Waveguide optical isolator based on Mach-Zehnder interferometer

Autor(en): Fujita, J
Levy, M
Osgood, RM
Wilkens, L
Dotsch, H
Stichwörter: IRON-GARNET; Physics; Physics, Applied; RIB WAVE-GUIDES
Erscheinungsdatum: 2000
Herausgeber: AMER INST PHYSICS
Journal: APPLIED PHYSICS LETTERS
Volumen: 76
Ausgabe: 16
Startseite: 2158
Seitenende: 2160
Zusammenfassung: 
A waveguide optical isolator based on nonreciprocal interference is demonstrated. Ridge waveguides are fabricated in a Mach-Zehnder configuration on a single film of bismuth-, lutetium-, neodymium-iron garnet. With this design, no polarizers are required to achieve extinction in the backward propagation direction. This isolator exhibits a 19 dB extinction ratio at lambda=1.54 mu m. A flat wavelength dependence, to within 2 dB, has been observed in the range between 1.49 and 1.57 mu m. (C) 2000 American Institute of Physics. [S0003-6951(00)02416-5].
ISSN: 00036951
DOI: 10.1063/1.126284

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