| Integrated optical isolators with sputter-deposited thin-film magnets |
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| 2016-03-14 |
| IEEE Photonics Technology Letters (Volume:8 , Issue: 7 ) Page(s): 903 - 905 This letter describes the use of a compact sputter-deposited thin-film magnet that is directly integrated onto a waveguide isolator fabricated in magnetic thin-film garnets. Film magnets of different thicknesses are sputtered onto the waveguides, and isolation ratios of 29 dB are obtained with negligible excess loss. Stress-birefringent effects due to the ferromagnetic film overlayer are eliminated by the use of an aluminum compliant buffer. |
