Four-in-one interferometer for coherent and self-coherent detection

A compact micro-optical interferometer is presented that combines two optical 90° hybrids or, alternatively, four delay interferometers into one interferometer structure sharing one tunable delay line. The interferometer can function as a frontend of either a coherent receiver or of a self-coherent...

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Published inOptics express Vol. 21; no. 11; pp. 13293 - 13304
Main Authors Li, Jingshi, Billah, Muhammad Rodlin, Schindler, Philipp C, Lauermann, Matthias, Schuele, Sven, Hengsbach, Stefan, Hollenbach, Uwe, Mohr, Juergen, Koos, Christian, Freude, Wolfgang, Leuthold, Juerg
Format Journal Article
LanguageEnglish
Published United States 03.06.2013
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Summary:A compact micro-optical interferometer is presented that combines two optical 90° hybrids or, alternatively, four delay interferometers into one interferometer structure sharing one tunable delay line. The interferometer can function as a frontend of either a coherent receiver or of a self-coherent receiver by adjusting the waveplates and the delay line. We built a prototype on a LIGA bench. We characterized the device and demonstrated its functionality by successful reception of a 112 Gbit/s signal.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.013293