Wencheng Wang

TL;DR: In this article, a fiber Bragg grating was written in a quasi-rectangle high birefringence fiber by the phase mask method, and two Bragg wavelengths corresponding to the fast and slow-axis modes were observed in this grating, and a wavelength splitting as large as 0.765 nm was obtained.

TL;DR: It is demonstrated for the first time that a porous silicon layer (PSL), which has a bright light-emission band in the range of 500-700 nm, exhibits a strong visible-range luminescence under the illumination of an infraerd ultrashort pulsed laser and the dependence of integrated luminescent intensity on pump power shows that this is a thrid-order nonlinear optical effect.

TL;DR: Lasing was achieved in a new type of random laser: a planar random microcavity with a random gain layer that is highly directional with an extremely narrow-linewidth and ultralow threshold and explained in terms of the coupling of random cavity modes and planar microc Cavity modes.

TL;DR: In this article, a 2×2 Mach-Zehnder interferometric optical switch was fabricated on a silicon wafer at the wavelength of 1.55 μm, the switch response time was measured to be less than 4.2 ms, and the switching power was 9.3 mW.

TL;DR: In this article, a novel high birefringence (Hi-Bi) fiber by phase mask method was used to measure temperature and gas pressure simultaneously with a deviation of less than 1 °C and 0.5 MPa from the set values respectively.