4-8 August 2015
America/Detroit timezone

Radiation-Hard/High-Speed Parallel Optical Engine

4 Aug 2015, 16:30
Koessler (Michigan League)


Michigan League


K.K. Gan (The Ohio State University (US))


The LHC has recently been upgraded to operate at higher energy and luminosity. In addition, there are plans for further upgrades. These upgrades require the optical links of the experiments to transmit data at much higher speed in a more intense radiation environment. For the recently completed upgrade, we designed a new radiation-hard/high-speed parallel optical engine for the upgraded pixel detector of ATLAS. The new fiber optic transceivers, opto-boards, were designed to replace the first generation opto-boards installed on the pixel detector and for the new pixel layer. Each opto-board contains one 12-channel PIN array and two 12-channel VCSEL arrays along with associated receiver/driver ASICs. The new opto-board design benefits from the production and operational experience of the first generation opto-boards and contains several improvements. The new opto-boards have been installed. We will present the design, production and operational experience, and reliability study of the new opto-boards. For the future upgrade, we have designed an ASIC that contains four high-speed/radiation-hard drivers to operate an array of four VCSELs at 10 Gb/s. The ASIC has been fabricated in a 65 nm CMOS process. We have also designed a new opto-board that couples an ASIC to a VCSEL array. For the future, we plan to increase the number of channels to twelve. We will present the result from the new high-speed optical engine together with the future plan.
Oral or Poster Presentation Oral

Primary author

K.K. Gan (The Ohio State University (US))

Presentation Materials