Session Index

The realization of brain-like computer has always been an ultimate goal. Today, the possibility of having this goal achieved has been significantly boosted due to the advent of several emerging non-volatile memory technologies and devices. Within these innovative technologies, phase-change memory devices have been commonly regarded as the most promising candidate to resemble the biological brain, owing to its excellent scalability, fast switching speed, and low energy consumption. In this aspect the physical properties of phase-change materials that receive a widespread application on non-volatile memory field will be discussed. We then survey the recent research on different types of neuromorphic circuits using phase-change materials in terms of their respective geometrical architecture and physical schemes to reproduce the biological events of human brain. Finally, the current status of the neuromorphic computing application of phase change memories and future prospects are envisioned.

 

We report an on-chip wavelength-dependent polarization beam-splitter based on lithium niobate asymmetric adiabatic couplers designed for integration with a type-II spontaneous parametric-down-conversion source. The splitting ratio of the unique device is wavelength tunable for both H- and V-polarized modes. The system can be used for preparing different quantum polarization-path states.

 

We present a broadband wavelength swept laser centered around 800-nm by using an electro-optical deflector with a glass-clad Ti:sapphire crystal fiber as the laser gain media. Without any mechanical element, the wavelength-swept laser exhibits a 75.6-nm tuning bandwidth at 60-kHz repetition rate.

 

We report the first polarization beam-splitter based on adiabatic directional coupling mechanism in LiNbO3. Record broad bandwidths of >120 nm and >215 nm at 17-dB extinction ratio for the TE and TM polarization modes, respectively, are obtained with this device. This novel device can facilitate implementing broadband Bell-state generators on-chip.

 

A continuous-wave mode-locking laser via positive cascaded second-order Kerr lens effect and nonlinear phase effect is demonstrated. The measured output power, pulse duration and repetition rate are 980 mW, 2 ps and 168 MHz, respectively.

 

In this study, we present a more efficient method of natural energy to process the reduction reaction of a magnesium oxide by using a solar-pumped solid-state laser. Because of the complication of the experiment outside, a DPSS is utilized to be a simulated model.