{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9634768","patent":{"patent_number":"US-9634768","title":"Optical communication device and method of controlling optical modulator","assignee":null,"inventors":[],"filing_date":"2015-07-29T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["H04B"],"num_claims":9,"abstract":"An optical communication device has a Mach-Zehnder optical modulator; a monitor configured to monitor a modulated light output from the optical modulator; a first controller configured to set a substrate bias voltage or an amplitude of a drive signal applied to the first waveguide of a waveguide pair of the optical modulator to a desired level that provides a first modulation index; and a second controller configured to control a substrate bias voltage or an amplitude of the drive signal applied to the second waveguide of the waveguide pair based upon an output signal from the monitor such that a second modulation index for the second waveguide becomes the same or closer to the first modulation index set for the first waveguide."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical communication device and method of controlling optical modulator","description":"An optical communication device has a Mach-Zehnder optical modulator; a monitor configured to monitor a modulated light output from the optical modulator; a first controller configured to set a substr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9634768","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-9634768","citation_suggestion":"Patentable. \"Optical communication device and method of controlling optical modulator\" (US-9634768). https://patentable.app/patents/US-9634768","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9634768","json":"https://patentable.app/api/llm-context/US-9634768","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:16:21.917Z"}