Design of Automotive VCSEL Transmitter with On-Chip Feedforward Optical Power Control

Xin YIN  Johan BAUWELINCK  Tine DE RIDDER  Peter OSSIEUR  Xing-Zhi QIU  Jan VANDEWEGE  Olivier CHASLES  Arnaud DEVOS  Piet DE PAUW  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E92-C   No.9   pp.1201-1207
Publication Date: 2009/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E92.C.1201
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
driver circuits,  integrated circuits,  feedforward systems,  surface-emitting lasers,  

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Summary: 
We propose a novel 50 Mb/s optical transmitter fabricated in a 0.6 µm BiCMOS technology for automotive applications. The proposed VCSEL driver chip was designed to operate with a single supply voltage ranging from 3.0 V to 5.25 V. A fully integrated feedforward current control circuit is presented to stabilize the optical output power without any external components. The experimental results show that the optical output power can be stable within a 1.1 dB range and the extinction ratio greater than 14 dB over the automotive environmental temperature range of -40 to 105.