Abstract
We present in this work, magneto-optical (MO) properties of a magnetophotonic crystal fiber (MPCF) based on terbium gallium garnet Tb3Ga5O12 or TGG. The air holes of a periodic triangular lattice are filled with magnetic fluid (MF). With a light which can be confined in the core area of this MF filled MPCF we obtain a confinement corresponding to the propagation of the single mode by assuming an effective index (neff). The variations of neff as a function of the gyrotropy parameter (g) and magnetic nanoparticle volume fraction concentrations are well established at the telecommunication wavelength λ = 1.55 μm. The TE-TM mode conversion based on the Faraday rotation and modal birefringence are then numerically simulated. Faraday rotation exhibits largest value of 8700.08°/cm at MF concentration of 0.25% and g = 0.0144, whereas the modal birefringence is reduced to 0.00177 at the same conditions. These results could be helpful for experimentally designing and realizing isolators with these filled MF-MPCFs based on this TGG material. They appear to possess significant potential for the practical applications due to their unique MO properties.
| Original language | English |
|---|---|
| Pages (from-to) | 24-28 |
| Journal | Photonics and Nanostructures - Fundamentals and Applications |
| Volume | 22 |
| DOIs | |
| Publication status | Published - 1 Nov 2016 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Magnetophotonic crystal fiber
- Terbium gallium garnet
- Magnetic fluid
- Faraday rotation
- Modal birefringence
- Gyrotropy effect