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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
IEICE TRANSACTIONS on Electronics
Publication Date: 2009/09/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
driver circuits, integrated circuits, feedforward systems, surface-emitting lasers,
Full Text: PDF(685.2KB)>>
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.