{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11249254","patent":{"patent_number":"US-11249254","title":"Wavelength division multiplexing filter for multiplexing or demultiplexing using cascaded frequency shaping","assignee":null,"inventors":[],"filing_date":"2020-04-08T00:00:00.000Z","publication_date":"2022-02-15T00:00:00.000Z","cpc_codes":["H04B","H04B","H04J","H04J","H04J","H04B"],"num_claims":18,"abstract":"A wavelength division multiplexing filter comprises: a first multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers, and a second multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers; wherein the first multi-order Mach-Zehnder interferometer and the second multi-order Mach-Zehnder interferometer are included in a group of multiple multi-order Mach-Zehnder interferometers arranged within a binary tree arrangement, the binary tree arrangement comprising: a first set of a plurality of multi-order Mach-Zehnder interferometers, the first set including the first multi-order Mach-Zehnder interferometer, and having an associated spectral response with a first spacing between adjacent passbands, and a second set of at least twice as many multi-order Mach-Zehnder interferometers as in the first set, the second set including the second multi-order Mach-Zehnder interferometer, and having an associated spectral response with a second spacing between adjacent passbands that is twice the first spacing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Wavelength division multiplexing filter for multiplexing or demultiplexing using cascaded frequency shaping","description":"A wavelength division multiplexing filter comprises: a first multi-order Mach-Zehnder interferometer comprising a plurality of first-order Mach-Zehnder interferometers, and a second multi-order Mach-Z","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11249254","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-11249254","citation_suggestion":"Patentable. \"Wavelength division multiplexing filter for multiplexing or demultiplexing using cascaded frequency shaping\" (US-11249254). https://patentable.app/patents/US-11249254","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11249254","json":"https://patentable.app/api/llm-context/US-11249254","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:08:32.892Z"}