Integrated broadband Ce:YIG/Si Mach–Zehnder optical isolators with over 100  nm tuning range

D. Huang, P. Pintus, Y. Shoji, P. Morton, T. Mizumoto, and J. E. Bowers
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Cross section of the fabricated waveguide with the fundamental TM mode overlaid.
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Journal/Conference Name
Optics Letters
Volume 42, Issue 23, pages 4901-4904

We demonstrate integrated optical isolators with broadband behavior for the standard silicon-on-insulator platform. We achieve over 20 dB of optical isolation across 18 nm of optical bandwidth. The isolator is completely electrically controlled and does not require a permanent magnet. Furthermore, we demonstrate the ability to tune the central operating wavelength of the isolator across 100 nm, which covers the entire S + C telecom bands. These devices show promise for integration in optical systems in which broadband isolation is needed such as wavelength multiplexed systems or optical sensors.

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More Research Areas
Isolators & Circulators