Abstract
We have designed a hybrid board for optical data transmission in the ATLAS pixel detector. This opto-board features two kinds of ASICs, VDC and DORIC. The former drives a Vertical Cavity Surface Emitting Laser (VCSEL) for data transmission from the pixel detector and the latter recovers Bi -Phase Mark (BPM) encoded command signals received optically by a PIN diode. The opto-board is fabricated with a beryllium-oxide (BeO) substrate for heat management. We present the status of opto-board production and performance.
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