Abstract
Magnetic nanoparticles in magnetic fluid film can be agglomerated to form a new type of magnetic fluid
photonic crystal when magnetic field is applied perpendicular to the surface of the film. The lattice constant of the
magnetic fluid photonic crystal can be tuned by changing the intensity of the applied magnetic field. In this paper,
photonic bandgap of the magnetic fluid photonic crystal was analyzed theoretically, and it exhibited better magnetic
tunability when the sweep rate of applied magnetic field was 2 Oe/s. Then, a magnetic fluid photonic crystal waveguide
was presented, and slow light was generated. The effect of the applied magnetic field on slow light was studied based
on experimental data. The results showed that group velocity below 0.35c could be obtained, and the shift of working
wavelength with magnetic field intensity was the most obvious when the sweep rate of applied magnetic field was 10
Oe/s. Compared with traditional photonic crystals, the magnetic fluid photonic crystal exhibited the advantage of
better magnetic tunability and easier formation, it would be potentially applied to the fabrication of new
optoelectronic device.
© 2014 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription