title: Transverse magnetic field impact on waveguide modes of photonic crystals.
abstract: This Letter presents a theoretical and experimental study of waveguide modes of one-dimensional magneto-photonic crystals magnetized in the in-plane direction. It is shown that the propagation constants of the TM waveguide modes are sensitive to the transverse magnetization and the spectrum of the transverse magneto-optical Kerr effect has resonant features at mode excitation frequencies. Two types of structures are considered: a non-magnetic photonic crystal with an additional magnetic layer on top and a magneto-photonic crystal with a magnetic layer within each period. We found that the magneto-optical non-reciprocity effect is greater in the first case: it has a magnitude of δ∼10-4, while the second structure type demonstrates δ∼10-5only, due to the higher asymmetry of the claddings of the magnetic layer. Experimental observations show resonant features in the optical and magneto-optical Kerr effect spectra. The measured dispersion properties are in good agreement with the theoretical predictions. An amplitude of light intensity modulation of up to 2.5% was observed for waveguide mode excitation within the magnetic top layer of the non-magnetic photonic crystal structure. The presented theoretical approach may be utilized for the design of magneto-optical sensors and modulators requiring pre-determined spectral features.
authors: Daria
authors: D
authors: Sylgacheva
authors: Nikolai
authors: N
authors: Khokhlov
authors: Andrey
authors: A
authors: Kalish
authors: Sarkis
authors: S
authors: Dagesyan
authors: Anatoly
authors: A
authors: Prokopov
authors: Alexandr
authors: A
authors: Shaposhnikov
authors: Vladimir
authors: V
authors: Berzhansky
authors: Mohammad
authors: M
authors: Nur-E-Alam
authors: Mikhail
authors: M
authors: Vasiliev
authors: Kamal
authors: K
authors: Alameh
authors: Vladimir
authors: V
authors: Belotelov