Biomedical subjects

Weiguo Yang

Publications and source records attributed to Weiguo Yang.

2 recordsLinked to original sources

PubMed2007

Self-mode-locked single-section Fabry-Perot semiconductor lasers at 1.56 microm.

The mode-locking mechanism of a single-section multi-spatial-mode Fabry-Perot semiconductor laser is analyzed by the additive pulse mode-locking (APM) master equation model. Critical parameters of the equivalent saturable absorber as well as the self-phase modulation are estimated. The mode-locking operation regime in terms of pulse chirp and output power is predicted by the APM model and the prediction is shown to be in good agreement with the experimental results of a 40 GHz, 6.7 ps pulse width mode-locked operation at 1.56 microm.

Journal Article↗

PubMed2006

Self-starting mode locking by multi-spatial-mode active waveguiding.

We demonstrate a novel principle of self-starting mode locking in a compact semiconductor laser diode, where the needed saturable loss is provided by spatial effects resulting from multi-spatial-mode active waveguiding. The demonstrated device operates over a 1.54 microm wavelength range and has a repetition rate of 47 GHz. The pulse width is below 5 ps, and the average power coupled to the cleaved single-mode fiber is nearly 0 dBm.

Journal Article↗