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Polycrystalline-metal-ferromagnetic optical waveguide isolator (POWI) for monolithic-integration with diode-laser devices

1997; Institute of Electrical and Electronics Engineers; Volume: 9; Issue: 5 Linguagem: Inglês

10.1109/68.588165

1941-0174

J. M. Hammer, J.H. Abeles, D. J. Channin,

Semiconductor Quantum Structures and Devices

Optical Faraday rotation in polycrystalline or amorphous thin films of ferromagnetic materials can be used to obtain true-optical isolators and nonreciprocal-TE-TM-mode converters which cover a wide wavelength range. These can be integrated with semiconductor lasers and other integrated optic devices because the films do not require epitaxial deposition. A detailed description and analysis of an integrable isolator with better than 30-dB isolation ratio and low insertion loss in the 1.5-μm wavelength region is given.