{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10511437","patent":{"patent_number":"US-10511437","title":"Fast polarization encoding using electrooptical phase modulator","assignee":null,"inventors":[],"filing_date":"2017-10-05T00:00:00.000Z","publication_date":"2019-12-17T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04B"],"num_claims":11,"abstract":"Quantum key distribution device includes a transmitter, including a light source, a first polarization controller, a phase modulator and an optical attenuator, all connected in series using a first optical fiber; a receiver, including a second polarization controller, a second phase modulator, a third polarization controller, a beamsplitter, and two single photon detectors, all connected in series using a second optical fiber; and a communication channel providing a light path from the transmitter to the receiver. The first and/or second optical fiber is a polarization maintaining fiber. The first and second phase modulators are actively controlled Pockels cell crystals, lithium niobate crystals or gallium arsenide crystals. The polarization controllers include a piezo-driven fiber compression device, a Pockels cell controller, a piezo-driven fiber twist device, or a non-linear optical crystal. The first and third polarization controllers use a λ/2 plate, or 45° fiber splice polarizer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Fast polarization encoding using electrooptical phase modulator","description":"Quantum key distribution device includes a transmitter, including a light source, a first polarization controller, a phase modulator and an optical attenuator, all connected in series using a first op","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10511437","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-10511437","citation_suggestion":"Patentable. \"Fast polarization encoding using electrooptical phase modulator\" (US-10511437). https://patentable.app/patents/US-10511437","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10511437","json":"https://patentable.app/api/llm-context/US-10511437","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T11:55:22.070Z"}