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Compact bulk optical 90° hybrid for balanced phase diversity receivers

1989; Institution of Engineering and Technology; Volume: 25; Issue: 22 Linguagem: Inglês

10.1049/el

1350-911X

R. Langenhorst, G. Wenke,

Optical Network Technologies

We describe a compact and stable bulk optical 90° hybrid offering advantages as compared to fibre-optic realisations. The excess loss of the pigtailed hybrid is only 2.0dB. The proper hybrid function has been proved in a self-heterodyne measurement set-up.