Polycrystalline-metal-ferromagnetic optical waveguide isolator (POWI) for monolithic-integration with diode-laser devices
- 1 May 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 9 (5) , 631-633
- https://doi.org/10.1109/68.588165
Abstract
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.Keywords
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