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Authors: D. Jalas, A. Petrov, M. Eich, W. Freude, S. Fan, Z. Yu, R. Baets, M. Popovic, A. Melloni, J. Joannopoulos, M. Vanwolleghem, C. Doerr, H. Renner
Title: What is - and what is not - an optical isolator
Format: International Journal
Publication date: 8/2013
Journal/Conference/Book: Nature Photonics (invited)
Volume(Issue): 7 p.579-582
Internal Reference: [N-1462]


The quest for on-chip optical isolators has recently spawned many new isolator structures. However, there has been some confusion about the requirement of nonreciprocity. Here, we review the essential characteristics of an isolator.

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