Relative intensity noise of silicon hybrid laser

• Main Authors: Hu, Xiao Nan, Liu, Tao, Cao, Yu-Lian, Meng, Bo, Wang, Hong, Ng, Geok Ing, Luo, Xian Shu, Liow, Tsung Yang, Song, Jun Feng, Lo, Guo Qiang, Wang, Qi Jie
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
• Online Access: https://hdl.handle.net/10356/105343; http://hdl.handle.net/10220/20505
• Institution: Nanyang Technological University

We theoretically investigate the relative intensity noise (RIN) of a silicon hybrid laser by taking into account two-dimension transverse modes in the hybrid waveguide. It shows that, when only one transverse mode is excited, RIN spectrum of the hybrid laser exhibits a larger peak value at a lower relaxation oscillation (RO) frequency as compared with the case of a conventional multiple-quantum well (MQW) laser with the the same active region design and dimension. In contrast, when two transverse modes are excited, the hybrid laser shows a lower peak value at a higher RO frequency as compared with the MQW laser. The effects of waveguide dimensions, e.g., Si ridge height and IIII-V ridge width on RIN spectra of the hybrid laser are also investigated.