Narrow Band Optical Channel-Dropping Filter

Hermann A. Haus, Yin-Chieh Lai

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


Waveguide couplers are combined with λ/4 shifted distributed feedback resonators to produce Narrow Band channel dropping filters. With distributed feedback coupling parameters already realized today, one may construct banks of 40 channel-droppping filters with 10-GHz bandwidths each that do not mutually interfere. Each stage may also inject its own signal or reinject the tapped signal so that other stages can pick it up.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalJournal of Lightwave Technology
Issue number1
StatePublished - 1 Jan 1992

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