Magneto-optic fiber Sagnac modulator based on magnetic fluids
- 13 April 2011
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 36 (8), 1425-1427
- https://doi.org/10.1364/ol.36.001425
Abstract
A magneto-optic modulator with a magnetic fluid film inserted into an optical fiber Sagnac interferometer is proposed. The magnetic fluid exhibits variable birefringence and Faraday effect under external magnetic field that will lead to a phase difference and polarization state rotation in the Sagnac interferometer. As a result, the intensity of the output light is modulated under the external magnetic field. Moreover, the modulator has a high extinction ratio and can easily be integrated in a single-mode fiber system. The performance of the modulator is not affected by ambient temperature variation from room temperature to .
Keywords
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