{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10509243","patent":{"patent_number":"US-10509243","title":"Bias control of optical modulators","assignee":null,"inventors":[],"filing_date":"2017-11-13T00:00:00.000Z","publication_date":"2019-12-17T00:00:00.000Z","cpc_codes":["G02F","G02F","H04B","H04B","H04B","H04B","H04L","G02F"],"num_claims":10,"abstract":"An optical IQ 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. The IQ phase bias is controlled by dithering I and Q optical signals in quadrature to produce opposite-sign single subband modulation of output light at two different dither frequencies, and detecting an oscillation at a difference frequency using a lock-in detector."},"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 IQ 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 ph","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10509243","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-10509243","citation_suggestion":"Patentable. \"Bias control of optical modulators\" (US-10509243). https://patentable.app/patents/US-10509243","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10509243","json":"https://patentable.app/api/llm-context/US-10509243","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T09:17:10.240Z"}