New Results On Opto-Electronics

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New Results on Opto-ElectronicsK.K. GanThe Ohio State UniversityFebruary 11, 2003K. Arms, K.K. Gan, M.O. Johnson, H.P. Kagan, R.D. Kass,A. Rahimi, C Rush, R. Ter-Antonian, M. ZoellerThe Ohio State UniversityA. Ciliox, M. Holder, M. ZiolkowskiSiegen UniversityK.K. GanATLAS Pixel Week1

OutlinelResult on VCSEL AnnealinglTest with Type 0 cablelTest with RX/TXlSummaryK.K. GanATLAS Pixel Week2

Optical Power of Irradiated Opto-boards after Annealing1200p implanted VCSEL1000Power (mW)80060040020000100200300400500600Time (hours)limited annealing during irradiation partially recovers optical power lost] all links have good optical power before annealingl one VCSEL has large radiation damage] large improvement with annealing] dead after 100 hours of annealinglK.K. GanATLAS Pixel Week3

Bit Error Testing with PP0/Type 0 CablesOpto-boardOpto-packbi-phase markedoptical signalPINDORICdecoded dataVCSELVDCdecoded clockVCSELVDClK.K. GanPP0/Type 0 cablescompare original and decoded data] measure minimum PIN current for no bit errorsATLAS Pixel Week4

Opto-Board with PP0 Type 0 CablesPP0Type 0ldata/clock from DORIC to VDC rerouted via PP0/Type 0 cablesK.K. GanATLAS Pixel Week5

PIN Current Thresholds with PP0/Type 0 Cables35Opto-Board on Test BoardOpto-Board on PP030Opto-Board on PP0 with Type 0 CableIpin link#7lPIN current thresholds measured with other links running at 40 mAlno increase in thresholds with PP0/Type 0 cablesK.K. GanATLAS Pixel Week6

PIN Current Thresholds with BPM/DRX35Opto-Board on Test Board30Opto-Board on Test Board with BPM/DRXIpin link#7thresholds for no bit error measured with other links running at 40 mAl opto-board operates with lower thresholds with BPM/DRX] opto-board design is compatible with BPM/DRXlK.K. GanATLAS Pixel Week7

Summarylone irradiated VCSEL failed during annealinglno change in PIN current thresholds for no bit errorswith PP0/Type 0 cablellower PIN current thresholds with BPM/DRX]opto-board is compatible with BPM/DRXK.K. GanATLAS Pixel Week8

DORIC-I5e: Engineering RunPresentation by Mike Zeollerl DORIC-I5e:March 2003, with MCC run3 metal layers (MPW runs), MZ top metal g 5 metals, LM top metala improved power routing:extra metalsLM sheet resistance is 61% that of MZa reduced strays in input stage:top metal shielding layer further separated from m1, m2Minor improvements:double # contacts in one preamp FETa max. IPIN : 2mA g 4mAreduce area of input FETa reduce strays in input stageAdd power bypass capacitors (mimcaps?)K.K. GanATLAS Pixel Week9

New Results on Opto-Electronics K.K. Gan The Ohio State University February 11, 2003 . Optical Power of Irradiated Opto-boards after Annealing 0 200 400 600 800 1000 1200 0 100 200 300 400 500 600 Time (hours) Pow

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