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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 18 — Sep. 15, 2012
  • pp: 3762–3764

On-chip optical isolation via unidirectional Bloch oscillations in a waveguide array

Pradeep Kumar and Miguel Levy  »View Author Affiliations


Optics Letters, Vol. 37, Issue 18, pp. 3762-3764 (2012)
http://dx.doi.org/10.1364/OL.37.003762


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Abstract

We propose to use the unidirectionality of the optical Bloch oscillation phenomenon achievable in a magneto-optic asymmetric waveguide array to achieve optical isolation. At the 1.55 μm telecommunication wavelength, our isolator design exhibits an isolation ratio of 36 dB between forward- and backward-propagating waves. The proposed design consists of a waveguide array made in a silicon-on-insulator substrate with a magnetic garnet cover layer. A key role is played by the transverse-magnetic mode nonreciprocal phase shift effect.

© 2012 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(160.3820) Materials : Magneto-optical materials
(230.3240) Optical devices : Isolators
(230.7370) Optical devices : Waveguides

ToC Category:
Optical Devices

History
Original Manuscript: July 2, 2012
Manuscript Accepted: July 22, 2012
Published: September 5, 2012

Citation
Pradeep Kumar and Miguel Levy, "On-chip optical isolation via unidirectional Bloch oscillations in a waveguide array," Opt. Lett. 37, 3762-3764 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-18-3762

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