{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9692519","patent":{"patent_number":"US-9692519","title":"Level spacing for M-PAM optical systems with coherent detection","assignee":null,"inventors":[],"filing_date":"2016-06-03T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04J"],"num_claims":13,"abstract":"An apparatus includes an optical transmitter configured to provide an optical signal amplitude-modulated among M different levels. A constellation control module is configured to provide a drive signal to control the optical signal. A feedback module is configured to receive a measure of spacing between amplitude peaks of a symbol constellation of the optical signal. The feedback module is further configured to regulate the constellation control module to adjust the optical signal in response to the measure of spacing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Level spacing for M-PAM optical systems with coherent detection","description":"An apparatus includes an optical transmitter configured to provide an optical signal amplitude-modulated among M different levels. A constellation control module is configured to provide a drive signa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9692519","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-9692519","citation_suggestion":"Patentable. \"Level spacing for M-PAM optical systems with coherent detection\" (US-9692519). https://patentable.app/patents/US-9692519","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9692519","json":"https://patentable.app/api/llm-context/US-9692519","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:40:33.577Z"}