Three-port beam splitters-combiners for interferometer applications

R. Schnabel, A. Bunkowski, O. Burmeister, K. Danzmann

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


We derive generic phase and amplitude coupling relations for beam splitters'combiners that couple a single port with three output ports or input ports, respectively. We apply the coupling relations to a reflection grating that serves as a coupler to a single-ended Fabry'Perot ring cavity. In the impedance-matched case such an interferometer can act as an all-reflective ring mode cleaner. It is further shown that in the highly undercoupled case almost complete separation of carrier power and phase signal from a cavity strain can be achieved.
Original languageEnglish
Pages (from-to)658-660
Number of pages3
JournalOptics Letters
Issue number5
Publication statusPublished - 03 Mar 2006
Externally publishedYes


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