Hao Wenkang1, Ren Hailan1. Research on impacts of VCSEL coupling mode on voltage margin at LDD modulation side[J]. 2012,(2):53-55. DOI: 10.13756/j.gtxyj.2012.02.010.
Laser Diode Driver(LDD) is a critical part of Small Form factor Pluggable(SFP) optical modules.The voltage margin sufficiency of LDD modulator determines if optical modules can work normally and their performances satisfy the requirements.This paper studies the influences of DC and AC coupling modes between VCSEL and LDD on the voltage margin of LDD modulator.The experimental results indicate that when AC-coupling mode is adopted
voltage margin insufficiency can be effectively avoided.This result is valuable for the design of SFP optical modules using VCSEL.