Sign conventions in magneto-optical calculations and measurements

Atkinson, R.; Lissberger, P.H.

doi:10.1364/ao.31.006076

Cited by 46 publications

(21 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is important to note that the sign convention e jwt is commonly used in the electronics field to represent the incident and reflected waves in (1), while e −jwt is sometimes adopted in the optics field [19,20]. Hence, the scattering matrix defined with one sign convention is the complex conjugate of the other.…”

Section: Conventional State-space Modeling Of Photonic Systemsmentioning

confidence: 99%

Numerical modeling of a linear photonic system for accurate and efficient time-domain simulations

Spina

Xing

et al. 2018

Photon. Res.

View full text Add to dashboard Cite

In this paper, a novel modeling and simulation method for general linear, time-invariant, passive photonic devices and circuits is proposed. This technique, starting from the scattering parameters of the photonic system under study, builds a baseband equivalent state-space model which splits the optical carrier frequency and operates at baseband, thereby significantly reducing the modeling and simulation complexity without losing accuracy. Indeed, it is possible to analytically reconstruct the port signals of the photonic system under study starting from the time-domain simulation of the corresponding baseband equivalent model. However, such equivalent models are complex-valued systems and, in this scenario, the conventional passivity constraints are not applicable anymore. Hence, the passivity constraints for scattering parameters and state-space models of baseband equivalent systems are presented, which are essential for time-domain simulations. Three suitable examples demonstrate the feasibility, accuracy and efficiency of the proposed method.

show abstract

Section: Conventional State-space Modeling Of Photonic Systemsmentioning

confidence: 99%

Numerical modeling of a linear photonic system for accurate and efficient time-domain simulations

Spina

Xing

et al. 2018

Photon. Res.

View full text Add to dashboard Cite

show abstract

“…This was previously qualitatively noted by Zayets and Ando, 22 and with our derived Eq. (15), this can now also be quantified.…”

Section: ͑11͒mentioning

confidence: 99%

“…It is important to underline that the exp͑+jt − j␤z͒ convention (with ␤ the propagation constant of the guided mode), and the preferred sign scheme of Atkinson and Lissberger is used in all optical and MO characterization experiments 15 and in all theoretical simulations. This implies the following relative signs for the real and imaginary parts of the indices,…”

Section: B Building Blocksmentioning

confidence: 99%

Design and optimization of a monolithically integratable InP-based optical waveguide isolator

et al. 2007

View full text Add to dashboard Cite

The optimization design of the layer structure for a novel type of a 1.3 m monolithically integrated InP-based optical waveguide isolator is presented. The concept of this component is based on introducing a nonreciprocal loss-gain behavior in a standard semiconductor optical amplifier (SOA) structure by contacting the SOA with a transversely magnetized ferromagnetic metal contact, sufficiently close to the guiding and amplifying core of the SOA. The thus induced nonreciprocal complex transverse Kerr shift on the effective index of the guided TM modes, combined with a proper current injection, allows for forward transparency and backward optical extinction. We introduce two different optimization criteria for finding the optimal SOA layer structure, using two different figure-of-merit functions (FoM) for the device performance. The device performance is also compared for three different compositions of the Co x Fe 1−x ͑x =0,50,90͒ ferromagnetic transition metal alloy system. It is found that equiatomic (or quasi-equiatomic) CoFe alloys are the most suitable for this application. Depending on the used FoM, two technologically practical designs are proposed for a truly monolithically integrated optical waveguide isolator. It is also shown that these designs are robust with respect to variations in layer thicknesses and wavelength. Finally, we have derived an analytical expression that gives a better insight in the limit performance of a ferromagnetic metal-clad SOA-isolator in terms of metal parameters.

show abstract

“…Combining the optical and the polar complex Kerr data the magneto-optic parameter Q is determined directly making use of the 4 × 4 [7] matrix approach for calculating the magneto-optical effects and again taking into account finite film thicknesses, buffer layers and the optical properties of the substrate. The sign convention for the Kerr rotation measurements and the magneto-optic parameter is the preferred scheme described in detail elsewhere [8]. The physical data corresponding to the films and associated magnetic properties is summarized in Table 1.…”

Section: Optical and Magneto-optical Measurementsmentioning

confidence: 99%

Fundamental optical and magneto-optical constants of Co/Pt and CoNi/Pt multilayered films

Atkinson

Pahirathan

Salter

et al. 1996

Journal of Magnetism and Magnetic Materials

Self Cite

View full text Add to dashboard Cite

A study has been made of the optical and magneto-optical properties of several Co/Pt and CoNi/Pt multilayered films that were fabricated by magnetron sputter deposition. Spectroscopic rotating analyzer ellipsometry and Kerr polarimetry were carried out to determine the fundamental optical and magneto-optical constants over the spectral range 320-860 nm. The constants determined were the complex refractive index and the first-order magneto-optic Voigt parameter. A total of seven films were examined and excellent reproducibility was observed in the measured material constants. These have been used to discuss the spectral dependence of the figure-of-merit, for each material, associated with the detection of the polar Kerr effect.

show abstract

Sign conventions in magneto-optical calculations and measurements

Cited by 46 publications

References 10 publications

Numerical modeling of a linear photonic system for accurate and efficient time-domain simulations

Numerical modeling of a linear photonic system for accurate and efficient time-domain simulations

Design and optimization of a monolithically integratable InP-based optical waveguide isolator

Fundamental optical and magneto-optical constants of Co/Pt and CoNi/Pt multilayered films

Contact Info

Product

Resources

About