{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11258516","patent":{"patent_number":"US-11258516","title":"Methods and apparatus for transmission of low photon density optical signals","assignee":null,"inventors":[],"filing_date":"2020-09-28T00:00:00.000Z","publication_date":"2022-02-22T00:00:00.000Z","cpc_codes":["H04B","H04B","G02F","H04B","H04B","H04B","H04B","H04B","G02F","G02F","G02F"],"num_claims":20,"abstract":"An optical transmitter and a method of producing a low-photon-density modulated optical signal are disclosed. The optical transmitter and method include an optical source configured to emit a continuous optical carrier waveform, a dilation module configured to apply a spreading code to a data payload to spread each of the plurality of symbols in time to expand the symbol duration by a dilation factor and produce a corresponding plurality of time-dilated symbols, the plurality of time-dilated symbols having a lower photon density than the plurality of symbols; a mapping module configured to map the plurality of time-dilated symbols to a modulation scheme; and a modulator configured to modulate the optical carrier waveform with the plurality of time-dilated symbols according to the modulation scheme to produce the low-photon-density modulated optical signal encoded with the plurality of time-dilated symbols corresponding to the data payload."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and apparatus for transmission of low photon density optical signals","description":"An optical transmitter and a method of producing a low-photon-density modulated optical signal are disclosed. The optical transmitter and method include an optical source configured to emit a continuo","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11258516","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-11258516","citation_suggestion":"Patentable. \"Methods and apparatus for transmission of low photon density optical signals\" (US-11258516). https://patentable.app/patents/US-11258516","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11258516","json":"https://patentable.app/api/llm-context/US-11258516","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T07:35:00.691Z"}