New Functions and Integration of VCSEL-based Slow Light Devices

二三夫 小山, FUMIO KOYAMA

Peng‐Chun Peng, C. T. Lin, Hao‐Chung Kuo +8 more

We demonstrate that the slow light device can be used in a SCM system for the first time. Tunable slow light can be achieved by adjusting the bias current and wavelength detuning of QD VCSEL.

Yong Zhao, Huawei Zhao, Xinyuan Zhang +2 more

Chia-Sheng Chou, Ray‐Kuang Lee, Peng‐Chun Peng +4 more

We develop a simple model for the slow lights in Vertical Cavity Surface Emission Lasers (VCSELs), with the combination of cavity and population pulsation effects. The dependences of probe signal power, injection bias current and wavelength detuning for the group delays are demonstrated numerically and experimentally. Up to 65 ps group delays and up to 10 GHz modulation frequency can be achieved in the room temperature at the wavelength of 1.3 $μ$m. The most significant feature of our VCSEL device is that the length of active region is only several $μ$m long. Based on the experimental parameters of quantum dot VCSEL structures, we show that the resonance effect of laser cavity plays a significant role to enhance the group delays.

Ahmed M. Hassan, Moustafa F. Ahmed, Masanori Nakahama +1 more

Small-signal analysis of a slow-light VCSEL amplifier is introduced using a traveling-wave rate equations model. Theoretical calculations show that the small-signal optical modulation bandwidth of the slow-light mode has strong dependences on the slowdown factor and length of the amplifier; it can be boosted to more than 50 GHz.