{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8503881","patent":{"patent_number":"US-8503881","title":"Systems for extending WDM transmission into the O-band","assignee":null,"inventors":[],"filing_date":"2008-04-03T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["H04B","H04B","H04J","H04J","H04J"],"num_claims":8,"abstract":"Method, apparatus and systems for a wavelength division multiplexing system operating at O-Band. The system includes a transmitter for wavelength division multiplexing digital O-band optical channels into a multiplexed optical signal, amplifying and transmitting the multiplexed optical signal, a fiber transmission span using constant intensity modulation and semiconductor optical amplification, and a receiver for receiving and amplifying the transmitted multiplexed optical signal and restoring the individual digital O-band optical signals. In an embodiment, the transmission span is a single mode fiber transmission span and in another embodiment includes an optical amplifier module coupled into the fiber transmission span. In another embodiment, the transmission span includes a length of O-band dispersion compensating fiber to reduce four-wave mixing. In another embodiment the system uses wavelength division multiplexing in combination with polarization interleaving. In another embodiment, the wavelength division multiplexing system operates at both O-Band and C-Band."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems for extending WDM transmission into the O-band","description":"Method, apparatus and systems for a wavelength division multiplexing system operating at O-Band. The system includes a transmitter for wavelength division multiplexing digital O-band optical channels ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8503881","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-8503881","citation_suggestion":"Patentable. \"Systems for extending WDM transmission into the O-band\" (US-8503881). https://patentable.app/patents/US-8503881","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8503881","json":"https://patentable.app/api/llm-context/US-8503881","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:37:36.253Z"}