This paper presents an automatic classification of plastic material's inorganic pigment using
terahertz spectroscopy and convolutional neural networks (CNN). The plastic materials were …

The commercially available semiconductor lasers for the mid-infrared (MIR) region often do
not reach the desired performance and represent a limitation for gas sensor technology …

Abstract Single-longitudinal-mode, gain-coupled distributed feedback (DFB) lasers based
on high order surface gain-coupled gratings are achieved. Periodic surface metal p-contacts …

Multi-wavelength distributed feedback laser array (DFB-MLA) based tunable semiconductor
lasers have been widely used owing to the high mode stability and simple wavelength …

With shorter wavelengths than microwaves and greater penetration depth than infrared light,
waves in the terahertz spectrum offer unique material testing opportunities. Terahertz …

This paper presents a frequency-modulated optical signal generator in the THz band. The
proposed method is based on a fast optical frequency sweep of a single narrowband laser …

A widely tunable semiconductor laser based on slotted surface grating is presented. This
regrowth-free tunable semiconductor laser is fabricated by contact i-line lithography rather …

A high-power single-longitudinal-mode regrowth-free tapered gain-coupled distributed
feedback laser diode based on periodic current injection is achieved at 996 nm. It enhances …

A method to get balanced output power of a current-controlled in-line semiconductor laser
based on REC technique is investigated. By mapping the contour lines of the PI contour …

We proposed and experimentally demonstrated a directly modulated distributed feedback
(DFB) laser array with a transmission rate of 100 Gbps (10c hannels× 10G bps). The grating …