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Comment on "Linear and passive silicon optical isolator" in Scientific Reports 2, 674

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arxiv 1301.7243 v1 pith:I3M2NZBP submitted 2013-01-30 physics.optics

Alexander Petrov , Dirk Jalas , Manfred Eich , Wolfgang Freude , Shanhui Fan , Zongfu Yu , Roel Baets , Miloš Popović
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Andrea Melloni John D. Joannopoulos Mathias Vanwolleghem Christopher R. Doerr Hagen Renner
This is my paper
classification physics.optics
keywords isolatorclaimconstructopticalbackwardbreakingcannotcentral
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Wang et al. [1] demonstrated different power transmission coefficients for forward and backward propagation in simulation and experiment. From such a demonstration, the central claim of their paper is that "the spatial inversion symmetry breaking diode can construct an optical isolator in no conflict with any reciprocal principle". Their claim contradicts the Lorentz reciprocity theorem, from which it is well known that one cannot construct an isolator this way.

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