Effect of optical losses on optical and magneto-optical properties of one-dimensional magnetophotonic crystals for use in optical isolator devices
Effect of optical losses on optical and magneto-optical properties of one-dimensional magnetophotonic crystals for use in optical isolator devices
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DOI：
10.1016/s0030-4018(03)01283-5
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发表时间：
2003-04
影响因子：
2.4
通讯作者：
H. Kato;T. Matsushita;A. Takayama;M. Egawa;K. Nishimura;M. Inoue
中科院分区：
文献类型：
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作者：
H. Kato;T. Matsushita;A. Takayama;M. Egawa;K. Nishimura;M. Inoue
由稀土铁石榴石、SiO2和Ta 2 O 5薄膜组成的一维磁光子晶体（1-D MPC）薄膜同时具有很高的光学透过率和法拉第旋转。我们研究了1-D MPC的结构，通过理论计算，从工业的角度来看，它具有良好的光隔离性能。此外，我们还从理论上考虑了如果薄膜具有吸收，它是否可以用作光隔离器。结果，具有令人满意的光学隔离的1-D MPC膜的结构通过使用诸如Si的高折射率材料而具有工业上有利的结构。还发现，如果薄膜的光吸收（消光系数κ）小于0.000001，则不会影响特性。这使得它对实际的光隔离器制造非常有吸引力。
One-dimensional magnetophotonic crystal (1-D MPC) film composed of thin rare-earth iron garnet, SiO2and Ta2O5films simultaneously exhibits very high optical transmittance and Faraday rotation. We investigated the structure of 1-D MPC, which by theoretical calculation has an optical isolation performance favorable from an industrial perspective. Furthermore, we considered, theoretically, whether it could be used as an optical isolator if a film had absorption. As a result, the structure of 1-D MPC film with satisfactory optical isolation has an industrially favorable structure by using a high refractive index material such as Si. It was also found that if the optical absorption (extinction coefficient κ) of a film was less than 0.000001, it did not affect the characteristics. This makes it very attractive for actual optical isolator fabrications.