{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8498542","patent":{"patent_number":"US-8498542","title":"Multi-channel optical transceiver with offset quadrature amplitude modulation","assignee":null,"inventors":[],"filing_date":"2010-01-21T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["H04J","H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04B"],"num_claims":13,"abstract":"The present disclosure provides a multi-carrier optical transmitter, receiver, transceiver, and associated methods utilizing offset quadrature amplitude modulation thereby achieving significant increases in spectral efficiency, with negligible sensitivity penalties. In an exemplary embodiment, an optical transmitter includes circuitry configured to generate a plurality of optical subcarriers, a plurality of data signals for each of the plurality of subcarriers, and a plurality of modulator circuits for each of the plurality of subcarriers, wherein each of the plurality of modulator circuits includes circuitry configured to offset an in-phase component from a quadrature component of one of the plurality data signals by one-half baud period."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Multi-channel optical transceiver with offset quadrature amplitude modulation","description":"The present disclosure provides a multi-carrier optical transmitter, receiver, transceiver, and associated methods utilizing offset quadrature amplitude modulation thereby achieving significant increa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8498542","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-8498542","citation_suggestion":"Patentable. \"Multi-channel optical transceiver with offset quadrature amplitude modulation\" (US-8498542). https://patentable.app/patents/US-8498542","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8498542","json":"https://patentable.app/api/llm-context/US-8498542","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:14:27.846Z"}