in which part of the radiation of frequency f0 from a primary source (70) is first shifted of a frequency Δf1 typically from 200 to 1000 MHz lower than the Brillouin shift ΔfB,SNS in the sensor, by a first frequency conversion system comprising a Brillouin ring laser (105) and then is shifted of a frequency Δf2 in order to fall inside the Brillouin gain band of the sensor through a further tuneable frequency conversion system (105, 106, 107) in which at least one electro-optical modulator generates modulation side bands (117, 119) of frequency (f0−Δf1+Δf2) and (f0<Δf1−Δf2), only one of which can fall within a Brillouin gain band of the sensor. The apparatus possibly comprises also a feedback stabilization system that acts on Δf2 depending on changes in the value of Δf1 in order to stabilise at least one between |Δf1+Δf2| and |Δf1−Δf2|. The apparatus solves the following problems of known solutions: wavelength-shift stability and accuracy, wavelength agility, width of the wavelength-shift tuning range, power consumption, tuning speed and industrial cost."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Double frequency conversion apparatus for sourcing radiations having an intrinsically stable wavelength-shift that is quickly tuneable within an extended range, in particular for use in Brillouin analysers","description":"Apparatus for producing and sourcing two lightwaves having a wavelength-shift known and controllable and suitable to be used as “pump” and “probe” in a stimulated Brillouin analyser in which part of t","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10488229","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-10488229","citation_suggestion":"Patentable. \"Double frequency conversion apparatus for sourcing radiations having an intrinsically stable wavelength-shift that is quickly tuneable within an extended range, in particular for use in Brillouin analysers\" (US-10488229). https://patentable.app/patents/US-10488229","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10488229","json":"https://patentable.app/api/llm-context/US-10488229","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:42:28.660Z"}