Abstract:
We present a driver circuit that can modulate a VCSEL with a 56Gb/s (28Gbaud/s) 4-level pulse-amplitude-modulated (PAM-4) signal. High power efficiency is achieved using ...Show MoreMetadata
Abstract:
We present a driver circuit that can modulate a VCSEL with a 56Gb/s (28Gbaud/s) 4-level pulse-amplitude-modulated (PAM-4) signal. High power efficiency is achieved using a common-source driver topology that only draws the modulation current corresponding to the PAM-4 symbol being transmitted. A Gray encoder based on MOS Current-Mode Logic (MCML) gates is included on chip, as well as programmable PAM-4 bias and modulation levels.
Published in: IET Irish Signals and Systems Conference (ISSC 2012)
Date of Conference: 28-29 June 2012
Date Added to IEEE Xplore: 07 October 2013
Electronic ISBN:978-1-84919-613-0
