Guan Tieliang, He Yuchan. Investigation of polarization-independent optical circulator[J]. Chinese Journal of Lasers, 1984, 11(4): 212
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The design and experimental results of a new polarization-independent optical circulator are reported. It consists of a polarizing splitter, a polarizing combiner, a Faraday rotator and a half-wave plate. Insertion losses of 2.8 db and isolation of 18-35 db were obtained for different polarization directions of incident light at 1.37μ/m.