| Authors: | W. Van Parys, B. Moeyersoon, D. Van Thourhout, R. Baets, M. Vanwolleghem, B. Dagens, J. Decobert, O. Le Gouezigou, D. Make, R. Vanheertum, L. Lagae | | Title: | Transverse magnetic mode nonreciprocal propagation in an amplifying AlGaInAs/InP optical waveguide isolator | | Format: | International Journal | | Publication date: | 2/2006 | | Journal/Conference/Book: | Applied Physics Letters
| | Volume(Issue): | 88 p.071115 | | DOI: | 10.1063/1.2174106 | | Citations: | 89 (Dimensions.ai - last update: 21/12/2025)
68 (OpenCitations - last update: 3/5/2025)
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Abstract
The design, fabrication, and characterization of an amplifying transverse magnetic TM-mode
optical waveguide isolator operating at a wavelength of 1300 nm are presented. The
magneto-optical Kerr effect induces nonreciprocal modal absorption in a semiconductor optical
amplifier with a laterally magnetized ferromagnetic metal contact. Current injection in the active
structure compensates for the loss in the forward propagation direction. Monolithic integration of
this optical isolator configuration with active InP-based photonic devices is straightforward. The
combination of AlGaInAs/InP active material and the metal alloy Co50Fe50 results in greatly
improved performance. 99 dB/cm TM mode isolation and significantly reduced insertion loss are
demonstrated. Related Research Topics
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