Monolithic Two-Section DFB Laser

4.6 GHz more bandwidth

The detuned loading effect boosts the direct modulation bandwidth from 13.0 GHz to 17.6 GHz and reduces the chirp parameter from 4.69 to 2.24, enabling low signal distortion at high speeds.

Zhang, Yunshan · Yifan, Xu · Guan, Shijian · Zheng, Jilin · Hongming, Gu · Li, Lianyan · Xiao, Rulei · Fang, Tao · Zou, Hui · Chen, Xiangfei

Journal of Semiconductors 2023

Specifications

带宽

{'zh': '17.6', 'en': ''} GHz

带宽增加

{'zh': '4.6', 'en': ''} GHz

wavelength spacing SMSR

{'zh': '>49.093', 'en': '> 49.093'} dB

Advantages

Chirp parameter reduced to 2.24

After 10 Gb/s NRZ transmission over 5 km fiber, eye diagram remains wide open