This paper contributes to the growing body of scholarly inquiry into the BYOD (‘Bring Your Own Device’) versus prescribed (minimum standards) technology for learning by reporting on findings of a mobile technology trial. The study investigated student experiences with and preferences for mobile devices, depending on whether those were loaned or owned. Student participants were loaned a Samsung Tablet and instructed on how to use it for various learning activities throughout a teaching period. Data collected via online survey and face-to-face interviews revealed that students tended to use their owned and loaned devices simultaneously and in a complementary manner rather than choosing to use one device for all learning activities. As most student participants already owned personal mobile devices and used those for some learning activities of their choosing, students did not think they acquired any new skills as a result of this initiative. However, students felt that using the loaned Table had overall improve…
We propose and experimentally demonstrate simplified FFT operation to improve the energy efficiency of ONUs in OFDM PON. Our proposal can achieve an energy saving of 14.6% compared to the conventional OFDM PON.
We introduce an innovative geometry for OPOs in a CMOS-compatible microring resonator that is robust against the effect of thermal fluctuations. It exploits lasing of the pump inherently positioned within the resonances of the microcavity.
We propose and experimentally demonstrate a new scheme for orthogonal frequency division multiplexing (OFDM) sidelobe suppression by inserting sidelobe suppression prefix (SSP) ahead of cyclic prefix (CP). The feasibility of the proposal is verified by both simulation and experiment.
Abstract not available.
Cesar Albarran Torres reviews the classic Australian film Wake in Fright by director Ted Kotcheff.
We introduce a novel modulation scheme termed hierarchical modulation to increase the transmission capacity of OFDM transmitter with limited bandwidth in a long-reach OFDM-PON. A proof-of-concept experiment is performed to verify the feasibility of our proposal.
We propose and numerically demonstrate a scheme that enables the direct detection of QAM signals by a single photodetector. 40-Gb/s 16-QAM signal over 22-km fiber transmission is recovered without sacrificing optical spectral efficiency.
We propose a compact (5µm×40µm) 2×2 electro-optic switch implemented by dual silicon photonic crystal nanobeam (PCN) cavities. A switching power of 2.6 fJ/bit is numerically demonstrated. Extinction ratios of 14.2/13.4 dB are achieved at through/drop ports.