Simple polarisation-independent optical circulator for optical transmission systems |
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| Authors: | Hidetoshi Iwamura Hiroshi Iwasaki Kenichi Kubodera Yasuhiro Torii Juichi Noda |
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| Affiliation: | NTT, Musashino Electrical Communication Laboratory, Musashino, Japan; |
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| Abstract: | A simple polarisation-independent optical circulator has been developed. The circulator consists of a 45°Y3Fe5O12 rotator and a quartz rotator and two polarising beam-splitting cubes. Measured insertion loss was about 1.3 dB at 1.32 ?m wavelength. The circulator was connected to graded-index multimode fibres using rod lenses. |
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