Zobrazeno 1 - 10
of 814
pro vyhledávání: '"Selvaraja, A."'
We investigate the effect of a waveguide on an emitter spontaneous emission in its vicinity. The impact of various possible orientations of an emitter with respect to the waveguide surface is studied through simulations and compared with experimental
Externí odkaz:
http://arxiv.org/abs/2407.06592
DFT analysis and demonstration of enhanced clamped Electro-Optic tensor by strain engineering in PZT
Autor:
Suraj, Selvaraja, Shankar Kumar
We report $\approx$400\% enhancement in PZT Pockels coefficient on DFT simulation of lattice strain due to phonon mode softening.The simulation showed a relation between the rumpling and the Pockels coefficient divergence that happens at -8\% and 25\
Externí odkaz:
http://arxiv.org/abs/2305.19226
Autor:
Suraj, Selvaraja, Shankar Kumar
In this work, we have demonstrated a novel method to increase the electro-optic interaction in an intensity modulator at the C-band by optimizing the growth methodology of PZT with the metal (Ti/Pt) as a base material and the PZT poling architecture.
Externí odkaz:
http://arxiv.org/abs/2305.19174
Autor:
Suraj, Selvaraja, Shankar Kumar
We demonstrate, for the first time, sputtered PZT as a platform for the development of Si-based photonic devices such as rings, MZI, and electro-optic modulators. We report the optimization of PZT on MgO(002) substrate to obtain highly oriented PZT f
Externí odkaz:
http://arxiv.org/abs/2305.19126
In this work, we report the realization of a polarization-insensitive grating coupler, single-mode waveguide, and ring resonator in the GaN-on-Sapphire platform. We provide a detailed demonstration of the material characterization, device simulation,
Externí odkaz:
http://arxiv.org/abs/2305.15900
Autor:
Suraj, Selvaraja, Shankar Kumar
Ferroelectric materials exhibit interesting electric, mechanical and optical properties. Particularly,tin-film lead zirconium titanate (PZT) has been used as a standard piezo-electric material in micro-electro-mechanical systems. Interestingly, it ha
Externí odkaz:
http://arxiv.org/abs/2305.13263
We propose and demonstrate a hybrid waveguide platform using layered amorphous silicon and silicon nitride. The waveguide offers more degrees of freedom to design waveguides with desired confinement, effective index and polarization birefringence. Un
Externí odkaz:
http://arxiv.org/abs/2304.00748
In this paper, we present refractive index measurement using a double-slot silicon waveguide-based Mach Zehnder interferometer. We present a double-slot waveguide that offers the best sensitivity and limit of detection compared to wire and single-slo
Externí odkaz:
http://arxiv.org/abs/2302.04474
Autor:
Omotayo Fatokun, Malarvili Selvaraja, Haryati Anuar, Tengku Zetty Maztura Tengku Jamaluddin, Sharifah Norkhadijah Syed Ismail, Rozaihan Mansor, Shamsul Azhar Shah, Nelson Oranye
Publikováno v:
International Journal of One Health, Vol 10, Iss 2, Pp 161-171 (2024)
Understanding and combating antimicrobial resistance (AMR) is increasingly centered on the intricate relationship between humans, animals, and the environment, with Escherichia coli being the main source of AMR-related fatalities worldwide. E. coli,
Externí odkaz:
https://doaj.org/article/8d18036024a849d883dfff729e2067b4
Autor:
Selvaraja Kaushalya Shamila, Shashi S. Udumann, Nuwandhya S. Dissanayaka, Kowshalya Rajaratnam, Anjana J. Atapattu
Publikováno v:
Crops, Vol 4, Iss 2, Pp 227-241 (2024)
Sustainable soil fertility management is crucial for enhancing productivity in coconut plantations. This study investigated the synergistic effects of king coconut husk (KCH) ash, biochar, and chemical fertilizers on soil properties in a coconut plan
Externí odkaz:
https://doaj.org/article/0d9ad9561cb64478950925cdd76e082e