Quantum dot SOA/silicon external cavity multi-wavelength laser

Quantum dot SOA/silicon external cavity multi-wavelength laser.

We report a hybrid integrated external cavity, multi-wavelength laser for high-capacity data transmission operating near 1310 nm. This is the first demonstration of a single cavity multi-wavelength laser in silicon to our knowledge. The device consists of a quantum dot reflective semiconductor optical amplifier and a silicon-on-insulator chip with a Sagnac loop mirror and microring wavelength f...

Nanobeam photonic crystal cavity quantum dot laser.

The lasing behavior of one dimensional GaAs nanobeam cavities with embedded InAs quantum dots is studied at room temperature. Lasing is observed throughout the quantum dot PL spectrum, and the wavelength dependence of the threshold is calculated. We study the cavity lasers under both 780 nm and 980 nm pump, finding thresholds as low as 0.3 microW and 19 microW for the two pump wavelengths, resp...

Wavelength switching in multi-cavity laser diodes

We study experimentally and numerically electrical and optical methods to switch the lasing wavelength in a linear multi-cavity laser. The electrical method uses radio frequency modulation of the gain region to modify effective optical loss at a well-defined wavelength. The optical method uses injection of lasing light to modify effective photon lifetime at the injection wave-length. Short tran...

Tunable External Cavity Ring Laser with Wavelength Selective Elements

The main objective of this study is to develop a near-infrared (NIR) tunable external cavity laser (ECL) that is based on a semiconductor optical amplifier and two different wavelength selective elements. In order to achieve the wavelength selection, several filters have been tested in the ECL setups, including plasmonic filter, acoustooptic tunable filter (AOTF), gradient photonic crystal and ...

1300 nm optically pumped quantum dot spin vertical external-cavity surface-emitting laser