Experimental demonstration of nonreciprocal amplified spontaneous emission in a CoFe clad semiconductor optical amplifier for use as an integrated optical isolator

Experimental results are presented for an integrated-optical-waveguide-isolator concept. This concept is based on inducing the transverse magneto-optic Kerr effect in a semiconductor InP -based optical amplifier (SOA) by using a transversely magnetized ferromagnetic metal as an electrical contact. A...

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Bibliographic Details
Published in:Applied physics letters 2004-11, Vol.85 (18), p.3980-3982
Main Authors: Vanwolleghem, Mathias, Van Parys, Wouter, Van Thourhout, Dries, Baets, Roel, Lelarge, François, Gauthier-Lafaye, Olivier, Thedrez, Bruno, Wirix-Speetjens, Roel, Lagae, Liesbet
Format: Article
Language:English
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Summary:Experimental results are presented for an integrated-optical-waveguide-isolator concept. This concept is based on inducing the transverse magneto-optic Kerr effect in a semiconductor InP -based optical amplifier (SOA) by using a transversely magnetized ferromagnetic metal as an electrical contact. As a result, the SOA exhibits nonreciprocal loss/gain for TM polarized light and is easily monolithically integrated with other InP -based active photonic devices. We have designed, fabricated and characterized prototype ferromagnetic metal-clad optical amplifiers for an operation wavelength of 1300 nm . In these first generation devices we obtained isolation strengths of up to 2.0 dB ∕ mm .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1811802