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Dual polarisation optical hybrid using silica-based planar lightwave circuit technology for digital coherent receiver

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11 Author(s)
Sakamaki, Y. ; NTT Photonics Labs., NTT Corp., Atsugi, Japan ; Yamazaki, H. ; Mizuno, T. ; Goh, T.
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Described is a compact dual polarisation optical hybrid (DPOH) that has been achieved by integrating polarisation beam splitters and 90??-hybrids fabricated with silica-based planar lightwave circuit technology. The fabricated DPOH worked completely passively without any adjustments and its optical characteristics were sufficient for the coherent detection of 111??Gbit/s DPQPSK signals.

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Electronics Letters  (Volume:46 ,  Issue: 1 )