{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10509295","patent":{"patent_number":"US-10509295","title":"Bias control of optical modulators","assignee":null,"inventors":[],"filing_date":"2017-03-15T00:00:00.000Z","publication_date":"2019-12-17T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","H04B"],"num_claims":8,"abstract":"An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator using a phase sensitive dither detector such as a lock-in amplifier. The detected signal is processed using pre-recorded information defining the direction of the detected signal change relative to a change in the modulator bias, and the bias is adjusted in the direction determined using the information. An IQ bias of a quadrature modulator is controlled by dithering bias settings of two inner modulators at different dither frequencies, and detecting an oscillation at a sum frequency."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Bias control of optical modulators","description":"An optical waveguide modulator with automatic bias control is disclosed. A dither signal is applied to the modulator bias and its signature detected in light tapped from an output of the modulator usi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10509295","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-10509295","citation_suggestion":"Patentable. \"Bias control of optical modulators\" (US-10509295). https://patentable.app/patents/US-10509295","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10509295","json":"https://patentable.app/api/llm-context/US-10509295","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:39:12.513Z"}